1. A bearing lubrication assembly, comprising:

the bearing seat is provided with a filling groove on the inner peripheral wall;

the oil absorption structure is arranged in the filling groove, is used for adsorbing lubricating oil, can expand in volume after adsorbing the lubricating oil, and can release the lubricating oil when being compressed;

the bearing is arranged in the bearing seat, the bearing is provided with an oil passing hole, and the bearing can extrude the oil absorption structure to enable the oil absorption structure to release lubricating oil and flow into the dynamic and static combination part at the inner side of the bearing through the oil passing hole.

2. The bearing lubrication assembly as claimed in claim 1, wherein said filling groove is an annular groove formed extending in a circumferential direction of an inner circumferential wall of said housing;

the filling grooves are distributed along the radial direction of the bearing seat.

3. The bearing lubrication assembly of claim 2, wherein the oil passing holes are evenly distributed on the bearing side wall.

4. The bearing lubrication assembly of claim 1, further comprising:

the rotating shaft is rotatably arranged in the bearing in a penetrating way;

the elastic sheet comprises a mounting part and an elastic part, the mounting part is positioned in the filling groove, the elastic sheet is arranged at the outer side of the oil absorption structure, the elastic part can extrude the oil absorption structure,

the bearing is provided with the oil passing hole at least at the position corresponding to the filling groove, and the elastic part can pass through the oil passing hole and abut against the rotating shaft.

5. The bearing lubrication assembly of claim 4, wherein said mounting portion is integrally formed with said resilient portion, said mounting portion forming an included angle with said resilient portion,

the installation part is used for being fixedly connected to the side wall of the filling groove.

6. The bearing lubrication assembly as claimed in claim 5, wherein the sidewall of the rotating shaft is formed with a cut surface,

the elastic part can abut against the tangent plane, and when the rotating shaft rotates, the elastic part can periodically contact with the tangent plane.

7. The bearing lubrication assembly as claimed in claim 6, wherein the cut surface is a surface formed on the mating portion of the rotating shaft and the bearing and having the same axial dimension as the bearing, or,

the tangent plane is the bottom wall face of the groove formed at the matching part of the rotating shaft and the bearing.

8. The bearing lubrication assembly of claim 7, wherein the tangent plane is a flat plane or an arc-shaped plane formed along a circumferential direction of the rotating shaft.

9. The bearing lubrication assembly of any one of claims 4-8, wherein said spring plate is disposed one or more in a circumferential direction of said filling groove,

each spring plate corresponds to one oil passing hole.

10. A compressor comprising a bearing lubrication assembly as claimed in any one of claims 1 to 9.

11. A compressor comprising a bearing lubrication assembly as claimed in any one of claims 4 to 9, said shaft constituting a crankshaft of said compressor.

12. The compressor according to claim 11, wherein a central oil hole is formed in the crankshaft in an axial direction, and a radial oil hole communicating with the central oil hole is provided at a portion of the crankshaft where the bearing is engaged, and lubricating oil is allowed to flow between the crankshaft and the bearing through the central oil hole and the radial oil hole.

Background

The scroll compressor mainly comprises an orbiting scroll assembly, a fixed scroll assembly, a crankshaft assembly, an upper bracket assembly, a lower bracket assembly, a shell and a motor, and has the characteristics of simple structure, small volume, light weight, low noise, high mechanical efficiency, stable operation and the like. The movable and static vortex discs have vortex teeth, and are eccentric for certain distance and meshed together with 180 deg phase difference to form compression cavity for compressing refrigerant. The bent axle is the rotating part of scroll compressor, and is the eccentric shaft, and the bent axle rotates under the drive of motor, and bent axle eccentric part is connected with the driving disk, drives the driving disk translation under the combined action with the cross sliding ring, and wherein the effect of cross sliding ring prevents to move the rotation of scroll, and the bent axle drives the driving disk periodic motion and realizes compression chamber volume periodic variation, accomplishes the compression chamber and breathes in, compresses, the overall process of exhausting.

