CN212717054U - Connecting rod for compressor and refrigeration equipment with same - Google Patents
Connecting rod for compressor and refrigeration equipment with same Download PDFInfo
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- CN212717054U CN212717054U CN202021189022.4U CN202021189022U CN212717054U CN 212717054 U CN212717054 U CN 212717054U CN 202021189022 U CN202021189022 U CN 202021189022U CN 212717054 U CN212717054 U CN 212717054U
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Abstract
The utility model discloses a compressor and refrigeration plant that is used for connecting rod of compressor and has this connecting rod. The connecting rod for a compressor includes: a stem having first and second ends opposite in a lengthwise direction thereof; the piston connecting part is connected with the first end part and is provided with a first trepan boring, the wall surface of the first trepan boring is provided with a surface pressing area, the rod part and the surface pressing area are opposite to each other in the length direction of the rod part, the surface pressing area is at least partially overlapped with the connecting part of the piston connecting part and the first end part of the rod part in the circumferential direction of the first trepan boring, the wall surface of the first trepan boring is provided with a wedge-shaped oil groove, the oil groove is positioned at the upstream of the surface pressing area in the circumferential direction of the first trepan boring, and the oil groove is adjacent to the surface pressing area in the circumferential direction; and the crankshaft connecting part is connected with the second end part and is provided with a second sleeve hole. According to the utility model discloses a connecting rod for compressor has advantages such as wearing and tearing are little, good reliability.
Description
Technical Field
The utility model relates to a compressor field specifically, relates to a connecting rod for compressor, still relates to compressor and refrigeration plant who has this connecting rod.
Background
In the related art, the fit clearance between the connecting rod and the piston pin of the compressor is small, so that an effective oil film is difficult to form on the fit surface between the connecting rod and the piston pin to lubricate a kinematic pair formed by the connecting rod and the piston pin, and further the temperature of the kinematic pair cannot be effectively reduced, so that the abrasion of the kinematic pair is increased, the fault is easily caused, and the reliability of the compressor is reduced.
SUMMERY OF THE UTILITY MODEL
The present invention is made based on the discovery and recognition by the inventors of the following facts and problems: in the related art, an oil groove is provided in the connecting rod, particularly, in a wall surface of a sleeve hole of a piston connecting portion of the connecting rod, but the oil groove is not well lubricated due to an unreasonable shape and an unreasonable installation position (particularly, an unreasonable shape of the oil groove).
The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, the utility model provides a compressor and refrigeration plant that is used for connecting rod of compressor and has this connecting rod.
According to the utility model discloses a connecting rod for compressor includes: a stem having first and second ends opposite in a lengthwise direction thereof; a piston connecting portion connected to the first end portion of the rod portion, the piston connecting portion having a first pocket hole, a wall surface of the first pocket hole having a face pressure region, the rod portion and the face pressure region being opposed to each other in a length direction of the rod portion, the face pressure region being at least partially overlapped with a connection point of the piston connecting portion and the first end portion of the rod portion in a circumferential direction of the first pocket hole, wherein a wedge-shaped oil groove is provided in the wall surface of the first pocket hole, the oil groove being located upstream of the face pressure region in the circumferential direction of the first pocket hole, the oil groove being adjacent to the face pressure region in the circumferential direction of the first pocket hole; and the crankshaft connecting part is connected with the second end part of the rod part and is provided with a second sleeve hole.
According to the utility model discloses a connecting rod for compressor has the advantage that wearing and tearing are little, the good reliability.
Optionally, the first center line of the rod portion extends along the length direction of the rod portion, and an included angle between the center line of the oil groove and the first center line of the rod portion is greater than or equal to 30 degrees and less than or equal to 35 degrees.
Optionally, an included angle between a center line of the oil groove and the first center line of the rod part is 30 degrees.
Optionally, the first center line of the rod portion extends along the length direction of the rod portion, and the wall surface of the oil groove includes: a first arc surface portion having a first edge and a second edge opposite in a circumferential direction thereof; the outer edge of the first plane part is connected with the first edge; and a second flat portion located downstream of the first flat portion in a circumferential direction of the first trepan, an outer edge of the second flat portion being connected to the second edge, and an inner edge of the second flat portion being located downstream of the outer edge of the second flat portion in the circumferential direction of the first trepan.
