Rotor assembly, compressor and refrigeration appliance

Abstract

The application provides a rotor assembly, a compressor and a refrigeration device, wherein the rotor assembly comprises: a rotor core; a balance component connected with the rotor core and arranged on one side of the rotor core in the axial direction, the balance component comprising a shielding part and a counterweight part, the shielding part is provided with a mounting cavity, the opening of the mounting cavity faces the rotor core, and the counterweight part is offset relative to the axis of the rotor core and arranged in the mounting cavity.

Description

Technical Field

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

[0002] Currently, in related technologies, when the compressor is running at high speed, the agitation of the counterweight or balance block will disperse the discharged gas, or a large amount of gas may be discharged upward through the stator tangent, which will affect the effect of refrigeration oil return, increase compressor oil discharge, and be detrimental to the stability of the lower oil sump. Summary of the Invention

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

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

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

[0006] A third aspect of the present invention provides a refrigeration device.

[0007] In view of this, the first aspect of the present invention provides a rotor assembly including a rotor core and a balancing component. The balancing component is connected to the rotor core and disposed on one side of the rotor core in the axial direction. The balancing component includes a shielding part and a counterweight part. The shielding part is provided with a mounting cavity, the opening of which faces the rotor core. The counterweight part is offset relative to the axis of the rotor core and disposed within the mounting cavity.

[0008] The rotor assembly proposed in this invention can be specifically applied to compressors. The rotor assembly includes a rotor core and a balancing component, which is used to dynamically balance the rotor core during operation. In terms of its placement, the balancing component is connected to the rotor core and positioned on one axial side of the rotor core. The balancing component increases the weight on the axial side of the rotor core, thereby balancing the forces on both sides of the rotor core in the axial direction when the rotor core rotates. This keeps the rotor core in a stable dynamic balance state, improving its stability during high-speed rotation. Consequently, compressors using the rotor assembly proposed in this invention experience less vibration during operation.

[0009] The balancing component includes a shielding part and a counterweight part. The shielding part of the balancing component has a mounting cavity with its opening facing the rotor core. The counterweight part of the balancing component is offset relative to the axis of the rotor core and is located in the mounting cavity.

[0010] The counterweight is offset relative to the rotor core's axis to provide counterweight for the rotor core, thereby ensuring stable rotation. The shielding part encloses the counterweight through its mounting cavity, achieving weight balance for the rotor core while reducing airflow disturbance. Specifically, during rotor assembly rotation, airflow moves towards the negative pressure area, and refrigerant oil flows back through the cut edge of the rotor core. Without shielding, the counterweight would disturb the airflow during rotation, causing it to disperse and be discharged to the cut edge, obstructing refrigerant oil flow and hindering oil return. This invention uses a shielding part to enclose the counterweight, reducing airflow disturbance and preventing airflow from obstructing refrigerant oil flow to the cut edge. This results in smoother refrigerant oil return, and the airflow is not disturbed by the counterweight, making its flow towards the negative pressure area smoother, thus improving exhaust efficiency.

[0011] In summary, the rotor assembly proposed in this invention, by setting a balancing component including a counterweight and a shielding part, uses the counterweight to change the force balance state of the rotor assembly and uses the shielding part to block the disturbance of airflow by the counterweight, thereby enabling the rotor core to have a more stable motion state. This can correspondingly improve the oil sump stability of the compressor at high speed, reduce oil discharge, ensure the effect of refrigeration oil return, and improve the reliability of the compressor when running at high speed.

[0012] In addition, the rotor assembly in the above-mentioned technical solution provided by the present invention may also have the following additional technical features:

[0013] In some technical solutions of the present invention, optionally, the shielding part includes a first shielding member, which is plate-shaped and disposed on the side of the counterweight part away from the rotor core in the axial direction.

[0014] In this technical solution, the shielding part includes a first shielding member, which is disposed on the side of the counterweight part away from the rotor core in the axial direction. The first shielding member can block the disturbance of the airflow by the counterweight part in the axial direction.

[0015] The first shielding component is plate-shaped. The plate shape allows the first shielding component to have a larger shielding area, which can ensure the shielding effect on the counterweight in the axial direction. At the same time, the plate shape can also reduce the disturbance of the airflow by the first shielding component itself.

