CN108119548B - Bearing bush, sliding bearing assembly with bearing bush and compressor - Google Patents

Abstract

The invention discloses a bearing bush, a sliding bearing assembly with the bearing bush and a compressor with the bearing bush. The bearing bush is sleeved on the rotating shaft, and a gap is reserved between the peripheral wall of the rotating shaft and the bearing bush. The bearing bush comprises a body part, wherein the body part is cylindrical and is sleeved on the rotating shaft. The body portion is provided with an oil inlet groove and an oil outlet groove spaced from the oil inlet groove, the oil inlet groove is communicated with the gap, and the oil outlet groove is communicated with the gap. The body part is provided with an oil inlet hole and an oil outlet hole, the oil inlet hole is communicated with the oil inlet groove, and the oil outlet hole is communicated with the oil outlet groove. According to the bearing bush, the oil inlet groove and the oil outlet groove which are spaced are arranged, so that the relative independence of oil inlet and oil outlet of the bearing bush can be realized, new oil flowing from the oil inlet groove can be fully mixed with hot oil in the gap, and the temperature of a rotating shaft can be effectively reduced. In addition, hot oil and impurities on the periphery of the rotating shaft can flow out of the oil outlet groove, so that the cleanliness in the bearing bush can be improved, and the lubricating effect between the bearing bush and the rotating shaft can be improved.

Description

Bearing bush and sliding bearing assembly having the same, compressor

technical field

The present invention relates to the technical field of compressors, in particular, to a bearing bush, a sliding bearing assembly having the same, and a compressor.

Background technique

Sliding bearings are widely used in centrifugal compressors because of their simple structure, convenient processing and low cost. In the related art, the sliding bearing has an axial oil groove, and the axial oil groove is provided with an oil supply hole, the lubricating oil can enter the axial oil groove through the oil supply hole, and the lubricating oil between the rotating shaft and the bearing bush is heated by the high-speed rotating shaft. Hot oil, the hot oil will also enter the axial oil tank every one rotation, and the hot oil will be mixed with the new oil. Sometimes in order to improve the mixing and cooling effect of the new oil in the axial oil tank, an oil drain hole is also opened at the end of the oil tank, and the mixed lubricating oil can flow out from the oil drain hole. When the rotating shaft rotates at a high speed, the peripheral speed of the rotating shaft is much greater than the speed of the lubricating oil flowing into the oil tank from the oil supply hole, and the injection ratio of new oil is very small, the hot oil and the new lubricating oil cannot be fully mixed, and the rotating shaft cannot be fully cooled. , The temperature of the lubricating oil around the rotating shaft is high, and it will also cause the lubricating oil between the outer peripheral wall of the rotating shaft and the inner peripheral wall of the bearing to be insufficiently filled, and the rotating shaft cannot be fully lubricated, resulting in a decrease in the viscosity of the lubricating oil and possible wear. Rotation of the shaft, resulting in a decrease in the working efficiency of the sliding bearing. At the same time, the hot oil may also contain impurities generated by the bearing operation, which cannot be effectively collected and discharged, increasing the risk of bearing operation.

SUMMARY OF THE INVENTION

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention proposes a bearing bush, which has the advantages of simple structure, easy manufacture and low cost.

The present invention also provides a sliding bearing assembly having the above bearing bush.

The present invention further provides a compressor having the above bearing bush.

According to the bearing bush of the embodiment of the present invention, the bearing bush is sleeved on the rotating shaft, and there is a gap between the outer peripheral wall of the rotating shaft and the bearing bush, and the bearing bush includes: a main body part, the main body part is cylindrical, the The body part is sleeved on the rotating shaft, the body part has an oil inlet groove and an oil outlet groove spaced apart from the oil inlet groove, the oil inlet groove communicates with the gap to supply oil into the gap, and the oil outlet groove communicated with the gap to discharge the oil in the gap, the body part has an oil inlet hole and an oil outlet hole, the oil inlet hole is communicated with the oil inlet groove, and the oil outlet hole is connected with the oil outlet groove Connected.

