Rotor assembly, motor, compressor and air conditioner

Abstract

This invention provides a rotor assembly, a motor, a compressor, and an air conditioner. The rotor assembly includes: a rotor core assembly; a counterweight mounted at the end of the rotor core assembly; and a fan shroud mounted on the rotor core assembly. The fan shroud and the counterweight are located on the same side of the rotor core assembly. The fan shroud includes: a fan shroud body, with at least a portion of the counterweight located within the fan shroud body; and at least two lugs connected to the side of the fan shroud body facing the rotor core assembly. Each lug protrudes from the fan shroud body and is connected to the rotor core assembly. By providing lugs protruding from the fan shroud body within the fan shroud, it is possible to connect to the rotor core assembly via the lugs, thereby improving the stability of the fan shroud. This ensures the fan shroud remains stable as it rotates with the rotor core, reducing vibrations caused by unstable connections, and consequently reducing noise generated by the rotor assembly during high-speed rotation and the noise during motor operation.

Description

Technical Field

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

[0002] The air conditioning compressor in the related technology includes a motor, which includes a rotor. The rotor is equipped with a balance block, and the outside of the balance block is usually equipped with a fan shroud. Since the fan shroud is connected to the rotor, if the connection between the fan shroud and the rotor is unstable when the rotor rotates at high speed, it will cause the fan shroud to generate a lot of noise. 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, the first objective of this invention is to provide a rotor assembly.

[0005] The second objective of this invention is to provide an electric motor.

[0006] The third objective of this invention is to provide a compressor.

[0007] The fourth objective of this invention is to provide an air conditioner.

[0008] To achieve at least one of the above objectives, according to a first aspect of the present invention, a rotor assembly is provided, comprising: a rotor core assembly; a counterweight mounted at an end of the rotor core assembly; and a shroud mounted on the rotor core assembly, the shroud and the counterweight being located on the same side of the rotor core assembly. The shroud comprises: a shroud body, at least a portion of the counterweight being located within the shroud body; and at least two lugs connected to the side of the shroud body facing the rotor core assembly, each lug protruding from the shroud body and connected to the rotor core assembly.

[0009] This application discloses a rotor assembly for use in a compressor motor. The rotor assembly includes a rotor core assembly and a balance block. The motor in which the rotor assembly is used includes a stator, and the rotor assembly is rotatable relative to the stator. The compressor in which the motor is used includes a crankshaft connected to the rotor assembly. Specifically, the crankshaft is connected to the rotor core assembly, and when the rotor assembly rotates, it drives the crankshaft to rotate. The crankshaft has an eccentric structure and rotates eccentrically. To maintain the balance of the rotor assembly, this application includes a balance block in the rotor assembly to ensure smooth rotation. Specifically, the balance block is installed at the end of the rotor core assembly, biased to one side of the rotor core assembly. This balance block can balance the eccentricity of the crankshaft, thus maintaining the balance of the rotor assembly during rotation. The balance block protrudes from the end of the rotor core assembly.

[0010] Furthermore, the rotor core assembly also includes a shroud, which protects the balance weights and reduces the noise generated by the balance weights when the rotor assembly rotates. Understandably, the compressor contains lubricating oil, and the balance weights impact the lubricating oil when the rotor assembly rotates, generating noise. To reduce the noise from the balance weights, this application also includes a shroud in the rotor assembly. Specifically, the shroud is installed on the rotor core assembly, and the shroud and balance weights are located on the same side of the rotor core assembly. The shroud can provide some obstruction to the lubricating oil, thereby reducing the noise generated by the balance weights impacting the lubricating oil when rotating with the rotor core assembly.

[0011] Furthermore, the shroud includes a shroud body and at least two lugs. The shroud body serves to block lubricating oil, and the lugs are used to connect to the rotor core assembly. Specifically, the lugs are connected to the shroud body and protrude from the edge of the shroud body facing the rotor core assembly. At least a portion of the counterweight is located within the shroud body, thereby blocking the lubricating oil through the shroud body and reducing the noise generated by the counterweight impacting the lubricating oil. The lugs are connected to the rotor core assembly to achieve the connection between the shroud and the rotor core assembly. Since the lugs are separate connection structures, they can be firmly connected to the rotor core assembly. Compared to shrouds in related technologies that do not have lug structures, the connection between the shroud and the rotor core assembly in this application is more robust. Even when the rotor core assembly drives the shroud to rotate at high speed, the shroud can remain stable, reducing vibrations caused by unstable connections, and thus reducing the noise generated by the rotor assembly during high-speed rotation.