During the rotation of the crankshaft, the unbalanced mass of the movable disc and the eccentric part and the unbalance of the centrifugal force and the centrifugal moment of the parts on the shafting assembly can generate friction and friction power consumption with the radial contact surface of the shafting, and the radial support surface of the crankshaft is mainly contacted with the upper bracket bearing and the lower bracket bearing. And from the beginning of the compressor starting to work, the lubricating oil of the compressor reaches the radial oil outlet hole of the main and auxiliary shafts of the crankshaft from the oil pool at the bottom of the compressor through the central oil hole of the crankshaft under the action of the oil pump, thereby reaching the contact surfaces of the crankshaft and the bearing of the upper and lower brackets,

the conventional compressor lubricates an oil way of a bearing, lubricating oil moves upwards from a bottom oil pool through an oil hole in the center of a crankshaft and reaches the positions of upper and lower support bearings through radial oil outlet holes to reach the positions between the crankshaft and the bearing, the flowing path of the lubricating oil is long, the bearing is in an oil shortage state in the period from the moment when the compressor is just started to the moment when the lubricating oil reaches the position of the bearing, at the moment, the friction between the bearing and the crankshaft is large, the crankshaft is easy to wear when the compressor is frequently started and stopped for a long time, the friction power consumption of the compressor is large, and the performance is reduced.

Disclosure of Invention

In view of this, the present invention provides a bearing lubrication assembly and a compressor including the same, which are at least used for solving the technical problem of untimely bearing lubrication in the prior art, and specifically:

in a first aspect, the present invention provides a bearing lubrication assembly comprising:

the bearing seat is provided with a filling groove on the inner peripheral wall;

the oil absorption structure is arranged in the filling groove, is used for adsorbing lubricating oil, can expand in volume after adsorbing the lubricating oil, and can release the lubricating oil when being compressed;

the bearing is arranged in the bearing seat, the bearing is provided with an oil passing hole, and the bearing can extrude the oil absorption structure to enable the oil absorption structure to release lubricating oil and flow into the dynamic and static combination part at the inner side of the bearing through the oil passing hole.

Further optionally, the filling groove is an annular groove formed along the circumferential extension of the inner circumferential wall of the bearing seat;

the filling grooves are distributed along the radial direction of the bearing seat.

Further optionally, a plurality of the oil passing holes are uniformly distributed on the side wall of the bearing.

Further optionally, the bearing lubrication assembly further comprises:

the rotating shaft is rotatably arranged in the bearing in a penetrating way;

the elastic sheet comprises a mounting part and an elastic part, the mounting part is positioned in the filling groove, the elastic sheet is arranged at the outer side of the oil absorption structure, the elastic part can extrude the oil absorption structure,

the bearing is provided with the oil passing hole at least at the position corresponding to the filling groove, and the elastic part can pass through the oil passing hole and abut against the rotating shaft.

Further optionally, the mounting portion is integrally formed with the elastic portion, an included angle is formed between the mounting portion and the elastic portion,

the installation part is used for being fixedly connected to the side wall of the filling groove.

Further optionally, a tangent plane is formed on the side wall of the rotating shaft,

the elastic part can abut against the tangent plane, and when the rotating shaft rotates, the elastic part can periodically contact with the tangent plane.

Further alternatively, the cut surface is a surface formed on the mating portion of the rotating shaft and the bearing and having the same axial dimension as the bearing, or,

the tangent plane is the bottom wall face of the groove formed at the matching part of the rotating shaft and the bearing.

Further optionally, the tangent plane is a plane, or the tangent plane is an arc-shaped plane formed along the circumferential direction of the rotating shaft.

Further optionally, one or more elastic sheets are arranged along the circumferential direction of the filling groove,

each spring plate corresponds to one oil passing hole.

In a second aspect, the present invention provides a compressor comprising the above bearing lubrication assembly.

In a third aspect, the present invention provides a compressor comprising the above bearing lubrication assembly, wherein the rotating shaft constitutes a crankshaft of the compressor.

Further alternatively, a central oil hole is formed in the crankshaft in the axial direction, and a radial oil hole communicating with the central oil hole is provided at a portion where the crankshaft is fitted to the bearing, through which lubricating oil can be made to flow between the crankshaft and the bearing.

According to the invention, the filling groove is arranged at the bearing seat to fill the oil absorption structure, the oil absorption structure is used for absorbing enough lubricating oil, and the lubricating oil is released by matching with the extrusion of the bearing or the elastic sheet, so that the lubricating oil can be rapidly released to lubricate the bearing when the compressor is just started, the abrasion and the friction power consumption at the bearing are reduced, and the performance is improved.

Drawings

The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely some embodiments of the present disclosure, and other drawings may be derived from those drawings by those of ordinary skill in the art without inventive effort.