According to the bearing bush of the embodiment of the present invention, by setting the oil inlet groove and the oil outlet groove, the oil inlet groove and the oil outlet groove are distributed at intervals, so that the relative independence of the oil inlet and the oil outlet of the bearing bush can be realized, so that the new oil flowing from the oil inlet groove can be connected with the rotating shaft. The hot oil with high peripheral temperature is fully mixed, and the new oil can fully exchange heat with the hot oil, thereby effectively reducing the temperature of the rotating shaft. In addition, the mixture and impurities of hot oil and new oil on the periphery of the rotating shaft can flow out from the oil outlet groove, which can cooperate with the oil inlet groove to form a circulation, and can also improve the cleanliness in the bearing bush, which can improve the lubrication between the bearing pad and the rotating shaft. Effect.

According to some embodiments of the present invention, in the rotation direction of the rotating shaft, the oil inlet groove is located downstream of the oil outlet groove. As a result, the hot oil at the gap can be collected at the oil outlet first and flow out from the oil outlet hole, so as to provide space for the supply of new oil, so that the new oil can fully cool the rotating shaft and improve the relationship between the new oil and the rotating shaft. The indirect heat exchange efficiency can improve the working performance of the bearing bush.

According to some embodiments of the present invention, the oil inlet groove and the oil outlet groove are distributed along the circumferential direction of the body portion. Therefore, the extension and arrangement of the oil inlet groove and the oil outlet groove in the axial direction of the rotating shaft can be facilitated, and the effect of the new oil and the hot oil can be improved.

According to some embodiments of the present invention, a part of the peripheral wall of the body portion is convex toward the radially outer side of the rotating shaft to configure the oil inlet groove and the oil outlet groove. Therefore, the arrangement of the oil inlet groove and the oil outlet groove is facilitated, and the structure of the oil inlet groove and the oil outlet groove is more stable.

According to some embodiments of the present invention, the outer bottom wall of the oil inlet groove is an arc surface, and the outer bottom wall of the oil outlet groove is an arc surface. Therefore, it is convenient to set the inner wall surface of the oil inlet groove and the inner wall surface of the oil outlet groove as arc-shaped surfaces, and the arc-shaped surface is a smooth curved surface, which is convenient for the flow of lubricating oil (such as hot oil and new oil), thereby improving the flow of lubricating oil. Sex and smoothness.

According to some embodiments of the present invention, the oil inlet groove extends along the axis direction of the body portion, and the oil outlet groove extends along the axis direction of the body portion. In this way, the action range of the new oil in the oil inlet groove and the hot oil in the gap can be increased, so that the hot oil in the gap and in the axial direction can exchange heat with the new oil, so that the heat exchange efficiency can be improved. able to cool down sufficiently. In addition, the hot oil in the gap and in the direction of the axis can enter the oil outlet, avoiding the formation of blind spots in the oil outlet during the rotation of the rotating shaft, that is, the hot oil at some positions cannot flow to the oil outlet, thus improving the performance of the bearing bush.

According to some embodiments of the present invention, the oil inlet hole is located on the radially outer peripheral wall of the bearing bush. Thus, the arrangement of the oil inlet hole can be facilitated.

According to some embodiments of the present invention, in the axial direction of the rotating shaft, the oil outlet hole penetrates through the side wall of the oil outlet groove. Therefore, the hot oil can flow out of the bearing bush from the axial direction of the rotating shaft, which facilitates the flow of the hot oil and the collection of the oil outlet groove.

According to some embodiments of the present invention, there are multiple oil outlet holes. Thereby, the oil output efficiency can be improved, so that the fresh oil supply efficiency can be indirectly improved, and the heat exchange efficiency between the fresh oil and the hot oil can be further improved.

According to some embodiments of the present invention, both ends of the oil outlet groove in the axial direction of the rotating shaft are open ends, and the open ends are configured as the oil outlet holes. Therefore, the arrangement of the oil outlet hole can be omitted, the bearing bush setting process can be saved, and the production cost of the bearing bush can be reduced.

