Crankshaft arrangement, compressor and refrigeration appliance

Abstract

The application provides a crankshaft device, a compressor and a refrigeration device, the crankshaft device is used for the compressor, the compressor comprises a driving assembly and a pump body assembly, and the crankshaft device comprises: a first shaft part used for connecting the driving assembly, wherein the first shaft part is provided with a first oil supply channel; a second shaft part connected with the first shaft part and used for connecting the pump body assembly, wherein the second shaft part is provided with a second oil supply channel, and the second oil supply channel is communicated with the first oil supply channel; wherein the flow area of at least part of the first oil supply channel is smaller than the flow area of the second oil supply channel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of a crankshaft device, in particular to a crankshaft device, a compressor and a refrigeration equipment. BACKGROUND

[0002] A rotary compressor transports oil in an oil pool to components such as a crankshaft, a cylinder and a piston in sliding cooperation with the crankshaft through the rotational movement of a crankshaft core, i.e. a centrifugal oil supply method. The generated oil pumping amount is proportional to the inner diameter of a pumping cavity of the crankshaft, the rotational speed and the oil surface height of the oil pool.

[0003] At present, in the compressor in the related art, a through hole is arranged in the crankshaft core to prevent the pressure of the pumping cavity from rapidly changing. However, when the compressor is in high-flow operation, the oil in the oil pool also rapidly enters the upper cavity through the through hole, which causes problems such as an increase in the oil discharge amount of the compressor, a decrease in the oil surface of the oil pool and an insufficient oil amount. SUMMARY

[0004] Embodiments of the present application aim to at least solve one of the technical problems existing in the prior art.

[0005] To this end, a first aspect of embodiments of the present application provides a crankshaft device.

[0006] A second aspect of embodiments of the present application provides a compressor.

[0007] A third aspect of embodiments of the present application provides a refrigeration equipment.

[0008] Therefore, according to a first aspect of embodiments of the present application, a crankshaft device is provided, the crankshaft device is used in a compressor, the compressor comprises a driving assembly and a pumping body assembly, and the crankshaft device comprises: a first shaft part configured to connect the driving assembly, the first shaft part being provided with a first oil supply passage; a second shaft part connected with the first shaft part and configured to connect the pumping body assembly, the second shaft part being provided with a second oil supply passage, and the second oil supply passage being in communication with the first oil supply passage; and wherein the flow area of at least part of the first oil supply passage is smaller than the flow area of the second oil supply passage.

[0009] The crankshaft device provided by the embodiments of the present application comprises a first shaft part and a second shaft part, specifically, the first shaft part is connected with the second shaft part, the first shaft part is configured to connect the driving assembly, and the second shaft part is configured to connect the pumping body assembly. It can be understood that under the driving of the driving assembly, the crankshaft device can drive part of the pumping body assembly to move to compress gas.

[0010] Optionally, the pump body assembly comprises a cylinder and a piston, the piston is connected with the second shaft part, and the piston is located in the cylinder. Under the driving of the driving assembly, the crankshaft device drives the piston to move in the cylinder to compress the gas. The compressed high-temperature and high-pressure gas is discharged to the exhaust chamber through the exhaust port of the pump body assembly, flows through the through-flow hole of the driving assembly into the upper chamber (the first area), and is finally discharged to the outside of the shell through the gas outlet, thereby completing the process from compression to exhaust of the gas.

[0011] The first shaft part is provided with a first oil supply channel, the second shaft part is provided with a second oil supply channel, and the second oil supply channel is in communication with the first oil supply channel. It can be understood that, in the process of driving the piston by the crankshaft device, the lubricating oil in the bottom oil pool of the compressor supplies oil to the pump body assembly through the second oil supply channel and the first oil supply channel, so as to provide lubricating oil for the sliding parts of the pump body assembly and ensure the reliable operation of the compressor.

