Compression assembly and compressor with same

Abstract

The utility model provides a compression assembly and a compressor with the same, the compression assembly comprises: a crankshaft comprising a body and an eccentric part, the body is provided with an oil inlet and an oil duct, the body is provided with an oil storage structure, the oil inlet and the oil storage structure are both communicated with the oil duct, and the oil storage structure is located on the outer side wall of the body; the air cylinder assembly is provided with a compression cavity and an air inlet and an air outlet which are oppositely arranged, a sliding piece groove is formed in the side wall of the compression cavity, the air cylinder assembly is further provided with an oil discharging flow channel and a lubricating flow channel, one end of the oil discharging flow channel communicates with the oil storage structure, and the other end of the oil discharging flow channel penetrates through the side wall of the air cylinder assembly in the radial direction and communicates with the outside. One end of the lubricating flow channel communicates with the oil discharging flow channel, and the other end of the lubricating flow channel communicates with the sliding piece groove. By means of the technical scheme, the problems that in the prior art, the oil spitting rate of a compression assembly is high, the compressor is prone to oil shortage, the compression assembly is blocked, and normal work of the compressor is affected can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, and in particular, to a compression assembly and a compressor having the same. Background Art

[0002] The crankshaft is the part that cooperates with the most parts in the compressor. It cooperates with the upper and lower flanges, the rotor, the cylinder, etc. to form a compression assembly to compress the refrigerant. When the refrigerant is compressed, the oil in the crankshaft lubricates between the crankshaft and the flange, as well as between the sliding vane, the rotor and the cylinder.

[0003] In the prior art, most of the oil entering the compression chamber will be discharged from the exhaust passage outside the compressor along with the compressed refrigerant for circulation and cannot return to the inside of the compressor in time. This will reduce the oil storage in the oil sump inside the compressor, and the oil discharge rate of the compression assembly is relatively high. As a result, the compressor is in a lack of oil phenomenon. At this time, the oil cannot continuously lubricate the compression assembly, so that the contact stress between the crankshaft and the flange is too large, resulting in excessive wear between the crankshaft and the flange and prone to compressor jamming and shutdown phenomenon. Summary of the Utility Model

[0004] The utility model provides a compression assembly and a compressor having the same to solve the problem that in the prior art, the oil discharge rate of the compression assembly is relatively high, the compressor is prone to lack of oil, resulting in jamming of the compression assembly and affecting the normal operation of the compressor.

[0005] According to one aspect of the utility model, a compression assembly is provided. The compression assembly includes: a crankshaft, including a body and an eccentric part. The eccentric part is arranged in the middle of the body. The body has an oil inlet and an oil passage. The oil passage is located inside the body. The oil inlet is located at one end of the body. A oil storage structure is arranged on the body. Both the oil inlet and the oil storage structure are communicated with the oil passage. The oil storage structure is located on the outer side wall of the body; a cylinder assembly, having a compression chamber. The cylinder assembly has an air inlet and an air outlet arranged oppositely. Both the air inlet and the air outlet are communicated with the compression chamber. The crankshaft is arranged through the cylinder assembly. The eccentric part is located inside the compression chamber. A sliding vane groove is arranged on the side wall of the compression chamber. The opening of the sliding vane groove is communicated with the compression chamber. A oil discharge flow passage and a lubrication flow passage are also arranged on the cylinder assembly. One end of the oil discharge flow passage is communicated with the oil storage structure. The other end of the oil discharge flow passage penetrates the side wall of the cylinder assembly along the radial direction and is communicated with the outside. One end of the lubrication flow passage is communicated with the oil discharge flow passage. The other end of the lubrication flow passage is communicated with the sliding vane groove.

[0006] Further, the cylinder assembly includes: a cylinder, having a compression chamber. The sliding vane groove, the air inlet and the air outlet are all arranged on the cylinder; a sliding vane, located between the eccentric part and the cylinder. The sliding vane is movably arranged in the sliding vane groove; a first flange, located at the top of the cylinder. The crankshaft is arranged through the cylinder and the first flange. Both the oil discharge flow passage and the lubrication flow passage are arranged on the first flange.

[0007] Furthermore, the oil storage structure includes a first oil storage part and a circumferential flow groove that are interconnected. The first oil storage part is arranged corresponding to the first flange, the circumferential flow groove is arranged circumferentially on the outer side of the body, and the circumferential flow groove is communicated with the oil discharge flow channel.

[0008] Furthermore, the first oil storage part includes a first axial oil storage groove and a first oil outlet hole. The first axial oil storage groove is arranged on the side wall of the body along the axial direction of the body, the first oil outlet hole is located in the first axial oil storage groove, and the first oil outlet hole is communicated with the oil channel.

