Compression assembly, refrigeration equipment and vehicle

Abstract

The utility model provides a compression subassembly, refrigeration equipment and vehicle, wherein the compression subassembly includes: frame, bearing and crankshaft, be equipped with the recess on the frame, bearing and frame are connected, the recess is distributed along the circumference of bearing, crankshaft passes through the bearing. Wherein the radial thickness of the bearing is H1, the width of the groove is H2 in the radial direction of the bearing, the radial distance between the groove and the bearing is H3, and H1, H2 and H3 meet the condition that H2 / (H1 + H3) is larger than 0.5 and smaller than 0.6. The groove is formed in the rack, so that the effective contact area between the crankshaft and the bearing is increased, the local oil film thickness in the operation process of the compression assembly is improved, the contact surface pressure between the crankshaft and the bearing is reduced, and the eccentric wear problem of the bearing can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, and in particular to a compression component, a refrigeration device and a vehicle. Background Art

[0002] The rotating mechanism of the scroll compressor mainly includes crankshaft, frame, bearings and other components. The frame supports the rotation of the crankshaft through the bearings, thereby driving the scroll to rotate for compression.

[0003] When the compressor is running, the crankshaft will produce large elastic deformation, which will increase the wear of the bearings and make the bearings more susceptible to damage. Utility Model Content

[0004] The utility model aims to solve the technical problem in the prior art or related art that a crankshaft will generate relatively large elastic deformation when a compressor is running, thereby increasing the wear amount of a bearing.

[0005] In view of this, in the first aspect, the utility model proposes a compression assembly, including: a frame, on which a groove is provided; a bearing, connected to the frame, and the groove is distributed along the circumference of the bearing; and a crankshaft, which passes through the bearing; wherein the radial thickness of the bearing is H1, the width of the groove along the radial direction of the bearing is H2, the radial spacing between the groove and the bearing is H3, and H1, H2 and H3 satisfy that 0.5<H2 / (H1+H3)<0.6.

[0006] The compression assembly provided by the utility model has a crankshaft passing through a bearing so that the crankshaft can rotate relative to a frame, and the rotating crankshaft is used to drive the movable scroll to rotate. When the crankshaft rotates, the crankshaft will be deformed, and when the contact area between the crankshaft and the bearing changes, the wear of the bearing will increase. Grooves are provided on the frame, and the grooves are distributed along the circumference of the bearing, which makes it easier for part of the frame near the bearing to deform when subjected to force, reduces the local stiffness of the frame, and increases the deformation capacity. When the crankshaft is deformed, the bearing will be subjected to force, and the bearing will apply the force to the frame. Since the frame is more prone to deformation, the position of the bearing will change slightly. Compared with the situation where the frame is not easy to deform and the bearing position is not easy to change, the bearing position in this solution can be changed due to the deformation of the frame. The frame and the bearing can resist the large elastic deformation of the crankshaft during the operation of the compression assembly, increase the effective contact area between the crankshaft and the bearing, improve the local oil film thickness during the operation of the compression assembly, reduce the contact surface pressure between the crankshaft and the bearing, effectively improve the eccentric wear problem of the bearing, reduce the damage rate of the compression assembly, and help improve the stability of the compression assembly during operation.

[0007] The spacing between the groove and the bearing will affect the effect of resisting the elastic deformation of the compression assembly. When considering the spacing between the groove and the bearing, it is also necessary to consider that the spacing between the groove and the bearing needs to be associated with the size of the compression assembly. Therefore, in this embodiment, the width of the groove, the thickness of the bearing and the spacing between the groove and the bearing are associated. When H1, H2 and H3 meet 0.5<H2 / (H1+H3)<0.6, part of the frame near the bearing can effectively resist the deformation of the crankshaft when under force, thereby effectively improving the eccentric wear problem between the crankshaft and the bearing.

[0008] In addition, the compression assembly in the above technical solution provided by the utility model may also have the following additional technical features:

[0009] In some technical solutions, optionally, H1 and H2 satisfy 0.8<H2 / H1<0.9.

[0010] The radial width of the groove will affect the effect of resisting the elastic deformation of the compression component. The larger the width of the groove, the easier it is for the frame to deform. However, if the width of the groove is too large, the structural strength of the frame is low, which can easily cause damage to the frame. Therefore, the width range of the groove needs to be limited.

