Rotor assembly, scroll compressor and refrigeration device

Abstract

The utility model provides a kind of rotor assembly, scroll compressor and refrigeration equipment, rotor assembly is used for scroll compressor, rotor assembly includes: rotor;First balance block, located one end in rotor axial direction, and is connected with rotor;First cover body, cover is arranged in the outside of first balance block, and is connected with first balance block, the side of first cover body towards rotor has opening, wherein, along the axial direction of rotor, the end portion of first cover body located at opening is higher than the side of first balance block towards rotor, in reducing rotation wind resistance, reduce airflow disturbance, to improve scroll compressor energy efficiency, improve scroll compressor oil circulation rate while, first cover body and the clearance between rotor can be utilized to discharge the lubricating oil in first cover body.

Description

Technical Field

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

[0002] Currently, in the related technologies of scroll compressors, the upper balance block (main balance block) is relatively large in size, and due to its asymmetry, it will cause greater wind resistance when the crankshaft rotates, resulting in increased power consumption and reduced energy efficiency of the scroll compressor. At the same time, it will also cause deterioration of the upper airflow, leading to an increase in oil circulation rate. Utility Model Content

[0003] The embodiments of this utility model are intended to solve at least one of the technical problems existing in the prior art.

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

[0005] A second aspect of the embodiments of this utility model provides a scroll compressor.

[0006] A third aspect of the embodiments of this utility model provides a refrigeration device.

[0007] In view of the above, according to a first aspect of the present invention, a rotor assembly is provided for use in a scroll compressor. The rotor assembly includes: a rotor; a first counterweight located at one end of the rotor along the axial direction and connected to the rotor; and a first cover covering the outside of the first counterweight and connected to the first counterweight, wherein the first cover has an opening on the side facing the rotor, wherein, along the axial direction of the rotor, the end of the first cover at the opening is higher than the side of the first counterweight facing the rotor.

[0008] The rotor assembly provided in this embodiment includes a rotor, a first balance block, and a first cover. Specifically, the first balance block is located at one end of the rotor along its axial direction and is connected to the rotor. Optionally, the first balance block and the rotor are connected by riveting.

[0009] The first cover is positioned outside the first balance block and is connected to it. By placing the first cover outside the first balance block, rotational air resistance can be effectively reduced, improving the power consumption of the scroll compressor and enhancing its energy efficiency. Furthermore, it can reduce airflow turbulence at the location of the first balance block (the upper part of the scroll compressor), minimizing airflow disturbance and thus improving the oil circulation rate of the scroll compressor.

[0010] Among them, since one side of the first cover facing the rotor has an opening, that is, an opening is provided at the bottom of the first cover, which means that the first cover semi - wraps the outside of the first balance weight. Thus, while reducing the rotational wind resistance and minimizing air flow disturbance, the occupied space of the first cover in the axial direction of the rotor can be reduced. At the same time, the material used for the first cover can also be reduced, which is beneficial to reducing the production cost of the scroll compressor.

[0011] In addition, along the axial direction of the rotor, the end of the first cover at the opening is higher than the side surface of the first balance weight facing the rotor. That is, the height where the opening end of the first cover is located is higher than the height of the bottom surface of the first balance weight, so that a certain gap can be formed between the first cover and the rotor, and thus the lubricating oil in the first cover can be discharged by using this gap to improve the oil return effect.

[0012] In some technical solutions, optionally, along the axial direction of the rotor, the height of the first cover is h1 and the thickness is t, and the height of the first balance weight is h2, where h1 - t < h2.

[0013] In this technical solution, it can be understood that h1 - t is the height of the inner cavity of the first cover, that is, the height of the anti - turbulence cavity in the axial direction of the rotor. h1 - t < h2, that is, when the first cover covers the outside of the first balance weight, there is a height difference between the opening end of the first cover and the bottom surface of the first balance weight. While reducing the rotational wind resistance and minimizing air flow disturbance, a certain gap can be formed between the first cover and the rotor, and thus the lubricating oil in the first cover can be discharged by using this gap to improve the oil return effect, which is beneficial to improving the performance of the scroll compressor.