[0009] Furthermore, the first oil storage part further includes a first circumferential oil storage groove. The first circumferential oil storage groove is arranged on the side wall of the body along the circumferential direction of the body, the first circumferential oil storage groove is communicated with the first axial oil storage groove, and the first oil outlet hole is located at the intersection of the first axial oil storage groove and the first circumferential oil storage groove.

[0010] Furthermore, the crankshaft further includes a second flange. The second flange is located at the bottom of the cylinder. The oil storage structure further includes a second oil storage part, and the second oil storage part is arranged corresponding to the second flange.

[0011] Furthermore, the second oil storage part includes: a second axial oil storage groove arranged on the side wall of the body along the axial direction of the body; a second circumferential oil storage groove arranged on the side wall of the body along the circumferential direction of the body, and the second circumferential oil storage groove is communicated with the second axial oil storage groove; a second oil outlet hole located at the intersection of the second axial oil storage groove and the second circumferential oil storage groove, and the second oil outlet hole is communicated with the oil channel.

[0012] Furthermore, the body includes a first section and a second section. An eccentric part is arranged between the first section and the second section. The first flange is sleeved on the outer periphery of the first section. The first oil storage part and the circumferential flow groove are arranged on the first section. The second flange is sleeved on the outer periphery of the second section, and the second oil storage part is arranged on the second section.

[0013] Furthermore, the widths of both the first axial oil storage groove and the second axial oil storage groove are a, and the diameters of both the first section and the second section are b, where 0.12 > a / b > 0.08.

[0014] Furthermore, the widths of both the first axial oil storage groove and the second axial oil storage groove are a, the depths of both the first axial oil storage groove and the second axial oil storage groove are c, and the diameters of the first oil outlet hole and the second oil outlet hole are q, where 1.6 > q / a > 1.2 and 0.06 > c / b > 0.03.

[0015] Furthermore, the assembly length of the first flange on the first section is h, and the distance from the first oil outlet hole to the end face of the first section close to the second section is g, where 0.8 > g / h > 0.7; the assembly length of the second flange on the second section is j, and the distance from the second oil outlet hole to the end face of the second section far from the first section is f, where 0.8 > f / j > 0.7.

[0016] Further, there are a plurality of first axial oil storage grooves and a plurality of second axial oil storage grooves. The first oil outlet holes are arranged in one-to-one correspondence with the first axial oil storage grooves, and the second oil outlet holes are arranged in one-to-one correspondence with the second axial oil storage grooves. The plurality of first axial oil storage grooves are circumferentially spaced on the first section, and the plurality of second axial oil storage grooves are circumferentially spaced on the second section.

[0017] Further, there are a plurality of eccentric parts, and the plurality of eccentric parts are sequentially and spaced along the extending direction of the body on the body. There are a plurality of cylinders, and the cylinders are arranged in one-to-one correspondence with the eccentric parts.

[0018] According to another aspect of the present invention, a compressor is provided, and the compressor includes the above compression assembly.

[0019] Applying the technical solution of the present invention, when the compression assembly works, the oil in the oil storage tank will enter the oil passage from the oil inlet and flow to the oil storage structure to lubricate between the crankshaft and the cylinder assembly, and then flow into the oil discharge passage and flow out from the side wall of the cylinder assembly and return to the oil storage tank of the compressor. The side of the sliding vane groove close to the air inlet is the low-pressure side. The oil in the oil discharge passage will enter the compression chamber from the low-pressure side of the sliding vane groove to lubricate between the eccentric part and the cylinder assembly, and then be discharged from the air outlet together with the compressed refrigerant. In this way, part of the oil can be directly discharged back to the oil storage tank through the oil discharge passage, and another part of the oil will enter the compression chamber through the lubrication passage for lubrication and then be discharged from the air outlet of the compressor. Through the above settings, the amount of oil discharged from the air outlet to the outside of the compressor in the oil storage tank can be reduced, thereby increasing the circulation amount of the oil between the crankshaft and the oil storage tank, reducing the oil spitting rate of the compression assembly, reducing the possibility of oil shortage in the compression assembly, and thus being able to reduce the risk of the compression assembly getting stuck due to oil shortage and affecting the normal operation or even shutdown of the compressor. And in the case of oil shortage, the oil in the oil storage structure can be used to continue lubricating between the crankshaft and the cylinder assembly, reducing friction loss and improving the energy efficiency of the compressor at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The specification drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0021] Figure 1 The structural schematic diagram of the crankshaft provided by the present invention is shown;

[0022] Figure 2 The partial cross-sectional view of the compression assembly provided by the present invention is shown;

[0023] Figure 3Shows a partial cross-sectional view of the compression assembly provided by the present utility model from a top-down perspective;

[0024] Figure 4 Shows Figure 2 An enlarged view of area A in

[0025] Figure 5 Shows a partial cross-sectional view of the crankshaft provided by the present utility model;

[0026] Figure 6 Shows a partial cross-sectional view of the crankshaft provided by the present utility model.

