Bearing structure, motor and fan

Abstract

The utility model provides a bearing structure, motor and fan relates to bearing cooling technical field. Bearing structure includes bearing seat, bearing, pivot and oil throwing spare, is provided with oil groove and airflow channel in bearing seat, is provided with the shaft sleeve and first heat dissipation spare in oil groove, is provided with first heat dissipation passage in first heat dissipation spare, is provided with first heat dissipation fin outside first heat dissipation spare, bearing is embedded in the shaft sleeve, pivot is worn in bearing, oil throwing spare sets up in pivot. Air flows into first heat dissipation passage through airflow channel. Because first heat dissipation spare is immersed in lubricating oil, so the air flowing in first heat dissipation passage can exchange heat with lubricating oil in oil groove through first heat dissipation spare, makes lubricating oil cooling and cooling down. The lubricating oil after temperature reduction can more effectively cool bearing, is favorable to bearing heat dissipation to prolong the operation life of bearing.

Description

Technical Field

[0001] This utility model relates to the field of bearing cooling technology, and in particular to a bearing structure, a motor and a fan. Background Technology

[0002] High-speed motors used in fans typically lubricate bearings with grease. However, grease is semi-solid, highly viscous, and has poor flowability, resulting in poor heat dissipation performance, which is detrimental to bearing heat dissipation and affects bearing life. Utility Model Content

[0003] In order to solve the problems existing in the prior art, one of the objectives of this utility model is to provide a bearing structure.

[0004] This utility model provides the following technical solution: A bearing structure, comprising: The bearing housing has an oil groove and an airflow channel inside. The oil groove is used to hold lubricating oil. A bushing and a first heat sink are provided inside the oil groove. The first heat sink is located at the lower part of the oil groove. A first heat sink channel is provided inside the first heat sink. The two ends of the first heat sink channel are respectively connected to the airflow channel. A first heat sink fin is provided outside the first heat sink. The bearing is embedded in the bushing; A rotating shaft, which passes through the bearing; and An oil-throwing component is disposed on the rotating shaft and located within the oil trough.

[0005] As a further optional solution for the bearing structure, a second heat dissipation component is also provided in the oil sump. The second heat dissipation component is located at the upper part of the oil sump. The second heat dissipation component includes a second heat dissipation channel, and the two ends of the second heat dissipation channel are respectively connected to the airflow channel. The second heat dissipation component is provided with a second heat dissipation fin.

[0006] As a further optional embodiment of the bearing structure, the second heat dissipation fin extends along the axial direction of the second heat dissipation channel, and a notch is provided on the second heat dissipation fin, the notch corresponding to the oil slinger along the radial direction of the rotating shaft.

[0007] As a further alternative to the bearing structure, the width of the second heat dissipation fin increases from the notch towards both ends along the axial direction of the second heat dissipation channel.

[0008] As a further alternative to the bearing structure, the top of the bushing is provided with an oil guide groove, and part of the bearing is exposed in the oil guide groove.

[0009] As a further optional embodiment of the bearing structure, a groove is provided at the bottom of the inner wall of the bushing, the groove extending along the axial direction of the bushing, one end of the groove corresponding to the oil guide groove, and the other end of the groove located on the side of the bearing opposite to the oil guide groove; and / or, A bearing cap is provided at one end of the bushing away from the bearing seat along its own axis. The top end of the bearing cap is horizontally positioned and is lower than the top end of the inner wall of the bushing.

[0010] As a further optional embodiment of the bearing structure, a first oil seal is provided inside the bushing, and a second oil seal is provided inside the bearing housing. Both the first oil seal and the second oil seal are sleeved on the rotating shaft, with the first oil seal located between the bearing and the second oil seal. The rotating shaft is provided with an annular atomizing groove, which is located between the first oil seal and the second oil seal. The atomizing groove is provided with a plurality of teeth, which are arranged along the circumference of the rotating shaft. The bearing housing is also provided with an oil drain channel, one end of which is located between the first oil seal and the second oil seal.

[0011] Another objective of this invention is to provide an electric motor.

[0012] This utility model provides the following technical solution: An electric motor includes a body and the aforementioned bearing structure, wherein the bearing housings are arranged in pairs at both ends of the body along the axial direction.

