CN210799280U - Lubricating mechanism applied to crank connecting rod mechanism of refrigerator compressor - Google Patents
Lubricating mechanism applied to crank connecting rod mechanism of refrigerator compressor Download PDFInfo
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- CN210799280U CN210799280U CN201921179027.6U CN201921179027U CN210799280U CN 210799280 U CN210799280 U CN 210799280U CN 201921179027 U CN201921179027 U CN 201921179027U CN 210799280 U CN210799280 U CN 210799280U
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Abstract
The utility model relates to a lubricating mechanism applied to a crank-link mechanism of a refrigerator compressor, which comprises a piston, a piston pin, a connecting rod, a crank throw and a long shaft of the crankshaft, wherein the two ends of the connecting rod are provided with a big end of the connecting rod and a small end of the connecting rod, the middle part of the connecting rod (3) is provided with a communicating hole (10), the inner wall of the big end (14) of the connecting rod is provided with a first annular groove (9), and the inner wall of the small end (15) of the connecting rod is provided with a second; an oil delivery hole I (8) is arranged in the crankshaft crank throw (4), a spiral oil groove (7) is arranged in the crankshaft long shaft (5), an oil delivery hole II (12) is transversely arranged in the piston pin (2), and an oil outlet hole (13) communicated with the oil delivery hole II (12) is longitudinally arranged at the top of the piston pin; the first oil delivery hole (8) is communicated with the first annular groove (9), and the second oil delivery hole (12) is communicated with the second annular groove (11). The lubricating mechanism reduces the power consumption of the compressor and improves the performance of the compressor, thereby having wide market prospect.
Description
Technical Field
The utility model belongs to the technical field of the compressor spare and accessory part of refrigeration and specifically relates to a be applied to refrigerator compressor crank link mechanism's lubricating mechanism.
Background
Generally, reciprocating crank connecting rod refrigerator compressors rotate through a crankshaft, a connecting rod is driven through an eccentric shaft, rotary motion is converted into linear motion of a piston, the crank connecting rod plays a key role, most connecting rods of the reciprocating refrigerator compressors are of an integral structure, and the rotary motion is converted into the linear motion of the piston;
because the big end of the connecting rod is in clearance fit with the eccentric shaft, when the compressor runs, the connecting rod is in line contact with one end of the eccentric shaft, the frozen oil at the small clearance flows to the large clearance, the continuous fluid is damaged, and boundary friction is easily generated at the line contact position; meanwhile, due to the structure of the crank oil cup, lubricating oil of the crank is sprayed on the piston of the compressor in a splashing mode in a large amount, so that the reciprocating motion of the piston increases the circulation quantity of the compressor.
Disclosure of Invention
The utility model discloses a solve the prior art defect, provide a simple structure, can the effectual friction surface lubrication condition that improves, reduce compressor noise and vibration, promote the lubricating mechanism who is applied to refrigerator compressor crank link mechanism of compressor performance.
For solving the technical problem the utility model discloses a technical scheme does: the utility model provides a be applied to lubricated mechanism of refrigerator compressor crank link mechanism, includes piston, piston pin, connecting rod, bent axle crank throw, bent axle major axis, the connecting rod both ends are provided with connecting rod stub and connecting rod stub, the piston pin sets up in the connecting rod stub, the bent axle crank throw sets up in the connecting rod stub, the piston pin passes through the elastic pin and is connected with the piston, the bent axle crank throw and bent axle major axis integrated into one piece which characterized in that: the middle part of the connecting rod is provided with a communication hole, the inner wall of the big head of the connecting rod is provided with a first annular groove, and the inner wall of the small head of the connecting rod is provided with a second annular groove; an oil delivery hole I is formed in the crank throw of the crankshaft, a spiral oil groove is formed in the long shaft of the crankshaft, an oil delivery hole II is transversely formed in the piston pin, and an oil outlet hole communicated with the oil delivery hole II is longitudinally formed in the top of the piston pin; the first oil conveying hole is communicated with the first annular groove, and the second oil conveying hole is communicated with the second annular groove.