FIG. 1 shows a schematic cross-sectional view of a compressor in accordance with an embodiment of the present invention;

FIG. 2 is a schematic view of a bearing lubrication assembly according to an embodiment of the present invention (spring plate is in contact with a tangent plane);

FIG. 3 is a schematic structural diagram of a bearing lubrication assembly according to an embodiment of the present invention (the spring plate does not contact the tangent plane);

FIG. 4 shows a schematic cross-sectional view of a bearing housing of an embodiment of the invention;

FIG. 5 shows a schematic cross-sectional view of a bearing housing according to another embodiment of the invention;

FIG. 6 is a schematic structural diagram of a rotating shaft according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a spring plate according to an embodiment of the invention;

FIG. 8 shows a schematic structural view of a bearing according to an embodiment of the present invention;

fig. 9 shows a schematic structural view of a bearing according to another embodiment of the present invention.

In the figure:

1. an upper cover; 2. a fixed scroll; 3. a movable scroll; 4. a cross slip ring; 5. an upper bracket; 6. a crankshaft; 7. a primary counterbalance; 8. a motor rotor; 9. a stator; 10. a housing; 11. a secondary counterbalance; 12. a lower bracket; 13. a lower support ring; 14. a lower cover; 15. an oil pump; 18. a bearing; 20. an oil absorbing structure; 21. filling the groove; 22. a spring plate; 23. a central oil hole; 24. a radial oil hole; 25. cutting into noodles; 181. an oil passing hole; 51. a bearing seat; 221. an installation part; 222. an elastic part.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and "a" and "an" generally include at least two, but do not exclude at least one, unless the context clearly dictates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.

According to the invention, the filling groove is arranged at the bearing seat to fill the oil absorption structure, the oil absorption structure is used for absorbing enough lubricating oil, and the lubricating oil is released by matching with the extrusion of the bearing or the elastic sheet, so that the lubricating oil can be rapidly released to lubricate the bearing when the compressor is just started, the abrasion and the friction power consumption at the bearing are reduced, and the performance is improved. The invention is described in detail below with reference to specific examples:

as shown in fig. 2-9, the present invention provides a bearing lubrication assembly comprising:

a bearing seat 51, wherein a filling groove 21 is arranged on the inner peripheral wall of the bearing seat 51;

the oil absorption structure 20 is arranged in the filling groove 21, is used for absorbing lubricating oil, can expand in volume after absorbing the lubricating oil, and can release the lubricating oil when being compressed;

the bearing 18 is arranged in a bearing 18 seat, the bearing 18 is provided with an oil passing hole 181, the bearing 18 can extrude the oil absorption structure 20, and lubricating oil released by the oil absorption structure 20 can flow into a dynamic and static joint at the inner side of the bearing 18 through the oil passing hole 181.

Preferably, as shown in fig. 4, the filling groove 21 is an annular groove formed to extend along the circumferential direction of the inner circumferential wall of the bearing 18 seat, at least one filling groove 21 is distributed along the radial direction of the bearing seat 51, and the oil suction structure 20 is an annular structure and is embedded in the filling groove 21. At least after oil absorption expansion, the oil absorption structure can partially extend out of the filling groove 21, namely, the oil absorption structure 20 can abut against the outer wall of the bearing 18 after oil absorption expansion, and the bearing 18 is stressed to generate small displacement, namely, the oil absorption structure 20 can be extruded to release lubricating oil.

In other embodiments, as shown in fig. 5, the filling groove 21 may be a plurality of linear grooves parallel to the axis of the bearing seat 51, or a plurality of discontinuous arc-shaped grooves formed along the circumferential direction of the bearing seat 51, and the shape of the oil absorbing structure 20 may correspond to the filling groove 21 so as to be able to be fitted into the filling groove 21.

Preferably, the oil absorbing structure 20 is a foam or resin material, such as a polyurethane foam material, and the specific type of the oil absorbing structure 20 is not limited in this embodiment, as long as it has certain elasticity, can absorb lubrication, and has certain high temperature resistance.

In the first embodiment of the present invention, as shown in fig. 9, the oil passing holes 181 are circular through holes, and a plurality of oil passing holes are uniformly distributed on the side wall of the bearing 18, so that the lubricating oil can uniformly flow into the inside of the bearing 18.