Optionally, the first plane portion is parallel to a center line of the oil groove, an included angle between the second plane portion and the center line of the oil groove is 40-60 degrees, and an included angle between the first plane portion and the second plane portion is 40-60 degrees.
Optionally, an included angle between the second plane portion and the center line of the oil groove is 50 degrees, and an included angle between the first plane portion and the second plane portion is 50 degrees.
Optionally, the first arc surface portion is an arc surface.
Optionally, the oil groove penetrates the piston connecting portion in an axial direction of the first sleeve hole.
According to the utility model discloses a compressor includes: a connecting rod for a compressor according to the present invention; a piston coupled to the connecting rod by a wrist pin, the wrist pin being disposed within a first bore of the connecting rod; and the eccentric journal of the crankshaft is arranged in the second sleeve hole of the connecting rod.
According to the utility model discloses a compressor has the advantage that wearing and tearing are little, the good reliability.
According to the utility model discloses a refrigeration plant includes according to the utility model discloses a compressor.
According to the utility model discloses a refrigeration plant has good reliability's advantage.
Drawings
Fig. 1 is a schematic structural view of a connecting rod according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a connecting rod according to an embodiment of the present invention;
fig. 3 is a partially enlarged view of fig. 2.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
A connecting rod 100 for a compressor according to an embodiment of the present invention is described below with reference to the accompanying drawings. As shown in fig. 1 to 3, a connecting rod 100 for a compressor according to an embodiment of the present invention includes a rod part 2, a piston connecting part 3, and a crankshaft connecting part 4.
The rod portion 2 has a first end 21 and a second end 22, and the first end 21 of the rod portion 2 and the second end 22 of the rod portion 2 are opposite in the length direction of the rod portion 2. The piston connecting portion 3 is connected to the first end 21 of the rod portion 2, the piston connecting portion 3 having a first trepan bore 31. The crankshaft connecting portion 4 is connected to the second end 22 of the rod portion 2, and the crankshaft connecting portion 4 has a second trepan boring 41.
The wall 311 of the first trepan 31 has a face pressure zone 312. The rod portion 2 is opposite to the surface pressing area 312 in the length direction of the rod portion 2, and the surface pressing area 312 at least partially overlaps with the connection between the piston connecting portion 3 and the first end portion 21 of the rod portion 2 in the circumferential direction of the first sleeve hole 31. In other words, a first portion of the piston connecting portion 3 is connected to the first end 21 of the rod portion 2, and at least a portion of the land area 312 coincides with at least a portion of the first portion of the piston connecting portion 3 in the circumferential direction of the first sleeve hole 31.
The wall 311 of the first sleeve opening 31 is provided with a wedge-shaped oil groove 1, which oil groove 1 is adjacent to the second nip in the circumferential direction of the first sleeve opening 31. That is, the distance of the oil groove 1 from the face nip in the circumferential direction of the first pocket 31 is smaller than the distance of the oil groove 1 from the second face nip in the circumferential direction of the first pocket 31.
According to the embodiment of the present invention, the connecting rod 100 for the compressor can store the lubricating oil (e.g., the refrigerating machine oil) in the oil groove 1 by providing the wedge-shaped oil groove 1 on the wall 311 of the first sleeve hole 31. When the piston connecting portion 3 (connecting rod 100) rotates relative to the piston pin, the lubricating oil stored in the oil groove 1 may leave the oil groove 1 and enter between the wall surface 311 of the first bushing hole 31 and the piston pin, so as to lubricate the piston connecting portion 3 (connecting rod 100) and the piston pin.
More importantly, the wedge-shaped oil groove 1 is very beneficial for the lubricating oil in the oil groove 1 to flow out of the oil groove 1. This can form an effective oil film between the wall surface 311 of the first bushing 31 and the piston pin, and can significantly reduce the wear between the piston connecting portion 3 (connecting rod 100) and the piston pin, so that the reliability of the connecting rod 100 for the compressor can be improved.