[0014] Moreover, since the axial height of the inner cavity of the first cover is less than the axial height of the first balance weight, on the premise of ensuring the effect of the first cover on wind resistance and air flow disturbance, the axial dimension of the first cover can be further reduced, which is beneficial to the miniaturization of the scroll compressor.

[0015] In some technical solutions, optionally, h2 - (h1 - t) ≤ 2mm.

[0016] In this technical solution, since h2 - (h1 - t) ≤ 2mm, that is, the height difference between the opening end of the first cover and the bottom surface of the first balance weight in the axial direction of the rotor is less than or equal to 2mm, which also defines the size of the gap formed between the opening end of the first cover and the rotor in the axial direction. It can be understood that if h2 - (h1 - t) is too large, that is, greater than 2mm, that is, the gap formed between the opening end of the first cover and the rotor in the axial direction is too large, it will have a greater impact on the rotational wind resistance.

[0017] By limiting h2-(h1-t) to less than or equal to 2mm, the lubricating oil inside the first cover can be discharged using the gap formed between the first cover and the rotor without significantly affecting the rotational air resistance, thus ensuring the energy efficiency of the scroll compressor.

[0018] In some technical solutions, the first balance block may optionally include a base and an eccentric part, wherein the base is connected to the rotor, and the eccentric part is located on the side of the base away from the rotor; along the axial direction of the rotor, the height of the first cover is h1 and the thickness is t, the height of the eccentric part is h3, and h1-t>h3.

[0019] In this technical solution, the first balance block is defined as including a base and an eccentric part. Specifically, the base is connected to the rotor, and the eccentric part is located on the side of the base away from the rotor.

[0020] It is understandable that h1-t is the height of the inner cavity of the first cover, that is, the height of the anti-turbulence cavity in the rotor axis. h1-t>h3, which means that when the first cover is placed outside the first balance block, the height of the opening end of the first cover is lower than the height of the bottom end of the eccentric part. This ensures that the first cover can effectively reduce rotational wind resistance, improve the power consumption of the scroll compressor, improve the energy efficiency of the scroll compressor, and reduce the degree of airflow turbulence at the location of the first balance block (the upper part of the scroll compressor), thereby reducing airflow disturbance and improving the oil circulation rate of the scroll compressor.

[0021] In some technical solutions, the first cover may optionally include an end plate and a surrounding plate, wherein, along the axial direction of the rotor, the end plate is located on the side of the first balance block away from the rotor, the surrounding plate is connected to the end plate and surrounds the end plate to form an anti-turbulence cavity, at least a portion of the first balance block is located in the anti-turbulence cavity, and the side of the surrounding plate away from the end plate has an opening.

[0022] In this technical solution, the first cover is defined as including an end plate and a surrounding plate. Specifically, along the axial direction of the rotor, the end plate is located on the side of the first balance block opposite to the rotor, that is, the end plate is located on top of the first balance block. The top end of the surrounding plate is connected to the end plate, and the bottom end of the surrounding plate has an opening.

[0023] Because the end plate and the surrounding plate enclose a turbulence-prevention cavity, and at least part of the first balance block is located within the turbulence-prevention cavity, the rotational air resistance can be effectively reduced, the power consumption of the scroll compressor can be improved, and the energy efficiency of the scroll compressor can be enhanced. Moreover, it can also reduce the degree of airflow turbulence at the location of the first balance block (the upper part of the scroll compressor), reduce airflow disturbance, and thus improve the oil circulation rate of the scroll compressor.

[0024] Furthermore, because the bottom of the enclosure has an opening, meaning the first cover is partially wrapped around the outside of the first balance block, it can reduce rotational wind resistance and airflow disturbance while also reducing the space occupied by the first cover in the rotor axial direction. At the same time, it can also reduce the material used for the first cover, which helps to lower the production cost of the scroll compressor.

[0025] In some technical solutions, the first cover may optionally include a connecting hole, which is located in the enclosure and the enclosure is connected to the first balance block through the connecting hole.