[0013] As a further optional solution for the motor, a third heat dissipation channel is provided inside the body, and the two ends of the third heat dissipation channel are respectively connected to the airflow channel; The motor also includes fan blades, which are sleeved on the rotating shaft and disposed at the air inlet of one of the airflow channels.

[0014] Another objective of this invention is to provide a fan.

[0015] This utility model provides the following technical solution: A fan includes an impeller, a volute, a duct, and the aforementioned motor; The impeller is sleeved on the rotating shaft, the volute is connected to the bearing seat at the end away from the machine body, the volute covers the impeller, one end of the air duct is connected to the air inlet end of the volute, and the other end of the air duct is connected to the bearing seat and communicates with the airflow channel; The body is provided with a fourth heat dissipation channel, which is connected to the end of the airflow channel away from the duct. The surface of the body is also provided with a gas inlet that connects to the fourth heat dissipation channel.

[0016] The embodiments of this utility model have the following beneficial effects: In the aforementioned bearing structure, the shaft is rotatably mounted on the bearing housing via the bearing, and rotates to drive the oil slinger. The oil slinger, located within the oil groove, continuously throws lubricating oil onto the inner wall of the bearing housing. The lubricating oil flows along the inner wall of the bearing housing to the bushing, lubricating and cooling the bushing and the bearing embedded within it. Simultaneously, air flows into the first heat dissipation channel through the airflow channel. Because the first heat dissipation component is located at the bottom of the oil groove and immersed in the lubricating oil, the air flowing in the first heat dissipation channel can exchange heat with the lubricating oil in the oil groove through the first heat dissipation component, cooling the lubricating oil. Furthermore, the first heat dissipation fins located outside the first heat dissipation component enhance the heat exchange effect. The cooled lubricating oil can more effectively cool the bearing, which is beneficial for bearing heat dissipation and thus extends the bearing's service life.

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This diagram shows an overall structural schematic of a bearing structure provided in an embodiment of the present invention; Figure 2 A cross-sectional schematic diagram of a bearing structure provided by an embodiment of the present invention is shown; Figure 3 This diagram shows the internal structure of the bearing housing in a bearing structure provided by an embodiment of the present invention; Figure 4 This diagram shows an overall structural schematic of a motor according to an embodiment of the present invention; Figure 5 A cross-sectional schematic diagram of an electric motor provided in an embodiment of the present invention is shown; Figure 6 A schematic diagram of the overall structure of a fan provided in an embodiment of this utility model is shown.

[0020] Explanation of key component symbols: 10-Bearing structure; 20-Chassis; 21-Third heat dissipation channel; 22-Fourth heat dissipation channel; 23-Gas inlet; 30-Fan blade; 40-Voltage; 50-Air duct; 100-Bearing housing; 101-Baffle plate; 102-Oil chamber; 103-Cover plate; 110-Oil groove; 120-Airflow channel; 121-First airflow channel; 122-Second airflow channel; 130-Shaft sleeve; 131-Oil guide groove; 132-Groove; 140-First heat sink; 141-First heat dissipation channel; 142-First heat dissipation fin; 150-Second heat sink; 151-Second heat dissipation channel; 152-Second heat dissipation fin; 153-Notch; 160-Bearing cover; 170-First oil seal; 180-Second oil seal; 190-Oil drain channel; 200-Bearing; 300-Shaft; 310-Atomizing groove; 400-Oil slinger; 500-Oil storage box. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0022] It should be noted that when an element is said to be "fixed" to another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly" on another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the template description is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] Example This embodiment provides a bearing structure 10, which can be applied to motors or other devices with rotating parts.

[0027] Please refer to the following: Figure 1 and Figure 2 The bearing structure 10 includes a bearing housing 100, a bearing 200, a rotating shaft 300, and an oil slinger 400.

[0028] The bearing housing 100 includes an oil groove 110 and an airflow channel 120. The oil groove 110 holds lubricating oil and houses a bushing 130 and a first heat sink 140. The first heat sink 140 is located below the oil groove 110 and contains a first heat dissipation channel 141 (see reference). Figure 3 The two ends of the first heat dissipation channel 141 are respectively connected to the airflow channel 120, and the first heat dissipation component 140 is provided with a first heat dissipation fin 142.