Furthermore, by having the oil groove 1 located upstream of the surface pressure zone 312 in the circumferential direction of the first sleeve opening 31 and adjacent to the surface pressure zone 312, it is possible to allow the lubricating oil leaving the oil groove 1 to rapidly enter the surface pressure zone 312 for better lubrication of the surface pressure zone 312.
Therefore, the connecting rod 100 for the compressor according to the embodiment of the present invention has the advantages of small wear, good reliability, etc.
The utility model discloses still provide the compressor. The compressor according to an embodiment of the present invention includes a connecting rod 100, a piston (not shown in the drawings), and a crankshaft (not shown in the drawings). The piston is connected to the connecting rod 100 by a wrist pin (not shown) disposed in the first bore 31 of the connecting rod 100. The eccentric journal of the crankshaft is disposed in the second bore 41 of the connecting rod 100.
The piston pin can be arranged in the first bore 31 of the connecting rod 100 in a known manner and the eccentric journal of the crankshaft can be arranged in the second bore 41 of the connecting rod 100 in a known manner, which is irrelevant in the sense of the invention of the present application and is therefore not described in detail.
Therefore, according to the utility model discloses compressor has advantages such as wearing and tearing are little, good reliability.
As shown in fig. 1 to 3, a connecting rod 100 for a compressor may include a rod part 2, a piston connection part 3, and a crankshaft connection part 4. The rod portion 2 has a first end 21 and a second end 22, and the first end 21 of the rod portion 2 and the second end 22 of the rod portion 2 are opposite in the length direction of the rod portion 2. The longitudinal direction of the stem 2 is shown by arrow a in fig. 2.
The crankshaft connecting portion 4 is connected to the second end 22 of the rod portion 2, and the crankshaft connecting portion 4 has a second trepan boring 41. The piston connecting portion 3 is connected to the first end 21 of the rod portion 2, the piston connecting portion 3 having a first trepan bore 31, and a wall 311 of the first trepan bore 31 having a face pressure zone 312. Both the piston connecting portion 3 and the crankshaft connecting portion 4 may be cylindrical.
The rod portion 2 is opposite to the surface pressing area 312 in the length direction of the rod portion 2, and the surface pressing area 312 at least partially overlaps with the connection between the piston connecting portion 3 and the first end portion 21 of the rod portion 2 in the circumferential direction of the first sleeve hole 31. That is, the first radial direction of the first set of holes 31 coincides with the length direction of the stem 2. The surface pressure zone 312 is opposite to the first portion 313 of the wall 311 in the first radial direction, the surface pressure zone 312 being located between the crankshaft connection 4 and the first portion 313 of the wall 311 in the first radial direction.
Optionally, the central angle of the area 312 is less than 60 degrees. The area nip 312 may be symmetrical about the first radial direction. The surface pressure area 312 has a first edge and a second edge opposite to each other in the circumferential direction of the first sleeve hole 31, a central angle of the surface pressure area 312 corresponding to a portion of the first edge in the first radial direction is less than 30 degrees, and a central angle of the surface pressure area 312 corresponding to a portion of the second edge in the first radial direction is less than 30 degrees.
The wall 311 of the first sleeve hole 31 is provided with a wedge-shaped oil groove 1. Alternatively, the oil groove 1 penetrates the piston connecting portion 3 in the axial direction of the first sleeve hole 31. This makes it possible not only for the oil groove 1 to store more lubricating oil, but also for the lubricating oil from the outside to enter the oil groove 1 more easily, so that the oil groove 1 can continuously supply lubricating oil between the wall surface 311 of the first socket 31 and the piston pin, i.e., between the piston connecting portion 3 and the piston pin. This allows an effective oil film to be continuously formed between the wall surface 311 of the first bushing hole 31 and the piston pin, and thus, wear between the piston connecting portion 3 (connecting rod 100) and the piston pin can be further reduced, so that the reliability of the connecting rod 100 for a compressor can be further improved.
The oil groove 1 is located upstream of the face nip 312 in the circumferential direction of the first pocket 31, and the oil groove 1 is adjacent to the face nip 312 in the circumferential direction of the first pocket 31. Next, the oil groove 1 is explained as being located upstream of the face nip 312 in the circumferential direction of the first pocket 31, taking the connecting rod 100 (piston connecting portion 3) as an example of counterclockwise rotation. The oil groove 1 being located upstream of the face nip 312 in the circumferential direction of the first sleeve hole 31 means: the oil groove 1 rotates counterclockwise by a certain angle in the circumferential direction of the first boring 31 to reach the position of the surface nip 312.