[0012] In the related art, a through hole is arranged at the end of the crankshaft away from the pump body assembly to prevent the pressure of the pump chamber from changing sharply. In the process of operation of the compressor, the lubricating oil in the bottom oil pool flows through the second oil supply channel and the first oil supply channel in turn, enters the upper chamber through the through hole, and then flows back to the bottom oil pool through the through-flow hole on the driving assembly. When the compressor is operated at high flow rate, the lubricating oil quickly enters the upper chamber through the through hole, which causes the oil discharge amount of the compressor to increase.

[0013] The through-flow cross-sectional area of at least part of the first oil supply channel is smaller than the through-flow cross-sectional area of the second oil supply channel, that is, when the lubricating oil in the bottom oil pool enters the first oil supply channel through the second oil supply channel, the through-flow cross-sectional area of the first oil supply channel is reduced, so that the lubricating oil entering the upper chamber can be effectively reduced while ensuring that the pump body assembly is supplied with oil, thereby reducing the oil discharge amount of the compressor, improving the stability and reliability of the compressor when operated at high flow rate, and improving the oil level stability.

[0014] Optionally, the through-flow cross-sectional area of at least part of the first oil supply channel is equal to 0, that is, when the lubricating oil in the bottom oil pool enters the first oil supply channel through the second oil supply channel, the lubricating oil cannot directly enter the upper chamber through the first oil supply channel, that is, the first oil supply channel is completely blocked, that is, the first oil supply channel is not through. Therefore, the lubricating oil can be prevented from directly entering the upper chamber of the compressor, the oil discharge amount of the compressor can be further reduced, the stability and reliability of the compressor when operated at high flow rate can be improved, and the oil level stability can be improved.

[0015] In addition, the crankshaft device provided by the above technical scheme of the present application also has the following additional technical features:

[0016] In some technical schemes, the crankshaft device further comprises a blocking piece, the blocking piece is arranged in the first shaft part and located in the first oil supply channel, so that the through-flow cross-sectional area of at least part of the first oil supply channel is smaller than the through-flow cross-sectional area of the second oil supply channel.

[0017] In the technical solution, the crankshaft device further comprises a blocking piece, and specifically, the blocking piece is arranged in the first shaft portion and located in the first oil supply channel, so that the flow area of at least part of the first oil supply channel is smaller than the flow area of the second oil supply channel.

[0018] That is, by arranging the blocking piece in the first oil supply channel, the flow area of the first oil supply channel is reduced, and when the lubricating oil in the bottom oil pool enters the first oil supply channel through the second oil supply channel, the flow area of the first oil supply channel is reduced, so that the lubricating oil entering the upper chamber is effectively reduced while ensuring oil supply to the pump body assembly, thereby reducing the oil discharge amount of the compressor, improving the stability and reliability of the compressor during high-flow operation, and improving the oil level stability.

[0019] Alternatively, the blocking piece completely blocks the first oil supply channel, that is, the flow area of at least part of the first oil supply channel is 0. Alternatively, the blocking piece keeps the first oil supply channel open while reducing the flow area. The specific arrangement can be made according to actual needs.

[0020] In some technical solutions, the blocking piece comprises a first blocking portion and a communication hole, wherein the first blocking portion is arranged in the first oil supply channel and connected with the inner wall of the first shaft portion, and the communication hole is arranged on the first blocking portion and arranged through in the axial direction of the crankshaft device.

[0021] In the technical solution, one of the arrangement modes of the blocking piece is defined. Specifically, the blocking piece comprises a first blocking portion and a communication hole, and specifically, the first blocking portion is arranged in the first oil supply channel and connected with the inner wall of the first shaft portion. The communication hole is arranged on the first blocking portion and arranged through in the axial direction, that is, the communication hole communicates with the first oil supply channel.

[0022] That is, the first blocking portion is arranged in the first oil supply channel to reduce the flow area of the first oil supply channel, and when the lubricating oil in the bottom oil pool enters the first oil supply channel through the second oil supply channel, the flow area of the first oil supply channel is reduced, so that the lubricating oil entering the upper chamber is effectively reduced while ensuring oil supply to the pump body assembly, thereby reducing the oil discharge amount of the compressor, improving the stability and reliability of the compressor during high-flow operation, and improving the oil level stability.