[0027] Among them, the above-mentioned drawings include the following reference numerals:

[0028] 10. Crankshaft;

[0029] 20. Body;

[0030] 201. Oil inlet; 202. Oil passage;

[0031] 21. First section; 22. Second section;

[0032] 30. Eccentric part; 31. Rotor;

[0033] 40. Oil storage structure;

[0034] 41. First oil storage part; 42. Circumferential flow groove;

[0035] 410. First axial oil storage groove; 411. First oil outlet hole;

[0036] 412. First circumferential oil storage groove;

[0037] 43. Second oil storage part;

[0038] 431. Second axial oil storage groove; 432. Second circumferential oil storage groove;

[0039] 433. Second oil outlet hole;

[0040] 50. Cylinder assembly;

[0041] 501. Compression chamber; 5011. Low-pressure chamber; 5012. High-pressure chamber;

[0042] 502. Air inlet; 503. Air outlet;

[0043] 504. Slider groove;

[0044] 505. Oil discharge flow channel; 506. Lubrication flow channel;

[0045] 51. Cylinder; 52. Slider;

[0046] 53. First flange; 54. Second flange;

[0047] 60. Oil suction pipe;

[0048] 70. Oil guiding piece. Specific embodiments

[0049] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way constitutes a limitation on the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0050] As Figures 1 to 5 shown, an embodiment of the present invention provides a compression assembly, which includes: a crankshaft 10 and a cylinder assembly 50. Among them, the crankshaft 10 includes a body 20 and an eccentric portion 30. The eccentric portion 30 is disposed in the middle of the body 20. The body 20 has an oil inlet 201 and an oil passage 202. The oil passage 202 is located inside the body 20. The oil inlet 201 is located at one end of the body 20. A storage structure 40 is provided on the body 20. Both the oil inlet 201 and the storage structure 40 are communicated with the oil passage 202. The storage structure 40 is located on the outer side wall of the body 20. In this way, the storage structure can not only provide lubrication between the crankshaft 10 and the cylinder assembly 50, but also store a certain amount of oil for use when the oil is lacking. The cylinder assembly 50 has a compression chamber 501. The cylinder assembly 50 has an air inlet 502 and an air outlet 503 which are oppositely arranged. Both the air inlet 502 and the air outlet 503 are communicated with the compression chamber 501. The crankshaft 10 is inserted through the cylinder assembly 50. The eccentric portion 30 is located in the compression chamber 501. A sliding vane groove 504 is provided on the side wall of the compression chamber 501. The opening of the sliding vane groove 504 is communicated with the compression chamber 501. The cylinder assembly 50 is also provided with an oil drainage passage 505 and a lubrication passage 506. One end of the oil drainage passage 505 is communicated with the storage structure 40. The other end of the oil drainage passage 505 penetrates the side wall of the cylinder assembly 50 in the radial direction and is communicated with the outside. One end of the lubrication passage 506 is communicated with the oil drainage passage 505. The other end of the lubrication passage 506 is communicated with the sliding vane groove 504. Among them, a rotor 31 is provided outside the eccentric portion 30. When the crankshaft 10 rotates, it will drive the rotor 31 to move in the compression chamber 501.

[0051] Applying the technical solution of the present utility model, when the compression assembly works, the oil in the oil storage tank will enter the oil passage 202 from the oil inlet 201 and flow to the oil storage structure 40 to lubricate between the crankshaft 10 and the cylinder assembly 50, and then flow into the oil discharge passage 505 and flow out from the side wall of the cylinder assembly 50 and return to the oil storage tank of the compressor. The side of the sliding vane groove 504 close to the air inlet 502 is the low-pressure side. The oil in the oil discharge passage 505 will enter the compression chamber 501 from the low-pressure side of the sliding vane groove 504 to lubricate between the eccentric part 30 and the cylinder assembly 50, and then be discharged from the compression assembly together with the compressed refrigerant through the air outlet 503. In this way, part of the oil can be directly discharged back to the oil storage tank through the oil discharge passage 505, and the other part of the oil will enter the compression chamber through the lubrication passage 506 for lubrication and then be discharged from the air outlet 503 of the compressor. Through the above settings, the amount of oil discharged from the air outlet 503 to the outside of the compressor in the oil storage tank can be reduced, thereby increasing the circulation amount of the oil between the crankshaft 10 and the oil storage tank, reducing the oil spitting rate of the compression assembly, reducing the possibility of oil shortage in the compression assembly, and thus being able to reduce the risk of affecting the normal operation or even shutdown of the compressor due to oil shortage causing the compression assembly to jam. And in the case of oil shortage, the oil in the oil storage structure 40 can be used to continue lubricating between the crankshaft 10 and the cylinder assembly 50, reducing frictional losses and improving the energy efficiency of the compressor at the same time.