[0029] Accordingly, the bearing 200 is embedded in the bushing 130, and the rotating shaft 300 passes through the bearing 200.

[0030] In addition, the oil slinger 400 is provided on the rotating shaft 300 and is located in the oil trough 110.

[0031] In the aforementioned bearing structure 10, the rotating shaft 300 is rotatably mounted on the bearing housing 100 via the bearing 200, and drives the oil slinger 400 to rotate during rotation. The oil slinger 400, located within the oil groove 110, continuously throws lubricating oil onto the inner wall of the bearing housing 100. The lubricating oil flows along the inner wall of the bearing housing 100 to the bushing 130, lubricating and cooling the bushing 130 and the bearing 200 embedded within it. Simultaneously, air flows into the first heat dissipation channel 141 through the airflow channel 120. Since the first heat dissipation element 140 is located at the lower part of the oil groove 110 and immersed in the lubricating oil, the air flowing within the first heat dissipation channel 141 can exchange heat with the lubricating oil in the oil groove 110 through the first heat dissipation element 140, cooling the lubricating oil. Furthermore, the first heat dissipation fins 142 located outside the first heat dissipation element 140 enhance the heat exchange effect. The lubricating oil, after its temperature drops, can cool the bearing 200 more effectively, which is beneficial for the heat dissipation of the bearing 200 and thus extends the service life of the bearing 200.

[0032] For example, a plurality of first heat dissipation fins 142 are provided on the outside of the first heat dissipation component 140. Each first heat dissipation fin 142 extends along the length direction of the first heat dissipation component 140, that is, it extends along the axial direction of the first heat dissipation channel 141, and the two ends of the first heat dissipation fin 142 respectively abut against the inner wall of the oil groove 110. The plurality of first heat dissipation fins 142 are arranged circumferentially along the first heat dissipation component 140.

[0033] In use, the first heat dissipation fins 142 can significantly increase the contact area between the entire first heat dissipation component 140 and the lubricating oil, thereby enhancing the heat exchange effect between the air flowing in the first heat dissipation channel 141 and the lubricating oil in the oil sump 110.

[0034] Please refer to the following: Figure 2 and Figure 3 In some embodiments, the airflow channel 120 includes a first airflow channel 121 and a second airflow channel 122. One end of the first heat dissipation channel 141 is connected to the first airflow channel 121, and the other end of the first heat dissipation channel 141 is connected to the second airflow channel 122.

[0035] The bearing housing 100 includes a partition 101, an oil chamber 102, and a cover plate 103, which are connected sequentially along the axial direction of the bushing 130. The partition 101 and the oil chamber 102 enclose a first airflow channel 121, the oil chamber 102 and the cover plate 103 enclose an oil groove 110, and a second airflow channel 122 is provided inside the cover plate 103.

[0036] Specifically, the first heat sink 140 is provided with multiple components. One end of each first heat dissipation channel 141 is connected to the first airflow channel 121, and the other end is connected to the second airflow channel 122.

[0037] During use, air flows into each of the first heat dissipation channels 141 from the first airflow channel 121. After heat exchange between the air and the lubricating oil, the air in each of the first heat dissipation channels 141 merges into the second airflow channel 122.

[0038] Alternatively, air flows from the second airflow channel 122 into each of the first heat dissipation channels 141. After heat exchange between the air and the lubricating oil, the air in each of the first heat dissipation channels 141 merges into the first airflow channel 121.

[0039] For example, the bushing 130 is integrally formed with the oil chamber 102.

[0040] In some embodiments, a second heat dissipation component 150 is further provided in the oil tank 110. The second heat dissipation component 150 is located at the upper part of the oil tank 110. The second heat dissipation component 150 includes a second heat dissipation channel 151. Both ends of the second heat dissipation channel 151 are respectively connected to the airflow channel 120. The second heat dissipation component 150 is provided with second heat dissipation fins 152.