According to some embodiments of the present invention, there are a plurality of the oil inlet grooves, a plurality of the oil outlet grooves, and the plurality of the oil inlet grooves are in one-to-one correspondence with the plurality of the oil outlet grooves. Thereby, the heat exchange rate between the new oil and the hot oil can be increased, and the temperature of the rotating shaft can be cooled more effectively.

A sliding bearing assembly according to an embodiment of the present invention includes: a bearing pad, the bearing pad is the bearing pad described in any one of the above.

According to the sliding bearing assembly of the embodiment of the present invention, by setting the oil inlet groove and the oil outlet groove, the oil inlet groove and the oil outlet groove are distributed at intervals, so that the relative independence of the oil inlet and the oil outlet of the bearing bush can be realized, so that the new oil flowing from the oil inlet groove can be mixed with the oil. The hot oil with a high temperature on the periphery of the rotating shaft is thoroughly mixed, and the new oil can be fully heat-exchanged with the hot oil, thereby effectively reducing the temperature of the rotating shaft. In addition, the mixture and impurities of hot oil and new oil on the periphery of the rotating shaft can flow out from the oil outlet groove, which can cooperate with the oil inlet groove to form a circulation, and can also improve the cleanliness in the bearing bush, which can improve the lubrication between the bearing pad and the rotating shaft. Therefore, the working performance of the sliding bearing assembly can be improved.

A compressor according to an embodiment of the present invention includes: a sliding bearing assembly, wherein the sliding bearing assembly is the above-mentioned sliding bearing assembly.

According to the compressor of the embodiment of the present invention, by setting the oil inlet groove and the oil outlet groove, the oil inlet groove and the oil outlet groove are distributed at intervals, so that the relative independence of the oil inlet and the oil outlet of the bearing bush can be realized, so that the new oil flowing from the oil inlet groove can be connected with the rotating oil. The hot oil with high temperature around the shaft is thoroughly mixed, and the new oil can be fully heat-exchanged with the hot oil, so that the temperature of the rotating shaft can be effectively lowered. In addition, the mixture and impurities of hot oil and new oil on the periphery of the rotating shaft can flow out from the oil outlet groove, which can cooperate with the oil inlet groove to form a circulation, and can also improve the cleanliness in the bearing bush, which can improve the lubrication between the bearing pad and the rotating shaft. Therefore, the working performance of the compressor can be improved.

Additional aspects and advantages of the present invention will be set forth, in part, from the following description, and in part will be apparent from the following description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments taken in conjunction with the accompanying drawings, wherein:

1 is a schematic structural diagram of a bearing bush according to an embodiment of the present invention;

2 is a schematic structural diagram of a bearing bush according to an embodiment of the present invention;

3 is a schematic structural diagram of a bearing bush according to an embodiment of the present invention;

4 is a schematic structural diagram of a bearing bush according to an embodiment of the present invention.

Reference number:

Bearing 1, rotating shaft 2, clearance 3,

The main body 10 , the oil inlet groove 100 , the oil outlet groove 110 , the oil inlet hole 101 , the oil outlet hole 111 , and the oil inlet pipe 120 .

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to 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, only used to explain the present invention, and should not be construed as a limitation of the present invention.

In the description of the present invention, it should be understood that the terms "center", "length", "thickness", "upper", "lower", "left", "right", "inner", "outer", " The orientation or positional relationship indicated by "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and The description is simplified rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, features delimited with "first", "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

As shown in FIG. 2 , according to the bearing bush 1 of the embodiment of the present invention, the bearing bush 1 is sleeved on the rotating shaft 2 , and there is a gap 3 between the outer peripheral wall of the rotating shaft 2 and the bearing bush 1 . As shown in FIG. 1 to FIG. 4 , the bearing bush 1 includes a body portion 10 , the body portion 10 is cylindrical, and the body portion 10 is sleeved on the rotating shaft 2 . The body part 10 has an oil inlet groove 100 and an oil outlet groove 110 spaced apart from the oil inlet groove 100 . The body portion 10 has an oil inlet hole 101 and an oil outlet hole 111 , the oil inlet hole 101 communicates with the oil inlet groove 100 , and the oil outlet hole 111 communicates with the oil outlet groove 110 .