[0052] In this embodiment, the specific structure of the oil storage structure 40 is not limited. It can be arranged along the axial direction of the body 20, or along the circumferential direction of the body 20, or spirally wound around the outer periphery of the body 20 along the extending direction of the crankshaft 10. As long as it can lubricate between the crankshaft 10 and the cylinder assembly 50.

[0053] In this application, such as Figure 2 and Figure 3As shown, the compression chamber 501 has a relatively arranged low-pressure chamber 5011 and high-pressure chamber 5012. After the compression assembly sucks in low-pressure refrigerant from the intake port 502, when the rotor 31 rotates, it drives the low-pressure refrigerant to move and be compressed inside the compression chamber 501. Then, a low-pressure chamber 5011 is formed on the side close to the intake port 502, and a high-pressure chamber 5012 is formed on the side close to the outlet port 503. Thus, when the oil flows from the lubrication flow channel 506 into the sliding vane groove 504, it also first flows towards the side of the sliding vane groove 504 close to the low-pressure chamber 5011, then enters the compression chamber 501 and moves together with the refrigerant, and finally is discharged from the compression assembly through the outlet port 503 along with the compressed refrigerant. And the lubrication flow channel 506 is communicated with the low-pressure chamber 5011. In this way, the oil inlet 201, the oil discharge flow channel 505, and the lubrication flow channel 506 form a pressure relief channel, which can make the oil sucked in from the oil inlet 201 circulate faster, improving the oil absorption rate of the compression assembly. While enhancing the lubrication effect on the compression assembly, the heat generated inside the compression assembly can be taken away by the rapidly circulating oil, reducing the thermal deformation of the compression assembly. The direction of the arrow in the figure is the flow direction of the oil in the sliding vane groove 504 and the compression chamber 501, as well as the flow direction of the refrigerant in the compression chamber 501.

[0054] Specifically, as Figure 2 and Figure 3 shown, the cylinder assembly 50 includes: a cylinder 51, a sliding vane 52, and a first flange 53. Among them, the cylinder 51 has a compression chamber 501, and the sliding vane groove 504, the intake port 502, and the outlet port 503 are all arranged on the cylinder 51. The sliding vane 52 is located between the eccentric part 30 and the cylinder 51, and the sliding vane 52 is movably arranged in the sliding vane groove 504. Among them, the sliding vane 52 and the sliding vane groove 504 are elastically connected by a spring. In this way, it can be ensured that one end of the sliding vane 52 can always be in contact with the rotor 31, separating the high-pressure chamber 5012 and the low-pressure chamber 5011, and preventing the refrigerant from entering from the intake port 502 and flowing out from the intake port 502 again, so as to ensure the orderlyness of the refrigerant flow path. The first flange 53 is located at the top of the cylinder 51, the crankshaft 10 passes through the cylinder 51 and the first flange 53, and the oil discharge flow channel 505 and the lubrication flow channel 506 are both arranged on the first flange 53. In this way, the structural design of the cylinder assembly 50 is more reasonable and compact, without the need to additionally set up an oil discharge or lubrication assembly, reducing the structural volume of the compression assembly.

[0055] As Figure 1 and 4As shown, the oil storage structure 40 includes a first oil storage part 41 and a circumferential flow groove 42 that are interconnected. The first oil storage part 41 corresponds to the first flange 53. The first oil storage part 41 can lubricate the contact surface between the crankshaft 10 and the first flange 53 when the crankshaft 10 rotates, avoiding excessive wear between the crankshaft 10 and the first flange 53. The circumferential flow groove 42 is circumferentially arranged on the outer side of the body 20, and the circumferential flow groove 42 communicates with the oil drainage flow channel 505. The circumferential flow groove 42 can guide the oil in the first oil storage part 41, enabling the oil to flow smoothly into the oil drainage flow channel 505 and preventing blockage between the crankshaft 10 and the first flange 53.