[0041] Understandably, as the oil-slinging component 400 rotates with the shaft 300, it will also throw some lubricating oil onto the second heat sink 150, which will then flow down its surface. Simultaneously, external air flows into the second heat dissipation channel 151 through the airflow channel 120, and then exchanges heat with this portion of lubricating oil through the second heat sink 150, thus cooling the lubricating oil. During this process, the second heat dissipation fins 152 significantly increase the surface area of ​​the entire second heat sink 150, allowing more lubricating oil to be thrown onto it, thereby improving the cooling efficiency of the airflow within the second heat dissipation channel 151.

[0042] Similar to the first heat sink 140, the second heat sink 150 is provided with multiple components. One end of each second heat dissipation channel 151 is connected to the first airflow channel 121, and the other end is connected to the second airflow channel 122.

[0043] In use, air flows from the first airflow channel 121 into each of the first heat dissipation channels 141 and each of the second heat dissipation channels 151. After the air exchanges heat with the lubricating oil, the air in each of the first heat dissipation channels 141 and each of the second heat dissipation channels 151 merges into the second airflow channel 122.

[0044] Alternatively, air flows from the second airflow channel 122 into each of the first heat dissipation channels 141 and each of the second heat dissipation channels 151. After the air exchanges heat with the lubricating oil, the air in each of the first heat dissipation channels 141 and each of the second heat dissipation channels 151 merges into the first airflow channel 121.

[0045] Furthermore, in some embodiments, the second heat dissipation fin 152 extends along the axial direction of the second heat dissipation channel 151. The second heat dissipation fin 152 is provided with a notch 153, which corresponds to the oil slinger 400 along the radial direction of the rotating shaft 300.

[0046] Since the notch 153 corresponds to the oil slinger 400 along the radial direction of the rotating shaft 300, the oil slinger 400 throws most of the lubricating oil to the notch 153. This portion of lubricating oil is not easily blocked by the second heat dissipation fins 152, but can directly impact the main body of the second heat dissipation component 150, which not only enhances the heat exchange between the lubricating oil and the main body of the second heat dissipation component 150, but also causes the lubricating oil to splash in all directions, thereby better cooling the lubricating oil.

[0047] For example, a plurality of second heat dissipation fins 152 are provided on the outside of the second heat dissipation member 150, and the plurality of second heat dissipation fins 152 are arranged circumferentially along the second heat dissipation member 150. In addition, the two ends of the second heat dissipation fins 152 respectively abut against the inner wall of the oil groove 110.

[0048] Furthermore, in some embodiments, the width of the second heat dissipation fin 152 increases from the notch 153 toward both ends along the axial direction of the second heat dissipation channel 151.

[0049] At this point, for each of the second heat dissipation fins 152 located below the central axis of the second heat dissipation component 150, the width of its notch 153 is narrower, it is closer to the main body of the second heat dissipation component 150, and its height is higher; the width of its two ends is wider, it is farther from the main body of the second heat dissipation component 150, and its height is lower. Therefore, when the lubricating oil splashed onto the second heat dissipation component 150 flows down the surface of this part of the second heat dissipation fin 152, it first flows along the notch 153 to both ends, and then flows from both ends of the second heat dissipation fin 152 to the inner wall of the oil groove 110.

[0050] During this process, the lubricating oil flows a longer distance along the surface of this part of the second heat dissipation fin 152, and the heat exchange between it and the second heat dissipation fin 152 is more complete, so that the lubricating oil can be cooled down better.

[0051] In some embodiments, the top of the bushing 130 is provided with an oil guide groove 131, and a portion of the bearing 200 is exposed in the oil guide groove 131.

[0052] When the lubricating oil flows along the inner wall of the bearing housing 100 to the bushing 130, the lubricating oil further flows into the oil guide groove 131 at the top of the bushing 130, and then comes into contact with the part of the bearing 200 exposed in the oil guide groove 131, so as to ensure that the lubricating oil can effectively lubricate and cool the bearing 200.

[0053] Furthermore, in some embodiments, a groove 132 is provided at the bottom of the inner wall of the bushing 130. The groove 132 extends along the axial direction of the bushing 130, one end of the groove 132 corresponds to the oil guide groove 131, and the other end of the groove 132 is located on the side of the bearing 200 opposite to the oil guide groove 131.

