CN216922422U - Connecting rod on reciprocating compressor, reciprocating compressor and refrigerator - Google Patents
Connecting rod on reciprocating compressor, reciprocating compressor and refrigerator Download PDFInfo
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- CN216922422U CN216922422U CN202123169825.0U CN202123169825U CN216922422U CN 216922422 U CN216922422 U CN 216922422U CN 202123169825 U CN202123169825 U CN 202123169825U CN 216922422 U CN216922422 U CN 216922422U
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- connecting rod
- crankshaft
- reciprocating compressor
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- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 8
- 239000003921 oil Substances 0.000 description 21
- 239000010687 lubricating oil Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
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Abstract
The utility model discloses a connecting rod on a reciprocating compressor, the reciprocating compressor and a refrigerator, which are used for solving the problem of friction loss caused by friction between the connecting rod and a piston pin on the conventional reciprocating compressor. The connecting rod of reciprocating compressor of the present invention includes: the connecting rod comprises a connecting rod body, wherein one end of the connecting rod body is provided with a cylinder matched with a piston pin hole of the reciprocating compressor, the other end of the connecting rod body is provided with a connecting rod head, the connecting rod head is provided with a crankshaft hole, the crankshaft hole is used for being in rotating fit with a crankshaft short shaft of the reciprocating compressor, and the axis of the crankshaft hole is parallel to the axis of the cylinder. According to the utility model, one end of the connecting rod body is set to be in rotating fit with the piston pin hole, so that the connecting rod is only provided with one crankshaft hole matched with the crankshaft, the problem of friction loss caused by the fact that a piston pin is matched with a through hole of a small end of the connecting rod in the prior art is solved, meanwhile, the assembling process is reduced, and the time cost is saved.
Description
Technical Field
The utility model relates to the technical field of compressors, in particular to a connecting rod on a reciprocating compressor, the reciprocating compressor and a refrigerator.
Background
As daily life electrical appliances, the refrigerator is used as a daily life electrical appliance, along with the increase of various refrigerator box types and the diversified development of refrigerator function and use, the reciprocating compressor with the complex existing part structure and assembly mode is difficult to meet the matching requirement of the refrigerator, the reciprocating compressor in the prior art has complex parts and more generated friction pairs, abnormal friction power consumption can be generated between a piston pin on a small end of a connecting rod and the small end of the connecting rod, meanwhile, the installation process is complex, and the operation is difficult.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model discloses a connecting rod on a reciprocating compressor, the reciprocating compressor and a refrigerator, which are used for solving the problem of friction loss caused by friction between the connecting rod and a piston pin on the conventional reciprocating compressor.
In order to achieve the above object, the utility model adopts the following technical scheme:
a first aspect of the present invention discloses a connecting rod of a reciprocating compressor, comprising: the connecting rod comprises a connecting rod body, wherein one end of the connecting rod body is provided with a cylinder matched with a piston pin hole of the reciprocating compressor, the other end of the connecting rod body is provided with a connecting rod head, the connecting rod head is provided with a crankshaft hole, the crankshaft hole is used for being in rotating fit with a crankshaft short shaft of the reciprocating compressor, and the axis of the crankshaft hole is parallel to the axis of the cylinder.
Further optionally, a first oil passage is formed inside the cylinder, the first oil passage penetrates through two end faces of the cylinder, a second oil passage is formed in the connecting rod body, and the second oil passage penetrates through the crankshaft hole and the first oil passage.
Further optionally, the first oil passage extends in the axial direction of the cylinder and is located in the center of the cylinder.
Further optionally, the diameter of the cylinder is greater than the width of the connecting rod body.
Further optionally, the cylinder protrudes to both sides of the connecting rod body along the axial direction of the cylinder, and the protruding lengths are different.
In a second aspect of the present invention, there is disclosed a reciprocating compressor comprising the connecting rod of the first aspect; the piston is provided with a piston pin hole, and the cylinder is arranged in the piston pin hole.
