CN112032042A

CN112032042A - Oil pumping assembly, compressor and air conditioning unit

Info

Publication number: CN112032042A
Application number: CN202010898205.1A
Authority: CN
Inventors: 李亚荣; 黄传顺; 徐敏; 严耀宗; 朱咏杰
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai; Zhuhai Gree Energy Saving Environmental Protection Refrigeration Technology Research Center Co Ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2020-12-04

Abstract

The application provides an oil pumping assembly, a compressor and an air conditioning unit. Wherein, the pump oil subassembly includes the oil feed sleeve and sets up the spiral oil pump in the oil feed sleeve, and the oil feed sleeve links to each other with the pivot of compressor, and fixed the setting in the spiral oil pump is provided with three spiral line structures on the lateral wall of spiral oil pump, and the length direction spiral of spiral oil pump is followed to the spiral line structure coils. By applying the technical scheme of the invention, the oil pumping effect can be improved firstly through the three spiral line structures, secondly, the three spiral line structures can play a role in guiding the rising of lubricating oil due to different distribution directions, and the three spiral line structures can prevent the lubricating oil from leaking from different angles when the compressor runs at low frequency, so that the technical problem of poor oil pumping effect at low rotating speed of the oil pumping device of the compressor in the prior art is solved. In addition, when the compressor runs at high frequency, lubricating oil is oiled through the three-spiral-line structure, so that the lubricating oil can be lubricated from different flow directions.

Description

Oil pumping assembly, compressor and air conditioning unit

Technical Field

The invention relates to the technical field of compressors, in particular to an oil pumping assembly, a compressor and an air conditioning unit.

Background

At present, a centrifugal oil pump is adopted for lubrication of a piston compressor, but the oil pumping capacity of the centrifugal pump is limited, the problem of overlarge oil supply is easily caused under the condition of high-speed rotation of a motor, too much oil is pumped, lubricating oil is wasted, the liquid level of an oil pool is reduced, and a large amount of lubricating oil needs to be injected. When the centrifugal pump operates at low frequency, the pump oil height of the centrifugal pump is reduced, and some parts can not be lubricated, so that the compressor can not work normally.

In order to solve the above technical problem, the prior art provides a technical solution for adaptive oil supply. As shown in fig. 1 and 2, an oil supply unit 1 is installed on a rotating shaft 2 of the compressor, and includes an oil supply sleeve 3 and a spiral oil pump 4 installed in the oil supply sleeve 3, and the spiral oil pump 4 is fixedly connected to a holder 5 fixedly installed in the compressor. The rotating shaft 2 drives the oil supply sleeve 3 to rotate relative to the spiral oil pump 4, so that lubricating oil is pumped to the rotating shaft 2.

The problem of the not enough oil that centrifugal oil pump exists can be solved to foretell technical scheme, but this structure of pumping lubricating oil is when the pivot low-speed operation, and the pump oil is overcoming the gravity of lubricating oil after, and the pump oil effect is not good, leads to easily to oiling not enough.

Disclosure of Invention

The embodiment of the invention provides an oil pumping assembly, a compressor and an air conditioning unit, and aims to solve the technical problem that an oil pumping device of the compressor in the prior art is poor in low-rotating-speed oil pumping effect.

The embodiment of the application provides an oil pumping assembly, including fuel feeding sleeve and the spiral oil pump of setting in fuel feeding sleeve, one of fuel feeding sleeve and spiral oil pump is used for linking to each other with the pivot of compressor, and another fixed setting among fuel feeding sleeve and the spiral oil pump is provided with many spiral line structures on the lateral wall of spiral oil pump, and the length direction spiral of spiral oil pump is followed to the spiral line structure.

In one embodiment, the plurality of spiral structures are equiangularly spaced.

In one embodiment, the spiral structure is three or more than three.

In one embodiment, the number of the spiral line structures is three, and the three spiral line structures are uniformly distributed at intervals of 120 degrees.

In one embodiment, the number of the spiral line structures is four, and the four spiral line structures are uniformly distributed at intervals of 90 degrees.

In one embodiment, the cross-section of the spiral structure is trapezoidal, rectangular, triangular, or fan-shaped.

In one embodiment, the spiral oil pump is provided with an oil storage tank, and the oil storage tank is communicated with a space where a rotating shaft of the compressor is located.

In one embodiment, the oil reservoir is a polygonal prism structure.

In one embodiment, the oil reservoir is a hexagonal prism structure.

In one embodiment, the oil supply sleeve is connected to a rotating shaft of the compressor, and the screw oil pump is fixedly arranged in the oil supply sleeve.