As shown in fig. 3, the first center line L1 of the rod part 2 extends along the length direction of the rod part 2, i.e. the first radial direction of the first trepan 31 coincides with the first center line L1 of the rod part 2, or the first radial direction of the first trepan 31 is parallel to the first center line L1 of the rod part 2. An included angle alpha between the center line L2 of the oil groove 1 and the first center line L1 of the rod part 2 is more than or equal to 30 degrees and less than or equal to 35 degrees. That is, the included angle between the center line L2 of the oil groove 1 and the first radial direction of the first sleeve hole 31 is greater than or equal to 30 degrees and less than or equal to 35 degrees. This center line L2 of the oil groove 1 can thereby be brought in the circumferential direction of the first sleeve opening 31 adjacent to the edge of the surface pressure region 312, so that the lubricating oil leaving the oil groove 1 can be quickly introduced into the surface pressure region 312 for better lubrication of the surface pressure region 312.
Optionally, the angle α between the center line L2 of the oil groove 1 and the first center line L1 of the rod part 2 is 30 degrees. This allows the lubricating oil leaving the oil sump 1 to rapidly enter the surface pressure region 312, so that the surface pressure region 312 is lubricated better.
As shown in fig. 3, the wall surface 11 of the oil groove 1 includes a first arc surface portion 111, a first flat surface portion 112, and a second flat surface portion 113, and the second flat surface portion 113 is located downstream of the first flat surface portion 112 in the circumferential direction of the first boss hole 31. That is, the second flat surface portion 113 is adjacent to the first center line L1 with respect to the first flat surface portion 112 in the counterclockwise direction of the circumferential direction of the first socket 31.
The first arc surface portion 111 has a first edge 1111 and a second edge 1112 opposite in a circumferential direction thereof, that is, the first edge 1111 and the second edge 1112 are opposite in the circumferential direction of the first arc surface portion 111. Alternatively, the first arc surface portion 111 may be an arc surface. Thereby, the processing difficulty of the oil groove 1 can be reduced.
The outer edge 1121 of the first planar portion 112 is connected to the first edge 1111, and the outer edge 1131 of the second planar portion 113 is connected to the second edge 1112. An inner edge 1132 of the second flat portion 113 is located downstream of an outer edge 1131 of the second flat portion 113 in the circumferential direction of the first sleeve hole 31. In other words, the inner edge 1132 of the second flat portion 113 is adjacent to the first center line L1 with respect to the outer edge 1131 of the second flat portion 113 in the counterclockwise direction of the circumferential direction of the first sleeve hole 31.
The outer edge 1121 of the first flat portion 112 refers to an edge of the first flat portion 112 away from the center of the first sleeve hole 31. An outer edge 1131 of the second flat portion 113 refers to an edge of the second flat portion 113 away from the center of the first eyelet 31, and an inner edge 1132 of the second flat portion 113 refers to an edge of the second flat portion 113 adjacent to the center of the first eyelet 31.
By locating the inner edge 1132 of the second flat surface portion 113 downstream of the outer edge 1131 of the second flat surface portion 113 in the circumferential direction of the first pocket 31, the second flat surface portion 113 can be disposed obliquely toward the face nip 312. Therefore, the second plane part 113 can be used for guiding the lubricating oil in the oil groove 1, so that the lubricating oil in the oil groove 1 can flow out of the oil groove 1 more favorably, a more effective oil film is formed between the wall surface 311 of the first sleeve hole 31 and the piston pin, the abrasion between the piston connecting part 3 (the connecting rod 100) and the piston pin is further reduced, and the reliability of the connecting rod 100 is further improved.
Optionally, the first plane part 112 is parallel to the center line L2 of the oil groove 1, the second plane part 113 forms an angle of 40-60 degrees with the center line L2 of the oil groove 1, and the angle β between the first plane part 112 and the second plane part 113 is 40-60 degrees. This further facilitates the flow of the lubricating oil in the oil groove 1 out of the oil groove 1 to form a more effective oil film between the wall surface 311 of the first bushing hole 31 and the piston pin.