Further optionally, a gap penetrating the piston pin hole is formed on one side of the piston, which faces the connecting rod body, and the width of the gap is smaller than the diameter of the piston pin hole.
Further optionally, the reciprocating compressor further comprises: the engine base is provided with a cylinder hole and a crankshaft mounting hole, the piston is movably arranged in the cylinder hole, the crankshaft is arranged in the crankshaft mounting hole in a rotating mode, and the short shaft of the crankshaft is matched with the crankshaft hole in a rotating mode.
Further optionally, a limit balance block is arranged on the short shaft of the crankshaft, and the head of the connecting rod is located between the limit balance block and the root of the short shaft of the crankshaft.
The third aspect of the utility model discloses a refrigerator comprising the refrigerator of the second aspect.
Has the advantages that: according to the utility model, one end of the connecting rod body is set to be in rotating fit with the piston pin hole, so that the connecting rod is only provided with one crankshaft hole matched with the crankshaft, the problem of friction loss caused by the fact that a piston pin is matched with a through hole of a small end of the connecting rod in the prior art is solved, meanwhile, the assembling process is reduced, and the time cost is saved.
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 exemplary embodiments of the present disclosure, and other drawings may be derived by those skilled in the art without inventive effort.
FIG. 1 shows an isometric view of a connecting rod in an embodiment of the utility model;
FIG. 2 shows a front view of the connecting rod of FIG. 1;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a schematic illustration of the connecting rod of FIG. 1 connected to a crankshaft and a piston;
FIG. 5 shows a schematic view of a piston in an embodiment of the utility model;
figure 6 shows a schematic view of a reciprocating compressor in an embodiment of the present invention.
Reference numerals:
10-a connecting rod; 11-a cylinder; 111-a first oil gallery; 12-a connecting rod body; 121-a second oil passage; 13-connecting rod head; 131-crankshaft hole; 20-a piston; 21-piston pin hole; 22-a gap; 30-a stand; 40-a crankshaft; 41-long axis; 42-short axis; 43-crankshaft bore; 50-limiting balance weight; 60-a rotor; and 70, a stator.
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 utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in the examples of the utility model and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "the plural" typically includes at least two, but does not exclude the presence of at least one.
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 associated objects are in an "or" relationship.
It should also be 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.
The big end and the small end of the connecting rod of the existing reciprocating compressor are both in a through hole structure, a piston pin is arranged in the through hole of the small end and matched with a pin hole in a piston, and the big end is in running fit with a short shaft of a crankshaft.
According to the utility model, the piston pin on the connecting rod is made into a structure integrated with the connecting rod, namely, a cylinder is formed at one end of the connecting rod body, so that the problem of friction caused by the matching of a small end and the piston pin by adopting a through hole is avoided, the assembling process is simplified, and the time cost is saved.
To further illustrate the technical solution of the present invention, the following specific examples are provided with reference to fig. 1 to 6.
Example 1
In the present embodiment, there is provided a connecting rod for a reciprocating compressor, as shown in fig. 1 to 4, comprising: the connecting rod comprises a connecting rod body 12, wherein one end of the connecting rod body 12 is provided with a cylindrical body 11 matched with a piston pin hole 21 of the reciprocating compressor, the other end of the connecting rod body 12 is provided with a connecting rod head 13, the connecting rod head 13 is provided with a crankshaft hole 43, the crankshaft hole 43 is used for being in rotating fit with a short shaft 42 of a crankshaft 40 of the reciprocating compressor, and the axis of the crankshaft hole 43 is parallel to the axis of the cylindrical body 11.
The connecting rod body 12 in this embodiment is a rod-shaped structure for connecting the cylinder 11 and the connecting rod head 13.
Specifically, the connecting rod head 13 has an outer circumferential surface whose axis coincides with the axis of the crank hole 43.