[0056] Among them, the first oil storage part 41 includes a first axial oil storage groove 410 and a first oil outlet hole 411. The first axial oil storage groove 410 is arranged on the side wall of the body 20 along the axial direction of the body 20. This can increase the contact area between the first oil storage part 41 and the first flange 53. Thus, when the crankshaft 10 rotates, the oil in the first axial oil storage groove 410 can quickly cover the side walls of the body 20 and the first flange 53, enabling the space between the body 20 and the first flange 53 to be quickly filled with oil, enhancing the flow rate and lubrication rate of the oil. The first oil outlet hole 411 is located in the first axial oil storage groove 410, and the first oil outlet hole 411 communicates with the oil channel 202. In this way, after the oil flows out from the first oil outlet hole 411, it directly enters the first axial oil storage groove 410, simplifying the oil flow path and avoiding waste of oil.

[0057] As Figure 1 、 Figure 2 and Figure 5 shown, the first oil storage part 41 further includes a first circumferential oil storage groove 412. The first circumferential oil storage groove 412 is arranged along the circumferential direction of the body 20 and is arranged on the side wall of the body 20. The first circumferential oil storage groove 412 communicates with the first axial oil storage groove 410. In this way, the first circumferential oil storage groove 412 can cooperate with the first axial oil storage groove 410 to jointly provide oil for lubricating between the crankshaft 10 and the first flange 53, enhancing the lubrication effect and lubrication rate. And it can increase the oil storage capacity of the first oil storage part 41, reducing the oil shortage phenomenon of the compressor. The first oil outlet hole 411 is located at the intersection of the first axial oil storage groove 410 and the first circumferential oil storage groove 412. In this way, after the oil flows out from the first oil outlet hole 411, it can directly flow into the first axial oil storage groove 410 and the first circumferential oil storage groove 412 simultaneously, further enhancing the lubrication rate of the oil.

[0058] As Figure 1 and Figure 2As shown, in the present application, the cylinder assembly 50 further includes a second flange 54. The second flange 54 is located at the bottom of the cylinder 51, and the second flange 54 is fixedly connected to the first flange 53 and the cylinder 51 through fasteners. The oil storage structure 40 further includes a second oil storage part 43. The second oil storage part 43 is arranged corresponding to the second flange 54, and the second oil storage part 43 can lubricate the contact surface between the crankshaft 10 and the second flange 54. Through the above arrangement, the second oil storage part 43 and the first oil storage part 41 cooperate with each other to reduce the wear between the crankshaft 10 and the first flange 53 and the second flange 54, make the relative rotation between the crankshaft 10 and the first flange 53 and the second flange 54 smoother, and avoid the compression assembly from jamming and affecting the normal operation of the compressor.

[0059] Specifically, the second oil storage part 43 includes: a second axial oil storage groove 431, a second circumferential oil storage groove 432, and a second oil outlet hole 433. Among them, the second axial oil storage groove 431 is arranged on the side wall of the body 20 along the axial direction of the body 20. The second circumferential oil storage groove 432 is arranged on the side wall of the body 20 along the circumferential direction of the body 20, and the second circumferential oil storage groove 432 communicates with the second axial oil storage groove 431. The second oil outlet hole 433 is located at the intersection of the second axial oil storage groove 431 and the second circumferential oil storage groove 432, and the second oil outlet hole 433 communicates with the oil passage 202. Through the above design, the lubrication effect of the second oil storage part 43 on the contact surface between the crankshaft 10 and the second flange 54 can be improved.

[0060] As Figure 1 and Figure 2 shown, the body 20 includes a first section 21 and a second section 22. An eccentric part 30 is arranged between the first section 21 and the second section 22. The first flange 53 is sleeved on the outer periphery of the first section 21. The first oil storage part 41 and the circumferential flow groove 42 are arranged on the first section 21. The second flange 54 is sleeved on the outer periphery of the second section 22. The second oil storage part 43 is arranged on the second section 22. In this way, interference between various components of the compression assembly can be avoided, the rationality of the structural design of the crankshaft 10 is improved, and the lubrication effect of the compression assembly on the crankshaft 10 and the cylinder assembly is further improved.

[0061] As Figure 1 、 Figure 2 and Figure 6 shown, the widths of both the first axial oil storage groove 410 and the second axial oil storage groove 431 are a, and the diameters of both the first section 21 and the second section 22 are b, where 0.12 > a / b > 0.08. Through the above arrangement, while ensuring the clamping force between the crankshaft 10 and the first flange 53 and the second flange 54, the friction area between the crankshaft 10 and the first flange 53 and the second flange 54 can be reduced, thereby minimizing the frictional power consumption of the compressor and maximizing the energy efficiency.

