CN220890443U - Crankshaft, compressor and refrigeration equipment - Google Patents
Crankshaft, compressor and refrigeration equipment Download PDFInfo
- Publication number
- CN220890443U CN220890443U CN202322680427.8U CN202322680427U CN220890443U CN 220890443 U CN220890443 U CN 220890443U CN 202322680427 U CN202322680427 U CN 202322680427U CN 220890443 U CN220890443 U CN 220890443U
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- crankshaft
- oil
- oil outlet
- supply channel
- compressor
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 10
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 6
- 238000005461 lubrication Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 239000003921 oil Substances 0.000 description 97
- 239000010687 lubricating oil Substances 0.000 description 16
- 238000005507 spraying Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model provides a crankshaft, a compressor and refrigeration equipment, wherein an oil supply channel and an oil outlet which are mutually communicated are formed in the crankshaft; the crankshaft comprises a shaft part and an eccentric part, the oil supply channel is positioned on the shaft part, the oil supply channel extends along the axial direction of the shaft part, the eccentric part is arranged on the shaft part, and the axis of the eccentric part is eccentrically arranged relative to the axis of the shaft part; the oil outlet is arranged in an offset manner relative to the central shaft of the oil supply channel, and in the rotation direction of the crankshaft, the connection position of the oil inlet of the oil outlet and the oil supply channel is positioned at the downstream side of a preset plane, and the preset plane passes through the central shaft and the central position of the oil outlet. The crankshaft can accelerate oil circuit circulation and ensure lubrication effect.
Description
Technical Field
The utility model relates to the technical field of compressors, in particular to a crankshaft, a compressor and refrigeration equipment.
Background
In the high-speed running process of the compressor, the internal oil way loss is increased, the contact surface between the crankshaft and the pump body is worn out along with the time, the generated friction power consumption is gradually increased, the energy efficiency of the compressor is reduced if the compressor is light, the damage of other parts of the compressor is further caused along with the aggravation of the wear of the crankshaft and the pump body if the compressor is heavy, and the reliability of the compressor is affected.
When the compressor runs, lubricating oil is sucked upwards from the center of the shaft, oil is supplied to each part of the pump body through the radial oil holes of the crankshaft, and flows back under the action of gravity, so that oil circuit circulation is realized. The crankshaft oil outlet is a fine hole perpendicular to the axis, the flow is small, and a backflow structure is lacked, so that the throttling loss is large, uninterrupted oil supply is needed, the energy consumption of a unit can be increased for a long time, and the service life of a compressor is seriously influenced.
Disclosure of utility model
A first object of the present utility model is to provide a crankshaft capable of accelerating the circulation of an oil passage and ensuring a lubrication effect.
A second object of the present utility model is to provide a compressor having the above crankshaft.
A third object of the present utility model is to provide a refrigeration appliance having a compressor as described above.
In order to achieve the first object, the present utility model provides a crankshaft, wherein an oil supply channel and an oil outlet which are mutually communicated are formed on the crankshaft; the crankshaft comprises a shaft part and an eccentric part, an oil supply channel is positioned on the shaft part, the oil supply channel extends along the axial direction of the shaft part, and the axis of the eccentric part is eccentrically arranged relative to the axis of the shaft part; the oil outlet is arranged in an offset manner relative to the central shaft of the oil supply channel, and in the rotation direction of the crankshaft, the connection position of the oil inlet of the oil outlet and the oil supply channel is positioned at the downstream side of a preset plane, and the preset plane passes through the central shaft and the central position of the oil outlet.
According to the scheme, in the oil outlet structure on the crankshaft, a certain eccentric amount is arranged on the radial upper oil outlet relative to the oil supply channel, and the oil outlet is eccentrically offset and flows to the crankshaft side cut along with the rotation of the crankshaft, so that the crankshaft rotates and simultaneously flows to the outer shaft body of the crankshaft. Meanwhile, as the eccentric direction is consistent with the rotation direction of the crankshaft, when the crankshaft rotates clockwise, lubricating oil is sucked upwards through the oil supply channel and sprayed out from the oil outlet, the direction of the spraying speed forms an obtuse angle with the tangential direction, the tangential speed is opposite to the rotation direction of the crankshaft (namely, the spraying speed is faster relative to the lubricating oil of the crankshaft), so that the circulation efficiency of the oil way is effectively promoted and improved, the lubrication effect between the crankshaft and the pump body is enhanced, the friction power consumption between the crankshaft and the pump body is reduced, the energy consumption of the compressor is reduced, the lubrication condition is effectively improved, and the purpose of prolonging the service life of the compressor is achieved.