It can be understood that, as shown in FIG. 1 to FIG. 4 , the bearing bush 1 includes a body part 10 , the body part 10 is cylindrical, the two ends of the body part 10 are open, and the rotating shaft 2 can pass through the body part 10 . A gap 3 is formed between the outer peripheral wall of 2 and the inner peripheral wall of the bearing bush 1, the gap 3 can be filled with lubricating oil, and the lubricating oil can lubricate the assembly between the inner peripheral wall of the main body 10 and the outer peripheral wall of the rotating shaft 2, and the rotating shaft 2 Relative to the main body 10, which can be rotated (eg, self-propelled), the rotating shaft 2 will release heat during the rotation and transfer the heat to the lubricating oil, and the temperature of the lubricating oil will increase to form hot oil.

As shown in FIGS. 1 to 4 , the main body 10 may be provided with an oil inlet hole 101 and an oil inlet groove 100 , the oil inlet hole 101 is communicated with the oil inlet groove 100 , and the oil inlet groove 100 is communicated with the gap 3 , and the lubricating oil can pass through the oil inlet from the outside. The oil hole 101 flows into the oil inlet groove 100. The lubricating oil in the oil inlet groove 100 can flow into the gap 3 and exchange heat with the hot oil in the gap 3. The hot oil in the gap 3 can also flow into the oil inlet groove 100 and interact with the oil inlet groove 100. The lubricating oil in the gap 3 flows back to the gap 3 after heat exchange. In short, the new lubricating oil (referred to as new oil) flowing in from the oil inlet hole 101 can exchange heat with the hot oil in the gap 3, and the new oil after heat exchange The mixed oil with the hot oil can further exchange heat with the rotating shaft 2 , thereby reducing the temperature of the rotating shaft 2 and improving the working performance of the rotating shaft 2 .

As shown in FIGS. 1-4 , the main body 10 may be provided with an oil outlet hole 111 and an oil outlet groove 110. The oil outlet hole 111 communicates with the oil outlet groove 110, and the oil outlet groove 110 communicates with the gap 3. The main function of the oil outlet groove 110 is to Collect and drain hot oil. The hot oil can flow into the oil outlet groove 110 from the gap 3 , and then flow out of the bearing bush 1 from the oil outlet groove 110 through the oil outlet hole 111 . In addition, the impurities between the rotating shaft 2 and the bearing bush 1 can also flow to the oil outlet 110. The rotating shaft 2 rotates at a high speed in the bearing bush 1. If there are impurities in the gap 3, it will cause friction damage to the rotating shaft 2 and affect the rotating shaft 2. Performance, by arranging the oil outlet groove 110 , impurities can flow to the oil outlet groove 110 along with the hot oil or the rotating shaft 2 , so that the performance of the bearing bush 1 can be improved.

According to the bearing bush 1 of the embodiment of the present invention, the oil inlet groove 100 and the oil outlet groove 110 are provided, and the oil inlet groove 100 and the oil outlet groove 110 are distributed at intervals, so that the relative independence of the oil inlet and the oil outlet of the bearing bush 1 can be realized, so that the oil flows from the oil inlet groove 100 The new oil can be fully mixed with the hot oil in the gap 3, and the new oil can be fully heat exchanged with the hot oil, so that the temperature of the rotating shaft 2 can be effectively reduced. In addition, the hot oil and impurities around the rotating shaft 2 can flow out from the oil outlet groove 110 , and the oil outlet groove 110 can cooperate with the oil inlet groove 100 to form an oil supply cycle, so as to fully cool the rotating shaft 2 and improve the cleaning of the bearing bush 1 degree, which can further improve the lubricating effect between the bearing bush 1 and the rotating shaft 2.