[0062] Among them, when a / b ≤ 0.08 or a / b ≥ 0.12, the wear power of the crankshaft 10 will increase to varying degrees. Therefore, in this application, a / b is set between 0.08 and 0.12 to reduce the wear power consumption of the crankshaft 10. In this embodiment, a / b is set to 0.09, 0.1 or 0.11, and preferably set to 0.1, at which time the wear power consumption of the crankshaft 10 is the smallest.

[0063] Specifically, the widths of the first axial oil storage groove 410 and the second axial oil storage groove 431 are both a, the depths of the first axial oil storage groove 410 and the second axial oil storage groove 431 are both c, and the diameters of the first oil outlet hole 411 and the second oil outlet hole 433 are q. Among them, 1.6 > q / a > 1.2, 0.06 > c / b > 0.03. Through the above settings, the oil output of the first oil outlet hole 411 and the second oil outlet hole 433 can enable the oil storage structure 40 to complete effective oil storage, and the oil in the oil storage structure 40 can lubricate the contact surfaces of the crankshaft 10 with the first flange 53 and the second flange 54 during the operation under the heavy oil shortage condition, avoiding seizure caused by oil shortage wear between the crankshaft 10 and the first flange 53 and the second flange 54.

[0064] Among them, when q / a ≤ 1.2 or q / a ≥ 1.6, c / b ≤ 0.03 or c / b ≥ 0.06, the wear degree of the crankshaft 10 will increase to varying degrees. Therefore, in this application, q / a is set between 1.2 and 1.6, and c / b is set between 0.03 and 0.06, thus reducing the wear degree of the crankshaft 10. In this embodiment, q / a is set to 1.3, 1.4 or 1.5, c / b is set to 0.035, 0.04 or 0.05, and preferably q / a is set to 1.4 and c / b is set to 0.045, at which time the wear degree of the crankshaft 10 is the smallest.

[0065] Furthermore, the assembly length of the first flange 53 on the first section 21 is h, and the distance from the first oil outlet hole 411 to the end face of the first section 21 close to the second section 22 is g, where 0.8 > g / h > 0.7; the assembly length of the second flange 54 on the second section 22 is j, and the distance from the second oil outlet hole 433 to the end face of the second section 22 far from the first section 21 is f, where 0.8 > f / j > 0.7. Through the above settings, the first oil outlet hole 411 and the second oil outlet hole 433 are set upward, so that there is sufficient oil in the upper part of the oil storage structure 40, ensuring that there is always an oil film between the crankshaft 10 and the first flange 53 and the second flange 54, which can effectively isolate the leakage of the high-pressure refrigerant in the compression chamber 501 while ensuring the reliability of the crankshaft 10. And the clearance between the first flange 53 and the second flange 54 and the crankshaft 10 is reduced by 20 - 30% compared with the conventional compressor, the leakage amount is reduced, and the cooling capacity and energy efficiency are effectively improved.

[0066] Wherein, when g / h ≤ 0.7 or g / h ≥ 0.8, and f / j ≤ 0.7 or f / j ≥ 0.8, the amount of oil at the upper end of the oil storage structure 40 is less, and at the same time, the sealing performance of the compression chamber 501 will be affected. In this embodiment, g / h is set to 0.71, 0.73 or 0.78, preferably set to 0.75. At this time, the amount of oil stored in the oil storage structure 40 is relatively sufficient, and the formed oil film is the most suitable.

[0067] In this application, there are multiple first axial oil storage grooves 410 and multiple second axial oil storage grooves 431. The first oil outlet holes 411 are arranged in one-to-one correspondence with the first axial oil storage grooves 410, and the second oil outlet holes 433 are arranged in one-to-one correspondence with the second axial oil storage grooves 431. The multiple first axial oil storage grooves 410 are circumferentially spaced on the first section 21, and the multiple second axial oil storage grooves 431 are circumferentially spaced on the second section 22. With such an arrangement, the contact area between the oil in the oil storage structure 40 and the flange is further increased, and thus the lubrication efficiency and lubrication effect of the oil storage structure 40 can be further increased.