[0012] By incorporating a fan shroud within the rotor assembly, the lubricating oil is blocked, reducing the noise generated by the counterweight impacting the lubricating oil as it rotates with the rotor core assembly. Furthermore, by adding lugs protruding from the shroud body, the fan shroud can connect to the rotor core assembly, enhancing its stability and ensuring its stability during rotor core rotation. This reduces vibrations caused by unstable connections, thereby lowering noise generated by the rotor assembly at high speeds and ultimately reducing overall motor noise during operation.

[0013] The rotor assembly according to the present invention may also have the following distinguishing technical features:

[0014] In some technical solutions, optionally, any lug includes: a connecting plate connected to the shroud body and extending in the direction toward the rotor core assembly; and a mounting plate connected to the end of the connecting plate away from the shroud body, the mounting plate being in contact with the end face of the rotor core assembly, and the mounting plate being able to be installed on the rotor core assembly.

[0015] In this technical solution, the structure of the mounting lugs is defined. Each mounting lug includes a connecting plate and a mounting plate. The mounting plate is used to connect to the rotor core assembly, and the connecting plate is used to connect the mounting plate to the shroud body. Specifically, the connecting plate is connected to the edge of the shroud body and extends in the direction toward the rotor core assembly, that is, the connecting plate protrudes from the edge of the shroud body. The mounting plate is connected to the end of the connecting plate away from the shroud body, and the mounting plate can be installed on the rotor core assembly. In this way, the shroud can be installed and fixed by the cooperation between the mounting plate and the rotor core assembly.

[0016] Furthermore, the mounting plate fits snugly against the end face of the rotor core assembly, thereby increasing the contact area between the lugs and the rotor core assembly and further improving the stability of the shroud.

[0017] In some technical solutions, the mounting plate may optionally extend in a direction toward the axis of the rotor core assembly.

[0018] In this technical solution, the mounting plate is further defined. The mounting plate extends along the axis toward the rotor core assembly, that is, it extends toward the inner side of the shroud body. This prevents the mounting plate from protruding beyond the edge of the rotor core assembly, thus avoiding interference between the mounting plate and other components in the compressor. Furthermore, by extending the mounting plate along the axis toward the rotor core assembly, the contact area between the mounting plate and the end faces of the rotor core assembly is increased, improving the connection reliability between the mounting plate and the rotor core assembly.

[0019] The mounting plate can be circular, triangular, rectangular, or other polygonal in shape.

[0020] In some technical solutions, optionally, any mounting plate has a first mounting hole, the shroud body has at least two second mounting holes, the second mounting holes are configured to correspond one-to-one with the first mounting holes, and the rotor assembly further includes: at least two first connectors, the first connectors passing through the corresponding second mounting holes and the first mounting holes in sequence and connected to the rotor core assembly.

[0021] In this technical solution, the structure of the shroud is further defined. Each mounting plate has a first mounting hole, and the shroud body has at least two second mounting holes, each corresponding to one of the first mounting holes. The rotor assembly includes at least two first connecting members, which are adapted to the first and second mounting holes. Specifically, the number of first connecting members is the same as the number of first and second mounting holes, and each first connecting member corresponds to one of the first and second mounting holes. The first connecting members pass sequentially through the corresponding second and first mounting holes and are then connected to the rotor core assembly. This allows the shroud to be mounted on the rotor core assembly, achieving the installation and fixation of the shroud. The first connecting members can be rivets.

[0022] In some technical solutions, optionally, the main body of the hood includes: a hood body, with a hanging ear connected to the hood body; an end plate connected to the end of the hood body away from the hanging ear, and a second mounting hole provided on the end plate.

[0023] In this technical solution, the structure of the main body of the shroud is defined. The main body of the shroud includes a shroud body and end plates. The shroud body is a cylindrical structure with lugs attached to its edge. The end plates are plate-shaped and are attached to the end of the shroud away from the lugs; a second mounting hole is located on the end plates. By incorporating a shroud body and end plates within the shroud, the shroud can effectively block lubricating oil from multiple directions, thereby improving its noise reduction effect.

[0024] In some technical solutions, the end plate may optionally have an axis of symmetry, with at least two lugs symmetrically arranged relative to the axis of symmetry.