According to some embodiments of the present invention, the oil inlet groove 100 is located downstream of the oil outlet groove 110 in the rotational direction of the rotating shaft 2 . For example, as shown in FIG. 2 , the rotation direction of the rotating shaft 2 is counterclockwise, and the oil inlet groove 100 is located on the left side of the oil outlet groove 110 (left as shown in FIG. 2 ). Therefore, the hot oil at the gap 3 can be collected at the oil outlet groove 110 and flow out from the oil outlet hole 111, so as to provide space for the supply of new oil, so that the new oil can fully cool the rotating shaft 2, and improve the efficiency of the new oil and the oil. The indirect heat exchange efficiency of the rotating shaft 2 can improve the working performance of the bearing bush 1 . Further, the oil inlet groove 100 is close to the oil outlet groove 110 . In this way, the action path and action time of the new oil and the hot oil can be extended, so that the action effect of the new oil and the hot oil can be improved.

As shown in FIGS. 1-3 , according to some embodiments of the present invention, the oil inlet grooves 100 and the oil outlet grooves 110 may be distributed along the circumferential direction of the body portion 10 . In other words, the oil inlet groove 100 and the oil outlet groove 110 may be located on the same ring. Therefore, the extension of the oil inlet groove 100 and the oil outlet groove 110 in the axial direction of the rotating shaft 2 can be facilitated, and the effect of the new oil and the hot oil can be improved.

According to some embodiments of the present invention, a part of the peripheral wall of the body part 10 may protrude toward the radially outer side of the rotating shaft 2 to configure the oil inlet and outlet grooves 100 and 110 . In other words, the oil inlet groove 100 and the oil outlet groove 110 can be directly formed on the body portion 10, and the oil inlet groove 100 can be formed by a part of the peripheral wall of the main body portion 10 that protrudes toward the radially outer side of the rotating shaft 2, that is, the part of the peripheral wall (ie the oil inlet groove The distance from the bottom wall of the body portion 100) to the central axis of the body portion 10 is greater than the radius of the body portion 10. The oil outlet groove 110 may be formed by another part of the peripheral wall of the main body part 10 that protrudes toward the radially outer side of the rotating shaft 2 , that is, the distance between this part of the peripheral wall (that is, the bottom wall of the oil outlet groove 110 ) and the central axis of the main body part 10 is greater than that of the main body part. 10 radius. Therefore, the arrangement of the oil inlet groove 100 and the oil outlet groove 110 is facilitated, and the structures of the oil inlet groove 100 and the oil outlet groove 110 are more stable.

As shown in FIGS. 1-2 , according to some embodiments of the present invention, the outer bottom wall surface of the oil inlet groove 100 may be an arc-shaped surface, and the outer bottom wall surface of the oil outlet groove 110 may be an arc-shaped surface. It can be understood that the surface of the oil inlet groove 100 protruding from the outer peripheral wall of the body portion 10 may be an arc surface, and the surface of the oil outlet groove 110 protruding from the outer peripheral wall of the main body portion 10 may also be an arc surface. Therefore, it is convenient to set the inner wall surface of the oil inlet groove 100 and the inner wall surface of the oil outlet groove 110 as arc-shaped surfaces, and the arc-shaped surfaces are smooth curved surfaces, which facilitates the flow of lubricating oil (such as hot oil and new oil), thereby improving the lubricating oil. fluidity and smoothness.

As shown in FIGS. 1 , 3 and 4 , according to some embodiments of the present invention, the oil inlet groove 100 may extend along the axial direction of the body portion 10 , and the oil outlet groove 110 may extend along the axial direction of the body portion 10 . For example, the oil inlet groove 100 can be formed long, and the length direction of the oil inlet groove 100 can extend along the axial direction of the main body portion 10 , and the oil outlet groove 110 can also be formed long, and the length direction of the oil outlet groove 110 can be formed along the main body portion 10 . extends in the direction of the axis. In this way, the action range of the new oil in the oil inlet groove 100 and the hot oil in the gap 3 can be increased, so that the hot oil in the gap 3 and in the axial direction can exchange heat with the new oil, so that the heat exchange efficiency can be improved. The temperature of the rotating shaft 2 can be sufficiently lowered. In addition, the hot oil in the gap 3 and in the axial direction can enter the oil outlet groove 110, so as to avoid the formation of blind spots for oil discharge during the rotation of the rotating shaft 2, that is, the hot oil at some positions cannot flow to the oil outlet groove 110, so that the bearing bush can be improved. 1 performance.