[0016] In some technical solutions of the present invention, optionally, the shielding part further includes a second shielding member, the second shielding member is arranged circumferentially along the first shielding member, and the first shielding member and the second shielding member enclose the mounting cavity.

[0017] In this technical solution, the shielding part also includes a second shielding member. In the setting position, the second shielding member is arranged circumferentially along the first shielding member. The second shielding member can block the disturbance of the airflow by the counterweight part in the radial direction.

[0018] The first and second shielding components enclose the mounting cavity. The two components work together to block the counterweight from disturbing the airflow in both the axial and radial directions. The rotor core has a more stable motion state, which can improve the oil sump stability of the compressor at high speed, reduce oil discharge, and improve the reliability of the compressor when running at high speed.

[0019] In some technical solutions of the present invention, optionally, an exhaust port is provided on the side of the second shielding member away from the first shielding member, and the exhaust port passes through the second shielding member radially along the rotor core.

[0020] In this technical solution, during the operation of the rotor assembly, the mounting cavity provided by the shielding part forms a negative pressure zone, thereby drawing in the high-pressure gas discharged from the compressor. An exhaust port is provided on the side of the second shielding member away from the first shielding member, and the exhaust port penetrates the second shielding member radially along the rotor core. The exhaust port is connected to the mounting cavity, and the gas in the mounting cavity flows to the outside of the shielding part through the exhaust port, realizing the discharge of high-pressure gas in the negative pressure zone and improving the compressor's ventilation efficiency.

[0021] In some technical solutions of the present invention, optionally, the area S of the exhaust port on the curved surface where the radial sidewall of the second shielding member is located, the outer diameter R of the balancing member and the axial height H of the balancing member satisfy the following relationship: 0 < S < πRH.

[0022] In this technical solution, the area of ​​the exhaust port on the curved surface containing the radial sidewall of the second shield is S, the outer diameter of the balancing component is R, and the height of the balancing component on the axial direction is H. The relationship between the area of ​​the exhaust port on the curved surface containing the radial sidewall of the second shield, the outer diameter of the balancing component, and the height of the balancing component on the axial direction satisfies 0 < S < πRH. By setting the above dimensional relationship, the area of ​​the exhaust port can be made sufficiently large, and the exhaust port is located on the flow path of the high-pressure airflow, thereby improving the smoothness of exhaust.

[0023] In some technical solutions of the present invention, optionally, the number of exhaust ports is multiple, and the multiple exhaust ports are arranged at intervals along the circumference of the second shielding member.

[0024] In this technical solution, there are multiple exhaust ports, which can improve exhaust efficiency.

[0025] Regarding the arrangement of multiple exhaust ports on the shielding member, this application arranges the multiple exhaust ports at circumferential intervals along the second shielding member. This arrangement allows the airflow to exit at different exhaust ports without needing to travel a long distance during exhaust, thereby further improving exhaust efficiency.

[0026] In some technical solutions of the present invention, the shielding part is optionally arranged coaxially with the rotor core.

[0027] In this technical solution, the shielding part is coaxially arranged with the rotor core, and the shielding part and the rotor core have a high degree of overlap in the axial direction. This can both block the counterweight part from disturbing the airflow and reduce the disturbance of the airflow by the shielding part itself.

[0028] In some technical solutions of the present invention, the shielding part and the counterweight part are optionally integrated into one structure.

[0029] In this technical solution, the shielding part and the counterweight part are integrated into one structure. The integrated structure design facilitates the processing of the shielding part and the counterweight part, and can improve the structural strength between the shielding part and the counterweight part, so that the shielding part can stably play the shielding role, reduce the disturbance of the counterweight part to the airflow, and make the airflow smoother.

[0030] A second aspect of the present invention provides a compressor comprising a rotor assembly as described in any of the above-described technical solutions.

[0031] The compressor proposed in this invention, because it includes the rotor assembly as described in any of the above technical solutions, has all the beneficial effects of the rotor assembly in any of the above technical solutions.

[0032] In some technical solutions of the present invention, the compressor may optionally include: a stator core, which is opposite to the rotor core and has a slot; an end plate, which is disposed on the side of the stator core in the axial direction; and a winding, which is disposed in the slot and sleeved on the end plate.