[0025] This technical solution defines the arrangement of the lugs. The end plate has an axis of symmetry, which is the center line of the end plate, and at least two lugs are symmetrically arranged relative to this axis of symmetry. When the number of lugs is even, multiple lugs are arranged on both sides of the axis of symmetry. When the number of lugs is odd, the projection of one lug on the end plate lies on the axis of symmetry, and the remaining lugs are symmetrically arranged on both sides of the axis of symmetry. In this way, the overall force on the wind shield is balanced, improving the stability of the wind shield.

[0026] In some technical solutions, the end plate is optionally provided with at least two third mounting holes, which correspond to the setting of the balance block. The rotor assembly also includes at least two second connectors, any of which passes through the corresponding third mounting hole and connects the balance block to the rotor core assembly.

[0027] In this technical solution, the rotor assembly is further defined. At least two third mounting holes are provided on the end plate, corresponding to the counterweights. The rotor assembly also includes at least two second connectors for mounting the counterweights. Specifically, at least two second connectors correspond one-to-one with at least two third mounting holes. Each second connector first passes through the corresponding third mounting hole, and then the counterweight is connected to the rotor core assembly. In this way, while the counterweights are being installed and fixed, the shroud is further installed and fixed via the second connectors, further connecting the shroud assembly to the rotor core assembly and improving the stability of the shroud. The second connectors can be rivets.

[0028] In some technical solutions, optionally, at least two third mounting holes are arranged symmetrically with respect to the axis of symmetry.

[0029] In this technical solution, the arrangement of at least two third mounting holes is defined. Specifically, at least two third mounting holes are symmetrically arranged with respect to the axis of symmetry of the end plate. When the number of third mounting holes is even, multiple third mounting holes are respectively arranged on both sides of the axis of symmetry. When the number of third mounting holes is odd, one third mounting hole is located on the axis of symmetry, and the remaining third mounting holes are symmetrically arranged on both sides of the axis of symmetry. In this way, the overall force on the fan cover can be balanced, improving the stability of the fan cover.

[0030] In some technical solutions, the third mounting hole and the second mounting hole are optionally located near the two ends of the end plate.

[0031] In this technical solution, the relative positions of the third mounting hole and the second mounting hole are defined. Specifically, the third mounting hole and the second mounting hole are located close to the two ends of the end plate, respectively. Since the first connector passes through the second mounting hole to connect the shroud to the rotor core assembly, and the second connector passes through the third mounting hole to connect the shroud to the rotor core assembly, by making the third mounting hole and the second mounting hole close to the two ends of the end plate, the overall force on the shroud can be balanced, avoiding the situation of localized force on one side, thereby improving the stability of the shroud.

[0032] In some technical solutions, the end plate is optionally provided with weight reduction holes.

[0033] In this technical solution, the structure of the fan shroud is further defined. Specifically, to reduce the overall weight of the fan shroud, weight-reducing holes are provided on the end plate. Specifically, the weight-reducing holes are located at the center of the end plate to prevent the center of gravity of the end plate from shifting. By providing weight-reducing holes on the end plate, the overall weight of the fan shroud can be reduced, thereby reducing noise generated by fan shroud vibration when the fan shroud rotates at high speed with the rotor core assembly. Furthermore, since the compressor crankshaft passes through the weight-reducing holes, it also provides a certain degree of sealing, preventing external lubricating oil from impacting the balance weight inside the fan shroud.

[0034] In some technical solutions, the ear loops and the main body of the windshield can be integrally formed.

[0035] In this technical solution, the structure of the wind shield is further defined. The lugs are integrally formed with the main body of the wind shield. This improves both the processing efficiency and the integrity of the wind shield, thereby enhancing its overall strength.

[0036] A second aspect of the invention also provides an electric motor comprising the rotor assembly proposed in the first aspect of the invention.

[0037] The motor provided by the second aspect of the present invention, having the rotor assembly proposed in the first aspect of the present invention, has all the beneficial effects of the rotor assembly.

[0038] A third aspect of the invention also provides a compressor comprising the motor described in the second aspect of the invention.

[0039] The compressor provided in the third aspect of the present invention, having the motor proposed in the second aspect of the present invention, has all the beneficial effects of a motor.

[0040] In some technical solutions, the compressor may optionally include a crankshaft that passes through the shroud of the rotor assembly and is connected to the rotor core assembly of the rotor assembly.