Preferably, the oil outlet extends in a straight line.
It can be seen that the straight-line extending oil outlet is convenient for processing.
Preferably, the oil outlet hole extends in an arc shape.
Further, the oil outlet is bent in a direction away from a preset plane.
Therefore, the centrifugal acting force of the lubricating oil at the oil outlet is further improved.
One preferable scheme is that the oil outlet hole is obliquely arranged from top to bottom from an oil inlet of the oil outlet hole to an oil outlet of the oil outlet hole.
Therefore, through centrifugal offset of the oil outlet, the spraying speed of the lubricating oil is higher under the action of centrifugal force, and meanwhile, the oil hole is inclined downwards to give the lubricating oil a downward initial speed, so that the lubricating oil can be thrown out obliquely downwards under the action of the centrifugal force through the oil outlet in the rotating process of the crankshaft, and the flow rate of the lubricating oil and the circulating speed of an oil way are further accelerated. Meanwhile, the oil outlet is offset and inclined, so that a larger downward opening is formed between the oil outlet and the outer circular surface of the crankshaft, the guiding effect is achieved on the circulation of an oil way, the lubrication efficiency is further improved, the friction power consumption is reduced, and the service life of the compressor is prolonged.
Preferably, the oil outlet is located in the eccentric portion.
Further, a concave part is arranged on the outer peripheral wall of the eccentric part, the concave part is concave inwards from the outer peripheral wall of the eccentric part, and the concave part penetrates through the eccentric part along the axial direction of the central shaft; the oil outlet of the oil outlet is positioned in the concave part.
Therefore, the arrangement of the concave part can reduce the contact area between the outer peripheral wall of the eccentric part and the inner peripheral wall of the roller, so that friction between the eccentric part and the inner peripheral wall of the roller is reduced, and a gap is provided for lubricating oil to flow, so that lubricating oil can flow better.
In order to achieve the second object, the present utility model provides a compressor including the above crankshaft.
In a preferred scheme, the compressor further comprises an upper flange, a lower flange, rollers and an oil pool; the roller is embedded on the eccentric part, the upper flange is sleeved on the shaft part and is positioned above the eccentric part, and the lower flange is sleeved on the shaft part and is positioned below the eccentric part; the oil pool is positioned below the lower flange and communicated with the oil supply channel.
To achieve the third object, the present utility model provides a refrigeration apparatus including the compressor described above.
Drawings
Fig. 1 is an exploded view of a rotor and pump assembly in a compressor embodiment of the present utility model.
Fig. 2 is a cross-sectional view of a first perspective of a rotor and pump assembly in an embodiment of the compressor of the present utility model.
Fig. 3 is a cross-sectional view of a second perspective of a rotor and pump assembly in an embodiment of the compressor of the present utility model.
Fig. 4 is a partial enlarged view at a in fig. 3.
FIG. 5 is a block diagram of an embodiment of a crankshaft of the present utility model.
FIG. 6 is a perspective view of an embodiment of a crankshaft of the present utility model.
Fig. 7 is a partial enlarged view at B in fig. 6.
FIG. 8 is a cross-sectional view of a first position of an embodiment of a crankshaft of the present utility model.
Fig. 9 is a partial enlarged view at C in fig. 8.
FIG. 10 is a cross-sectional view of a second position of an embodiment of the crankshaft of the present utility model.
Fig. 11 is a partial enlarged view at D in fig. 10.
FIG. 12 is a schematic diagram of eccentric acceleration in an embodiment of the crankshaft of the present utility model.
The utility model is further described below with reference to the drawings and examples.
Detailed Description
Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative, and is in no way intended to limit the utility model, its application, or uses. The present utility model may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments should be construed as exemplary only and not limiting unless otherwise specifically stated.
The terms "first," "second," and the like, as used herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises" and the like means that elements preceding the word encompass the elements recited after the word, and not exclude the possibility of also encompassing other elements. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
In the present utility model, when it is described that a specific device is located between a first device and a second device, an intervening device may or may not be present between the specific device and the first device or the second device. When it is described that a particular device is connected to other devices, the particular device may be directly connected to the other devices without intervening devices, or may be directly connected to the other devices without intervening devices.
All terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
Crankshaft and compressor embodiments:
Referring to fig. 1 to 3, the compressor of the present embodiment includes a housing, and a pump body assembly 1 and a motor assembly, etc. provided in the housing, a crankshaft 2 of the motor assembly extends in a vertical direction, and the pump body assembly 1 is mounted on the crankshaft 2.
The pump body assembly 1 comprises a cylinder body 11, an upper flange 12, a lower flange 13, rollers 14 and a slide 15.
The cylinder body 11 is provided with a cylinder chamber 10, the roller 14 and the slide 15 are both positioned in the cylinder chamber 10, the crankshaft 2 comprises a shaft portion 3 and an eccentric portion 4, the eccentric portion 4 is positioned in the cylinder chamber 10, the roller 14 is embedded on the eccentric portion 4, and when the crankshaft 2 rotates, the roller 14 makes linear contact with the inner peripheral wall of the cylinder chamber 10 through an oil film and simultaneously performs eccentric rotation.
The upper flange 12 is sleeved on the shaft part 3 and is positioned above the eccentric part 4, the lower flange 13 is sleeved on the shaft part 3 and is positioned below the eccentric part 4, and the oil pool is positioned below the lower flange 13 and is communicated with the oil supply channel 31 on the crankshaft 2.
Referring to fig. 3 to 12, the crankshaft 2 is provided with an oil supply passage 31 and an oil outlet 41 which are communicated with each other, the oil supply passage 31 is provided on the shaft portion 3, the oil supply passage 31 extends along the axial direction of the shaft portion 3, the eccentric portion 4 is provided at a position of the shaft portion 3 near the lower end, and the axis of the eccentric portion 4 is eccentrically provided with respect to the axis of the shaft portion 3.
The oil outlet hole 41 is located at the eccentric portion 4, and the oil outlet hole 41 is offset with respect to the central axis 32 of the oil supply passage 31, that is, the extension line of the oil outlet hole 41 does not pass through the central axis 32 of the oil supply passage 31. In the rotation direction R of the crankshaft 2, the connection position a of the oil inlet 42 of the oil outlet 41 and the oil supply passage 31 is located on the downstream side of the preset plane P, the preset plane P passes through the center axis 32 and the center position of the oil outlet 43 of the oil outlet 41, and the center position of the oil outlet 43 is the intersection position of the center axis of the oil outlet and the oil outlet 43.
The oil outlet 41 extends linearly, and from the oil inlet 42 of the oil outlet 41 to the oil outlet 43 of the oil outlet 41, the oil outlet 41 is inclined from top to bottom. Through with oil outlet 41 centrifugal bias, lubricating oil blowout speed is faster under centrifugal force effect, and the oilhole downward sloping gives lubricating oil a decurrent initial velocity again simultaneously, and bent axle 2 is rotatory in-process, and lubricating oil is under centrifugal force effect, through oil outlet 41, can slant downward acceleration throw away, has further accelerated lubricating oil flow and oil circuit circulation rate. Meanwhile, the oil outlet 41 is offset and inclined, so that a larger downward opening is formed between the oil outlet and the outer circular surface of the crankshaft 2, the oil way circulation is guided, the lubrication efficiency is further improved, the friction power consumption is reduced, and the service life of the compressor is prolonged.
The outer peripheral wall of the eccentric portion 4 is provided with a recess 40, the recess 40 is recessed inward from the outer peripheral wall of the eccentric portion 4, and the recess 40 penetrates the eccentric portion 4 along the axial direction of the central shaft 32; the oil outlet 43 of the oil outlet hole 41 is located in the recess 40. The provision of the recess 40 reduces the contact area between the outer peripheral wall of the eccentric portion 4 and the inner peripheral wall of the roller 14, thereby reducing friction therebetween, while providing clearance for the flow of lubricant oil, facilitating better flow of lubricant oil.