[0011] The width range of the groove should be related to the size of the compression assembly. When the size of the compression assembly is larger, the size of the bearing will generally increase. Therefore, in this embodiment, the radial width of the groove is related to the radial thickness of the bearing. When H1 and H2 meet 0.8<H2 / H1<0.9, the part of the frame near the bearing can effectively resist the deformation of the crankshaft when subjected to force, thereby effectively improving the eccentric wear problem between the crankshaft and the bearing.

[0012] In some technical solutions, optionally, along the axial direction of the bearing, the length of the groove is L2, and H2 and L2 satisfy 0.6<H2 / L2<0.65.

[0013] The length and width of the groove will both affect the effect of resisting the elastic deformation of the compression component. When the length of the groove is too large and the width of the groove is too small, the effect of resisting the elastic deformation of the compression component is poor. When the length of the groove is too small and the width of the groove is too large, the effect of resisting the elastic deformation of the compression component is also poor. Therefore, it is necessary to design the length of the groove and the width of the groove in a related manner. When H2 and L2 meet 0.6<H2 / L2<0.65, the length of the groove and the width of the groove are related, and the part of the frame near the bearing can effectively resist the deformation of the crankshaft when subjected to force, thereby effectively improving the eccentric wear problem between the crankshaft and the bearing.

[0014] In some technical solutions, optionally, the axial length of the bearing is L1, and L1 and L2 satisfy 0.12<L2 / L1<0.17.

[0015] The axial length of the groove will affect the effect of resisting the elastic deformation of the compression component. The larger the axial length of the groove, the easier it is for the frame to deform. However, when the axial length of the groove is too large, the structural strength of the frame is low, which can easily cause damage to the frame. Therefore, the axial length range of the groove needs to be limited.

[0016] The range of the axial length of the groove should be related to the size of the compression assembly. When the size of the compression assembly is larger, the axial length of the bearing will generally increase. Therefore, in this embodiment, the axial length of the groove is related to the axial length of the bearing. When L1 and L2 satisfy 0.12<L2 / L1<0.17, the part of the frame near the bearing can effectively resist the deformation of the crankshaft when subjected to force, thereby effectively improving the eccentric wear problem between the crankshaft and the bearing.

[0017] In some technical solutions, optionally, the inner diameter of the bearing is D1, and the maximum width of the frame along the radial direction of the bearing is D2, and D1 and D2 satisfy 0.25<D1 / D2<0.3.

[0018] In order to reduce the space occupied by the compression assembly, the compression assembly develops towards a "small shell diameter". When the maximum width of the frame is reduced, the size of the bearing should also be reduced. The size of the bearing will affect the supporting effect of the crankshaft, so the size of the bearing cannot be changed arbitrarily. In this embodiment, the maximum width of the frame and the inner diameter of the bearing are associated. When D1 and D2 meet 0.25<D1 / D2<0.3, the compression assembly has the characteristics of a "small shell diameter". Moreover, within the above range, the bearing can effectively support the crankshaft to ensure the operating stability of the compression assembly.

[0019] In some technical schemes, optionally, the crankshaft extends out of a first side of a frame, an oil groove is provided on the second side of the frame, the first side and the second side of the frame are two opposite sides of the frame, a bearing chamber is provided on the frame, the bearing is located in the bearing chamber, and the groove and the bearing chamber are both connected to the oil groove; wherein, taking the first side of the frame as a reference, the end of the bearing is lower than the bottom wall of the oil groove.

[0020] An oil groove is provided on the second side of the frame, and the bearing chamber is connected to the oil groove, so that the oil in the oil groove can flow into the bearing chamber, so that the oil can lubricate the bearing and the crankshaft, reducing the wear of the crankshaft and the bearing. The crankshaft extends out of the frame in a direction away from the second side of the frame. The second side of the frame is usually provided with a movable scroll and other components. With the first side of the frame as a reference, the end of the bearing is lower than the bottom wall of the oil groove, that is, the bearing does not extend into the oil groove. Since other components of the compression assembly may be installed in the oil groove, in order to avoid interference between the bearing and other components in the oil groove, the bearing is not extended into the oil groove, thereby ensuring the operating stability of each component in the compression assembly.

[0021] Due to the influence of processing accuracy, it is not easy to make the end of the bearing flush with the bottom wall of the oil groove. In order to prevent the bearing from extending into the oil groove due to the influence of processing accuracy, a height difference is set between the end of the bearing and the bottom wall of the oil groove in this embodiment to ensure that the bearing will not interfere with other components in the oil groove.

[0022] In some technical solutions, optionally, the frame includes: a main frame, a groove and an oil groove are arranged on the main frame, an extended frame is connected to the main frame, along the axial direction of the crankshaft, the extended frame is located on one side of the main frame, a part of the bearing is connected to the main frame, and the other part of the bearing is connected to the extended frame; wherein the groove is arranged on the bottom wall of the oil groove; the bearing chamber is adjacent to the first side of the frame relative to the oil groove.

[0023] The oil tank will occupy space on the frame. In order to make the bearing avoid the oil tank, a part of the frame is extended away from the oil tank to form an extended frame, which is used to install the bearing. By extending a part of the frame to form an extended frame instead of thickening the entire frame, this method can reduce the space occupied by the frame and reduce the weight of the frame.

[0024] Part of the bearing is installed on the main frame, and the other part of the bearing is installed on the extension frame, that is, the bearing chamber extends from the extension frame to the main frame. The structural strength of the main frame is relatively high. Through the above method, it can be ensured that the bearing can effectively support the crankshaft.

[0025] In some technical solutions, optionally, the groove includes an annular groove, and the annular groove extends along the circumference of the bearing; or the number of the grooves is multiple, and the multiple grooves are distributed at intervals along the circumference of the bearing.

[0026] The groove may be an annular structure, and the annular groove extends along the circumference of the bearing. When the bearing is subjected to the force of the crankshaft deformation, part of the frame around the bearing can be deformed accordingly.

[0027] Alternatively, a plurality of grooves may be provided around the bearing, with two adjacent grooves spaced apart from each other, which can also cause a portion of the frame around the bearing to deform due to the force of the crankshaft.

[0028] In a second aspect, the utility model provides a refrigeration device, comprising: a compression assembly as in the first aspect.

[0029] In a third aspect, the utility model provides a vehicle, comprising: a compression assembly as in the first aspect, or a refrigeration device as in the second aspect.

[0030] Additional aspects and advantages of the present invention will become apparent in the following description or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0032] Figure 1 One of the structural schematic diagrams of the compression assembly in the embodiment of the utility model is shown;

[0033] Figure 2 The second structural schematic diagram of the compression assembly in the embodiment of the utility model is shown;

[0034] Figure 3 Shows Figure 2 Enlarged view of point A in the middle.

[0035] Reference numerals:

[0036] 100 frame, 110 groove, 120 oil groove, 130 bearing chamber, 140 main frame, 150 extension frame, 200 bearing, 300 crankshaft. DETAILED DESCRIPTION

[0037] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0038] In the following description, many specific details are set forth to facilitate 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 protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0039] Refer to the following Figures 1 to 3 The present invention describes a compression assembly, a refrigeration device and a vehicle provided according to some embodiments of the present invention.

[0040] Combination Figure 1 and Figure 2As shown, in an embodiment of the present utility model, a compression assembly is proposed, including: a frame 100, a bearing 200 and a crankshaft 300, the frame 100 is provided with a groove 110, the bearing 200 is connected to the frame 100, and the groove 110 is along the circumference of the bearing 200 ( Figure 1 The crankshaft 300 is arranged in the bearing 200. The radial direction of the bearing 200 is ( Figure 2 The arrow at C in the middle points to a thickness of H1. In the radial direction of the bearing 200, the width of the groove 110 is H2. The radial spacing between the groove 110 and the bearing 200 is H3. H1, H2 and H3 satisfy 0.5<H2 / (H1+H3)<0.6.

[0041] In the compression assembly provided in this embodiment, the crankshaft 300 is passed through the bearing 200, so that the crankshaft 300 can rotate relative to the frame 100, and the rotating crankshaft 300 is used to drive the movable scroll to rotate. When the crankshaft 300 rotates, the crankshaft 300 will be deformed. When the contact area between the crankshaft 300 and the bearing 200 changes, the wear of the bearing 200 will increase. A groove 110 is provided on the frame 100, and the groove 110 is distributed along the circumference of the bearing 200, which makes the part of the frame 100 near the bearing 200 more likely to deform when subjected to force, the local stiffness of the frame 100 is reduced, and the deformation capacity is increased. When the crankshaft 300 is deformed, the bearing 200 will be subjected to force, and the bearing 200 will apply the force to the frame 100. Since the frame 100 is more likely to deform, the position of the bearing 200 will change slightly. Compared with the situation where the frame 100 is not easy to deform and the position of the bearing 200 is not easy to change, the position of the bearing 200 in this solution can be changed due to the deformation of the frame 100. The frame 100 and the bearing 200 can resist the large elastic deformation of the crankshaft 300 during the operation of the compression assembly, increase the effective contact area between the crankshaft 300 and the bearing 200, improve the local oil film thickness during the operation of the compression assembly, and reduce the contact surface pressure between the crankshaft 300 and the bearing 200. It can effectively improve the eccentric wear problem of the bearing 200, reduce the damage rate of the compression assembly, and help improve the stability of the compression assembly during operation.

[0042] The distance between the groove 110 and the bearing 200 will affect the effect of resisting the elastic deformation of the compression assembly. When considering the distance between the groove 110 and the bearing 200, it is also necessary to consider that the distance between the groove 110 and the bearing 200 needs to be associated with the size of the compression assembly. Therefore, in this embodiment, the width of the groove 110, the thickness of the bearing 200 and the distance between the groove 110 and the bearing 200 are associated. When H1, H2 and H3 meet 0.5<H2 / (H1+H3)<0.6, the part of the frame 100 near the bearing 200 can effectively resist the deformation of the crankshaft 300 when subjected to force, thereby effectively improving the eccentric wear problem between the crankshaft 300 and the bearing 200.

[0043] Combination Figure 1 and Figure 2 As shown, in some embodiments, optionally, H1 and H2 satisfy, 0.8<H2 / H1<0.9.

[0044] The radial width of the groove 110 will affect the effect of resisting the elastic deformation of the compression component. The larger the width of the groove 110, the easier it is for the frame 100 to deform. However, when the width of the groove 110 is too large, the structural strength of the frame 100 is low, which can easily cause damage to the frame 100. Therefore, the width range of the groove 110 needs to be limited.

[0045] The width range of the groove 110 should be related to the size of the compression assembly. When the size of the compression assembly is larger, the size of the bearing 200 will generally increase. Therefore, in this embodiment, the radial width of the groove 110 is related to the radial thickness of the bearing 200. When H1 and H2 meet 0.8<H2 / H1<0.9, the part of the frame 100 near the bearing 200 can effectively resist the deformation of the crankshaft 300 when subjected to force, thereby effectively improving the eccentric wear problem between the crankshaft 300 and the bearing 200.

[0046] Combination Figure 1 and Figure 2 As shown, in some embodiments, optionally, along the axial direction ( Figure 2 The arrow at D in the figure points to the direction), the length of the groove 110 is L2, and H2 and L2 satisfy 0.6<H2 / L2<0.65.

[0047] The length of the groove 110 and the width of the groove 110 will both affect the effect of resisting the elastic deformation of the compression component. When the length of the groove 110 is too large and the width of the groove 110 is too small, the effect of resisting the elastic deformation of the compression component is poor. When the length of the groove 110 is too small and the width of the groove 110 is too large, the effect of resisting the elastic deformation of the compression component is also poor. Therefore, it is necessary to design the length of the groove 110 and the width of the groove 110 in a related manner. When H2 and L2 meet 0.6<H2 / L2<0.65, the length of the groove 110 and the width of the groove 110 are related, and the part of the frame 100 near the bearing 200 can effectively resist the deformation of the crankshaft 300 when subjected to force, thereby effectively improving the eccentric wear problem between the crankshaft 300 and the bearing 200.

[0048] Combination Figure 1 and Figure 2 As shown, in some embodiments, optionally, the axial length of the bearing 200 is L1, and L1 and L2 satisfy 0.12<L2 / L1<0.17.

[0049] The axial length of the groove 110 will affect the effect of resisting the elastic deformation of the compression component. The larger the axial length of the groove 110, the easier it is for the frame 100 to deform. However, when the axial length of the groove 110 is too large, the structural strength of the frame 100 is low, which can easily cause damage to the frame 100. Therefore, the axial length range of the groove 110 needs to be limited.

[0050] The range of the axial length of the groove 110 should be related to the size of the compression assembly. When the size of the compression assembly is larger, the axial length of the bearing 200 will generally increase. Therefore, in this embodiment, the axial length of the groove 110 is related to the axial length of the bearing 200. When L1 and L2 satisfy 0.12<L2 / L1<0.17, the part of the frame 100 near the bearing 200 can effectively resist the deformation of the crankshaft 300 when subjected to force, thereby effectively improving the eccentric wear problem between the crankshaft 300 and the bearing 200.

[0051] like Figure 2 As shown, in some embodiments, optionally, the inner diameter of the bearing 200 is D1, and along the radial direction of the bearing 200, the maximum width of the frame 100 is D2, and D1 and D2 satisfy 0.25<D1 / D2<0.3.

[0052] In order to reduce the space occupied by the compression assembly, the compression assembly develops towards a "small shell diameter". When the maximum width of the frame 100 is reduced, the size of the bearing 200 should also be reduced. However, the size of the bearing 200 will affect the supporting effect of the crankshaft 300, so the size of the bearing 200 cannot be changed at will. In this embodiment, the maximum width of the frame 100 and the inner diameter of the bearing 200 are associated. When D1 and D2 meet 0.25<D1 / D2<0.3, the compression assembly has the characteristic of "small shell diameter". Moreover, within the above range, the bearing 200 can effectively support the crankshaft 300 to ensure the operating stability of the compression assembly.

[0053] Combination Figure 2 and Figure 3 As shown, in some embodiments, optionally, the crankshaft 300 extends out of the first side of the frame 100, the second side of the frame 100 is provided with an oil groove 120, the first side and the second side of the frame 100 are two opposite sides of the frame 100, the frame 100 is provided with a bearing chamber 130, the bearing 200 is located in the bearing chamber 130, and the groove 110 and the bearing chamber 130 are both connected to the oil groove 120. Wherein, taking the first side of the frame 100 as a reference, the end of the bearing 200 is lower than the bottom wall of the oil groove 120.

[0054] An oil groove 120 is provided on the second side of the frame 100, and the bearing chamber 130 is connected to the oil groove 120, so that the oil in the oil groove 120 can flow into the bearing chamber 130, so that the oil can lubricate the bearing 200 and the crankshaft 300, and reduce the wear of the crankshaft 300 and the bearing 200. The crankshaft 300 extends out of the frame 100 in the direction away from the second side of the frame 100. The second side of the frame 100 is usually provided with a movable scroll and other components. With the first side of the frame 100 as a reference, the end of the bearing 200 is lower than the bottom wall of the oil groove 120, that is, the bearing 200 does not extend into the oil groove 120. Since other components in the compression assembly may be installed in the oil groove 120, in order to avoid interference between the bearing 200 and other components in the oil groove 120, it is set that the bearing 200 does not extend into the oil groove 120, thereby ensuring the operation stability of each component in the compression assembly.

[0055] Due to the influence of processing accuracy, it is not easy for the end of the bearing 200 to be flush with the bottom wall of the oil groove 120. In order to prevent the bearing 200 from extending into the oil groove 120 due to the influence of processing accuracy, a height difference is set between the end of the bearing 200 and the bottom wall of the oil groove 120 in this embodiment to ensure that the bearing 200 will not interfere with other components in the oil groove 120.

[0056] like Figure 2As shown, in some embodiments, optionally, the frame 100 includes: a main frame 140 and an extension frame 150, the groove 110 and the oil groove 120 are provided on the main frame 140, the extension frame 150 is connected to the main frame 140, along the axial direction of the crankshaft 300, the extension frame 150 is located on one side of the main frame 140, a part of the bearing 200 is connected to the main frame 140, and the other part of the bearing 200 is connected to the extension frame 150; wherein, the groove 110 is provided on the bottom wall of the oil groove 120, and the bearing chamber 130 is adjacent to the first side of the frame 100 relative to the oil groove 120.

[0057] The oil groove 120 will occupy space on the frame 100. In order to allow the bearing 200 to avoid the oil groove 120, a portion of the frame 100 is extended in a direction away from the oil groove 120 to form an extended frame 150, and the extended frame 150 is used to install the bearing 200. By extending a portion of the frame 100 to form the extended frame 150 instead of thickening the frame 100 as a whole, this method can reduce the space occupied by the frame 100 and reduce the weight of the frame 100.

[0058] A portion of the bearing 200 is mounted on the main frame 140, and another portion of the bearing 200 is mounted on the extension frame 150, that is, the bearing chamber 130 extends from the extension frame 150 to the main frame 140. The main frame 140 has a high structural strength. In this way, it can be ensured that the bearing 200 can effectively support the crankshaft 300.

[0059] The bearing chamber 130 is connected to the bottom of the oil groove 120. In this case, the groove 110 is set on the bottom wall of the oil groove 120 so that the groove 110 is located on the side of the bearing chamber 130, ensuring that the groove 110 can effectively reduce the local stiffness of the frame 100 and improve the deformation capacity of the local frame 100.

[0060] In some embodiments, optionally, the groove 110 includes an annular groove extending along the circumference of the bearing 200 ; or there are multiple grooves 110 , and the multiple grooves 110 are distributed at intervals along the circumference of the bearing 200 .