[0068] Wherein, there are multiple eccentric parts 30, and the multiple eccentric parts 30 are sequentially and spaced along the extension direction of the body 20 on the body 20. There are multiple cylinders 51, and partitions are arranged between adjacent cylinders 51. The cylinders 51 are arranged in one-to-one correspondence with the eccentric parts 30. In this application, there are two eccentric parts 30 and two cylinders 51, which is a double-cylinder compressor. In other embodiments of this application, the number of the eccentric parts 30 and the cylinders 51 can also be set to other numbers such as 1 or 3.

[0069] Specifically, the compression assembly further includes an oil suction pipe 60 and an oil guiding piece 70. The oil suction pipe 60 is arranged at the bottom of the second section 22. One end of the oil suction pipe 60 is communicated with the oil passage 202, and the other end of the oil suction pipe 60 forms an oil inlet 201. The oil guiding piece 70 is arranged between the oil suction pipe 60 and the oil passage 202, and the outer periphery of the oil guiding piece 70 has a spiral structure, which can guide the flow direction of the oil.

[0070] In another embodiment of the present utility model, a compressor is provided, and this compressor includes the compression assembly in the above embodiment. The above compression assembly can effectively solve the problems in the prior art that the oil spitting rate of the compression assembly is relatively high, the compressor is prone to oil shortage, resulting in jamming of the compression assembly and thus affecting the normal operation of the compressor. The compressor with the above compression assembly also has the above advantages.

[0071] The compression assembly and compressor provided by this application can be applied to complex scenarios with severe working conditions, such as during low-temperature static startup. When the superheat degree has not been established at the initial stage of compressor startup, the refrigeration oil will be discharged from the compressor in large quantities along with the refrigerant, resulting in an oil shortage. At this time, the compression assembly can only be lubricated by a small amount of refrigeration oil inside it before. If the superheat degree is established slowly and the refrigeration oil does not flow back to the compressor, it is very easy for the crankshaft to wear due to oil shortage, resulting in reliability problems. The compression assembly provided by this application can ensure that the crankshaft and flange structure have sufficient oil lubrication under various extreme and severe oil shortage conditions, guarantee the reliability of the crankshaft, reduce the friction loss and leakage between the flange and the crankshaft, and improve the energy efficiency of the compressor. Among them, the compression assembly of this application is applicable to rotary compressors, and both single-stage rotary compressors and multi-stage rotary compressors are applicable.

[0072] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to this application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0073] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that for the convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0074] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal", and "top, bottom" are usually based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Without contrary instructions, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0075] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations for the spatial relative descriptions used herein will be made accordingly.

[0076] In addition, it should be noted that the use of terms such as "first" and "second" to define components is only for the convenience of differentiating the corresponding components. Without further statement, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present utility model.

[0077] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A compression component, characterized in that, The compression assembly includes: A crankshaft (10), comprising a body (20) and an eccentric portion (30). The eccentric portion (30) is disposed in the middle of the body (20). The body (20) has an oil inlet (201) and an oil passage (202). The oil passage (202) is located inside the body (20). The oil inlet (201) is located at one end of the body (20). A oil storage structure (40) is provided on the body (20). The oil inlet (201) and the oil storage structure (40) are both communicated with the oil passage (202). The oil storage structure (40) is located on the outer sidewall of the body (20); A cylinder assembly (50), having a compression chamber (501). The cylinder assembly (50) has an air inlet (502) and an air outlet (503) which are oppositely arranged. The air inlet (502) and the air outlet (503) are both communicated with the compression chamber (501). The crankshaft (10) is inserted through the cylinder assembly (50). The eccentric portion (30) is located in the compression chamber (501). A sliding vane groove (504) is provided on the sidewall of the compression chamber (501). The opening of the sliding vane groove (504) is communicated with the compression chamber (501). An oil drainage flow channel (505) and a lubrication flow channel (506) are further provided on the cylinder assembly (50). One end of the oil drainage flow channel (505) is communicated with the oil storage structure (40). The other end of the oil drainage flow channel (505) penetrates through the sidewall of the cylinder assembly (50) in the radial direction and is communicated with the outside. One end of the lubrication flow channel (506) is communicated with the oil drainage flow channel (505). The other end of the lubrication flow channel (506) is communicated with the sliding vane groove (504).

2. The compression assembly according to claim 1, wherein The cylinder assembly (50) includes: A cylinder (51), which has the compression chamber (501). The sliding vane groove (504), the air inlet (502) and the air outlet (503) are all provided on the cylinder (51); A sliding vane (52), located between the eccentric portion (30) and the cylinder (51). The sliding vane (52) is movably arranged in the sliding vane groove (504); A first flange (53), located at the top of the cylinder (51). The crankshaft (10) is inserted through the cylinder (51) and the first flange (53). The oil drainage flow channel (505) and the lubrication flow channel (506) are both provided on the first flange (53).