In one embodiment, the bottom of the spiral oil pump is formed with an embedded structure, and the embedded structure is used for being fixedly connected with the hook wire.

In one embodiment, the inset structure is in the shape of a straight line or cross.

In one embodiment, the bottom of the spiral oil pump is provided with a limiting structure, and the limiting structure is used for being matched with the bottom of the oil supply sleeve to stop the spiral oil pump from moving upwards.

The application also provides a compressor, which comprises the oil pumping assembly, wherein the oil pumping assembly is the oil pumping assembly.

The application also provides an air conditioning unit, which comprises a compressor, wherein the compressor is the compressor.

In the above-mentioned embodiment, can promote the pump oil effect at first through three spiral line structures, and secondly three spiral line structures are because the distribution direction is different, can also play the guide effect to the rising of lubricating oil, and when compressor low frequency operation, three spiral line structures prevent from the different angles that lubricating oil from leaking, just so solve the not good technical problem of low rotational speed pump oil effect that the pump oil device of compressor exists among the prior art. In addition, when the compressor runs at high frequency, lubricating oil is oiled through the three-spiral-line structure, so that the lubricating oil can be lubricated from different flow directions.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a partial structural schematic view of a compressor according to the prior art;

FIG. 2 is a cross-sectional structural schematic view of an oil supply assembly of the compressor of FIG. 1;

FIG. 3 is a partial schematic view of a first embodiment of a compressor according to the present invention;

FIG. 4 is a cross-sectional structural schematic view of an oil supply sleeve and a screw oil pump of the compressor of FIG. 3;

FIG. 5 is a schematic perspective view of a screw oil pump of the compressor of FIG. 3;

FIG. 6 is a schematic top view of the screw oil pump of FIG. 5;

FIG. 7 is a schematic bottom view of the screw oil pump of FIG. 5;

FIG. 8 is a schematic perspective view of another screw oil pump of the compressor of FIG. 3;

FIG. 9 is a cross-sectional structural schematic view of the screw oil pump of FIG. 8;

FIG. 10 is a schematic bottom view of the screw oil pump of FIG. 8;

fig. 11 is a schematic structural view of a screw oil pump of the compressor of fig. 3 fixed by a hook wire.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.

As shown in fig. 3, 4 and 5, the oil pumping assembly of the present invention provides an embodiment in which the oil pumping assembly includes an oil supply sleeve 10 and a spiral oil pump 20 disposed inside the oil supply sleeve 10, the oil supply sleeve 10 is connected to a rotating shaft of a compressor, the spiral oil pump 20 is fixedly disposed inside, three spiral line structures 21 are disposed on a side wall of the spiral oil pump 20, and the spiral line structures 21 are spirally wound along a length direction of the spiral oil pump 20.

By applying the technical scheme of the invention, the oil pumping effect can be firstly improved through the three spiral line structures 21, then the three spiral line structures 21 can play a role in guiding the rising of lubricating oil due to different distribution directions, and the three spiral line structures 21 can prevent the lubricating oil from leaking from different angles when the compressor runs at low frequency, so that the technical problem of poor oil pumping effect at low rotating speed of an oil pumping device of the compressor in the prior art is solved. In addition, when the compressor operates at high frequency, the lubricating oil is oiled through the three-spiral-line structure 21, so that the lubricating oil can be lubricated from different flow directions.

More preferably, in the technical solution of this embodiment, the three spiral structures 21 are uniformly distributed at intervals of 120 degrees, so as to enhance the guiding function of the lubricant oil to rise, and further prevent the lubricant oil from leaking.

More preferably, as shown in fig. 4 and 6, in the solution of the present embodiment, an oil storage tank 22 is formed in the spiral oil pump 20, and the oil storage tank 22 is communicated with a space where the rotating shaft of the compressor is located. During the rotation of the rotating shaft of the compressor, the lubricating oil can be oiled and lubricated along the spiral line structure 21 on the spiral oil pump 20, and the oiling is facilitated through the oil storage tank 22 of the spiral oil pump 20. When the oil storage tank 22 of the spiral oil pump 2 is full of oil, the oiling of the spiral line is assisted, lubricating oil is oiled through the spiral line, and when the crest of the spiral line is reached, the liquid level of the oil storage tank 22 is equivalent to the pushing action of a supporting surface, so that the lubricating oil smoothly reaches the central hole of the crankshaft. If there is no oil outlet hole in the middle and the spiral oil pump 20 is of a solid structure, there is no boosting effect when the lubricating oil reaches the crest of the spiral line, and the lubricating oil height cannot reach the height of the central hole of the crankshaft.