[0023] At the same time, by arranging the communication hole, the first oil supply channel is kept open, that is, the first oil supply channel is in a semi-open state, so as to prevent the pressure in the first oil supply channel from changing sharply, and at the same time, the driving assembly can be lubricated, further improving the stability and reliability of the compressor during operation.

[0024] Optionally, the first blocking part and the first shaft part are in an integral structure, that is, the first blocking part is a part of the first shaft part, which can be set according to actual needs.

[0025] In some technical solutions, the blocking part comprises a second blocking part, the second blocking part is arranged in the first oil supply channel and communicates with the first oil supply channel; and the second blocking part comprises a spring or a metal mesh.

[0026] In the technical solution, it is defined that the blocking part comprises the second blocking part, specifically, the second blocking part is arranged in the first oil supply channel, and the second blocking part communicates with the first oil supply channel.

[0027] The second blocking part comprises a spring and a metal mesh, that is, a barrier such as a spring or a metal mesh is arranged in the first oil supply channel while keeping the first oil supply channel completely through, so as to reduce the flow area of the first oil supply channel, and when the lubricating oil in the bottom oil pool enters the first oil supply channel through the second oil supply channel, the flow area of the first oil supply channel is reduced, so that the lubricating oil entering the upper chamber can be effectively reduced while ensuring the oil supply to the pump body assembly, thereby reducing the oil discharge of the compressor, improving the stability and reliability of the compressor during high-flow operation, and improving the oil level stability.

[0028] At the same time, since the structure of the first shaft part itself is not changed, the manufacturing difficulty of the crankshaft device can be effectively reduced, the production efficiency of the crankshaft device can be improved, and the production cost of the compressor with the crankshaft device can be reduced.

[0029] In some technical solutions, optionally, the flow area of at least part of the first oil supply channel is equal to 0.

[0030] In the technical solution, the flow area of at least part of the first oil supply channel is equal to 0, that is, when the lubricating oil in the bottom oil pool enters the first oil supply channel through the second oil supply channel, it cannot directly enter the upper chamber through the first oil supply channel, that is, the first oil supply channel is completely blocked, that is, the first oil supply channel is not through. Thus, the lubricating oil can be prevented from directly entering the upper chamber of the compressor, the oil discharge of the compressor can be further reduced, the stability and reliability of the compressor during high-flow operation can be improved, and the oil level stability can be improved.

[0031] In some technical solutions, the compressor further comprises an exhaust chamber, the driving assembly and the pump body assembly are arranged in the exhaust chamber; one end of the first shaft part away from the second shaft part is provided with a through hole, and the through hole communicates with the first oil supply channel and the exhaust chamber.

[0032] In the technical solution, one end of the first shaft part away from the second shaft part is provided with a through hole, and the through hole is in communication with the first oil supply channel and the exhaust cavity, so that in the case that the first oil supply channel is not completely closed, the pressure in the first oil supply channel and the second oil supply channel can be prevented from changing sharply.

[0033] Meanwhile, a small part of the lubricating oil enters the upper cavity through the first oil supply channel and the through hole, and then flows back through the through-flow hole of the driving assembly, which can also play a role in lubricating the driving assembly.

[0034] In some technical solutions, optionally, the exhaust cavity includes a first region and a second region, the second region is located between the pump body assembly and the driving assembly, and the first region is located on the side of the driving assembly away from the pump body assembly, and the first oil supply channel is in communication with the first region through the through hole; the crankshaft device further includes at least one pressure relief hole, and the at least one pressure relief hole is arranged on the first shaft part and in communication with the first oil supply channel and the second region.

[0035] In the technical solution, the crankshaft device further includes at least one pressure relief hole, and specifically, the exhaust cavity includes a first region and a second region, the first region is located on the side of the driving assembly away from the pump body assembly, and the second region is located between the pump body assembly and the driving assembly, that is, in the axial direction of the crankshaft device, the first region, the driving assembly, the second region and the pump body assembly are sequentially arranged from top to bottom, and it can be understood that the bottom of the pump body assembly has an oil pool.