[0033] In this technical solution, the compressor also includes a stator core, end plates, and windings. The stator core is opposite to the rotor core, and the stator core is provided with slots. The windings are disposed within the slots, and the end plates are disposed on the axial side of the stator core, with the windings sleeved on the end plates. The stator core, windings, and end plates constitute the stator part of the compressor, thus providing components within the compressor that cooperate with the rotor assembly, allowing the rotor assembly to rotate under driving force.

[0034] In some technical solutions of the present invention, optionally, the axial distance between the side of the end plate away from the stator core and the side of the balancing component away from the rotor core is a first distance; the axial distance between the exhaust port of the balancing component and the side of the balancing component away from the rotor core is a second distance; the second distance is greater than or equal to the first distance.

[0035] In this technical solution, the axial distance between the side of the end plate away from the stator core and the side of the balancing component away from the rotor core is the first distance, and the axial distance between the exhaust port of the balancing component and the side of the balancing component away from the rotor core is the second distance. The second distance is greater than or equal to the first distance, that is, the axial distance between the exhaust port of the balancing component and the side of the balancing component away from the rotor core is greater than the axial distance between the side of the end plate away from the stator core and the side of the balancing component away from the rotor core.

[0036] By setting the size relationship between different distances as described above, the gas discharged from the exhaust port can be blocked by the end plate, the gas changes its flow direction, and finally flows through the gap between the windings to the other side of the stator in the axial direction. The exhaust path is shortened, and the exhaust efficiency is improved.

[0037] In some technical solutions of the present invention, optionally, the exhaust port of the balancing component is oriented towards the winding.

[0038] In this technical solution, the exhaust port of the balancing component is set towards the winding, and the exhaust direction of the exhaust port is towards the end plate, so that the gas discharged from the exhaust port can be blocked by the end plate, the gas flow path is changed, and the discharged gas can flow through the gap between the windings to the other side of the stator on the axis. The exhaust path is shortened and the exhaust efficiency is improved.

[0039] In a third aspect, the present invention provides a refrigeration device comprising a compressor as described in any of the above technical solutions.

[0040] The refrigeration device proposed in the third aspect of the present invention, since it includes a compressor as described in any of the above-described technical solutions, has all the beneficial effects of the compressor in any of the above-described technical solutions.

[0041] Specifically, refrigeration equipment includes air conditioners, refrigerators, freezers, wine cabinets, display cases, etc.

[0042] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0043] 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:

[0044] Figure 1 One of the structural schematic diagrams of the balancing component in a rotor assembly according to one embodiment of the present invention is shown;

[0045] Figure 2 A second schematic diagram of the structure of the balancing component in a rotor assembly according to one embodiment of the present invention is shown;

[0046] Figure 3 The third schematic diagram shows the structure of the balancing component in the rotor assembly according to one embodiment of the present invention;

[0047] Figure 4 One of the schematic diagrams of the rotor assembly in one embodiment of the present invention is shown;

[0048] Figure 5 A second schematic diagram of the rotor assembly in one embodiment of the present invention is shown;

[0049] Figure 6 A schematic diagram of the compressor in one embodiment of the present invention is shown.

[0050] in, Figures 1 to 6 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0051] 100 Compressor, 110 Rotor assembly, 112 Rotor core, 120 Balancing component, 122 Shielding part, 124 First shielding component, 126 Second shielding component, 128 Exhaust port, 130 Mounting cavity, 132 Opening, 134 Counterweight, 140 Stator core, 142 Wire groove, 144 End plate, 146 Winding. Detailed Implementation

[0052] 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.

[0053] 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.

[0054] The following reference Figures 1 to 6 The present invention is described in some embodiments of the rotor assembly 110, compressor 100 and refrigeration equipment.

[0055] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, in one embodiment of the present invention, a rotor assembly 110 is provided, wherein the rotor assembly 110 includes a rotor core 112 and a balancing component 120. The balancing component 120 is connected to the rotor core 112 and is disposed on one side of the rotor core 112 in the axial direction. The balancing component 120 includes a shielding part 122 and a counterweight part 134. The shielding part 122 is provided with a mounting cavity 130. The opening 132 of the mounting cavity 130 faces the rotor core 112. The counterweight part 134 is offset relative to the axis of the rotor core 112 and is disposed within the mounting cavity 130.