[0026] In this technical solution, the first cover also includes a connecting hole. Specifically, the connecting hole is provided on the enclosure plate, and the enclosure plate is connected to the first balance block through the connecting hole, thereby realizing the fixed installation between the first cover and the first balance block.

[0027] In some technical solutions, optionally, the number of connection holes is n, where n≥2.

[0028] In this technical solution, since the number of connecting holes is greater than or equal to two, that is, the number of connecting holes is multiple, the connection strength between the first cover and the first balance block can be improved, which in turn helps to improve the reliability of the scroll compressor.

[0029] In some technical solutions, the end plate and the surrounding plate are optionally an integral structure; and / or the outer wall of the surrounding plate is arranged around it.

[0030] In this technical solution, since the end plate and the surrounding plate are an integral structure, the connection strength between the end plate and the surrounding plate can be improved. At the same time, it avoids gaps at the connection between the end plate and the surrounding plate, which would affect the effectiveness of the first cover in reducing wind resistance and minimizing airflow disturbance. In addition, the integral structure is also conducive to the mass production of the first cover, reducing the processing difficulty of the first cover, and the simple structure of the first cover helps to reduce the production cost of the scroll compressor.

[0031] The surrounding enclosure enhances the first cover's ability to reduce rotational resistance and minimize airflow disturbance, thereby further improving the energy efficiency of the scroll compressor and increasing its oil circulation rate.

[0032] In some technical solutions, optionally, the outer diameter of the first cover is d1 and the outer diameter of the rotor is d2, where d1≤d2.

[0033] In this technical solution, since the outer diameter of the first cover is less than or equal to the outer diameter of the rotor, the rotor can easily pass through the stator during the assembly of the scroll compressor, avoiding interference caused by the excessively large outer diameter of the first cover. This helps to reduce the installation difficulty of the scroll compressor and improve installation efficiency.

[0034] In some technical solutions, the rotor assembly may optionally include a second balance block, a crankshaft, and a second cover, wherein the second balance block and the first balance block are located at opposite ends of the rotor axial direction and are connected to the rotor, the crankshaft passes through the first balance block, the rotor, and the second balance block along the rotor axial direction, and the second cover is provided on the outside of the second balance block.

[0035] In this technical solution, the rotor assembly is further defined as including a second balance block, a crankshaft, and a second cover. Specifically, the first and second balance blocks are located at opposite ends of the rotor axial direction and are connected to the rotor. The crankshaft passes through the first balance block, the rotor, and the second balance block. The second cover is positioned over the outside of the second balance block, which can improve flow field resistance and further enhance the performance of the scroll compressor.

[0036] Because the first cover is positioned outside the first balance block and is connected to it, the rotational resistance can be effectively reduced by placing the first cover outside the first balance block. Furthermore, it can reduce the airflow turbulence at the location of the first balance block (the upper part of the scroll compressor), thereby reducing airflow disturbance, improving the oil circulation rate of the scroll compressor, effectively reducing the frictional power consumption of the scroll compressor, and enhancing its performance.

[0037] According to a second aspect of the present invention, a scroll compressor is provided, comprising a rotor assembly as provided in any of the above technical solutions, and thus possessing all the beneficial technical effects of the rotor assembly, which will not be repeated here.

[0038] Optionally, the scroll compressor also includes a main frame, which includes a body and a bearing portion. Along the axial direction of the rotor, the bearing portion is located between the body and the rotor. The first cover has a through hole at one end facing away from the opening, and at least a portion of the bearing portion extends into the first cover through the through hole.

[0039] The scroll compressor provided in this embodiment includes a rotor assembly and a main frame. Specifically, the main frame includes a body and a bearing portion. Along the axial direction of the rotor, the bearing portion is located between the body and the rotor, and at least a portion of the bearing portion extends into the first cover through a through hole on the first cover, which helps to reduce the axial dimension of the scroll compressor.

[0040] In some technical solutions, optionally, the diameter of the through hole is d3 and the outer diameter of the bearing part is d4, wherein 4mm≤d3-d4≤8mm.

[0041] In this technical solution, since d3-d4 is between 4mm and 8mm, which defines the radial clearance between the hole wall of the through hole and the bearing part, it can be understood that along the radial direction of the rotor, the single-sided clearance between the hole wall of the through hole and the bearing part is between 2mm and 4mm.