As shown in FIGS. 1-4 , according to some embodiments of the present invention, the oil inlet hole 101 is located on the peripheral wall on the radially outer side of the bearing bush 1 . It can be understood that an oil inlet hole 101 may be provided on the peripheral wall on the radially outer side of the bearing bush 1 , and the oil inlet hole 101 penetrates through the peripheral wall of the bearing bush 1 to communicate with the oil inlet groove 100 . For example, a part of the peripheral wall of the main body part 10 protrudes toward the radially outer side of the bearing bush 1 to form the oil inlet and outlet groove 100 , and a through hole can be opened on the part of the peripheral wall to form the oil inlet and outlet hole 101 . Thus, the arrangement of the oil inlet hole 101 can be facilitated. Further, the oil inlet hole 101 is close to the center of the oil inlet groove 100 . Thus, the new oil flowing in from the oil inlet hole 101 can flow into the oil inlet groove 100 uniformly and omnidirectionally. Furthermore, the bearing bush 1 may be provided with an oil inlet pipe 120 , one end of the oil inlet pipe 120 is communicated with the oil inlet hole 101 , and the lubricating oil can flow from the oil inlet pipe 120 to the oil inlet hole 101 . Therefore, it is convenient for the external lubricating oil to pass into the oil inlet hole 101 .

According to some embodiments of the present invention, in the axial direction of the rotating shaft 2 , the oil outlet hole 111 may pass through the side wall of the oil outlet groove 110 . It can be understood that the oil outlet holes 111 and the oil outlet grooves 110 are distributed along the axial direction of the rotating shaft 2 , the oil outlet holes 111 are located on the oil outlet groove 110 , and the oil outlet holes 111 pass through the side wall of the oil outlet groove 110 to realize the oil outlet holes. 111 communicates with the oil outlet 110. Therefore, the hot oil can flow out of the bearing bush 1 from the axial direction of the rotating shaft 2 , which facilitates the flow of the hot oil and the collection function of the oil outlet groove 110 .

As shown in FIG. 1 , FIG. 3 and FIG. 4 , according to some embodiments of the present invention, there may be a plurality of oil outlet holes 111 . For example, there may be two oil outlet holes 111 , and in the axial direction of the body portion 10 , the oil outlet holes 111 may be located on both sides of the oil outlet groove 110 . Thereby, the oil output efficiency can be improved, so that the fresh oil supply efficiency can be indirectly improved, and the heat exchange efficiency between the fresh oil and the hot oil can be further improved.

According to some embodiments of the present invention, both ends of the oil outlet groove 110 in the axial direction of the rotating shaft 2 are open ends, and the open ends are configured as oil outlet holes 111 . In other words, the oil outlet 110 may only be formed with a bottom wall, the side walls of the oil outlet 110 at both ends of the bottom wall may be open, and the hot oil in the oil outlet 110 may flow out from the opening. Therefore, the arrangement of the oil outlet hole 111 can be omitted, the process of setting the bearing bush 1 can be saved, and the production cost of the bearing bush 1 can be reduced.

According to some embodiments of the present invention, there may be multiple oil inlet slots 100 and multiple oil outlet slots 110 , and the multiple oil inlet slots 100 correspond to the multiple oil outlet slots 110 one-to-one. It can be understood that, the body portion 10 may be provided with a plurality of oil inlet grooves 100 , and each oil inlet groove 100 has a corresponding oil outlet groove 110 for matching with it. Thereby, the heat exchange rate between the new oil and the hot oil can be increased, and the temperature of the rotating shaft 2 can be cooled more effectively. Further, the plurality of oil inlet grooves 100 may be uniformly distributed along the circumferential direction of the bearing bush 1 or distributed in an array with unequal intervals.