[0056] In this embodiment, the rotor assembly 110 proposed in this invention can be specifically applied to the compressor 100. The rotor assembly 110 includes a rotor core 112 and a balancing component 120. The balancing component 120 is used to adjust the dynamic balance of the rotor core 112 in motion.

[0057] In its placement, the balancing component 120 is connected to the rotor core 112 and is positioned on one axial side of the rotor core 112. The balancing component 120 increases the weight on the axial side of the rotor core 112, thereby balancing the forces on both sides of the rotor core 112 in the axial direction when the rotor core 112 rotates, keeping the rotor core 112 in a stable dynamic balance state, improving the stability of the rotor core 112 during high-speed rotation, and resulting in less vibration in the compressor 100 using the rotor assembly 110 proposed in this invention during operation.

[0058] The balancing component 120 includes a shielding part 122 and a counterweight part 134. The shielding part 122 of the balancing component 120 is provided with a mounting cavity 130. The opening 132 of the mounting cavity 130 faces the rotor core 112. The counterweight part 134 of the balancing component 120 is offset relative to the axis of the rotor core 112 and is disposed in the mounting cavity 130.

[0059] The counterweight 134 is offset relative to the axis of the rotor core 112 to provide counterweight for the rotor core 112, thereby enabling the rotor core 112 to rotate stably. The shielding part 122 encloses the counterweight 134 through its mounting cavity 130, thereby achieving weight balance using the counterweight 134 while reducing the disturbance of the airflow by the counterweight 134, making the gas flow smoother. Specifically, during the rotation of the rotor assembly 110, the airflow flows towards the negative pressure area, and the refrigerant oil will return through the cut edge of the rotor core 112. If the counterweight 134 is not shielded during rotation, it will disturb the airflow, and the disturbed airflow will be dispersed and discharged to the cut edge, which will block the flow of refrigerant oil at the cut edge, thus hindering the oil return. The present invention utilizes the shielding part to wrap the counterweight part 134, thereby reducing the disturbance of the airflow by the counterweight part 134, preventing the airflow from flowing to the cut edge and blocking the flow of refrigeration oil, making the return of refrigeration oil smoother, and the airflow will not be disturbed by the counterweight part 134, and its flow to the negative pressure area is also smoother.

[0060] In summary, the rotor assembly 110 proposed in this invention, by setting a balancing component 120 including a counterweight 134 and a shielding part 122, changes the force balance state of the rotor assembly 110 by using the counterweight 134 and blocks the disturbance of airflow by the counterweight 134, thereby enabling the rotor assembly 110 to have a more stable operating state. It can also improve the oil sump stability of the compressor 100 at high speed, reduce oil discharge, and improve the reliability of the compressor 100 during high-frequency operation.

[0061] Specifically, the rotor core 112 is formed by stacking a certain number of thin steel plates.

[0062] Specifically, the balancing component 120 can be integrally formed using materials such as powder metallurgy or steel.

[0063] Specifically, the rotor core 112 has a shaft hole for the shaft to pass through. The balancing component 120 also has a connecting hole, the diameter of which is greater than or equal to the diameter of the shaft hole. When the balancing component 120 is installed on the rotor core 112, the axis of the connecting hole coincides with the axis of the shaft hole, thus allowing the shaft to pass smoothly into the rotor core 112.

[0064] Specifically, the balancing component 120 has multiple mounting holes. By inserting rivets or other connecting parts into the mounting holes, the balancing component 120 can be installed on one side of the rotor core 112 in the axial direction.

[0065] Specifically, some of the mounting holes are located on the counterweight part 134, and some are located on the shielding part 122.

[0066] like Figure 1 , Figure 2 and Figure 3 As shown, in one embodiment of the present invention, optionally, the shielding part 122 includes: a first shielding member 124, the first shielding member 124 being plate-shaped and disposed on the side of the counterweight part 134 away from the rotor core 112 in the axial direction.

[0067] In this embodiment, the shielding part 122 includes a first shielding member 124, which is disposed on the side of the counterweight part 134 that is axially away from the rotor core 112. The first shielding member 124 can block the counterweight part 134 from disturbing the airflow in the axial direction.