[0042] Since the single-sided gap between the hole wall of the through hole and the bearing part is between 2mm and 4mm along the radial direction of the rotor, a sealing gap can be formed between the hole wall of the through hole and the outer wall of the bearing part. This ensures that the first cover can reduce rotational wind resistance and reduce airflow disturbance while avoiding interference between the first cover and the bearing part, which is conducive to further improving the reliability of the scroll compressor.

[0043] According to a third aspect of this utility model, a refrigeration device is provided, including a rotor assembly or scroll compressor as provided in any of the above technical solutions, and thus possesses all the beneficial technical effects of the rotor assembly or scroll compressor, which will not be repeated here.

[0044] Additional aspects and advantages of the present invention will be set forth in the description which follows, in part will be obvious from the description, or may be learned by practice of the present invention. Attached Figure Description

[0045] 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:

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

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

[0048] Figure 3 It shows Figure 2 An enlarged view of the scroll compressor of the illustrated embodiment at point A;

[0049] Figure 4 One of the structural schematic diagrams of a first cover according to an embodiment of the present invention is shown;

[0050] Figure 5 A second schematic diagram of the structure of the first cover according to an embodiment of the present invention is shown.

[0051] in, Figures 1 to 5 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0052] 1. Scroll compressor, 10. Rotor assembly, 11. Rotor, 12. First counterweight, 122. Base, 124. Eccentric part, 13. First cover, 131. Opening, 132. End plate, 133. Enclosure, 134. Anti-turbulence cavity, 135. Connecting hole, 136. Through hole, 14. Second counterweight, 15. Crankshaft, 16. Second cover, 20. Main frame, 22. Body, 24. Bearing part. Detailed Implementation

[0053] 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.

[0054] 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.

[0055] The following reference Figures 1 to 5 This invention describes a rotor assembly 10, a scroll compressor 1, and a refrigeration device provided according to some embodiments of the present invention.

[0056] In one embodiment according to this application, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a rotor assembly 10 is proposed for use in a scroll compressor 1. The rotor assembly 10 includes: a rotor 11; a first counterweight 12 located at one end of the rotor 11 along the axial direction and connected to the rotor 11; and a first cover 13 covering the outside of the first counterweight 12 and connected to the first counterweight 12. The first cover 13 has an opening 131 on the side facing the rotor 11, wherein, along the axial direction of the rotor 11, the end of the first cover 13 located at the opening 131 is higher than the side of the first counterweight 12 facing the rotor 11.

[0057] The rotor assembly 10 provided in this embodiment of the present invention includes a rotor 11, a first balance block 12, and a first cover 13. Specifically, the first balance block 12 is located at one end of the rotor 11 in the axial direction, and the first balance block 12 is connected to the rotor 11. Optionally, the first balance block 12 and the rotor 11 are connected by riveting.

[0058] The first cover 13 is positioned over the outside of the first balance block 12 and is connected to the first balance block 12. By placing the first cover 13 outside the first balance block 12, the rotational air resistance can be effectively reduced, the power consumption of the scroll compressor 1 can be improved, and the energy efficiency of the scroll compressor 1 can be enhanced. Moreover, it can also reduce the degree of airflow turbulence at the location of the first balance block 12 (the upper part of the scroll compressor 1), reduce airflow disturbance, and thus improve the oil circulation rate of the scroll compressor 1.

[0059] Among them, since one side of the first cover 13 facing the rotor 11 has an opening 131, that is to say, an opening 131 is provided at the bottom of the first cover 13, which means that the first cover 13 semi-wraps the outside of the first balance weight 12, so that while reducing the rotational wind resistance and minimizing the air flow disturbance, the occupied space of the first cover 13 in the axial direction of the rotor 11 can be reduced. At the same time, the material used for the first cover 13 can also be reduced, which is beneficial to reducing the production cost of the scroll compressor 1.