[0041] In this technical solution, the structure of the compressor is defined. The compressor also includes a crankshaft, which is connected to the rotor core assembly of the rotor assembly. When the rotor core assembly rotates, it drives the crankshaft to rotate accordingly. The crankshaft has an eccentric structure, and the balance weight in the rotor assembly can balance the eccentricity of the crankshaft. The crankshaft passes through the fan shroud of the rotor assembly and is connected to the rotor core of the rotor assembly. The fan shroud has a weight-reducing hole, through which the crankshaft passes. Therefore, the crankshaft can play a certain role in sealing the weight-reducing hole, preventing external lubricating oil from impacting the balance weight inside the fan shroud.

[0042] A fourth aspect of the invention also provides an air conditioner comprising the compressor described in the third aspect of the invention.

[0043] The air conditioner provided in the fourth aspect of the present invention, having the compressor proposed in the third aspect of the present invention, has all the beneficial effects of the compressor.

[0044] Additional aspects and advantages of the invention will become apparent in the following description or may be learned by practice of the invention. Attached Figure Description

[0045] 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:

[0046] Figure 1 One of the structural schematic diagrams of a compressor according to an embodiment of the present invention is shown;

[0047] Figure 2 A second schematic diagram of the compressor according to an embodiment of the present invention is shown;

[0048] Figure 3 One of the structural schematic diagrams of a wind shield according to an embodiment of the present invention is shown;

[0049] Figure 4 A second schematic diagram of the structure of the wind shield according to an embodiment of the present invention is shown;

[0050] Figure 5 The third schematic diagram shows the structure of the wind shield according to an embodiment of the present invention;

[0051] Figure 6 It shows Figure 5 Sectional view of section AA;

[0052] Figure 7 The fourth schematic diagram shows the structure of the wind shield according to an embodiment of the present invention;

[0053] Figure 8 It shows Figure 7 A partial sectional view of section BB in the middle;

[0054] Figure 9 Fifth schematic diagram of the structure of the wind shield according to an embodiment of the present invention is shown;

[0055] Figure 10 A schematic diagram of the structure of a wind shield according to an embodiment of the present invention is shown in Figure 6.

[0056] Figure 11 The seventh schematic diagram shows the structure of a wind shield according to an embodiment of the present invention.

[0057] in, Figures 1 to 11 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0058] 100 Rotor assembly, 110 Rotor core assembly, 120 Balance block, 130 Fan shroud, 140 Fan shroud body, 141 Shaft body, 142 End plate, 143 Second mounting hole, 144 Third mounting hole, 145 Weight reduction hole, 150 Hanger, 151 Connecting plate, 152 Mounting plate, 153 First mounting hole, 160 First connector, 170 Second connector, 200 Compressor, 210 Crankshaft. Detailed Implementation

[0059] 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.

[0060] 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.

[0061] The following reference Figures 1 to 11 The present invention describes a rotor assembly 100, a motor, a compressor 200, and an air conditioner provided according to some embodiments thereof.

[0062] In one embodiment according to this application, such as Figure 1 , Figure 2, Figure 3 and Figure 4 As shown, in a first aspect, a rotor assembly 100 is provided, comprising: a rotor core assembly 110; a counterweight 120 mounted at the end of the rotor core assembly 110; and a shroud 130 mounted on the rotor core assembly 110, wherein the shroud 130 and the counterweight 120 are located on the same side of the rotor core assembly 110. The shroud 130 comprises: a shroud body 140, wherein at least a portion of the counterweight 120 is located within the shroud body 140; and at least two lugs 150 connected to the side of the shroud body 140 facing the rotor core assembly 110, wherein any lug 150 protrudes from the shroud body 140 and is connected to the rotor core assembly 110.

[0063] This application discloses a rotor assembly 100 used in the motor of a compressor 200. The rotor assembly 100 includes a rotor core assembly 110 and a balance block 120. The motor in which the rotor assembly 100 is used includes a stator, and the rotor assembly 100 is rotatable relative to the stator. The compressor 200 in which the motor is used includes a crankshaft 210, which is connected to the rotor assembly 100. Specifically, the crankshaft 210 is connected to the rotor core assembly 110, and when the rotor assembly 100 rotates, it drives the crankshaft 210 to rotate. The crankshaft 210 has an eccentric structure and rotates eccentrically. To maintain the balance of the rotor assembly 100, this application provides a balance block 120 in the rotor assembly 100 to ensure smooth rotation. Specifically, the balance block 120 is installed at the end of the rotor core assembly 110, and the balance block 120 is biased to one side of the rotor core assembly 110. In this way, the eccentricity of the crankshaft 210 can be balanced by the balance block 120, so that the rotor assembly 100 remains balanced during rotation. The balance block 120 protrudes from the end of the rotor core assembly 110.