[0036] During the operation of the compressor, the high-temperature and high-pressure gas discharged from the pump body assembly exhaust port passes through the second region, the driving assembly and the first region in sequence, and is finally discharged to the outside of the shell through the gas outlet at the top of the shell. That is, the pressure of the second region is higher than that of the first region. During the discharge of the high-temperature and high-pressure gas, part of the lubricating oil will be carried, and due to the relatively low pressure of the first region, that is, the imbalance of the pressure of the upper and lower cavities, the oil return is not conducive, and it will also cause the oil discharge of the compressor to increase.

[0037] The at least one pressure relief hole is arranged on the first shaft part, and the at least one pressure relief hole is in communication with the first oil supply channel and the second region.

[0038] It can be understood that the at least one pressure relief hole can be arranged on the side of the blocking piece away from the second shaft part, so that a part of the first oil supply channel, the at least one pressure relief hole, the through hole, the first region and the second region form a through channel, thereby effectively balancing the pressure of the first region and the second region, improving the ventilation efficiency, facilitating the rapid oil return of the lubricating oil entering the first region, further reducing the oil discharge of the compressor, and improving the reliability of the compressor during high-flow operation.

[0039] In addition, at least one pressure relief hole can be arranged on one side of the blocking piece close to the second shaft part, and when the compressor is running, after the lubricating oil enters the first oil supply channel through the second oil supply channel, due to the arrangement of the pressure relief hole, part of the lubricating oil flows out of the first oil supply channel through the at least one pressure relief hole, so that the amount of lubricating oil entering the first area through the first oil supply channel can be further reduced, the oil discharge rate of the compressor is further reduced, and the stability of the oil surface is improved.

[0040] In some technical solutions, optionally, the number of pressure relief holes is at least two, and the at least two pressure relief holes are respectively located on two sides of the blocking piece.

[0041] In this technical solution, the number of pressure relief holes is limited to at least two, and specifically, the at least two pressure relief holes are respectively located on two sides of the blocking piece.

[0042] Specifically, at least one pressure relief hole is arranged on one side of the blocking piece away from the second shaft part, so that part of the first oil supply channel, the at least one pressure relief hole, the through hole, the first area and the second area form a through channel, so that the pressure of the first area and the second area can be effectively balanced, the ventilation efficiency is improved, the rapid oil return of the lubricating oil entering the first area is facilitated, the oil discharge amount of the compressor is further reduced, and the reliability of the compressor during high-flow operation is improved.

[0043] At least one pressure relief hole is arranged on one side of the blocking piece close to the second shaft part, and when the compressor is running, after the lubricating oil enters the first oil supply channel through the second oil supply channel, due to the arrangement of the pressure relief hole, part of the lubricating oil flows out of the first oil supply channel through the at least one pressure relief hole, so that the amount of lubricating oil entering the first area through the first oil supply channel can be further reduced, the oil discharge rate of the compressor is further reduced, and the stability of the oil surface is improved.

[0044] In some technical solutions, optionally, the first shaft part and the second shaft part are an integral structure.

[0045] In this technical solution, the first shaft part and the second shaft part are an integral structure, and it can be understood that the integral structure has good mechanical properties, so that the connection strength between the first shaft part and the second shaft part can be improved, and the effective transmission of power can be ensured.

[0046] In addition, the integral structure also facilitates the machining and production of the crankshaft device, so that the manufacturing difficulty of the crankshaft device can be reduced, the production efficiency of the crankshaft device can be improved, and the production cost of the compressor with the crankshaft device can be further reduced.

[0047] According to the second aspect of the present application, a compressor is provided, which comprises the crankshaft device provided in any of the above technical solutions, so as to have all the beneficial technical effects of the crankshaft device, which will not be described here.

[0048] Further, the compressor further comprises a shell, the shell being provided with an exhaust cavity, an oil pool and an outlet, the exhaust cavity being communicated with the oil pool and the outlet, the second oil supply channel being communicated with the oil pool, and the oil pool being used for containing lubricating oil; a driving assembly being arranged in the exhaust cavity and connected with the first shaft part; and a pump body assembly being arranged in the exhaust cavity and connected with the second shaft part, the pump body assembly being provided with an exhaust port capable of being communicated with the exhaust cavity, and the driving assembly being located between the pump body assembly and the outlet.