As shown in fig. 12, in the structure of the oil outlet 41 on the crankshaft 2, the oil outlet 41 is provided with a certain eccentric amount e with respect to the oil supply passage 31 in the radial direction, and the oil outlet 41 is eccentrically offset, so that the oil flows to the trimming of the crankshaft 2 along with the rotation of the crankshaft 2, and flows to the outer shaft body of the crankshaft 2 while the crankshaft 2 rotates. Meanwhile, since the eccentric direction is identical to the rotation direction of the crankshaft 2, when the crankshaft 2 rotates clockwise, the lubricating oil is sucked up through the oil supply channel 31 and sprayed out from the oil outlet 41, the direction V of the spraying speed forms an obtuse angle with the tangential direction, the speed V has a tangential component speed V1 and a radial component speed V2, and the tangential component speed direction V1 is opposite to the rotation direction R of the crankshaft 2 (namely, the spraying speed of the lubricating oil is faster relative to the crankshaft 2), thereby effectively promoting and improving the circulation efficiency of an oil way, enhancing the lubrication effect between the crankshaft 2 and a pump body, reducing the friction power consumption between the crankshaft 2 and the pump body, reducing the energy consumption of a compressor, and effectively improving the lubrication condition, thereby achieving the purpose of prolonging the service life of the compressor.
Refrigeration device embodiment:
The refrigeration device in this embodiment includes the compressor in the compressor embodiment described above, and the refrigeration device may be an air conditioning system or a refrigerator.
In addition, the number of the concave portions may be two or more, and the number of the oil outlet holes may be two or more, one oil outlet hole being provided corresponding to one concave portion, each concave portion being arranged at intervals along the circumferential direction of the eccentric portion, each oil outlet hole being arranged at intervals along the circumferential direction of the eccentric portion. The shape, size, arrangement and the like of the concave part and the oil outlet hole can be changed according to the needs. The oil outlet hole can also be arc-shaped and extend, and the oil outlet hole is bent towards the direction away from the preset plane. The above-described modifications can also achieve the object of the present utility model.
Finally, it should be emphasized that the foregoing is merely a preferred embodiment of the present utility model, and is not intended to limit the utility model, but rather that various changes and modifications can be made by those skilled in the art without departing from the spirit and principles of the utility model, and any modifications, equivalent substitutions, improvements, etc. are intended to be included within the scope of the present utility model.
Claims (10)
1. The crankshaft is provided with an oil supply channel and an oil outlet which are mutually communicated;
The crankshaft comprises a shaft part and an eccentric part, wherein the oil supply channel is positioned on the shaft part, the oil supply channel extends along the axial direction of the shaft part, and the axis of the eccentric part is eccentrically arranged relative to the axis of the shaft part;
The method is characterized in that:
The oil outlet is arranged in an offset manner relative to the central shaft of the oil supply channel, and in the rotating direction of the crankshaft, the connection position of the oil inlet of the oil outlet and the oil supply channel is positioned at the downstream side of a preset plane, and the preset plane passes through the central shaft and the central position of the oil outlet.
2. A crankshaft as claimed in claim 1, wherein:
The oil outlet extends in a straight line.
3. A crankshaft as claimed in claim 1, wherein:
the oil outlet hole extends in an arc shape.
4. A crankshaft as claimed in claim 3, wherein:
the oil outlet is bent towards a direction away from the preset plane.
5. A crankshaft according to any one of claims 1 to 4, wherein:
from the oil inlet of oil outlet to the oil outlet of oil outlet, the oil outlet slope sets up from top to bottom.
6. A crankshaft according to any one of claims 1 to 4, wherein:
The oil outlet is located at the eccentric portion.
7. A crankshaft as claimed in claim 6, wherein:
A concave part is arranged on the outer peripheral wall of the eccentric part, and the concave part is concave inwards from the outer peripheral wall of the eccentric part;
An oil outlet of the oil outlet is positioned in the concave part.
8. Compressor, characterized by comprising a crankshaft according to any one of claims 1 to 7.
9. The compressor as set forth in claim 8, wherein:
the compressor also comprises an upper flange, a lower flange, rollers and an oil pool;
The roller is embedded on the eccentric part, the upper flange is sleeved on the shaft part and is positioned above the eccentric part, and the lower flange is sleeved on the shaft part and is positioned below the eccentric part;
the oil pool is positioned below the lower flange and is communicated with the oil supply channel.
10. Refrigeration device, comprising a compressor according to claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322680427.8U CN220890443U (en) | 2023-10-07 | 2023-10-07 | Crankshaft, compressor and refrigeration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322680427.8U CN220890443U (en) | 2023-10-07 | 2023-10-07 | Crankshaft, compressor and refrigeration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220890443U true CN220890443U (en) | 2024-05-03 |
Family
ID=90880228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322680427.8U Active CN220890443U (en) | 2023-10-07 | 2023-10-07 | Crankshaft, compressor and refrigeration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220890443U (en) |
-
2023
- 2023-10-07 CN CN202322680427.8U patent/CN220890443U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |