Lubricating oil storage tank structure for compressor

Abstract

The utility model relates to a lubricating oil storage tank structure for a compressor, which is characterized by comprising a compressor shell, a crankshaft, a connecting rod and a piston, the crankshaft, the connecting rod and the piston are arranged in the compressor shell, a lubricating oil storage tank with an oil storage cavity is arranged at the bottom of the compressor shell, and the lower portion of the crankshaft extends into the oil storage cavity. A second lubricating oil channel communicated with the first lubricating oil channel and the oil storage cavity in the crankshaft body is arranged in the lubricating oil storage tank; a wave dissipation ring is arranged at the position, higher than the oil storage liquid level and lower than the lower end of the crankshaft, in the oil storage cavity, the outer circumferential wall of the wave dissipation ring abuts against the inner circumferential wall of the oil storage cavity, and a through opening is formed in the center of the wave dissipation ring. The lubricating oil storage tank for the compressor is reasonable in structural design, liquid level stability of a compressor lubricating system is guaranteed, and the risk of damage to relative moving parts such as a compressor crankshaft and a connecting rod is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a compressor technical field, especially a kind of lubricating oil storage tank structure for compressor. BACKGROUND

[0002] At present, refrigeration compressor is widely used in cold chain transportation field, in the transportation process, there is inevitable jolt and shake etc. situation;Intense jolt can make the lubricating oil level in the oil tank of compressor unstable, when the liquid level swing amplitude is too large, the oil inlet position of lubricating system in compressor will be in no oil or oil gas mixture state, it is easy to cause the lubricating system of compressor to be short of oil, cause crankshaft, connecting rod and other relative motion parts to be short of oil and jammed etc. fault, therefore, stabilizing the lubricating oil level in the oil tank is an important prerequisite for ensuring the stable operation of compressor.

[0003] At present, search to Chinese patent "compressor" announcement number CN110273837A, the compressor includes pump body and shell, pump body is arranged in shell, pump body includes crankshaft, compressor also includes: partition component, with shell connection, pump body is connected with partition component and is movably arranged along vertical direction relative to partition component, to drive the oil suction port of crankshaft to move along vertical direction, to absorb the lubricating oil of shell bottom, the compressor of this application although solves the problem of no oil supplement caused by insufficient oil return of compressor in prior art;But its structure is complex, and the manufacturing cost is high. SUMMARY

[0004] In view of the above-mentioned deficiencies of prior art, the purpose of the utility model is to provide a kind of lubricating oil storage tank structure for compressor, the lubricating oil storage tank structure for compressor is reasonable in design, it is favorable to guarantee that the lubricating system level of compressor is stable, reduces the risk of damage of compressor crankshaft, connecting rod and other relative motion parts.

[0005] The technical scheme adopted by the utility model to solve the above technical problems is:

[0006] The utility model is used for the lubricating oil storage tank structure of compressor, it is characterized by including compressor shell, the crankshaft, connecting rod and piston being arranged in compressor shell, the bottom of compressor shell is equipped with the lubricating oil storage tank of having oil storage cavity, the lower part of crankshaft is inserted into oil storage cavity, the second lubricating oil passage that is communicated with the first lubricating oil passage in crankshaft body and oil storage cavity is equipped in the lubricating oil storage tank;The position of the higher oil storage liquid level and lower crankshaft lower end in oil storage cavity is equipped with wave-damping ring, the outer peripheral wall of wave-damping ring is in abutment with the inner peripheral wall of oil storage cavity, and the center of wave-damping ring has a through port.

[0007] Preferably, the shape of the through port is circular, oval or rectangular.

[0008] Preferably, the outer peripheral wall of the wave-damping ring and the peripheral wall of the through hole are equidistantly spaced along the entire circumference of the wave-damping ring.

[0009] Preferably, the outer peripheral wall of the wave-damping ring and the inner peripheral wall of the oil storage cavity are fixed by welding, riveting or integrated forming.

[0010] Preferably, the wave-damping ring is a ring-shaped plate with a thickness of 0.3-3 cm.

[0011] Preferably, the compressor housing is sleeved with a cylinder sleeve body having a piston cavity for guiding the lifting movement of the piston, and the compressor housing is provided with a valve plate having an exhaust valve and an intake valve, the lower surface of the valve plate abuts against the piston cavity, and the inner wall surface of the cylinder sleeve body port, the outer wall surface of the piston and the end surface of the valve plate form a buffer cavity when the piston moves to the top dead center position.

[0012] Preferably, the buffer cavity is arranged along the entire circumferential direction of the cylinder sleeve body to facilitate gas diffusion.

[0013] Preferably, one wall surface of the buffer cavity is a horn-shaped conical surface, a horn-shaped circular arc surface or a stepped surface located at the cylinder sleeve body port and abutting against the wall surface of the piston cavity.

[0014] Preferably, the horn-shaped conical surface forms an included angle of 50-65 degrees with the axis of the piston cavity.

[0015] Preferably, the outer peripheral wall of the cylinder sleeve body is stepped and integrated with the compressor housing.

[0016] The utility model discloses a lubricating oil storage tank structure of compressor is set up wave-damping ring above the oil level of lubricating oil storage tank, when the surge of lubricating oil is produced by jolt, and the lubricating oil splashed is blocked by wave-damping ring, as Figure 2 The lubricating oil liquid level is not easy to produce larger fluctuation, can make the oil inlet (the oil inlet of second lubricating oil passage) of lubricating system always keep in lubricating oil, to guarantee oil supply is sufficient, is favorable to guarantee that the compressor lubricating system gets oil material full lubrication, reduces the risk of damage of compressor crankshaft, connecting rod and other relative motion parts. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model discloses further illustrate in combination with the drawings and examples.

[0018] Figure 1 It is the lubricating oil liquid level schematic diagram of the storage tank shaking when not setting up wave-damping ring;

[0019] Figure 2 It is the lubricating oil liquid level schematic diagram of the storage tank shaking after installing wave-damping ring of the utility model;

[0020] Figure 3The utility model is a structure schematic drawing of compressor;

[0021] Figure 4 The utility model is a structure schematic drawing of compressor;

[0022] Figure 5 The utility model is a structure schematic drawing of compressor;

[0023] Figure 6 The utility model is a structure schematic drawing of compressor;

[0024] Figure 7 、 8 The utility model is a structure schematic drawing of compressor;

[0025] Figure: 1, lubricating oil storage tank, 2, wave breaker, 21, through the mouth, 3, crankshaft, 4, connecting rod, 5, compressor housing, 6, piston, 7, oil storage cavity, 8, first lubricating oil passage, 9, second lubricating oil passage, 91, oil inlet, 92, oil return, 10, cylinder liner, 11, piston cavity, 12, valve plate, 13, buffer cavity, 14, inner wall surface. DETAILED DESCRIPTION

[0026] The utility model is used for lubricating oil storage tank structure of compressor, including compressor housing 5, be located in the crankshaft 3, connecting rod 4 and piston 6 of compressor housing, the bottom of compressor housing is equipped with the lubricating oil storage tank 1 of having oil storage cavity 7, the lower part of crankshaft 3 enters oil storage cavity 7, be equipped with with the second lubricating oil passage 9 of first lubricating oil passage 8 in the crankshaft body and oil storage cavity 7 intercommunication in the lubricating oil storage tank, the second lubricating oil passage 9 has oil inlet 91 and oil return 92, the above-mentioned content is prior art, here do not make tedious.

[0027] The specific technical scheme contents of the application are as follows: the wave breaker 2 is arranged at the position higher than the oil level and lower than the lower end of the crankshaft in the oil storage cavity 7, the wave breaker can be an annular plate with a thickness of 0.3-3 cm, the outer peripheral wall of the wave breaker abuts against the inner peripheral wall of the oil storage cavity, and the center of the wave breaker has a through hole 21.

[0028] When the lubricating oil is agitated due to jolt, the splashed lubricating oil is blocked by the wave breaker, the lubricating oil level is not prone to large fluctuation, the oil inlet of the lubricating oil system (the oil inlet 91 of the second lubricating oil passage) can always be kept in the lubricating oil, so as to ensure sufficient oil supply of the lubricating system (including the crankshaft, the connecting rod, etc.), which is conducive to ensuring that the lubricating system of the compressor is fully lubricated by oil, and reducing the risk of damage of the relative moving parts of the crankshaft, the connecting rod, etc.

[0029] The shape of the through hole 21 can be circular, oval, rectangular, or the like; or the outer peripheral wall of the wave elimination ring and the peripheral wall surface of the through hole are equidistant along the entire circumference of the wave elimination ring, that is, the value of D in the figure is fixed, so that the shape of the through hole is the same as the inner peripheral wall of the oil storage cavity. This design can effectively reduce the oil level fluctuation caused by shaking in various horizontal directions.

[0030] The outer peripheral wall of the wave elimination ring and the inner peripheral wall of the oil storage cavity can be fixed by welding, riveting, or integrated molding.

[0031] In addition, for the piston compressor, when the piston 6 reciprocates in the cylinder sleeve body 10, the temperature and pressure in the cylinder sleeve body will undergo drastic alternating changes. The sharply changing temperature and pressure are easy to cause the rupture of the gas valve (exhaust valve or suction valve) in the cylinder sleeve body, causing the piston ring to be stuck. Therefore, in order to stabilize the temperature and pressure state of the gas in the cylinder, prevent the damage of the compressor valve and the piston ring, the cylinder sleeve body 10 is sleeved in the compressor shell 5, the cylinder sleeve body has a piston cavity 11 for guiding the lifting movement of the piston, the compressor shell is provided with a valve plate 12 having an exhaust valve A and a suction valve B, the lower surface of the valve plate abuts against the piston cavity 11, and the inner wall surface 14 of the cylinder sleeve port, the outer wall surface of the piston and the end surface of the valve plate form a buffer cavity 13 when the piston 6 in the cylinder sleeve body moves to the top dead center position.