[0049] The compressor provided by the embodiment of the present application comprises a shell, a driving assembly, a pump body assembly and a crankshaft device, specifically, the first shaft part is connected with the driving assembly, and the second shaft part is connected with the pump body assembly. It can be understood that under the driving of the driving assembly, the crankshaft device can drive a part of the pump body assembly to move to compress gas.

[0050] Optionally, the pump body assembly comprises a cylinder and a piston, the piston is connected with the second shaft part and located in the cylinder, under the driving of the driving assembly, the crankshaft device drives the piston to move in the cylinder to compress gas. The high-temperature and high-pressure gas compressed is discharged into the exhaust cavity through the exhaust port of the pump body assembly, flows through the through-flow hole of the driving assembly into the upper cavity (the first area), and finally is discharged to the outside of the shell through the outlet, thereby completing the process from compression to exhaust of the gas.

[0051] The first shaft part is provided with a first oil supply channel, and the second shaft part is provided with a second oil supply channel, and the second oil supply channel is communicated with the first oil supply channel. It can be understood that in the process of the crankshaft device driving the piston to move, the lubricating oil in the bottom oil pool supplies oil to the pump body assembly through the second oil supply channel and the first oil supply channel, so as to provide lubricating oil for the sliding parts of the pump body assembly and ensure the reliable operation of the compressor.

[0052] In the related art, a through hole is arranged at the end of the crankshaft away from the pump body assembly to prevent the pressure of the pump cavity from changing sharply. In the process of operation of the compressor, the lubricating oil in the bottom oil pool flows through the second oil supply channel and the first oil supply channel in turn, enters the upper cavity through the through hole, and then flows back to the bottom oil pool through the through-flow hole on the driving assembly. When the compressor is operated at high flow rate, the lubricating oil enters the upper cavity through the through hole quickly, which causes the oil discharge of the compressor to increase.

[0053] The through-flow sectional area of at least part of the first oil supply channel is smaller than the through-flow sectional area of the second oil supply channel, that is, when the lubricating oil in the bottom oil pool enters the first oil supply channel through the second oil supply channel, the through-flow sectional area of the first oil supply channel is reduced, so that the lubricating oil entering the upper cavity can be effectively reduced while ensuring the supply of oil to the pump body assembly, thereby reducing the oil discharge of the compressor, improving the stability and reliability of the compressor when operated at high flow rate, and improving the oil surface stability.

[0054] Optionally, the driving assembly comprises a motor.

[0055] Optionally, the motor comprises a rotor and a stator, and the rotor is connected to the first shaft part.

[0056] Optionally, the compressor further comprises a first balance block and a second balance block.

[0057] In addition, the compressor provided by the technical scheme of the present application has the following additional technical features:

[0058] In some technical schemes, the driving assembly is provided with a through-flow hole, which is arranged through in the axial direction of the crankshaft device and is in communication with the exhaust cavity.

[0059] In this technical scheme, the driving assembly is provided with a through-flow hole, which is arranged through in the axial direction of the crankshaft device and is in communication with the exhaust cavity.

[0060] It can be understood that the high-temperature and high-pressure gas compressed is discharged to the exhaust cavity through the exhaust port of the pump body assembly, flows through the through-flow hole of the driving assembly into the upper cavity (the first area), and is finally discharged to the outside of the shell through the gas outlet, thereby completing the process of gas compression and exhaust.

[0061] The high-temperature and high-pressure gas carries part of the lubricating oil during the discharging process, and the through-flow hole is beneficial to oil return and maintaining the stability of the oil level.

[0062] According to a third aspect of the present application, a refrigeration device is provided, which comprises the crankshaft device or the compressor provided by any of the above technical schemes, and thus has all the beneficial technical effects of the crankshaft device or the compressor, which will not be described herein again.