To further achieve lubrication between the cylinder 11 and the piston 20, as shown in fig. 2, a first oil passage 111 is formed inside the cylinder 11, the first oil passage 111 penetrates both end faces of the cylinder 11, a second oil passage 121 is formed inside the connecting rod body 12, and the second oil passage 121 penetrates the crank hole 43 and the first oil passage 111. In this embodiment, second oil passage 121 is communicated with a lubricating oil passage on crankshaft 40, the lubricating oil passage on crankshaft 40 is communicated with an oil sump inside the compressor, and the lubricating oil passage on crankshaft 40 may be implemented by the prior art and will not be described in detail herein. The first oil passage 111 and the second oil passage 121 supply oil to a friction pair formed between the cylinder 11 and the piston pin hole 21.
It is further preferred that the first oil passage 111 extends axially along the cylinder 11 and is located at the center of the cylinder 11, so that the cylinder 11 has better dynamic balance during movement with the piston 20.
It is further preferable that the diameter D of the cylindrical body 11 is larger than the width W of the connecting rod body 12, as shown in fig. 3, so that the cylindrical body 11 of the connecting rod 10 can be inserted into the piston 20, thereby simplifying the assembly process. It should be noted that, as shown in fig. 3, the width of the connecting rod body 12 in the present embodiment refers to the width of the connecting rod body 12 in the cross section perpendicular to the axis of the cylindrical body 11. A notch is arranged on one side of the piston 20 facing the connecting rod 10, and the piston pin hole 21 is communicated with the notch, so that the cylinder 11 can conveniently slide into the piston pin hole 21 from one side of the piston pin hole 21.
Further alternatively, as shown in fig. 2, the cylinder 11 protrudes to both sides of the connecting rod body 12 along the axial direction, and the protruding lengths are different, so as to avoid interference between the connecting rod head 13 and the end face where the short shaft 42 of the crankshaft 40 is located in the assembling process.
Example 2
The present embodiment provides a reciprocating compressor, as shown in fig. 4 to 6, comprising a connecting rod 10 exemplified in embodiment 1; the piston 20 is provided with a piston pin hole 21, and the cylinder 11 is arranged in the piston pin hole 21.
Preferably, a notch 22 penetrating the piston pin hole 21 is formed on one side of the piston 20 facing the connecting rod body 12, and the width of the notch 22 is smaller than the diameter of the piston pin hole 21, so that the cylinder 11 can be inserted into the piston pin hole 21, and the installation process is simplified.
Further, the reciprocating compressor further includes: the engine base 30 is provided with a cylinder hole and a crankshaft 40 mounting hole, the piston 20 is movably arranged in the cylinder hole, the crankshaft 40, a long shaft 41 of the crankshaft 40 is rotatably arranged in the crankshaft 40 mounting hole, and a short shaft 42 of the crankshaft 40 is rotatably matched with a crankshaft hole 43.
Further optionally, a limit balance weight 50 is disposed on the stub shaft 42 of the crankshaft 40, and the connecting rod head 13 is located between the limit balance weight 50 and the root of the stub shaft 42 of the crankshaft 40. The limiting balance weight 50 is fixedly arranged above the connecting rod head 13 through interference fit to limit the axial movement of the connecting rod head 13, and plays a role in dynamic balance in the connecting rod movement process. The cylindrical body 11 is in clearance fit with the piston pin bore 21, and the crankshaft bore 43 is in clearance fit with the stub shaft 42 of the crankshaft 40. The connecting rod 10 can stably reciprocate on the crankshaft 40 by the arrangement of the limit balance weight 50.
In this embodiment, the long axis 41 of the crankshaft 40 is in interference fit with the rotor 60 of the motor, the stator 70 of the motor is disposed in the housing of the reciprocating compressor, the long axis 41 of the crankshaft 40 makes a circular motion around the center line thereof under the driving of the motor when the compressor operates, and the short axis 42 (crank) makes a circular motion around the center line of the long axis 41 due to the preset eccentric amount between the long axis 41 of the crankshaft 40 and the short axis 42 (crank), so that the connecting rod 10 on the short axis 42 pushes the piston 20 to make a reciprocating motion in the cylinder hole of the cylinder block, the piston 20 compresses the sucked refrigerant gas, and the high-temperature and high-pressure refrigerant gas is discharged through the exhaust pipe, thereby completing the refrigeration cycle process.
Inside can throwing some lubricating oil into the die cavity that cylinder 11 and piston 20 formed in the compressor operation process, lubricate piston 20 and cylinder 11 bottom through first oil duct 111, reduce during lubricating oil gets into compression system, can improve the too big problem of compressor high frequency oil extraction volume, make lubricating oil get into the vice friction that piston 20 and cylinder 11 formed when the low frequency operation, play the effect of lubricated this position, reduce the friction loss, improve the effect of oiling, reduce extra friction pair simultaneously, the running loss that significantly reduces, simplify the installation flow, the stability of crank connecting rod 10 mechanism has been increased simultaneously.
Example 3
The present embodiment provides a refrigerator including the reciprocating compressor exemplified in embodiment 2.
Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the disclosure is not limited to the precise construction, arrangements, 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.
Claims (10)
1. A connecting rod on a reciprocating compressor, comprising:
the connecting rod comprises a connecting rod body, wherein one end of the connecting rod body is provided with a cylinder matched with a piston pin hole of the reciprocating compressor, the other end of the connecting rod body is provided with a connecting rod head, the connecting rod head is provided with a crankshaft hole, the crankshaft hole is used for being in rotating fit with a crankshaft short shaft of the reciprocating compressor, and the axis of the crankshaft hole is parallel to the axis of the cylinder.
2. The connecting rod of a reciprocating compressor according to claim 1, wherein a first oil passage is formed in the cylinder, the first oil passage penetrating both end surfaces of the cylinder, and a second oil passage is formed in the connecting rod body, the second oil passage penetrating the crank hole and the first oil passage.
3. The connecting rod of claim 2, wherein the first oil passage extends in an axial direction of the cylinder and is located at a center of the cylinder.
4. A connecting rod for a reciprocating compressor as claimed in claim 1, wherein the diameter of said cylindrical body is greater than the width of the connecting rod body.
5. The connecting rod of a reciprocating compressor as claimed in claim 1, wherein the cylindrical body is protruded to both sides of the connecting rod body in an axial direction thereof with different lengths.
6. A reciprocating compressor, comprising:
the connecting rod of any one of claims 1-5;
the piston is provided with a piston pin hole, and the cylinder is arranged in the piston pin hole.
7. The reciprocating compressor of claim 6, wherein a gap is formed at a side of the piston facing the connecting rod body to be intersected with the piston pin hole, and a width of the gap is smaller than a diameter of the piston pin hole.
8. The reciprocating compressor of claim 6 or 7, further comprising:
the engine base is provided with a cylinder hole and a crankshaft mounting hole, the piston is movably arranged in the cylinder hole,
the long shaft of the crankshaft is rotatably arranged in the crankshaft mounting hole, and the short shaft of the crankshaft is in rotating fit with the crankshaft hole.
9. The reciprocating compressor of claim 8, wherein a limit weight is provided on the stub shaft of the crankshaft, and the connecting rod head is located between the limit weight and a root of the stub shaft of the crankshaft.
10. A refrigerator characterized by comprising the reciprocating compressor of any one of claims 6 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123169825.0U CN216922422U (en) | 2021-12-16 | 2021-12-16 | Connecting rod on reciprocating compressor, reciprocating compressor and refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123169825.0U CN216922422U (en) | 2021-12-16 | 2021-12-16 | Connecting rod on reciprocating compressor, reciprocating compressor and refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216922422U true CN216922422U (en) | 2022-07-08 |
Family
ID=82252383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123169825.0U Active CN216922422U (en) | 2021-12-16 | 2021-12-16 | Connecting rod on reciprocating compressor, reciprocating compressor and refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216922422U (en) |
-
2021
- 2021-12-16 CN CN202123169825.0U patent/CN216922422U/en active Active
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