[0068] The first shielding member 124 is plate-shaped. This plate-shaped design allows the first shielding member 124 to have a larger shielding area, ensuring effective shielding of the counterweight 134 in the axial direction. At the same time, the plate-shaped design can also reduce the disturbance effect of the first shielding member 124 itself on the airflow.

[0069] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments of the present invention, optionally, the shielding part 122 further includes: a second shielding member 126, the second shielding member 126 being arranged circumferentially along the first shielding member 124, the first shielding member 124 and the second shielding member 126 surrounding the mounting cavity 130.

[0070] In this embodiment, the shielding part 122 further includes a second shielding member 126. In the setting position, the second shielding member 126 is arranged circumferentially along the first shielding member 124. The second shielding member 126 can block the disturbance of the airflow by the counterweight part 134 in the radial direction.

[0071] The first shield 124 and the second shield 126 enclose the mounting cavity 130, and the two cooperate with each other to block the disturbance of the airflow by the counterweight 134 in both the axial and radial directions.

[0072] Specifically, the first shielding member 124 and the second shielding member 126 are integral structures, which facilitates the processing and forming of the shielding part 122 and also improves the structural strength of the first shielding member 124 and the second shielding member 126, so that the first shielding member 124 and the second shielding member 126 can stably block the disturbance of the airflow by the counterweight part 134.

[0073] Specifically, the first shield 124 is cylindrical and matches the shape of the rotor core 112, while the second shield 126 is arc-shaped, which can easily wrap around the counterweight 134 to block the counterweight 134 from disturbing the airflow.

[0074] like Figure 1 , Figure 2 and Figure 3As shown, in one embodiment of the present invention, optionally, an exhaust port 128 is provided on the side of the second shield 126 away from the first shield 124, and the exhaust port 128 passes through the second shield 126 radially along the rotor core 112.

[0075] In this embodiment, during the operation of the rotor assembly 110, the mounting cavity 130 provided by the shielding part 122 forms a negative pressure zone, thereby drawing in the high-pressure gas discharged from the compressor 100. An exhaust port 128 is provided on the side of the second shielding member 126 away from the first shielding member 124, and the exhaust port 128 penetrates the second shielding member 126 radially along the rotor core 112. The exhaust port 128 is connected to the mounting cavity 130, and the gas in the mounting cavity 130 flows to the outside of the shielding part 122 through the exhaust port 128, thereby discharging the high-pressure gas in the negative pressure zone and ultimately improving the ventilation efficiency of the compressor 100.

[0076] Specifically, the exhaust port 128 is a groove opened on the side of the second shield 126 away from the first shield 124, which facilitates processing and shaping.

[0077] like Figure 1 , Figure 2 and Figure 3 As shown, in one embodiment of the present invention, optionally, the area S of the exhaust port 128 on the curved surface where the radial sidewall of the second shield 126 is located, the outer diameter R of the balancing component 120 and the axial height H of the balancing component 120 satisfy the following relationship: 0 < S < πRH.

[0078] In this embodiment, the area of ​​the exhaust port 128 on the curved surface containing the radial sidewall of the second shield 126 is S, the outer diameter of the balancing component 120 is R, and the height of the balancing component 120 on the axial direction is H. The relationship between the area of ​​the exhaust port 128 on the curved surface containing the radial sidewall of the second shield 126, the outer diameter of the balancing component 120, and the height of the balancing component 120 on the axial direction satisfies 0 < S < πRH. By setting the above dimensional relationship, the area of ​​the exhaust port 128 can be made sufficiently large, and the exhaust port 128 is located on the flow path of the high-pressure airflow, thereby improving the smoothness of exhaust.

[0079] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments of the present invention, optionally, there are multiple exhaust ports 128, and the multiple exhaust ports 128 are arranged at circumferential intervals along the second shield 126.

[0080] In this embodiment, there are multiple exhaust ports 128, and multiple exhaust ports 128 can improve exhaust efficiency.

[0081] Regarding the arrangement of multiple exhaust ports 128 on the shielding member, this application arranges the multiple exhaust ports 128 at circumferential intervals along the second shielding member 126. This arrangement allows the airflow to be discharged at different exhaust ports 128 without needing to travel a long distance during exhaust, thereby further improving exhaust efficiency.