The sliding bearing assembly according to the embodiment of the present invention includes a bearing pad, and the bearing pad is the bearing pad 1 as described above.

According to the sliding bearing assembly of the embodiment of the present invention, the oil inlet groove 100 and the oil outlet groove 110 are provided, and the oil inlet groove 100 and the oil outlet groove 110 are distributed at intervals, so that the relative independence of the oil inlet and the oil outlet of the bearing bush 1 can be realized, so that the oil inlet groove 100 can The inflowing new oil can be fully mixed with the hot oil with a high temperature at the periphery of the rotating shaft 2, and the new oil can be sufficiently heat-exchanged with the hot oil, so that the temperature of the rotating shaft 2 can be effectively lowered. In addition, the mixture and impurities of hot oil and new oil on the periphery of the rotating shaft 2 can flow out from the oil outlet groove 110, so that it can cooperate with the oil inlet groove 100 to form a circulation, and can also improve the cleanliness in the bearing bush 1, thereby improving the bearing bush 1 and the rotation. The lubrication effect between the shafts 2 can improve the working performance of the sliding bearing assembly.

It should be noted that, the bearing bush 1 can be used independently, and can also be used in the case where the radial bearing and the thrust bearing are coupled on one bearing body.

The compressor according to the embodiment of the present invention includes a sliding bearing assembly, and the sliding bearing assembly is the sliding bearing assembly as described above.

According to the compressor of the embodiment of the present invention, the oil inlet groove 100 and the oil outlet groove 110 are provided, and the oil inlet groove 100 and the oil outlet groove 110 are distributed at intervals, so that the relative independence of the oil inlet and the oil outlet of the bearing bush 1 can be realized, so that the oil flow from the oil inlet groove 100 flows into the compressor. The new oil can be fully mixed with the hot oil with a high temperature on the periphery of the rotating shaft 2, and the new oil can be fully heat exchanged with the hot oil, so that the temperature of the rotating shaft 2 can be effectively reduced. In addition, the mixture and impurities of hot oil and new oil on the periphery of the rotating shaft 2 can flow out from the oil outlet groove 110, so that it can cooperate with the oil inlet groove 100 to form a circulation, and can also improve the cleanliness in the bearing bush 1, thereby improving the bearing bush 1 and the rotation. The lubrication effect between the shafts 2 can improve the working performance of the compressor.

The bearing bush 1 according to the embodiment of the present invention will be described in detail below with reference to FIGS. 1-4 . It is to be understood that the following description is merely illustrative and not specific to the limitation of the present invention.

As shown in FIGS. 1 to 4 , the bearing bush 1 includes a body portion 10 , the body portion 10 is cylindrical, the body portion 10 can be sleeved on the rotating shaft 2 , and there is a gap between the outer peripheral wall of the rotating shaft 2 and the inner peripheral wall of the body portion 10 3. An oil inlet groove 100 and an oil outlet groove 110 are provided on the outer peripheral wall of the main body portion 10 . Both the oil inlet groove 100 and the oil outlet groove 110 are buckled on the outer peripheral wall of the main body portion 10 . The side end surfaces are connected to the outer peripheral wall of the main body portion 10 . The oil outlet groove 110 is opened toward the main body portion 10 , and the end surface of the oil outlet groove 110 on the open side is connected to the outer peripheral wall of the main body portion 10 . The oil inlet groove 100 and the oil outlet groove 110 are distributed along the circumferential direction of the body portion 10 , and the oil inlet groove 100 and the oil outlet groove 110 are spaced apart. The oil inlet groove 100 penetrates the outer peripheral wall of the main body 10 , the oil inlet groove 100 communicates with the gap 3 , the oil outlet groove 110 penetrates the outer peripheral wall of the main body 10 , and the oil outlet groove 110 communicates with the gap 3 . In the rotation direction of the rotating shaft 2 , the oil inlet groove 100 is located downstream of the oil outlet groove 110 , and the oil inlet groove 100 is close to the oil outlet groove 110 . The oil inlet groove 100 extends along the axial direction of the main body portion 10 , and the oil outlet groove 110 extends along the axial direction of the main body portion 10 . The outer bottom wall of the oil inlet tank 100 is an arc surface, and the arc surface is provided with an oil inlet hole 101 . The outer bottom wall surface of the oil outlet 110 is an arc surface, and two side walls of the oil outlet 110 are provided with an oil outlet 111. Each oil outlet 111 can pass through its corresponding side wall surface. The oil outlet 110 is communicated.