[0063] Additional aspects and advantages of the present application will be described in the following description part, some of which will become apparent from the following description, or will be understood through practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0064] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the following drawings, in which:

[0065] Figure 1 Fig. 1 shows a structural schematic diagram of a crankshaft device according to one embodiment of the present application;

[0066] Figure 2 Fig. 2 shows a structural schematic diagram of a crankshaft device according to another embodiment of the present application;

[0067] Figure 3 Fig. 3 shows a structural schematic diagram of a crankshaft device according to another embodiment of the present application;

[0068] Figure 4A structural schematic diagram of a compressor is shown according to one embodiment of the present application.

[0069] wherein, Figures 1 to 4 The correspondence between the reference signs and the component names is as follows:

[0070] 100 crankshaft device, 110 first shaft part, 111 first oil supply passage, 120 second shaft part, 121 second oil supply passage, 130 blocking piece, 131 first blocking part, 132 communication hole, 133 second blocking part, 140 through hole, 150 pressure relief hole, 300 compressor, 310 housing, 311 exhaust cavity, 312 first region, 313 second region, 314 oil pool, 315 gas outlet, 320 drive assembly, 321 through-flow hole, 330 pump body assembly. DETAILED DESCRIPTION

[0071] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0072] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, and therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0073] Some embodiments of the present application will be described below with reference to Figures 1 to 4 to describe the crankshaft device 100, the compressor 300 and the refrigeration equipment provided according to some embodiments of the present application.

[0074] In one embodiment according to the present application, as Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, a crankshaft device 100 is proposed, the crankshaft device 100 is used in a compressor 300, the compressor 300 includes a drive assembly 320 and a pump body assembly 330, and the crankshaft device 100 includes: a first shaft part 110, configured to be connected to the drive assembly 320, the first shaft part 110 is provided with a first oil supply passage 111; a second shaft part 120, connected to the first shaft part 110 and configured to be connected to the pump body assembly 330, the second shaft part 120 is provided with a second oil supply passage 121, and the second oil supply passage 121 is in communication with the first oil supply passage 111; wherein at least part of the first oil supply passage 111 has a through-flow sectional area smaller than that of the second oil supply passage 121.

[0075] The crankshaft device 100 provided by the embodiment of the present application comprises a first shaft part 110 and a second shaft part 120, specifically, the first shaft part 110 is connected with the second shaft part 120, and the first shaft part 110 is used for connecting a driving assembly 320, and the second shaft part 120 is used for connecting a pump body assembly 330. It can be understood that under the driving of the driving assembly 320, the crankshaft device 100 can drive a part of the pump body assembly 330 to move, so as to compress gas.

[0076] Optionally, the pump body assembly 330 comprises a cylinder and a piston, the piston is connected with the second shaft part 120, and the piston is located in the cylinder. Under the driving of the driving assembly 320, the crankshaft device 100 drives the piston to move in the cylinder, so as to compress gas. The high-temperature and high-pressure gas compressed is discharged to an exhaust cavity 311 through an exhaust port of the pump body assembly 330, flows through a through-flow hole 321 of the driving assembly 320 into an upper cavity (a first area 312), and finally is discharged to the outside of the shell 310 through a gas outlet 315, so as to complete the process from compression of the gas to exhaust of the gas.

[0077] The first shaft part 110 is provided with a first oil supply channel 111, the second shaft part 120 is provided with a second oil supply channel 121, and the second oil supply channel 121 is in communication with the first oil supply channel 111. It can be understood that in the process that the crankshaft device 100 drives the piston to move, lubricating oil in a bottom oil pool 314 of the compressor 300 is supplied to the pump body assembly 330 through the second oil supply channel 121 and the first oil supply channel 111, so as to provide lubricating oil for sliding parts of the pump body assembly 330, and ensure reliable operation of the compressor 300.