[0064] Furthermore, the rotor core assembly 110 also includes a fan shroud 130, which protects the balance block 120 and reduces the noise generated by the balance block 120 when the rotor assembly 100 rotates. Understandably, the compressor 200 contains lubricating oil, and the balance block 120 impacts the lubricating oil when the rotor assembly 100 rotates, generating noise. To reduce the noise of the balance block 120, this application also provides a fan shroud 130 in the rotor assembly 100. Specifically, the fan shroud 130 is installed on the rotor core assembly 110, and the fan shroud 130 and the balance block 120 are located on the same side of the rotor core assembly 110. The fan shroud 130 can provide a certain degree of obstruction to the lubricating oil, thereby reducing the noise generated by the balance block 120 impacting the lubricating oil when rotating with the rotor core assembly 110.

[0065] Furthermore, the shroud 130 includes a shroud body 140 and at least two lugs 150. The shroud body 140 is used to block lubricating oil, and the lugs 150 are used to connect with the rotor core assembly 110. Specifically, the lugs 150 are connected to the shroud body 140 and protrude from the edge of the shroud body 140 facing the rotor core assembly 110. At least a portion of the balance block 120 is located inside the shroud body 140, thereby blocking the lubricating oil through the shroud body 140 and reducing the noise generated by the balance block 120 impacting the lubricating oil. The lugs 150 are connected to the rotor core assembly 110 to realize the connection between the shroud 130 and the rotor core assembly 110. Since the lug 150 is a separate connection structure, it can be firmly connected to the rotor core assembly 110. Compared with the shrouds in related technologies that do not have a lug structure, the connection between the shroud 130 and the rotor core assembly 110 in this application is more secure. Even when the rotor core assembly 110 drives the shroud 130 to rotate at high speed, the shroud 130 can remain stable, reducing the vibration of the shroud 130 due to unstable connection, thereby reducing the noise generated by the rotor assembly 100 when rotating at high speed and reducing the noise when the motor is working.

[0066] By providing a shroud 130 in the rotor assembly 100, the lubricating oil can be blocked by the shroud 130, thereby reducing the noise generated by the counterweight 120 impacting the lubricating oil when rotating with the rotor core assembly 110. By providing a lug 150 protruding from the shroud body 140 in the shroud 130, it can be connected to the rotor core assembly 110 through the lug 150, improving the stability of the shroud 130, keeping the shroud 130 stable when rotating with the rotor core, reducing the vibration of the shroud 130 due to unstable connection, and thus reducing the noise generated by the rotor assembly 100 when rotating at high speed.

[0067] In some embodiments, optionally, Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, any of the lugs 150 includes: a connecting plate 151, which is connected to the shroud body 140 and extends in the direction toward the rotor core assembly 110; and a mounting plate 152, which is connected to the end of the connecting plate 151 away from the shroud body 140. The mounting plate 152 is in contact with the end face of the rotor core assembly 110 and can be mounted on the rotor core assembly 110.

[0068] In this embodiment, the structure of the lug 150 is defined. Each lug 150 includes a connecting plate 151 and a mounting plate 152. The mounting plate 152 is used to connect to the rotor core assembly 110, and the connecting plate 151 is used to connect the mounting plate 152 to the shroud body 140. Specifically, the connecting plate 151 is connected to the edge of the shroud body 140 and extends in the direction toward the rotor core assembly 110, that is, the connecting plate 151 protrudes from the edge of the shroud body 140. The mounting plate 152 is connected to the end of the connecting plate 151 away from the shroud body 140, and the mounting plate 152 can be installed on the rotor core assembly 110. In this way, the shroud 130 can be installed and fixed by the cooperation of the mounting plate 152 and the rotor core assembly 110.

[0069] Furthermore, the mounting plate 152 is attached to the end face of the rotor core assembly 110, which increases the contact area between the lug 150 and the rotor core assembly 110, thereby further improving the stability of the shroud 130.

[0070] In some embodiments, the mounting plate 152 extends in a direction toward the axis of the rotor core assembly 110.