The angle between the second flat portion 113 and the center line L2 of the oil groove 1 is 50 degrees, and the angle between the first flat portion 112 and the second flat portion 113 is 50 degrees. This further facilitates the flow of the lubricating oil in the oil groove 1 out of the oil groove 1 to form a more effective oil film between the wall surface 311 of the first bushing hole 31 and the piston pin.
The utility model discloses still provide refrigeration plant. According to the utility model discloses refrigeration plant includes according to the utility model discloses the compressor of above-mentioned embodiment.
Therefore, according to the utility model discloses refrigeration plant has advantages such as good reliability.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. A connecting rod for a compressor, comprising:
a stem having first and second ends opposite in a lengthwise direction thereof;
a piston connecting portion connected to the first end portion of the rod portion, the piston connecting portion having a first pocket hole, a wall surface of the first pocket hole having a face pressure region, the rod portion and the face pressure region being opposed to each other in a length direction of the rod portion, the face pressure region being at least partially overlapped with a connection point of the piston connecting portion and the first end portion of the rod portion in a circumferential direction of the first pocket hole, wherein a wedge-shaped oil groove is provided in the wall surface of the first pocket hole, the oil groove being located upstream of the face pressure region in the circumferential direction of the first pocket hole, the oil groove being adjacent to the face pressure region in the circumferential direction of the first pocket hole; and
the crankshaft connecting part is connected with the second end part of the rod part and is provided with a second sleeve hole.
2. The connecting rod for a compressor according to claim 1, wherein a first center line of the rod portion extends in a length direction of the rod portion, and an included angle between a center line of the oil groove and the first center line of the rod portion is greater than or equal to 30 degrees and less than or equal to 35 degrees.
3. The connecting rod for a compressor according to claim 2, wherein an angle between a center line of the oil groove and the first center line of the rod part is 30 degrees.
4. The connecting rod for a compressor according to claim 1, wherein the first center line of the rod portion extends in a length direction of the rod portion, and the wall surface of the oil groove includes:
a first arc surface portion having a first edge and a second edge opposite in a circumferential direction thereof;
the outer edge of the first plane part is connected with the first edge; and
a second flat portion located downstream of the first flat portion in a circumferential direction of the first trepan, an outer edge of the second flat portion being connected to the second edge, and an inner edge of the second flat portion being located downstream of the outer edge of the second flat portion in the circumferential direction of the first trepan.
5. The connecting rod for a compressor as claimed in claim 4, wherein the first plane part is parallel to a center line of the oil groove, the second plane part forms an angle of 40 degrees to 60 degrees with the center line of the oil groove, and the first plane part forms an angle of 40 degrees to 60 degrees with the second plane part.
6. The connecting rod for a compressor as claimed in claim 5, wherein the second plane portion forms an angle of 50 degrees with the center line of the oil groove, and the first plane portion forms an angle of 50 degrees with the second plane portion.
7. The connecting rod for a compressor as claimed in claim 4, wherein the first arc surface portion is an arc surface.
8. The connecting rod for a compressor as set forth in claim 1, wherein the oil groove penetrates the piston connecting portion in an axial direction of the first trepan.
9. A compressor, comprising:
a connecting rod for a compressor according to any one of claims 1 to 8;
a piston coupled to the connecting rod by a wrist pin, the wrist pin being disposed within a first bore of the connecting rod; and
and the eccentric journal of the crankshaft is arranged in the second sleeve hole of the connecting rod.
10. A refrigeration device, characterized by comprising a compressor according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021189022.4U CN212717054U (en) | 2020-06-23 | 2020-06-23 | Connecting rod for compressor and refrigeration equipment with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021189022.4U CN212717054U (en) | 2020-06-23 | 2020-06-23 | Connecting rod for compressor and refrigeration equipment with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212717054U true CN212717054U (en) | 2021-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021189022.4U Active CN212717054U (en) | 2020-06-23 | 2020-06-23 | Connecting rod for compressor and refrigeration equipment with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212717054U (en) |
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2020
- 2020-06-23 CN CN202021189022.4U patent/CN212717054U/en active Active
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