[0054] When in use, the lubricating oil flowing into the oil guide groove 131 can flow through the groove 132 to the side of the bearing 200 opposite to the oil guide groove 131, thereby more fully wetting the bearing 200 and better lubricating and cooling the bearing 200.

[0055] For example, the groove 132 is formed at the bottom of the inner wall of the bushing 130, and its width is 2mm.

[0056] Furthermore, in some embodiments, a bearing cap 160 is provided at the end of the bushing 130 away from the bearing housing 100 along its own axis. The top end of the bearing cap 160 is horizontally positioned, and the top end of the bearing cap 160 is lower than the top end of the inner wall of the bushing 130.

[0057] Understandably, as lubricating oil continuously flows into the oil guide groove 131, the oil level in the oil guide groove 131 and at the location of the bearing 200 continuously rises. When the oil level is higher than the top of the bearing cover 160, excess lubricating oil can overflow from the top of the bearing cover 160, preventing the lubricating oil level from being too high and causing the operating temperature of the bearing 200 to rise, thereby avoiding affecting the service life of the lubricating oil.

[0058] For example, the top of the bearing cap 160 is flush with the axis of the bushing 130.

[0059] Please see Figure 2 In some embodiments, a first oil seal 170 is provided inside the bushing 130, and a second oil seal 180 is provided inside the bearing housing 100. Both the first oil seal 170 and the second oil seal 180 are sleeved on the rotating shaft 300, with the first oil seal 170 located between the bearing 200 and the second oil seal 180.

[0060] Correspondingly, an annular atomizing groove 310 is provided on the rotating shaft 300, and the atomizing groove 310 is located between the first oil seal 170 and the second oil seal 180. Several teeth are provided in the atomizing groove 310, and the teeth are arranged circumferentially along the rotating shaft 300.

[0061] In addition, an oil drain channel 190 is provided inside the bearing housing 100, with one end of the oil drain channel 190 located between the first oil seal 170 and the second oil seal 180.

[0062] As mentioned earlier, a certain level of lubricating oil is usually stored inside the bushing 130. Under the premise of avoiding excessive lubricating oil level which would cause the operating temperature of the bearing 200 to rise, the lubricating oil's lubrication and cooling effect on the bearing 200 is maximized.

[0063] During use, the lubricating oil remaining in the bushing 130 flows along the surface of the shaft 300. The lubricating oil flowing along the surface of the shaft 300 towards the end where the bearing cap 160 is located can overflow from the top of the bearing cap 160, while the lubricating oil flowing towards the other end is blocked by the first oil seal 170 and the second oil seal 180. At this time, the first oil seal 170 and the second oil seal 180 can provide a double seal, more effectively preventing this portion of the lubricating oil from flowing along the surface of the shaft 300 to outside the bearing housing 100.

[0064] Understandably, a small amount of lubricating oil will typically seep through the first oil seal 170, that is, flow along the surface of the rotating shaft 300 to the space between the first oil seal 170 and the second oil seal 180. This portion of lubricating oil flows into the atomizing groove 310, where it is flung out by the teeth rotating at high speed with the rotating shaft 300 to form an oil mist, which is used to lubricate the second oil seal 180, protect the second oil seal 180, and extend its service life.

[0065] Subsequently, excess lubricating oil is discharged along the oil drain channel 190, for example, to the cooling lubricating oil pipe, to participate in the cooling circulation process, and to avoid lubricating oil loss, which would affect the operation of the motor.

[0066] For example, the second oil seal 180 is disposed within the oil chamber 102.

[0067] For example, an oil reservoir 500 is provided below the bearing housing 100, and the oil reservoir 500 is connected to the oil drain channel 190 and the oil trough 110 respectively. The lubricating oil discharged from the oil drain channel 190 flows into the oil reservoir 500 and can be replenished into the oil trough 110 for reuse.