[0078] In the related art, a through hole is arranged at an end of the crankshaft away from the pump body assembly 330, so as to prevent the pressure of the pump cavity from changing sharply. In the process that the compressor 300 operates, the lubricating oil in the bottom oil pool 314 flows through the second oil supply channel 121 and the first oil supply channel 111 in turn, and enters the upper cavity through the through hole, and then flows back to the bottom oil pool 314 through the through-flow hole 321 on the driving assembly 320. When the compressor 300 operates at high flow rate, the lubricating oil enters the upper cavity through the through hole quickly, which causes the oil discharge amount of the compressor 300 to increase.

[0079] The through-flow sectional area of at least part of the first oil supply channel 111 is smaller than the through-flow sectional area of the second oil supply channel 121, that is to say, when the lubricating oil in the bottom oil pool 314 enters the first oil supply channel 111 through the second oil supply channel 121, the through-flow sectional area of the first oil supply channel 111 is reduced, so that the lubricating oil entering the upper cavity can be effectively reduced while ensuring that the pump body assembly 330 is supplied with oil, and then the oil discharge amount of the compressor 300 is reduced, the stability and reliability of the compressor 300 when operating at high flow rate are improved, and the oil level stability is improved.

[0080] Optionally, at least a portion of the flow cross-sectional area of ​​the first oil supply channel 111 is equal to 0. This means that when lubricating oil from the bottom oil sump 314 enters the first oil supply channel 111 via the second oil supply channel 121, it cannot directly enter the upper chamber through the first oil supply channel 111. In other words, the first oil supply channel 111 is completely blocked, meaning it is not continuous. This prevents lubricating oil from directly entering the upper chamber of the compressor 300, further reducing the oil discharge of the compressor 300, improving the stability and reliability of the compressor 300 during high-flow operation, and improving oil level stability.

[0081] Optionally, the second shaft portion 120 includes an eccentric shaft and a secondary shaft.

[0082] The first shaft portion 110 and the second shaft portion 120 are an integral structure. It is understood that the integral structure has good mechanical properties, thus improving the connection strength between the first shaft portion 110 and the second shaft portion 120 and ensuring the effective transmission of power.

[0083] In addition, the integrated structure facilitates the processing and production of the crankshaft assembly 100, thereby reducing the manufacturing difficulty of the crankshaft assembly 100, improving the production efficiency of the crankshaft assembly 100, and thus reducing the production cost of the compressor 300 having the crankshaft assembly 100.

[0084] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, the crankshaft assembly 100 may optionally include a blocking member 130, which is disposed in the first shaft portion 110 and located in the first oil supply channel 111, so that at least a portion of the flow cross-sectional area of ​​the first oil supply channel 111 is smaller than the flow cross-sectional area of ​​the second oil supply channel 121.

[0085] In this embodiment, the crankshaft assembly 100 is further defined as including a blocking member 130. Specifically, the blocking member 130 is disposed in the first shaft portion 110 and is located within the first oil supply channel 111, so that at least a portion of the flow cross-sectional area of ​​the first oil supply channel 111 is smaller than the flow cross-sectional area of ​​the second oil supply channel 121.

[0086] In other words, by setting a blocking element 130 in the first oil supply channel 111, the flow cross-sectional area of ​​the first oil supply channel 111 can be reduced. When the lubricating oil from the bottom oil sump 314 enters the first oil supply channel 111 through the second oil supply channel 121, the flow cross-sectional area of ​​the first oil supply channel 111 is reduced. This can effectively reduce the amount of lubricating oil entering the upper chamber while ensuring oil supply to the pump body assembly 330, thereby reducing the amount of oil discharged by the compressor 300, improving the stability and reliability of the compressor 300 during high flow operation, and improving the stability of the oil level.

[0087] Optionally, the blocking piece 130 completely blocks the first oil supply passage 111, that is, the flow area of at least part of the first oil supply passage 111 is 0. Alternatively, the blocking piece 130 keeps the first oil supply passage 111 open while reducing the flow area. The specific setting can be made according to actual needs.