[0071] In this embodiment, the mounting plate 152 is further defined. The mounting plate 152 extends in a direction toward the axis of the rotor core assembly 110, that is, it extends in a direction toward the inside of the shroud body 140. This prevents the mounting plate 152 from protruding beyond the edge of the rotor core assembly 110, thus avoiding interference between the mounting plate 152 and other components in the compressor 200. Furthermore, by extending the mounting plate 152 in a direction toward the axis of the rotor core assembly 110, the contact area between the mounting plate 152 and the end face of the rotor core assembly 110 is increased, improving the connection reliability between the mounting plate 152 and the rotor core assembly 110.

[0072] The shape of the mounting plate 152 can be circular, triangular, rectangular or other polygonal.

[0073] In some embodiments, optionally, Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, any mounting plate 152 has a first mounting hole 153, and the shroud body 140 has at least two second mounting holes 143. The second mounting holes 143 are arranged in a one-to-one correspondence with the first mounting holes 153. The rotor assembly 100 also includes at least two first connectors 160. The first connectors 160 pass through the corresponding second mounting holes 143 and first mounting holes 153 in sequence and are connected to the rotor core assembly 110.

[0074] In this embodiment, the structure of the shroud 130 is further defined. Each mounting plate 152 has a first mounting hole 153, and the shroud body 140 has at least two second mounting holes 143, each corresponding to one of the first mounting holes 153. The rotor assembly 100 includes at least two first connectors 160, which are adapted to the first mounting holes 153 and the second mounting holes 143. Specifically, the number of first connectors 160 is the same as the number of first mounting holes 153 and second mounting holes 143, and each first connector 160 corresponds to one of the first mounting holes 153 and the second mounting holes 143. The first connectors 160 pass sequentially through the corresponding second mounting holes 143 and first mounting holes 153, and then connect to the rotor core assembly 110. This allows the shroud 130 to be mounted on the rotor core assembly 110, achieving the installation and fixation of the shroud 130. The first connectors 160 can be rivets.

[0075] In some embodiments, optionally, Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 10 and Figure 11 As shown, the main body 140 of the hood includes: a hood body 141, with a hanging ear 150 connected to the hood body 141; an end plate 142 connected to the end of the hood body 141 away from the hanging ear 150, and a second mounting hole 143 provided on the end plate 142.

[0076] In this embodiment, the structure of the wind shield body 140 is defined. The wind shield body 140 includes a shield 141 and an end plate 142. The shield 141 has a cylindrical structure, and a lug 150 is connected to the edge of the shield 141. The end plate 142 has a plate-like structure and is connected to the end of the shield 141 away from the lug 150. A second mounting hole 143 is provided in the end plate 142. By providing the shield 141 and end plate 142 in the wind shield 130, the wind shield 130 can block lubricating oil from multiple directions, thereby improving the noise reduction effect of the wind shield 130.

[0077] In some embodiments, optionally, such as Figure 7 As shown, the end plate 142 has an axis of symmetry, and at least two lugs 150 are symmetrically arranged with respect to the axis of symmetry.

[0078] In this embodiment, the arrangement of the lugs 150 is defined. The end plate 142 has an axis of symmetry, which is the center line of the end plate 142, and at least two lugs 150 are symmetrically arranged with respect to this axis of symmetry. When the number of lugs 150 is even, the lugs 150 are respectively arranged on both sides of the axis of symmetry. When the number of lugs 150 is odd, the projection of one lug 150 on the end plate 142 lies on the axis of symmetry, and the remaining lugs 150 are symmetrically arranged on both sides of the axis of symmetry. In this way, the overall force on the shroud 130 can be balanced, improving the stability of the shroud 130.

[0079] In some embodiments, optionally, such as Figure 2 , Figure 5 and Figure 7 As shown, the end plate 142 is also provided with at least two third mounting holes 144, which correspond to the balance block 120. The rotor assembly 100 also includes at least two second connectors 170, any second connector 170 passing through the corresponding third mounting hole 144 and connecting the balance block 120 to the rotor core assembly 110.

[0080] In this embodiment, the rotor assembly 100 is further defined. The end plate 142 is also provided with at least two third mounting holes 144, which correspond to the balance block 120. The rotor assembly 100 also includes at least two second connectors 170, which are used to mount the balance block 120. Specifically, at least two second connectors 170 are configured one-to-one with at least two third mounting holes 144. Each second connector 170 first passes through the corresponding third mounting hole 144, and then the balance block 120 is connected to the rotor core assembly 110. In this way, while the balance block 120 is being mounted and fixed, the fan shroud 130 can be further mounted and fixed via the second connectors 170, further connecting the fan shroud 130 assembly to the rotor core assembly 110 via the second connectors 170, thus improving the stability of the fan shroud 130. The second connectors 170 can be rivets.