[0060] In addition, along the axial direction of the rotor 11, the end of the first cover 13 at the opening 131 is higher than one side surface of the first balance weight 12 facing the rotor 11. That is to say, the height of the opening end of the first cover 13 is higher than the height of the bottom surface of the first balance weight 12, so that a certain gap can be formed between the first cover 13 and the rotor 11, and thus the lubricating oil in the first cover 13 can be discharged by using this gap, improving the oil return effect.

[0061] Optionally, the first balance weight 12 is a main balance weight.

[0062] As Figure 3 and Figure 4 shown, in some embodiments, optionally, along the axial direction of the rotor 11, the height of the first cover 13 is h1 and the thickness is t, and the height of the first balance weight 12 is h2, where h1 - t < h2.

[0063] In this embodiment, it can be understood that h1 - t is the height of the inner cavity of the first cover 13, that is, the height of the anti-turbulence cavity 134 in the axial direction of the rotor 11. h1 - t < h2, that is to say, when the first cover 13 covers the outside of the first balance weight 12, there is a height difference between the opening end of the first cover 13 and the bottom surface of the first balance weight 12. While reducing the rotational wind resistance and minimizing the air flow disturbance, a certain gap can be formed between the first cover 13 and the rotor 11, and thus the lubricating oil in the first cover 13 can be discharged by using this gap, improving the oil return effect, which is beneficial to improving the performance of the scroll compressor 1.

[0064] Moreover, since the axial height of the inner cavity of the first cover 13 is less than the axial height of the first balance weight 12, on the premise of ensuring the effect of the first cover 13 on the wind resistance and air flow disturbance, the axial dimension of the first cover 13 can be further reduced, which is beneficial to the miniaturization of the scroll compressor 1.

[0065] In some embodiments, optionally, h2 - (h1 - t) ≤ 2 mm.

[0066] In this embodiment, since h2-(h1-t)≤2mm, that is, the height difference between the opening end of the first cover 13 and the bottom surface of the first balance block 12 in the axial direction of the rotor 11 is less than or equal to 2mm, the size of the axial gap formed between the opening end of the first cover 13 and the rotor 11 is limited. It can be understood that if h2-(h1-t) is too large, that is, greater than 2mm, that is, the axial gap formed between the opening end of the first cover 13 and the rotor 11 is too large, it will have a significant impact on the rotational wind resistance.

[0067] By limiting h2-(h1-t) to less than or equal to 2mm, the lubricating oil inside the first cover 13 can be discharged using the gap formed between the first cover 13 and the rotor 11 without significantly affecting the rotational wind resistance, thus ensuring the energy efficiency of the scroll compressor 1.

[0068] Optionally, h2-(h1-t) can be any one of 0.5mm, 1mm, 1.5mm and 2mm.

[0069] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, optionally, the first balancing block 12 includes a base 122 and an eccentric portion 124, wherein the base 122 is connected to the rotor 11, and the eccentric portion 124 is disposed on the side of the base 122 away from the rotor 11; along the axial direction of the rotor 11, the height of the first cover 13 is h1 and the thickness is t, the height of the eccentric portion 124 is h3, and h1-t>h3.

[0070] In this embodiment, the first balance block 12 is defined to include a base 122 and an eccentric portion 124. Specifically, the base 122 is connected to the rotor 11, and the eccentric portion 124 is disposed on the side of the base 122 away from the rotor 11.

[0071] It is understandable that h1-t is the height of the inner cavity of the first cover 13, that is, the height of the anti-turbulence cavity 134 in the axial direction of the rotor 11. h1-t>h3, that is, when the first cover 13 is placed on the outside of the first balance block 12, the height of the opening end of the first cover 13 is lower than the height of the bottom end of the eccentric part 124, ensuring that the first cover 13 can effectively reduce the rotational wind resistance, improve the power consumption of the scroll compressor 1, improve the energy efficiency of the scroll compressor 1, and reduce the degree of airflow turbulence at the location of the first balance block 12 (the upper part of the scroll compressor 1), reduce airflow disturbance, thereby improving the oil circulation rate of the scroll compressor 1.