An embedded oil suction pipe is arranged at the bottom of the long shaft of the crankshaft.
The fit clearance between the big end of the connecting rod and the crank throw of the crankshaft is 11-16 mu m, and the fit clearance between the small end of the connecting rod (and the piston pin) is 3-6 mu m.
The width of the first annular groove is 6-11 mm, and the depth of the first annular groove is 2-4 mm; the width of the second annular groove is 5-11 mm, and the depth of the second annular groove is 2-3 mm.
The lower part of the embedded oil suction pipe is provided with a conical oil suction head, and the size of an oil inlet at the bottom of the oil suction head is phi 2.8-4.6 mm.
The utility model discloses following technological effect has: through this lubricating mechanism, lubricating oil can effectually inhale oil pipe hole centrifugation oil from embedded, and the spiral oil groove of bent axle major axis of flowing through oils, arrives the bent axle crank throw, through the oil storage tank between connecting rod big end and the bent axle crank throw, and the oil storage tank of piston pin and connecting rod small-end is reachd to the rethread intercommunicating pore, through the oil outlet of piston pin, flows to the piston surface. The lubricating mechanism ensures that all friction pairs of the compressor are lubricated by pure fluid, particularly, at the moment that the compressor stops, the thickness of an oil film between the friction pairs is ensured by the refrigerating oil in the oil storage tank, the normal lubrication is ensured, the power consumption of the compressor is reduced by 1.3W, the mechanical noise of the compressor is reduced by 1.3 decibels, the coefficient of performance COP is improved by 0.03, the reliability of the compressor is ensured, and the service life of the compressor is prolonged, so that the lubricating mechanism has a wide market prospect.
Drawings
Fig. 1 is a schematic structural view of the compressor crank link mechanism of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings 1 and the following detailed description:
a lubricating mechanism applied to a refrigerator compressor crank-connecting rod mechanism comprises a piston 1, a piston pin 2, a connecting rod 3, a crankshaft crank 4 and a crankshaft long shaft 5, wherein a connecting rod big end 14 and a connecting rod small end 15 are arranged at two ends of the connecting rod 3, the piston pin 2 is sleeved in the connecting rod small end 15, the crankshaft crank 4 is sleeved in the connecting rod big end 14, the piston pin 2 is connected with the piston 1 through an elastic pin, the crankshaft crank 4 and the crankshaft long shaft 5 are integrally formed, a communication hole 10 is cast in the middle of the connecting rod 3, an annular groove I9 is cast on the inner wall of the connecting rod big end 14, and an annular groove II 11 is cast on the inner wall of the connecting rod small end 15; an oil delivery hole I8 is drilled in the crankshaft crank throw 4, a spiral oil groove 7 is drilled in the crankshaft long shaft 5, an oil delivery hole II 12 is transversely drilled in the piston pin 2, and an oil outlet hole 13 communicated with the oil delivery hole II 12 is longitudinally drilled at the top of the piston pin; the first oil delivery hole 8 is communicated with the first annular groove 9, and the second oil delivery hole 12 is communicated with the second annular groove 11.
The bottom of the long shaft 5 of the crankshaft is sleeved with an embedded oil suction pipe 6, a conical oil suction head 16 is poured on the lower portion of the embedded oil suction pipe 6, and the size of an oil inlet at the bottom of the oil suction head 16 is phi 3.5 mm.
The fit clearance between the connecting rod big end 14 and the crank throw 4 is 13 μm, and the fit clearance between the connecting rod small end 15 and the piston pin 2 is 5 μm.
The width of the first annular groove 9 is 9mm, and the depth of the first annular groove is 3 mm; the width of the second annular groove 11 is 8mm, and the depth of the second annular groove is 2 mm.