[0082] Specifically, the exhaust ports 128 are evenly distributed along the circumference of the second shield 126, and specifically, there are 3 exhaust ports 128.

[0083] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments of the present invention, optionally, the shielding portion 122 is coaxially arranged with the rotor core 112.

[0084] In this embodiment, the shielding part 122 is coaxially arranged with the rotor core 112, and the shielding part 122 and the rotor core 112 have a high degree of overlap in the axial direction. This can both block the counterweight part 134 from disturbing the airflow by the shielding part 122 and reduce the disturbance of the airflow by the shielding part 122 itself.

[0085] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments of the present invention, optionally, the shielding part 122 and the counterweight part 134 are an integral structure.

[0086] In this embodiment, the shielding part 122 and the counterweight part 134 are an integral structure. The integral structure design facilitates the processing of the shielding part 122 and the counterweight part 134, and can improve the structural strength between the shielding part 122 and the counterweight part 134, ensuring that the shielding part 122 reduces the disturbance of the counterweight part 134 to the airflow, and makes the airflow smoother.

[0087] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, in one embodiment of the present invention, a compressor 100 is provided, including a rotor assembly 110 as in any of the above embodiments.

[0088] In this embodiment, the compressor 100 proposed by the present invention, because it includes the rotor assembly 110 as in any of the above embodiments, has all the beneficial effects of the rotor assembly 110 in any of the above embodiments.

[0089] Specifically, when existing compressors operate at high speeds, the agitation of the counterweight or balance block will disperse the discharged gas, or a large amount of gas may be discharged upwards through the stator tangent, which will not only increase the compressor's oil discharge, but also be detrimental to the stability of the lower oil sump.

[0090] The rotor assembly 110 with shielding part 122 and counterweight part 134 proposed in this invention can greatly improve the ventilation efficiency of compressor 100, increase the oil return rate of refrigeration oil, improve the oil sump stability of compressor 100 at high speed, reduce oil discharge, and improve the reliability of compressor 100 during high-frequency operation.

[0091] like Figure 1 , Figure 5 and Figure 6 As shown, in some embodiments of the present invention, the compressor 100 may optionally include: a stator core 140, which is opposite to the rotor core 112, and the stator core 140 is provided with a wire groove 142; an end plate 144, which is disposed on the side of the stator core 140 in the axial direction; and a winding 146, which is disposed in the wire groove 142 and sleeved on the end plate 144.

[0092] In this embodiment, the compressor 100 further includes a stator core 140, an end plate 144, and a winding 146. The stator core 140 is opposite to the rotor core 112. The stator core 140 is provided with a slot 142, and the winding 146 is disposed in the slot 142. The end plate 144 is disposed on the axial side of the stator core 140, and the winding 146 is sleeved on the end plate 144. The stator core 140, the winding 146, and the end plate 144 constitute the stator part of the compressor 100, thereby enabling the compressor 100 to have components that cooperate with the rotor assembly 110, allowing the rotor assembly 110 to rotate.

[0093] like Figure 1 , Figure 5 and Figure 6 As shown, in some embodiments of the present invention, optionally, the axial distance between the side of the end plate 144 away from the stator core 140 and the side of the balancing component 120 away from the rotor core 112 is a first distance; the axial distance between the exhaust port 128 of the balancing component 120 and the side of the balancing component 120 away from the rotor core 112 is a second distance; the second distance is greater than or equal to the first distance.

[0094] In this embodiment, the axial distance between the side of the end plate 144 away from the stator core 140 and the side of the balancing component 120 away from the rotor core 112 is the first distance. Figure 6 In the context of d1), the axial distance between the exhaust port 128 of the balancing component 120 and the side of the balancing component 120 away from the rotor core 112 is the second distance. Figure 6In the case of d2), the second distance is greater than or equal to the first distance, that is, the axial distance between the exhaust port 128 of the balancing component 120 and the side of the balancing component 120 away from the rotor core 112 is greater than the axial distance between the side of the equal end plate 144 away from the stator core 140 and the side of the balancing component 120 away from the rotor core 112.