[0068] In summary, in the aforementioned bearing structure 10, the rotating shaft 300 can drive the oil slinger 400 to rotate. The oil slinger 400 continuously throws lubricating oil onto the inner wall of the bearing housing 100 and the second heat sink 150. The lubricating oil flows along the inner wall of the bearing housing 100 to the bushing 130, lubricating and cooling the bushing 130 and the bearing 200. Simultaneously, air flows into the first heat sink 141 and the second heat sink 151 through the airflow channel 120, or exchanges heat with the lubricating oil in the oil groove 110 through the first heat sink 140 immersed in the lubricating oil, or exchanges heat with the lubricating oil thrown onto the second heat sink 150, thus cooling the lubricating oil. The cooled lubricating oil can more effectively cool the bearing 200, which is beneficial for heat dissipation and extends the service life of the bearing 200.

[0069] Please refer to the following: Figure 4 and Figure 5This embodiment also provides a motor, including a housing 20 and the aforementioned bearing structure 10. The bearing housings 100 are arranged in pairs at both ends of the housing 20 along its axial direction.

[0070] Specifically, the axis of bushing 130 coincides with the axis of fuselage 20, and partition 101 is connected to the end of fuselage 20 along the axial direction.

[0071] In some embodiments, a third heat dissipation channel 21 is provided inside the body 20, and the two ends of the third heat dissipation channel 21 are respectively connected to the airflow channel 120.

[0072] In addition, the motor also includes a fan blade 30. The fan blade 30 is sleeved on the rotating shaft 300 and is located at the air inlet of one of the airflow channels 120.

[0073] In operation, the shaft 300 drives the fan blades 30 to rotate. Driven by the fan blades 30, air flows sequentially through one airflow channel 120, the third heat dissipation channel 21, and another airflow channel 120. When air flows through the airflow channel 120, it flows into the corresponding first heat dissipation channel 141 and second heat dissipation channel 151 to cool the lubricating oil. When air flows through the third heat dissipation channel 21, it cools the casing 20.

[0074] by Figure 5 Taking the shown perspective as an example, the fan blade 30 is located at the air inlet of the airflow channel 120 inside the bearing housing 100 at the right end of the fuselage 20.

[0075] For the bearing housing 100 at the right end of the fuselage 20, the end of its second airflow channel 122 that is away from the corresponding first heat dissipation channel 141 and second heat dissipation channel 151 is an air inlet, and the end of its first airflow channel 121 that is away from the corresponding first heat dissipation channel 141 and second heat dissipation channel 151 is an air outlet. Air flows from the second airflow channel 122 into each of the first heat dissipation channels 141 and each of the second heat dissipation channels 151 to cool the lubricating oil, and then merges into the first airflow channel 121. Subsequently, air flows from the first airflow channel 121 into the third heat dissipation channel 21 to cool the fuselage 20.

[0076] For the bearing housing 100 at the left end of the fuselage 20, the end of its first airflow channel 121 away from the corresponding first heat dissipation channel 141 and second heat dissipation channel 151 is the air inlet, and the end of its second airflow channel 122 away from the corresponding first heat dissipation channel 141 and second heat dissipation channel 151 is the air outlet. Air enters the first airflow channel 121 from the third heat dissipation channel 21, and then flows into each of the first heat dissipation channels 141 and each of the second heat dissipation channels 151 to cool the lubricating oil. Finally, the air flows into the second airflow channel 122 and is discharged.

[0077] Please see Figure 6 This embodiment also provides a fan, including an impeller (not shown in the figure), a volute 40, a duct 50, and the aforementioned motor.

[0078] The impeller is mounted on the rotating shaft 300. The volute 40 is connected to the end of the bearing housing 100 away from the body 20, and the volute 40 covers the impeller. One end of the air duct 50 is connected to the air inlet end of the volute 40, and the other end of the air duct 50 is connected to the bearing housing 100 and communicates with the airflow channel 120.

[0079] In addition, a fourth heat dissipation channel 22 is provided inside the fuselage 20, and the fourth heat dissipation channel 22 is connected to the end of the airflow channel 120 away from the air duct 50. An air inlet 23 connected to the fourth heat dissipation channel 22 is also provided on the surface of the fuselage 20.

[0080] When the above-mentioned fan is running, the rotating shaft 300 drives the impeller to rotate. The impeller cooperates with the volute 40 to drive the airflow and create negative pressure at the air inlet end of the volute 40.