The utility model discloses lubricated mechanism's application method does:
lubricating oil is centrifugally oiled through an embedded oil suction pipe 6 at the lower end of a crankshaft long shaft 5, reaches a helical oil groove 7 of the crankshaft long shaft, reaches a first annular groove 9 between a connecting rod big end 14 and the crankshaft crank 4 through a first oil conveying hole 8 of the crankshaft crank 4, then reaches a second annular groove 11 between a piston pin 2 and a connecting rod small end 15 through a communicating hole 10 of the connecting rod 3, flows through a second oil conveying hole 12 of the piston pin 2, and finally flows to the surface of the piston 1 through an oil outlet 13, so that the crankshaft crank 4, the connecting rod big end 14, the connecting rod small end 15 and the piston pin 2 are realized, friction between the piston 1 and a crankcase is pure fluid friction, particularly, at the moment of shutdown of a compressor, an oil storage structure of the connecting rod big end and the small end lubricates the big end and the small end of the connecting rod, the reliability of the compressor is greatly improved, the.
The above description is only the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and the technical solution and the inventive concept of the present invention should be covered by the protection scope of the present invention with equivalent replacement or change.
Claims (5)
1. The utility model provides a be applied to lubricated mechanism of refrigerator compressor crank link mechanism, includes piston, piston pin, connecting rod, bent axle crank throw, bent axle major axis, the connecting rod both ends are provided with connecting rod stub and connecting rod stub, the piston pin sets up in the connecting rod stub, the bent axle crank throw sets up in the connecting rod stub, the piston pin passes through the elastic pin and is connected with the piston, the bent axle crank throw and bent axle major axis integrated into one piece which characterized in that: a communication hole (10) is formed in the middle of the connecting rod (3), a first annular groove (9) is formed in the inner wall of a large connecting rod head (14), and a second annular groove (11) is formed in the inner wall of a small connecting rod head (15); an oil delivery hole I (8) is arranged in the crankshaft crank throw (4), a spiral oil groove (7) is arranged in the crankshaft long shaft (5), an oil delivery hole II (12) is transversely arranged in the piston pin (2), and an oil outlet hole (13) communicated with the oil delivery hole II (12) is longitudinally arranged at the top of the piston pin; the first oil delivery hole (8) is communicated with the first annular groove (9), and the second oil delivery hole (12) is communicated with the second annular groove (11).
2. The lubrication mechanism according to claim 1, wherein: an embedded oil suction pipe (6) is arranged at the bottom of the crankshaft long shaft (5).
3. The lubrication mechanism according to claim 1, wherein: the fit clearance between the connecting rod big end (14) and the crank throw (4) is 11-16 mu m, and the fit clearance between the connecting rod small end (15) and the piston pin (2) is 3-6 mu m.
4. The lubrication mechanism according to claim 1, wherein: the width of the first annular groove (9) is 6-11 mm, and the depth of the first annular groove is 2-4 mm; the width of the second annular groove (11) is 5-11 mm, and the depth is 2-3 mm.
5. The lubrication mechanism according to claim 2, wherein: the lower part of the embedded oil suction pipe (6) is provided with a conical oil suction head (16), and the size of an oil inlet at the bottom of the oil suction head (16) is phi 2.8-4.6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921179027.6U CN210799280U (en) | 2019-07-25 | 2019-07-25 | Lubricating mechanism applied to crank connecting rod mechanism of refrigerator compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921179027.6U CN210799280U (en) | 2019-07-25 | 2019-07-25 | Lubricating mechanism applied to crank connecting rod mechanism of refrigerator compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210799280U true CN210799280U (en) | 2020-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921179027.6U Active CN210799280U (en) | 2019-07-25 | 2019-07-25 | Lubricating mechanism applied to crank connecting rod mechanism of refrigerator compressor |
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| CN (1) | CN210799280U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117847170A (en) * | 2024-03-07 | 2024-04-09 | 浙江安吉华意科技有限公司 | Crankshaft connecting rod mechanism and crankcase |
-
2019
- 2019-07-25 CN CN201921179027.6U patent/CN210799280U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117847170A (en) * | 2024-03-07 | 2024-04-09 | 浙江安吉华意科技有限公司 | Crankshaft connecting rod mechanism and crankcase |
| CN117847170B (en) * | 2024-03-07 | 2024-05-14 | 浙江安吉华意科技有限公司 | Crankshaft connecting rod mechanism and crankcase |
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