[0072] like Figure 3 , Figure 4 and Figure 5As shown, in some embodiments, optionally, the first cover 13 includes an end plate 132 and a surrounding plate 133, wherein, along the axial direction of the rotor 11, the end plate 132 is located on the side of the first balance block 12 away from the rotor 11, the surrounding plate 133 is connected to the end plate 132 and surrounds the end plate 132 to form an anti-turbulence cavity 134, at least a portion of the first balance block 12 is located in the anti-turbulence cavity 134, and the side of the surrounding plate 133 away from the end plate 132 has an opening 131.

[0073] In this embodiment, the first cover 13 is defined as including an end plate 132 and a surrounding plate 133. Specifically, along the axial direction of the rotor 11, the end plate 132 is located on the side of the first balance block 12 opposite to the rotor 11, that is, the end plate 132 is located on the top of the first balance block 12. The top end of the surrounding plate 133 is connected to the end plate 132, and the bottom end of the surrounding plate 133 has an opening 131.

[0074] Since the end plate 132 and the surrounding plate 133 enclose and form an anti-turbulence cavity 134, and at least part of the first balance block 12 is located within the anti-turbulence cavity 134, the rotational wind resistance can be effectively reduced, the power consumption of the scroll compressor 1 can be improved, and the energy efficiency of the scroll compressor 1 can be enhanced. Moreover, it can also reduce the degree of airflow turbulence at the location of the first balance block 12 (the upper part of the scroll compressor 1), reduce airflow disturbance, and thus improve the oil circulation rate of the scroll compressor 1.

[0075] Furthermore, since the bottom end of the enclosure 133 has an opening 131, meaning that the first cover 13 is partially wrapped around the outside of the first balance block 12, it can reduce rotational wind resistance and airflow disturbance while reducing the space occupied by the first cover 13 in the axial direction of the rotor 11. At the same time, it can also reduce the material used for the first cover 13, which is beneficial to reducing the production cost of the scroll compressor 1.

[0076] like Figure 5 As shown, in some embodiments, optionally, the first cover 13 further includes a connection hole 135, which is provided on the surrounding plate 133, and the surrounding plate 133 is connected to the first balance block 12 through the connection hole 135.

[0077] In this embodiment, the first cover 13 is further defined as including a connecting hole 135. Specifically, the connecting hole 135 is provided on the surrounding plate 133, and the surrounding plate 133 is connected to the first balance block 12 through the connecting hole 135, thereby realizing the fixed installation between the first cover 13 and the first balance block 12.

[0078] Optionally, the connecting hole 135 is a welding hole, that is, the surrounding plate 133 is connected to the first balance block 12 by welding.

[0079] Optionally, the connecting hole 135 is a threaded hole.

[0080] like Figure 5As shown, in some embodiments, optionally, the number of connection holes 135 is n, where n≥2.

[0081] In this embodiment, since the number of connecting holes 135 is greater than or equal to two, that is, the number of connecting holes 135 is multiple, the connection strength between the first cover 13 and the first balance block 12 can be improved, which in turn helps to improve the reliability of the scroll compressor 1.

[0082] In some embodiments, the end plate 132 and the surrounding plate 133 are optionally integral structures; and / or the outer wall of the surrounding plate 133 is arranged around it.

[0083] In this embodiment, since the end plate 132 and the surrounding plate 133 are an integral structure, the connection strength between the end plate 132 and the surrounding plate 133 can be improved. At the same time, it avoids gaps at the connection between the end plate 132 and the surrounding plate 133, which could affect the effect of the first cover 13 in reducing wind resistance and minimizing airflow disturbance. Furthermore, the integral structure facilitates mass production of the first cover 13, reduces the processing difficulty, and the simple structure of the first cover 13 helps reduce the production cost of the scroll compressor 1.

[0084] The outer wall of the enclosure 133 is arranged around the perimeter, which can enhance the effect of the first cover 13 in reducing rotational wind resistance and reducing airflow disturbance, thereby helping to further improve the energy efficiency of the scroll compressor 1 and improve the oil circulation rate of the scroll compressor 1.

[0085] Optionally, the first cover 13 is a stamped part.