In a preferred embodiment, in the solution of the present embodiment, the oil reservoir 22 has a hexagonal prism structure. The oil storage tank 22 with the hexagonal prism structure is favorable for oiling, lubricating oil can be oiled along the edge, and compared with a triangular prism structure, a quadrangular prism structure and a pentagonal prism structure, the hexagonal prism structure can ensure the strength of the spiral oil pump, and meanwhile, the triangular prism structure, the quadrangular prism structure, the pentagonal prism and a round structure can meet the required strength requirement but cannot meet the requirement of light weight and small quality; however, if a polygonal prism structure with a hexagonal prism structure or more is adopted, the processing is not easy, and the strength requirement is difficult to ensure. The screw oil pump having such a structure is often used for a compressor having a small size and a light weight.

Of course, in order to seek convenience of processing, the oil reservoir 22 of a triangular prism structure, a quadrangular prism structure, or a pentagonal prism structure; in order to further pursue the oiling effect, a polygonal prism structure with a hexagonal prism structure or more may be adopted.

As shown in fig. 7 and 11, in the solution of the present embodiment, a linear embedded structure 23 is formed at the bottom of the spiral oil pump 20, and the linear embedded structure 23 is used for being fixedly connected with the hook wire c. When in use, the linear embedded structure 23 fixes the spiral oil pump 20 on the motor retainer by using the hook wire c. The embedded structure 23 is beneficial to reducing the installation height of the compressor and avoiding the compressor from colliding with the shell. When the fixing structure is used, the protruding part of the hook wire c is embedded into the linear embedded structure 23, and then the hook wire c is connected with the stator 34 or the retainer, so that the fixing of the spiral oil pump 20 can be completed. This structure helps reducing the mounting height of the press, avoids the compressor from hitting the shell.

More preferably, in the technical solution of the present embodiment, a limiting structure 24 is disposed at the bottom of the spiral oil pump 20, and the limiting structure 24 is configured to cooperate with the bottom of the oil supply sleeve 10 to stop the spiral oil pump 20 from moving upward. Optionally, two limiting structures 24 are symmetrically distributed at the bottom of the spiral oil pump 20. When the compressor rotating shaft rotates, the oil supply sleeve 10 moves together with the compressor rotating shaft, and the limiting structure 24 can prevent the spiral oil pump 20 from moving upwards, and meanwhile, mechanical noise generated by direct contact between the spiral oil pump 20 and the compressor rotating shaft is avoided, which is beneficial to reducing the overall noise of the compressor. In this embodiment, the length of the screw oil pump 20 is the same as that of the oil supply sleeve 10, and a certain gap is provided therebetween. During the rotation of the compressor shaft, the mechanical noise generated by the direct contact between the screw oil pump 20 and the compressor shaft can be avoided.

Optionally, in this embodiment, the cross-section of the spiral structure 21 is trapezoidal.

Fig. 8 and 9 show another embodiment of the oil pumping assembly of the present invention, which is different from the above embodiment in that four spiral structures 21 are provided, and the four spiral structures 21 are spaced at 90-degree intervals. As shown in fig. 8 and 10, as another difference from the above embodiment, the embedded structure 23 formed at the bottom of the screw oil pump 20 is cross-shaped, the hook wire for fixing the screw oil pump 20 can be embedded into the cross-shaped embedded structure 23, and the cross-shaped embedded structure 23 is more stable than the straight embedded structure 23, so that the hook wire can be prevented from falling off, the installation height of the pump body is more effectively reduced, and the compressor is suitable for being used in the miniaturized and light-weighted compressors of various companies at present.

Optionally, in this embodiment, the cross section of the spiral line structure 21 is rectangular, the cross section of the rectangular is larger than that of the trapezoid, and the oil feeding amount is also advantageous compared to the trapezoid. If the spiral line structure 21 with the semicircular cross section is adopted, the rotation angle is large when the device runs at a high speed, oil is easily thrown out, and the phenomenon of oiling is not facilitated. Therefore, the rectangular section is adopted, the protruding depth of the spiral line structure 21 is higher, and oiling and lubricating are facilitated.

As other alternative embodiments, the embedded structure 23 may also be in a chevron shape or other shapes.

As another alternative embodiment not shown in the drawings, the screw oil pump 20 may be connected to a rotating shaft of the compressor, and the oil supply sleeve may be fixedly disposed. This embodiment, too, enables oil pumping.

As another alternative embodiment not shown in the drawings, the number of the spiral structures 21 may be 2 or more than four. When the spiral line structure is used, the plurality of spiral line structures 21 are uniformly distributed at equal angle intervals.

As an alternative embodiment not shown in the figures, the cross-section of the spiral structure 21 may also be triangular or fan-shaped.