According to the bearing bush 1 of the embodiment of the present invention, the oil inlet groove 100 and the oil outlet groove 110 are provided, and the oil inlet groove 100 and the oil outlet groove 110 are distributed at intervals, so that the relative independence of the oil inlet and the oil outlet of the bearing bush 1 can be realized, so that the oil flows from the oil inlet groove 100 The new oil can be fully mixed with the hot oil in the gap 3, and the new oil can be fully heat exchanged with the hot oil, so that the temperature of the rotating shaft 2 can be effectively reduced. In addition, the hot oil and impurities on the periphery of the rotating shaft 2 can flow out from the oil outlet groove 110, which can cooperate with the oil feeding groove 100 to form an oil supply cycle, fully cool the rotating shaft 2, and improve the cleanliness of the bearing bush 1, which can further Improve the lubrication effect between the bearing bush 1 and the rotating shaft 2.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples", etc., is meant to incorporate the embodiments A particular feature, structure, material, or characteristic described by an example or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, The scope of the invention is defined by the claims and their equivalents.

Claims (9)

1. A bearing pad, characterized in that, the bearing pad is sleeved on a rotating shaft, and there is a gap between the outer peripheral wall of the rotating shaft and the bearing pad, and the bearing pad comprises: a body part, the body part is cylindrical, the body part is sleeved on the rotating shaft, the body part has an oil inlet groove and an oil outlet groove spaced apart from the oil inlet groove, and the oil inlet groove communicates with the gap In order to supply oil into the gap, the oil outlet groove is communicated with the gap to discharge the oil in the gap, the body part has an oil inlet hole and an oil outlet hole, and the oil inlet hole is connected to the the oil groove is communicated, and the oil outlet hole is communicated with the oil outlet groove; In the rotation direction of the rotating shaft, the oil inlet groove is located downstream of the oil outlet groove; the oil inlet groove extends along the axis direction of the body portion, and the oil outlet groove extends along the axis direction of the body portion; A part of the peripheral wall of the main body part protrudes toward the radially outer side of the rotating shaft to configure the oil inlet groove and the oil outlet groove; The outer bottom wall surface of the oil inlet groove is an arc-shaped surface, and the outer bottom wall surface of the oil outlet groove is an arc-shaped surface. 2 . The bearing bush according to claim 1 , wherein the oil inlet groove and the oil outlet groove are distributed along the circumferential direction of the body portion. 3 . 3 . The bearing bush according to claim 1 , wherein the oil inlet hole is located on a peripheral wall of the radial outer side of the bearing bush. 4 . 4 . The bearing bush according to claim 1 , wherein in the axial direction of the rotating shaft, the oil outlet hole penetrates the side wall of the oil outlet groove. 5 . 5 . The bearing bush according to claim 1 , wherein there are a plurality of the oil outlet holes. 6 . 6 . The bearing bush according to claim 1 , wherein both ends of the oil outlet groove in the axial direction of the rotating shaft are open ends, and the open ends are configured as the oil outlet holes. 7 . 7 . The bearing bush according to claim 1 , wherein there are a plurality of oil inlet grooves and a plurality of oil outlet grooves, and the plurality of oil inlet grooves are in one-to-one correspondence with the plurality of oil outlet grooves. 8 . 8. A sliding bearing assembly, characterized in that it comprises: The bearing bush is the bearing bush according to any one of claims 1-7. 9. A compressor, characterized in that, comprising: A sliding bearing assembly, the sliding bearing assembly is the sliding bearing assembly according to claim 8 .

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