[0086] like Figure 2 and Figure 4 As shown, in some embodiments, optionally, the outer diameter of the first cover 13 is d1 and the outer diameter of the rotor 11 is d2, wherein d1≤d2.

[0087] In this embodiment, since the outer diameter of the first cover 13 is less than or equal to the outer diameter of the rotor 11, the rotor 11 can easily pass through the stator during the assembly of the scroll compressor 1, avoiding interference caused by the excessively large outer diameter of the first cover 13. This helps to reduce the installation difficulty of the scroll compressor 1 and improve the installation efficiency.

[0088] like Figure 1 and Figure 2 As shown, in some embodiments, the rotor assembly 10 may optionally include a second balance block 14, a crankshaft 15, and a second cover 16, wherein the second balance block 14 and the first balance block 12 are located at opposite ends of the rotor 11 along the axial direction and are connected to the rotor 11, the crankshaft 15 passes through the first balance block 12, the rotor 11, and the second balance block 14 along the axial direction of the rotor 11, and the second cover 16 covers the outside of the second balance block 14.

[0089] In this embodiment, the rotor assembly 10 further includes a second balance block 14, a crankshaft 15, and a second cover 16. Specifically, the first balance block 12 and the second balance block 14 are located at opposite ends of the rotor 11 along its axial direction, and are connected to the rotor 11. The crankshaft 15 passes through the first balance block 12, the rotor 11, and the second balance block 14. The second cover 16 covers the outside of the second balance block 14, which can improve flow field resistance and further enhance the performance of the scroll compressor 1.

[0090] Since the first cover 13 is positioned outside the first balance block 12 and is connected to the first balance block 12, the rotational wind resistance can be effectively reduced by setting the first cover 13 outside the first balance block 12. In addition, the airflow turbulence at the location of the first balance block 12 (the upper part of the scroll compressor 1) can also be reduced, thereby reducing airflow disturbance, improving the oil circulation rate of the scroll compressor 1, effectively reducing the frictional power consumption of the scroll compressor 1, and improving the performance of the scroll compressor 1.

[0091] Optionally, the second balancing block 14 is a secondary balancing block.

[0092] According to a second aspect of the present invention, a scroll compressor 1 is provided, comprising a rotor assembly 10 as provided in any of the above embodiments, and thus possessing all the beneficial technical effects of the rotor assembly 10, which will not be repeated here.

[0093] like Figure 1 and Figure 2 As shown, optionally, the scroll compressor 1 also includes a main frame 20, which includes a body 22 and a bearing portion 24. Along the axial direction of the rotor 11, the bearing portion 24 is located between the body 22 and the rotor 11. The first cover 13 has a through hole 136 at one end away from the opening 131, and at least a portion of the bearing portion 24 extends into the first cover 13 through the through hole 136.

[0094] The scroll compressor 1 provided in this embodiment of the present invention includes a rotor assembly 10 and a main frame 20. Specifically, the main frame 20 includes a body 22 and a bearing portion 24. Along the axial direction of the rotor 11, the bearing portion 24 is located between the body 22 and the rotor 11, and at least a portion of the bearing portion 24 extends into the first cover 13 through a through hole 136 on the first cover 13, which is beneficial to reduce the axial dimension of the scroll compressor 1.

[0095] Optionally, the scroll compressor 1 further includes a moving scroll, a stationary scroll, and a stator. The stationary scroll and the moving scroll form a compression chamber. The stationary scroll is provided with an exhaust port, which is connected to the compression chamber. The crankshaft 15 is connected to the moving scroll. The stator is located on the radial outer side of the rotor 11. Specifically, when the scroll compressor 1 is running, the rotor 11 drives the moving scroll to rotate relative to the stationary scroll through the crankshaft 15 to compress the gas in the compression chamber. When the gas pressure in the compression chamber reaches the exhaust pressure, the compressed high-temperature and high-pressure gas is discharged from the exhaust port.

[0096] like Figure 2 and Figure 4 As shown, in some embodiments, optionally, the diameter of the through hole 136 is d3, and the outer diameter of the bearing portion 24 is d4, wherein 4mm≤d3-d4≤8mm.