[0081] In some embodiments, optionally, such as Figure 5 and Figure 7 As shown, at least two third mounting holes 144 are symmetrically arranged with respect to the axis of symmetry.

[0082] In this embodiment, the arrangement of at least two third mounting holes 144 is defined. Specifically, at least two third mounting holes 144 are symmetrically arranged with respect to the axis of symmetry of the end plate 142. When the number of third mounting holes 144 is even, multiple third mounting holes 144 are respectively arranged on both sides of the axis of symmetry. When the number of third mounting holes 144 is odd, one third mounting hole 144 is located on the axis of symmetry, and the remaining third mounting holes 144 are symmetrically arranged on both sides of the axis of symmetry. In this way, the overall force on the fan cover 130 can be balanced, improving the stability of the fan cover 130.

[0083] In some embodiments, optionally, such as Figure 5 and Figure 7 As shown, the third mounting hole 144 and the second mounting hole 143 are located near the two ends of the end plate 142, respectively.

[0084] In this embodiment, the relative positions of the third mounting hole 144 and the second mounting hole 143 are defined. Specifically, the third mounting hole 144 and the second mounting hole 143 are respectively close to the two ends of the end plate 142. Since the first connector 160 passes through the second mounting hole 143 to connect the shroud 130 to the rotor core assembly 110, and the second connector 170 passes through the third mounting hole 144 to connect the shroud 130 to the rotor core assembly 110, by making the third mounting hole 144 and the second mounting hole 143 close to the two ends of the end plate 142, the shroud 130 can be subjected to balanced force as a whole, avoiding the situation of localized force on one side, thereby improving the stability of the shroud 130.

[0085] In some embodiments, optionally, such as Figure 5 and Figure 7 As shown, the end plate 142 is provided with a weight reduction hole 145.

[0086] In this embodiment, the structure of the fan shroud 130 is further defined. Specifically, to reduce the overall weight of the fan shroud 130, a weight-reducing hole 145 is provided on the end plate 142. Specifically, the weight-reducing hole 145 is located at the center of the end plate 142 to prevent the center of gravity of the end plate 142 from becoming skewed. By providing the weight-reducing hole 145 on the end plate 142, the overall weight of the fan shroud 130 can be reduced, and the noise generated by the vibration of the fan shroud 130 can be reduced when the fan shroud 130 rotates at high speed with the rotor core assembly 110. Furthermore, since the crankshaft 210 of the compressor 200 passes through the weight-reducing hole 145, it can also play a certain role in sealing the weight-reducing hole 145, preventing external lubricating oil from impacting the balance block 120 inside the fan shroud 130.

[0087] In some embodiments, the ear loop 150 is optionally integrally formed with the shroud body 140.

[0088] In this embodiment, the structure of the wind shield 130 is further defined. The lug 150 is integrally formed with the wind shield body 140. This improves the processing efficiency of the wind shield 130 and enhances its integrity, thereby increasing the overall strength of the wind shield 130.

[0089] A second aspect of the invention also provides an electric motor comprising the rotor assembly 100 proposed in the first aspect of the invention.

[0090] The motor provided in the second aspect of the present invention, having the rotor assembly 100 proposed in the first aspect of the present invention, has all the beneficial effects of the rotor assembly 100.

[0091] A third aspect of the invention also provides a compressor 200, which includes the motor proposed in the second aspect of the invention.

[0092] The compressor 200 provided in the third aspect of the present invention, having the motor proposed in the second aspect of the present invention, has all the beneficial effects of a motor.

[0093] In some embodiments, optionally, such as Figure 2 As shown, the compressor 200 also includes a crankshaft 210, which passes through the shroud 130 of the rotor assembly 100 and is connected to the rotor core assembly 110 of the rotor assembly 100.

[0094] In this embodiment, the structure of the compressor 200 is defined. The compressor 200 also includes a crankshaft 210, which is connected to the rotor core assembly 110 of the rotor assembly 100. When the rotor core assembly 110 rotates, it drives the crankshaft 210 to rotate accordingly. The crankshaft 210 has an eccentric structure, and the balance block 120 in the rotor assembly 100 can balance the eccentricity of the crankshaft 210. The crankshaft 210 passes through the fan shroud 130 of the rotor assembly 100 and is connected to the rotor core of the rotor assembly 100. The fan shroud 130 is provided with a weight reduction hole 145, through which the crankshaft 210 passes. Therefore, the crankshaft 210 can play a certain role in sealing the weight reduction hole 145, preventing external lubricating oil from impacting the balance block 120 inside the fan shroud 130.