In a second embodiment, as shown in fig. 2 and 3, the bearing lubrication assembly further comprises:

the rotating shaft is rotatably arranged in the bearing 18 in a penetrating way, the rotating shaft and the bearing 18 are combined statically and dynamically, and the rotating shaft can rotate relative to the bearing 18;

the elastic sheet 22, as shown in fig. 7, includes a mounting portion 221 and an elastic portion 222, the mounting portion 221 is located in the filling groove 21, as shown in fig. 8, at least a position corresponding to the filling groove 21 on the bearing 18 is provided with an oil passing hole 181, the elastic portion 222 can pass through the oil passing hole 181 and abut against the rotating shaft, and when the rotating shaft rotates, the elastic portion 222 can be pressed to make it elastically deform, so that the oil suction structure 20 is pressed by the elastic portion 222 to make the oil suction structure 20 release the lubricating oil.

As shown in fig. 7, the mounting portion 221 is formed integrally with the elastic portion 222, an included angle is formed between the mounting portion 221 and the elastic portion 222, the mounting portion 221 is used for being fixedly connected to a side wall of the filling groove 21, preferably, the mounting portion is fixed by bonding, screws or the like, and the included angle is formed between the elastic portion 222 and the mounting portion 221 so that the elastic portion 222 can extend to the front side of the opening of the filling groove 21, and thus the oil suction structure 20 can be pressed when the elastic portion 222 is elastically deformed by pressurization.

Preferably, the mounting portion 221 may also be configured as a bending structure, for example, as a three-segment structure, which may be embedded into the filling groove 21 and respectively attached to two side walls and a bottom wall of the filling groove 21, and the three-segment structure may be fastened and fixed with the filling groove 21, so that the mounting of the elastic sheet 22 is more convenient. One or more elastic sheets 22 are arranged along the circumferential direction of the filling groove 21, and each elastic sheet 22 corresponds to one oil passing hole 181.

The oil absorption structure 20 is embedded into the filling groove 21, and a part of the oil absorption structure 20 is located on the inner side of the elastic sheet 22 and is attached to the elastic sheet 22.

At least a part of the oil passing holes 181 of the bearing 18 are disposed corresponding to the elastic pieces 22, and the elastic portion 222 can pass through the oil passing holes 181 to contact the rotating shaft, for example, the oil passing holes 181 corresponding to the elastic pieces 22 can be disposed as rectangular holes, one oil passing hole 181 is disposed corresponding to each elastic piece 22, preferably, the oil passing holes 181 can be disposed at positions of the bearing 18 not corresponding to the elastic pieces 22, and the shapes of the oil passing holes 181 at other positions are not limited.

As shown in fig. 6, preferably, the sidewall of the rotating shaft is formed with a cut surface 25, the elastic portion 222 can abut against the cut surface 25, when the rotating shaft rotates, the elastic portion 222 can periodically contact with the cut surface 25, when the elastic piece 22 contacts with the cut surface 25, the elastic piece is in an extended state, and when the elastic piece contacts with other parts, the elastic piece is in a compressed state, and the oil-absorbing structure 20 can be squeezed to release the lubricating oil.

Preferably, the tangent plane 25 is a plane formed on the matching part of the rotating shaft and the bearing 18 and having the same axial size as the bearing 18, that is, the tangent plane 25 completely covers the matching part of the rotating shaft and the bearing 18 in the length direction; alternatively, the cut surface 25 is a bottom wall surface of a groove formed at a portion where the rotating shaft is engaged with the bearing 18, that is, the cut surface 25 is formed only at a position corresponding to the resilient piece 22.

Further, the tangent plane 25 is the plane, can provide bigger space for the shell fragment 22 is flexible, perhaps tangent plane 25 is the arcwall face along the circumference formation of pivot, and is more smooth when making shell fragment 22 slide.