[0032] The above-mentioned buffer cavity is arranged along the entire circumferential direction of the cylinder sleeve body, that is, the buffer cavity 8 extends to the entire circumference of the cylinder sleeve body, thereby facilitating the diffusion of the gas.

[0033] The wall surface (i.e. the inner wall surface 14) of the buffer cavity is a horn-shaped conical surface located at the port of the cylinder sleeve body and abutting against the wall surface of the piston cavity, the horn-shaped conical surface forms an angle of 50-65 degrees with the axis of the piston cavity. Of course, the wall surface (i.e. the inner wall surface 14) of the buffer cavity can also be an arc surface, a spherical surface or a stepped surface (such as shown in Figure 7 、 8 ).

[0034] The outer peripheral wall of the cylinder sleeve body is stepped and is integrated with the compressor shell. The cylinder sleeve body and the compressor shell 5 can be fixed by interference fit.

[0035] When the piston compressor is in operation, the piston reciprocates and lifts in the cylinder liner body, when the piston moves to the top dead center, the gas is compressed in the piston cavity to form high-temperature and high-pressure gas, the high-temperature and high-pressure of the compressor will be discharged from the exhaust valve, due to the existence of the buffer cavity of the cylinder liner body port, part of the high-temperature and high-pressure gas will not be completely discharged and stored in the buffer cavity of the cylinder liner body port; when the piston moves to the bottom dead center, the low-temperature and low-pressure gas enters the inside of the cylinder liner body (i.e. the piston cavity) from the suction valve, at this time, the high-temperature and high-pressure gas stored in the buffer cavity mixes with the newly entered low-temperature and low-pressure gas, the pressure and temperature of the newly entered gas are compensated, so as to achieve the purpose of stabilizing the temperature and pressure in the cylinder, thereby being beneficial to preventing the damage of the compressor valve and the piston ring and reducing the economic loss.

[0036] The preferred embodiments of the utility model are described above only, and are not used for limiting the utility model, for the person skilled in the art, the utility model can have various changes and changes.

Claims

1. A lubricating oil reservoir structure for a compressor, characterized by: The compressor housing is provided with a lubricating oil storage tank with an oil storage cavity in the bottom of the compressor housing, the lower part of the crankshaft extends into the oil storage cavity, the lubricating oil storage tank is provided with a second lubricating oil passage in communication with the first lubricating oil passage in the crankshaft body and the oil storage cavity; the oil storage cavity is provided with a wave elimination ring at a position higher than the oil storage liquid level and lower than the lower end of the crankshaft, the outer peripheral wall of the wave elimination ring abuts against the inner peripheral wall of the oil storage cavity, and the center of the wave elimination ring has a through opening.

2. The lubricating oil reservoir structure for a compressor according to claim 1, characterized by: The shape of the through opening is circular, oval or rectangular.

3. The lubricating oil reservoir structure for a compressor according to claim 1, characterized by: The outer peripheral wall of the wave elimination ring and the peripheral wall surface of the through opening are equidistant in the entire circumferential direction of the wave elimination ring.

4. The lubricating oil reservoir structure for a compressor according to claim 1, 2 or 3, characterized in that: The outer peripheral wall of the wave elimination ring and the inner peripheral wall of the oil storage cavity are fixed by welding, riveting or integrated forming.

5. The lubricating oil reservoir structure for a compressor according to claim 4, characterized in that: The wave elimination ring is an annular plate with a thickness of 0.3-3 cm.

6. The lubricating oil reservoir structure for a compressor according to claim 4, characterized in that: The compressor housing is provided with a cylinder sleeve body, the cylinder sleeve body has a piston cavity for guiding the lifting movement of the piston, the compressor housing is provided with a valve plate with an exhaust valve and an intake valve, the lower surface of the valve plate abuts against the piston cavity, and the inner wall surface of the cylinder sleeve body port, the outer wall surface of the piston and the end surface of the valve plate form a buffer cavity when the piston in the cylinder sleeve body moves to the top dead center position.

7. The lubricating oil reservoir structure for a compressor according to claim 6, characterized in that: The buffer cavity is arranged along the entire circumferential direction of the cylinder sleeve body to facilitate gas diffusion.

8. The lubricating oil reservoir structure for a compressor according to claim 6, characterized by: One wall surface of the buffer cavity is a horn-shaped conical surface, a horn-shaped circular arc surface or a stepped surface located at the cylinder sleeve body port and connected with the piston cavity wall surface.

9. The lubricating oil reservoir structure for a compressor according to claim 8, characterized by: The horn-shaped conical surface forms an angle of 50-65 degrees with the axis of the piston cavity.

10. The lubricating oil reservoir structure for a compressor according to claim 6, characterized by: The outer peripheral wall of the cylinder sleeve body is stepped and integrated with the compressor housing.

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