[0095] A fourth aspect of the present invention also provides an air conditioner comprising the compressor 200 described in the third aspect of the present invention.

[0096] The air conditioner provided in the fourth aspect of the present invention, having the compressor 200 proposed in the third aspect of the present invention, has all the beneficial effects of the compressor 200.

[0097] like Figure 2As shown, in one possible embodiment, the motor rotor (i.e., rotor assembly 100) includes a rotor core (i.e., rotor core assembly 110), a counterweight 120, and a fan shroud 130. Figure 5 As shown, the fan cover 130 is designed with a lug-type structure (i.e., lug 150), which is symmetrically distributed about section AA. This lug-type structure is used to fix the balance block 120 to the rotor core. It is suitable for high-speed operation and increases the riveting force between the fan cover 130 and the rotor core. The end face (end plate 142) of the fan cover 130 has at least two sets of circular holes symmetrical about section AA (i.e., second mounting hole 143 and third mounting hole 144). One set (the third mounting hole 144) is fixed to the end face of the balance block 120, and at least one set (the second mounting hole 143) meets the positioning requirements of the balance block 120 and the lug-type structure. The shape of the lug-type structure can be circular, triangular, rectangular, or other polygonal. The fan cover 130 with the lug-type structure can balance the vibration caused by mass imbalance during motor operation, reduce overall motor noise, and ensure motor reliability and efficiency.

[0098] In this invention, the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" 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 invention according to the specific circumstances.

[0099] 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.

[0100] 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 assembly; A counterweight is installed at the end of the rotor core assembly; A shroud, installed on the rotor core assembly, wherein the shroud and the counterweight are located on the same side of the rotor core assembly, and the shroud comprises: The wind shield body, at least a portion of the balance block is located inside the wind shield body; At least two lugs are connected to the side of the shroud body facing the rotor core assembly, and any one of the lugs protrudes from the shroud body and is connected to the rotor core assembly.

2. The rotor assembly according to claim 1, characterized in that, Any of the aforementioned loops includes: A connecting plate is attached to the shroud body and extends toward the rotor core assembly; A mounting plate is connected to the end of the connecting plate away from the main body of the shroud. The mounting plate is in contact with the end face of the rotor core assembly and can be installed on the rotor core assembly.

3. The rotor assembly according to claim 2, characterized in that, The mounting plate extends in the direction toward the axis of the rotor core assembly.

4. The rotor assembly according to claim 2, characterized in that, Each of the mounting plates has a first mounting hole, the shroud body has at least two second mounting holes, the second mounting holes corresponding one-to-one with the first mounting holes, and the rotor assembly further includes: At least two first connectors are connected to the rotor core assembly by passing through corresponding second mounting holes and first mounting holes in sequence.

5. The rotor assembly according to claim 4, characterized in that, The main body of the wind shield includes: The cover body, with the hanging ears connected to the cover body; An end plate is connected to the end of the cover away from the hanging ear, and the second mounting hole is provided on the end plate.

6. The rotor assembly according to claim 5, characterized in that, The end plate has an axis of symmetry, and at least two of the hooks are symmetrically arranged with respect to the axis of symmetry.

7. The rotor assembly according to claim 6, characterized in that, The end plate is further provided with at least two third mounting holes, the third mounting holes corresponding to the balance block, and the rotor assembly further includes: At least two second connectors, each of which passes through a corresponding third mounting hole, connect the balance block to the rotor core assembly.

8. The rotor assembly according to claim 7, characterized in that, At least two of the third mounting holes are symmetrically arranged with respect to the axis of symmetry.

9. The rotor assembly according to claim 7, characterized in that, The third mounting hole and the second mounting hole are respectively located near the two ends of the end plate.

10. The rotor assembly according to claim 5, characterized in that, The end plate is provided with weight reduction holes.

11. The rotor assembly according to any one of claims 1 to 10, characterized in that, The hanging ear is integrally formed with the main body of the wind cover.

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 motor as described in claim 12.

14. The compressor according to claim 13, characterized in that, Also includes: A crankshaft that passes through the shroud of the rotor assembly and is connected to the rotor core assembly of the rotor assembly.

15. An air conditioner, characterized in that, include: The compressor as described in claim 13 or 14.

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