[0061] The groove 110 may be an annular structure, and the annular groove extends along the circumference of the bearing 200 . When the bearing 200 is subjected to the deformation force of the crankshaft 300 , the partial frame 100 circumferentially of the bearing 200 may be deformed accordingly.

[0062] Alternatively, a plurality of grooves 110 may be provided around the bearing 200 , with two adjacent grooves 110 spaced apart from each other, which can also cause a portion of the frame 100 circumferentially of the bearing 200 to deform due to the force of the crankshaft 300 .

[0063] The bearing 200 is located at the axial end of the frame 100, the main shaft of the crankshaft 300 is coaxial with the bearing 200 and slides relatively, the groove 110 is located at the bottom of the oil groove 120 of the frame 100 close to the side of the bearing 200 and extends downward, forming a uniformly distributed annular groove wall structure, which can effectively reduce the local stiffness of the structure and increase the local deformation, improve the local oil film thickness of the main shaft, and then increase the contact area between the crankshaft 300 and the bearing 200, reduce the contact pressure, play a role in improving local eccentric wear, and then effectively improve the reliability of the compressor operation.

[0064] The compression assembly in this embodiment may be a scroll compressor.

[0065] In an embodiment of the present utility model, a refrigeration device is proposed, including: a compression assembly as in any of the above embodiments, and can achieve the same technical effect, which will not be described in detail here.

[0066] Exemplarily, the refrigeration device is an air conditioner.

[0067] In an embodiment of the utility model, a vehicle is proposed, comprising: a compression assembly as in any of the above embodiments, or a refrigeration device as in the above embodiments, and can achieve the same technical effects, which will not be repeated here.

[0068] The vehicle can be a traditional fuel vehicle or a new energy vehicle, including pure electric vehicles, extended-range electric vehicles, hybrid vehicles, fuel cell electric vehicles, hydrogen engine vehicles, etc.

[0069] In the present invention, the term "plurality" means two or more than two, unless otherwise clearly defined. The terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0070] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0071] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A compression assembly, characterized in that: include: A frame, wherein a groove is provided on the frame; A bearing connected to the frame, wherein the grooves are distributed along the circumference of the bearing; A crankshaft, wherein the crankshaft passes through the bearing; The radial thickness of the bearing is H1, the width of the groove in the radial direction of the bearing is H2, the radial spacing between the groove and the bearing is H3, and H1, H2 and H3 satisfy 0.5<H2 / (H1+H3)<0.

6.

2. The compression assembly according to claim 1, characterized in that H1 and H2 satisfy 0.8<H2 / H1<0.

9.

3. The compression assembly according to claim 1, characterized in that The axial length of the bearing is L1, and the length of the groove along the axial direction of the bearing is L2, and L1 and L2 satisfy 0.12<L2 / L1<0.

17.

4. The compression assembly according to claim 3, characterized in that H2 and L2 satisfy, 0.6<H2 / L2<0.

65.

5. The compression assembly according to any one of claims 1 to 4, characterized in that The inner diameter of the bearing is D1, and the maximum width of the frame along the radial direction of the bearing is D2, and D1 and D2 satisfy 0.25<D1 / D2<0.

3.

6. The compression assembly according to any one of claims 1 to 4, characterized in that The crankshaft extends out of the first side of the frame, the second side of the frame is provided with an oil groove, the first side and the second side of the frame are two opposite sides of the frame, a bearing chamber is provided on the frame, the bearing is located in the bearing chamber, and the groove and the bearing chamber are both connected to the oil groove; Wherein, based on the first side of the frame, the end of the bearing is lower than the bottom wall of the oil groove.

7. The compression assembly according to claim 6, characterized in that The frame comprises: A main frame, the groove and the oil tank are arranged on the main frame; An extension frame connected to the main frame, and along the axial direction of the crankshaft, the extension frame is located on one side of the main frame, a part of the bearing is connected to the main frame, and another part of the bearing is connected to the extension frame; Wherein, the groove is arranged on the bottom wall of the oil groove; the bearing chamber is adjacent to the first side of the frame relative to the oil groove.

8. The compression assembly according to any one of claims 1 to 4, characterized in that The groove comprises an annular groove extending along the circumference of the bearing; or There are multiple grooves, and the multiple grooves are distributed at intervals along the circumference of the bearing.

9. A refrigeration device, characterized in that: include: A compression assembly as claimed in any one of claims 1 to 8.

10. A vehicle, characterized in that: include: A compression assembly as claimed in any one of claims 1 to 8; or The refrigeration device as claimed in claim 9.

Images