[0081] Under negative pressure, external air is directly drawn into the volute 40 through the air inlet. At the same time, a portion of the air is drawn into the gas inlet 23, then flows sequentially through the fourth heat dissipation channel 22, the airflow channel 120, and the air duct 50, and is finally drawn into the volute 40 as well.

[0082] When air flows through the fourth heat dissipation channel 22, it can cool the body 20; when air flows through the airflow channel 120, it flows into the corresponding first heat dissipation channel 141 and second heat dissipation channel 151, which can cool the lubricating oil.

[0083] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0084] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0085] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A bearing structure, characterized in that, include: The bearing housing has an oil groove and an airflow channel inside. The oil groove is used to hold lubricating oil. A bushing and a first heat sink are provided inside the oil groove. The first heat sink is located at the lower part of the oil groove. A first heat sink channel is provided inside the first heat sink. The two ends of the first heat sink channel are respectively connected to the airflow channel. A first heat sink fin is provided outside the first heat sink. The bearing is embedded in the bushing; A rotating shaft, which passes through the bearing; and An oil-throwing component is disposed on the rotating shaft and located within the oil trough.

2. The bearing structure according to claim 1, characterized in that, The oil tank is also provided with a second heat dissipation component, which is located at the top of the oil tank. The second heat dissipation component includes a second heat dissipation channel, the two ends of which are respectively connected to the airflow channel. The second heat dissipation component is provided with a second heat dissipation fin.

3. The bearing structure according to claim 2, characterized in that, The second heat dissipation fin extends along the axial direction of the second heat dissipation channel, and a notch is provided on the second heat dissipation fin, the notch corresponding to the oil slinger along the radial direction of the rotating shaft.

4. The bearing structure according to claim 3, characterized in that, The width of the second heat dissipation fin increases from the notch towards both ends along the axial direction of the second heat dissipation channel.

5. The bearing structure according to claim 1, characterized in that, The top of the bushing is provided with an oil guide groove, and part of the bearing is exposed in the oil guide groove.

6. The bearing structure according to claim 5, characterized in that, A groove is provided at the bottom of the inner wall of the bushing, the groove extending along the axial direction of the bushing, one end of the groove corresponding to the oil guide groove, and the other end of the groove located on the side of the bearing opposite to the oil guide groove; and / or, A bearing cap is provided at one end of the bushing away from the bearing seat along its own axis. The top end of the bearing cap is horizontally positioned and is lower than the top end of the inner wall of the bushing.

7. The bearing structure according to claim 1, characterized in that, A first oil seal is provided inside the bushing, and a second oil seal is provided inside the bearing housing. Both the first oil seal and the second oil seal are sleeved on the rotating shaft, with the first oil seal located between the bearing and the second oil seal. The rotating shaft is provided with an annular atomizing groove, which is located between the first oil seal and the second oil seal. The atomizing groove is provided with a plurality of teeth, which are arranged along the circumference of the rotating shaft. The bearing housing is also provided with an oil drain channel, one end of which is located between the first oil seal and the second oil seal.

8. An electric motor, characterized in that, The invention includes a fuselage and a bearing structure as described in any one of claims 1-7, wherein the bearing housings are arranged in pairs at both ends of the fuselage along the axial direction.

9. The motor according to claim 8, characterized in that, The body is provided with a third heat dissipation channel, and the two ends of the third heat dissipation channel are respectively connected to the airflow channel; The motor also includes fan blades, which are sleeved on the rotating shaft and disposed at the air inlet of one of the airflow channels.

10. A fan, characterized in that, Includes an impeller, a volute, a duct, and the motor as described in claim 8; The impeller is sleeved on the rotating shaft, the volute is connected to the bearing seat at the end away from the machine body, the volute covers the impeller, one end of the air duct is connected to the air inlet end of the volute, and the other end of the air duct is connected to the bearing seat and communicates with the airflow channel; The body is provided with a fourth heat dissipation channel, which is connected to the end of the airflow channel away from the duct. The surface of the body is also provided with a gas inlet that connects to the fourth heat dissipation channel.

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