[0097] In this embodiment, since d3-d4 is between 4mm and 8mm, which defines the radial clearance between the hole wall of the through hole 136 and the bearing portion 24, it can be understood that the single-sided clearance between the hole wall of the through hole 136 and the bearing portion 24 along the radial direction of the rotor 11 is between 2mm and 4mm.

[0098] Since the single-sided gap between the hole wall of the through hole 136 and the bearing part 24 along the radial direction of the rotor 11 is between 2mm and 4mm, a sealing gap can be formed between the hole wall of the through hole 136 and the outer wall of the bearing part 24. This ensures that the first cover 13 can reduce rotational wind resistance and reduce airflow disturbance while avoiding interference between the first cover 13 and the bearing part 24, which is beneficial to further improve the reliability of the scroll compressor 1.

[0099] Optionally, d3-d4 can be any one of 4mm, 5mm, 6mm, 7mm and 8mm.

[0100] According to a third aspect of the present invention, a refrigeration device is provided, including a rotor assembly 10 or a scroll compressor 1 as provided in any of the above embodiments, and thus possessing all the beneficial technical effects of the rotor assembly 10 or the scroll compressor 1, which will not be repeated here.

[0101] Alternatively, the refrigeration equipment may include air conditioners, refrigerators, or freezers.

[0102] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it 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.

[0103] 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.

[0104] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements 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, The rotor assembly is used in a scroll compressor, and the rotor assembly includes: Rotor; The first balance block is located at one end of the rotor along the axial direction and is connected to the rotor; A first cover is fitted over and connected to the outside of the first balance block, and the first cover has an opening on the side facing the rotor. Along the axial direction of the rotor, the end of the first cover located at the opening is higher than the side of the first counterweight facing the rotor.

2. The rotor assembly according to claim 1, characterized in that, Along the axial direction of the rotor, the height of the first cover is h1 and the thickness is t, and the height of the first balance block is h2, wherein h1-th3.

3. The rotor assembly according to claim 2, characterized in that, The first cover includes:

4. The rotor assembly according to claim 1, characterized in that, An end plate, along the axial direction of the rotor, is located on the side of the first balance block opposite to the rotor; A surrounding plate is connected to the end plate and forms an anti-turbulence cavity with the end plate. At least a portion of the first balance block is located in the anti-turbulence cavity, and the opening is located on the side of the surrounding plate away from the end plate. The first cover also includes: A connecting hole is provided in the enclosure plate, and the enclosure plate is connected to the first balance block through the connecting hole.

5. The rotor assembly according to any one of claims 1 to 4, characterized in that, The number of connection holes is n, where n≥2. The end plate and the surrounding plate are an integral structure; and / or The outer wall of the enclosure is surrounded by a ring.

6. The rotor assembly according to claim 5, characterized in that, The outer diameter of the first cover is d1, and the outer diameter of the rotor is d2, wherein d1≤d2. Also includes:

7. The rotor assembly according to claim 6, characterized in that, The second balance block is located at both ends of the rotor axis, respectively, and is connected to the rotor; 8. The rotor assembly according to claim 5, characterized in that, A crankshaft, along the axial direction of the rotor, passes through the first balance block, the rotor, and the second balance block respectively; The second cover is placed on the outside of the second balancing block.

9. The rotor assembly according to any one of claims 1 to 4, characterized in that, include:

10. The rotor assembly according to any one of claims 1 to 4, characterized in that, The rotor assembly as described in any one of claims 1 to 10; A main frame, comprising a body and a bearing portion, is located between the body and the rotor along the axial direction of the rotor; The first cover has a through hole at the end opposite to the opening, and at least a portion of the bearing portion extends into the first cover through the through hole. The diameter of the through hole is d3, and the outer diameter of the bearing part is d4, wherein 4mm≤d3-d4≤8mm.

11. A scroll compressor, characterized in that, include: The rotor assembly as described in any one of claims 1 to 10; or The scroll compressor as described in claim 11 or 12.

12. The scroll compressor according to claim 11, characterized in that, ​ 13. A refrigeration device, characterized in that, ​ ​ ​ ​

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