3. The compression assembly according to claim 2, wherein, The oil storage structure (40) includes a first oil storage portion (41) and a circumferential flow groove (42) which are communicated with each other. The first oil storage portion (41) is arranged corresponding to the first flange (53). The circumferential flow groove (42) is circumferentially arranged on the outside of the body (20). The circumferential flow groove (42) is communicated with the oil drainage flow channel (505).

4. The compression assembly according to claim 3, wherein The first oil storage part (41) includes a first axial oil storage groove (410) and a first oil outlet hole (411). The first axial oil storage groove (410) is arranged on the side wall of the body (20) along the axial direction of the body (20), and the first oil outlet hole (411) is located in the first axial oil storage groove (410). The first oil outlet hole (411) communicates with the oil passage (202).

5. The compression assembly according to claim 4, wherein The first oil storage part (41) further includes a first circumferential oil storage groove (412). The first circumferential oil storage groove (412) is arranged on the side wall of the body (20) along the circumferential direction of the body (20), and the first circumferential oil storage groove (412) communicates with the first axial oil storage groove (410). The first oil outlet hole (411) is located at the intersection of the first axial oil storage groove (410) and the first circumferential oil storage groove (412).

6. The compression assembly according to claim 5, wherein The cylinder assembly (50) further includes a second flange (54). The second flange (54) is located at the bottom of the cylinder (51). The oil storage structure (40) further includes a second oil storage part (43), and the second oil storage part (43) is arranged corresponding to the second flange (54).

7. The compression assembly according to claim 6, wherein The second oil storage part (43) includes: A second axial oil storage groove (431), which is arranged on the side wall of the body (20) along the axial direction of the body (20); A second circumferential oil storage groove (432), which is arranged on the side wall of the body (20) along the circumferential direction of the body (20), and the second circumferential oil storage groove (432) communicates with the second axial oil storage groove (431); A second oil outlet hole (433), which is located at the intersection of the second axial oil storage groove (431) and the second circumferential oil storage groove (432), and the second oil outlet hole (433) communicates with the oil passage (202).

8. The compression assembly according to claim 7, wherein The body (20) includes a first section (21) and a second section (22). The eccentric part (30) is arranged between the first section (21) and the second section (22). The first flange (53) is sleeved on the outer periphery of the first section (21). The first oil storage part (41) and the circumferential flow groove (42) are arranged on the first section (21). The second flange (54) is sleeved on the outer periphery of the second section (22), and the second oil storage part (43) is arranged on the second section (22).

9. The compression assembly according to claim 8, wherein The widths of both the first axial oil storage groove (410) and the second axial oil storage groove (431) are a, and the diameters of both the first section (21) and the second section (22) are b, where 0.12 > a / b > 0.

08.

10. The compression assembly according to claim 7, wherein, The widths of both the first axial oil storage groove (410) and the second axial oil storage groove (431) are a, the depths of both the first axial oil storage groove (410) and the second axial oil storage groove (431) are c, and the diameters of the first oil outlet hole (411) and the second oil outlet hole (433) are q, where 1.6 > q / a > 1.2 and 0.06 > c / b > 0.

03.

11. The compression assembly according to claim 8, wherein The assembly length of the first flange (53) on the first section (21) is h, and the distance from the first oil outlet hole (411) to the end face of the first section (21) close to the second section (22) is g, where 0.8 > g / h > 0.7; The assembly length of the second flange (54) on the second section (22) is j, and the distance from the second oil outlet hole (433) to the end face of the second section (22) away from the first section (21) is f, where 0.8 > f / j > 0.

7.

12. The compression assembly according to claim 8, wherein, Both the first axial oil storage groove (410) and the second axial oil storage groove (431) have a plurality of them. The first oil outlet hole (411) is arranged in one-to-one correspondence with the first axial oil storage groove (410), and the second oil outlet hole (433) is arranged in one-to-one correspondence with the second axial oil storage groove (431). The plurality of first axial oil storage grooves (410) are circumferentially spaced on the first section (21), and the plurality of second axial oil storage grooves (431) are circumferentially spaced on the second section (22).

13. The compression assembly according to claim 2, wherein, There are a plurality of eccentric parts (30). The plurality of eccentric parts (30) are sequentially and spaced along the extension direction of the body (20) on the body (20). There are a plurality of cylinders (51), and the cylinders (51) are arranged in one-to-one correspondence with the eccentric parts (30).

14. A compressor, characterized in that, The compressor includes the compression assembly according to any one of claims 1 to 13.

Images