[0095] By setting the size relationship between different distances as described above, the gas discharged from the exhaust port 128 can be blocked by the end plate 144, the gas changes its flow direction, and flows from the gap between the windings 146 to the other side of the stator in the axial direction, thereby shortening the exhaust path and improving the exhaust efficiency.

[0096] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments of the present invention, optionally, the exhaust port 128 of the balancing component 120 is disposed toward the winding 146.

[0097] In this embodiment, the exhaust port 128 of the balancing component 120 is disposed toward the winding 146, and the exhaust direction of the exhaust port 128 is toward the winding 146, so that the gas discharged from the exhaust port 128 can be blocked by the end plate 144, the gas changes its flow path, and the discharged gas can flow through the gap between the windings 146 to the other side of the stator on the axis, shortening the exhaust path and improving the exhaust efficiency.

[0098] In a third aspect, the present invention provides a refrigeration device comprising a compressor 100 as described in any of the above embodiments.

[0099] The refrigeration device proposed in the third aspect of the present invention, having included the compressor 100 as described in any of the above embodiments, thus possesses all the beneficial effects of the compressor 100 as described in any of the above embodiments.

[0100] Specifically, refrigeration equipment includes air conditioners, refrigerators, freezers, wine cabinets, display cases, etc.

[0101] In the claims, description, and accompanying drawings of this invention, the term "plural" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and simplifying the descriptive process, and are not intended to indicate or imply that the device or element referred to must have the described specific orientation, or be constructed and operated in a specific orientation. Therefore, these descriptions should not be construed as limiting the invention. The terms "connected," "installed," "fixed," etc., should be interpreted broadly. For example, "connected" can be a fixed connection between multiple objects, a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects or an indirect connection between multiple objects through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this invention can be understood based on the specific circumstances described above.

[0102] In the claims, description, and accompanying drawings of this invention, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In the claims, description, and accompanying drawings of this invention, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0103] 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; A balancing component is connected to the rotor core and disposed on one side of the rotor core in the axial direction. The balancing component includes a shielding part and a counterweight part. The shielding part is provided with a mounting cavity, the opening of which faces the rotor core. The counterweight part is offset relative to the axis of the rotor core and disposed within the mounting cavity. The shielding part includes: First shielding element; The second shielding member is arranged circumferentially along the first shielding member; The second shielding member has an exhaust port on the side away from the first shielding member, and the exhaust port passes through the second shielding member radially along the rotor core; The first distance is the axial distance between the end plate located on the side of the stator core away from the stator core and the side of the balancing component away from the rotor core. The axial distance between the exhaust port of the balancing component and the side of the balancing component away from the rotor core is the second distance; The second distance is greater than or equal to the first distance.

2. The rotor assembly according to claim 1, characterized in that, The first shielding member is disposed on the side of the counterweight that is axially away from the rotor core.

3. The rotor assembly according to claim 2, characterized in that, The first shielding member and the second shielding member enclose the mounting cavity.

4. The rotor assembly according to claim 3, characterized in that, The area S of the exhaust port on the curved surface containing the radial sidewall of the second shielding member, the outer diameter R of the balancing member, and the axial height H of the balancing member satisfy the following relationship: 0 < S < πRH.

5. The rotor assembly according to claim 3, characterized in that, The number of exhaust ports is multiple, and the multiple exhaust ports are arranged at intervals along the circumference of the second shielding member.

6. The rotor assembly according to any one of claims 1 to 5, characterized in that, The shielding part is coaxially arranged with the rotor core.

7. The rotor assembly according to any one of claims 1 to 5, characterized in that, The shielding part and the counterweight part are an integral structure.

8. A compressor, characterized in that, Includes the rotor assembly as described in any one of claims 1 to 7.

9. The compressor according to claim 8, characterized in that, Also includes: The stator core is opposite to the rotor core, and the stator core is provided with wire slots; End plate, the end plate being disposed on the side of the stator core in the axial direction; The winding is disposed in the groove and sleeved on the end plate.

10. The compressor according to claim 9, characterized in that, The exhaust port of the balancing component is positioned towards the winding.

11. A refrigeration device, characterized in that, Includes the compressor as described in any one of claims 8 to 10.

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