The invention also provides a compressor, which comprises the oil pumping assembly. By adopting the oil pumping assembly, the lubricating effect on the compressor can be effectively provided, and the use noise of the compressor can be reduced. Specifically, as shown in fig. 3, the compressor includes a cylinder base 35, a stator 34 and a rotor 33 rotatable relative to the stator 34 are mounted on the cylinder base 35, a rotating shaft of the compressor is a crankshaft 31, an oil supply sleeve 10 is fixedly mounted on the crankshaft 31, and the spiral oil pump 20 is fixed by a bracket. In terms of size, the length of the screw oil pump 20 is the same as that of the oil supply sleeve 10, and a certain gap is maintained therebetween. The spiral oil pump 20 is partly immersed in the oil bath 32 inside, the small-size lightweight compressor oiling volume is 120 ml-150 ml usually, stretch into the oil bath 32 inside for guaranteeing the spiral oil pump, the length that needs to guarantee spiral oil pump 20 and fuel feeding sleeve 10 is 30-35mm, spiral oil pump 20 is less than 30mm and will not touch the 32 liquid level in oil bath, can't oil, if be higher than 35mm will be longer because of spiral oil pump 20, hit the shell with the compressor lower casing, the low side that needs to guarantee spiral oil pump 20 simultaneously is 36-40mm apart from the height of the last oilhole of bent axle 31, highly be less than 36mm, can make spiral oil pump 20 apart from the oil hole of bent axle 31 far away, can't make spare part reach lubricated effect, highly be higher than 40mm, spiral oil pump 20 can block up the oil hole, lead to unable oiling.

The technical scheme of the invention also provides an air conditioning unit which comprises the compressor, and the compressor can effectively reduce the use noise of the air conditioning unit.

According to the technical scheme, the multiple spiral line structures 21 and the oil storage grooves 22 with different structures are adopted, so that the problems of insufficient oil quantity on the piston compressor and noise generated by the oil pump in the operation process are solved, the bottom of the spiral oil pump 20 is embedded, the installation height can be reduced, and the compressor is prevented from colliding with a shell.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the embodiment of the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an oil pumping subassembly, its characterized in that is in including oil supply sleeve (10) and setting screw pump (20) in oil supply sleeve (10), oil supply sleeve (10) with one in screw pump (20) is used for linking to each other with the pivot of compressor, oil supply sleeve (10) with another fixed the setting in screw pump (20), be provided with many spiral line structures (21) on the lateral wall of screw pump (20), spiral line structure (21) are followed the length direction spiral of screw pump (20) is coiled.

2. An oil pumping assembly according to claim 1, wherein a plurality of the spiral structures (21) are equiangularly spaced.

3. Pumping oil assembly according to claim 2, characterized in that the spiral structure (21) is three or more than three.

4. The oil pumping assembly as claimed in claim 3, wherein the number of the spiral structures (21) is three, and the three spiral structures (21) are uniformly distributed at intervals of 120 degrees.

5. The oil pumping assembly as claimed in claim 3, wherein the number of the spiral structures (21) is four, and the four spiral structures (21) are uniformly distributed at intervals of 90 degrees.

6. Oil pumping assembly according to claim 1, characterized in that the cross section of the spiral structure (21) is trapezoidal, rectangular, triangular or fan-shaped.

7. The oil pumping assembly of claim 1, wherein an oil storage tank (22) is formed in the spiral oil pump (20), and the oil storage tank (22) is communicated with a space where the rotating shaft of the compressor is located.

8. Oil pumping assembly according to claim 7, characterized in that the oil reservoir (22) is of polygonal prismatic structure.

9. Oil pumping assembly according to claim 8, characterized in that the oil reservoir (22) is of a hexagonal prism structure.

10. An oil pumping assembly according to claim 1, wherein the oil supply sleeve (10) is connected to a rotating shaft of a compressor, and the screw oil pump (20) is fixedly disposed therein.

11. The oil pumping assembly of claim 10, wherein the bottom of the spiral oil pump (20) is formed with an embedded structure (23), and the embedded structure (23) is used for being fixedly connected with a hook wire.

12. Pumping assembly according to claim 11, wherein the insert structure (23) is in the shape of a straight line or a cross.

13. The oil pumping assembly according to claim 10, characterized in that the bottom of the spiral oil pump (20) is provided with a limiting structure (24), and the limiting structure (24) is used for being matched with the bottom of the oil supply sleeve (10) to stop the spiral oil pump (20) from moving upwards.

14. A compressor comprising an oil pumping assembly, characterized in that the oil pumping assembly is as claimed in any one of claims 1 to 13.

15. An air conditioning assembly comprising a compressor, wherein the compressor is the compressor of claim 14.