The invention also provides a compressor, which comprises the bearing lubricating assembly, wherein the rotating shaft forms a crankshaft 6 of the compressor, preferably, the compressor is a scroll compressor, a central oil hole 23 is formed in the crankshaft 6 along the axial direction, a radial oil hole 24 communicated with the central oil hole 23 is arranged at the part where the crankshaft 6 is matched with the bearing 18, and lubricating oil can flow between the crankshaft 6 and the bearing 18 through the central oil hole 23 and the radial oil hole 24. In particular, the amount of the solvent to be used,

as shown in fig. 1, the compressor includes a shell composed of a shell 10 and an upper cover 1 and a lower cover 14 covering both ends of the shell 10, in which a fixed scroll 2, a movable scroll 3, a oldham ring 4, an upper bracket 5, a crankshaft 6, a main balance weight 7 are provided, the motor rotor 8, the stator 9, the casing 10, vice balancing piece 11, the lower carriage 12, lower support ring 13, upper bracket 5 is fixed on casing 10 through eight spot welding modes, form bearing frame 51 on the upper bracket 5, the mutual interlock of quiet vortex dish 2 and movable vortex dish 3 is installed on upper bracket 5, movable vortex dish 3 and quiet vortex dish 2 intermeshing form a series of mutual independence and cut the airtight appearance chamber of crescent that the volume shape changed, quiet vortex dish 2 is fixed on upper bracket 5 through the screw firmware, lower carriage 12 is locked with lower support ring 13 through the screw, lower support ring 13 passes through the welding point and fixes on casing 10. The oil pump 15 is disposed at the bottom for pumping the lubricating oil pump 15 into the central oil hole 23 of the crankshaft 6 to lubricate the mating portion of the crankshaft 6 and the bearing 18.

When the compressor runs, the motor rotor 8 drives the crankshaft 6 to rotate, the eccentric part crank of the crankshaft 6 drives the movable scroll 3, the cross slip ring 4 limits the rotation of the movable scroll 3, and the movable scroll 3 translates around the center of the crankshaft 6 with a fixed radius.

Preferably, when the compressor is started, the crankshaft 6 drives the bearing 18 to displace a certain amount, and the compression oil suction structure 20 releases the lubricating oil to lubricate between the crankshaft 6 and the bearing 18.

A filling groove 21 is formed in a bearing seat 51, an elastic sheet 22 is installed in the filling groove 21, a lubricating oil absorption structure 20 is filled in the filling groove 21, an oil passing hole 181 is formed in a bearing 18, the oil absorption structure 20 absorbs enough lubricating oil and then expands to just fill the annular filling groove 21, the tangent plane 25 of the crankshaft 6 is opposite to the elastic sheet 22, and the elastic sheet 22 is located in a space where the tangent plane 25 is avoided and is not extruded. When the compressor is not started, the elastic sheet 22 is over against the tangent plane 25 of the main shaft of the crankshaft 6, when the lubricating oil absorption structure 20 is filled, the lubricating oil absorption structure 20 is required to absorb enough saturated lubricating oil, and the oil absorption structure 20 is expanded after absorbing enough lubricating oil and then is filled in the oil passing hole 181 on the bearing 18. When the compressor is just started, the tangent plane 25 of the crankshaft 6 is opposite to the elastic sheet 22, the elastic sheet 22 is not extruded, after the operation, the rotating tangent plane 25 of the crankshaft 6 rotates to other positions, the curved surface of the main shaft of the crankshaft 6 begins to extrude the elastic sheet 22, lubricating oil in the oil absorption structure 20 can be extruded out instantly under the extrusion action of the elastic sheet 22 to flow between the crankshaft 6 and a bearing, the instant lubrication effect is achieved, and the lubricating oil in the oil absorption structure 20 can shrink after being extruded out. After the compressor runs for a period of time, the oil supply amount of the central oil hole 23 and the radial oil hole 24 of the crankshaft 6 is enough to ensure that the bearing 18 is lubricated, the sufficient lubricating oil can enable the lubricating oil adsorption expansion material to adsorb the lubricating oil which is saturated enough again, the bearing 18 can be quickly lubricated again when the compressor is started and stopped next time, and the effect that the bearing 18 can be quickly lubricated when the compressor is started every time is achieved. The friction power consumption at the bearing 18 is reduced, and the performance of the compressor is improved.

Preferably, a bearing seat is also formed on the lower bracket 12, and since the lower bracket 12 is closer to the oil pump 15, the lubricating oil can be obtained more quickly, and a bearing lubricating assembly may not be provided, and of course, in order to further improve the reliability of the lubricating, the bearing lubricating assembly may also be provided on the lower bracket 12 at the same time.

In an alternative embodiment of the invention, the filling groove can be arranged along the axial direction, or the cross section of the filling groove is other forms except for a round form and a square form; the hole opening mode on the bearing can be changed, or a sectional bearing is used; or the elastic sheet is changed into other elastic structures such as a spring.

Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.