[0088] As shown in FIG. 1, in some embodiments, the blocking piece 130 includes a first blocking portion 131 and a communication hole 132. The first blocking portion 131 is arranged in the first oil supply passage 111 and connected to the inner wall of the first shaft portion 110. The communication hole 132 is arranged on the first blocking portion 131 and extends in the axial direction of the crankshaft device 100. Figure 2 In this embodiment, one of the setting modes of the blocking piece 130 is defined. Specifically, the blocking piece 130 includes a first blocking portion 131 and a communication hole 132. Specifically, the first blocking portion 131 is arranged in the first oil supply passage 111, and the first blocking portion 131 is connected to the inner wall of the first shaft portion 110. The communication hole 132 is arranged on the first blocking portion 131 and extends in the axial direction, that is, the communication hole 132 communicates with the first oil supply passage 111.

[0089] That is, the first blocking portion 131 is arranged in the first oil supply passage 111 to reduce the flow area of the first oil supply passage 111. When the lubricating oil in the bottom oil pool 314 enters the first oil supply passage 111 through the second oil supply passage 121, the flow area of the first oil supply passage 111 is reduced, so that the lubricating oil entering the upper chamber can be effectively reduced while ensuring the oil supply to the pump body assembly 330, thereby reducing the oil discharge of the compressor 300, improving the stability and reliability of the compressor 300 during high-flow operation, and improving the oil level stability.

[0090] At the same time, by arranging the communication hole 132, the first oil supply passage 111 is kept open, that is, the first oil supply passage 111 is in a semi-open state, thereby preventing the pressure in the first oil supply passage 111 from changing sharply while lubricating the driving assembly 320, further improving the stability and reliability of the compressor 300 during operation.

[0091] Optionally, the first blocking portion 131 and the first shaft portion 110 are an integral structure, that is, the first blocking portion 131 is part of the first shaft portion 110, and the specific setting can be made according to actual needs.

[0092] As shown in FIG. 1, in some embodiments, the blocking piece 130 includes a first blocking portion 131 and a communication hole 132. The first blocking portion 131 is arranged in the first oil supply passage 111 and connected to the inner wall of the first shaft portion 110. The communication hole 132 is arranged on the first blocking portion 131 and extends in the axial direction of the crankshaft device 100.

[0093] Figure 3 ​As shown, in some embodiments, optionally, the blocking member 130 includes a second blocking part 133, which is disposed in the first oil supply channel 111 and communicates with the first oil supply channel 111; wherein, the second blocking part 133 includes a spring or a metal mesh.

[0094] In this embodiment, the blocking member 130 is defined to include a second blocking part 133. Specifically, the second blocking part 133 is disposed in the first oil supply channel 111 and is connected to the first oil supply channel 111.

[0095] The second blocking part 133 includes a spring and a metal mesh. That is, while keeping the first oil supply channel 111 fully open, a spring or metal mesh or other obstruction is provided in the first oil supply channel 111 to reduce the flow cross-sectional area of ​​the first oil supply channel 111. When the lubricating oil from the bottom oil sump 314 enters the first oil supply channel 111 through the second oil supply channel 121, the flow cross-sectional area of ​​the first oil supply channel 111 is reduced. This effectively reduces the amount of lubricating oil entering the upper chamber while ensuring oil supply to the pump body assembly 330, thereby reducing the amount of oil discharged by the compressor 300, improving the stability and reliability of the compressor 300 during high flow operation, and improving oil level stability.

[0096] At the same time, since the structure of the first shaft portion 110 itself is not changed, the manufacturing difficulty of the crankshaft assembly 100 can be effectively reduced, the production efficiency of the crankshaft assembly 100 can be improved, and the production cost of the compressor 300 having the crankshaft assembly 100 can be reduced.

[0097] like Figure 1 As shown, in some embodiments, optionally, at least a portion of the first oil supply channel 111 has a flow cross-sectional area equal to 0.

[0098] In this embodiment, at least a portion of the flow cross-sectional area of ​​the first oil supply channel 111 is equal to 0. This means that when lubricating oil from the bottom oil sump 314 enters the first oil supply channel 111 via the second oil supply channel 121, it cannot directly enter the upper chamber through the first oil supply channel 111. In other words, the first oil supply channel 111 is completely blocked, meaning it is not fully open. This prevents lubricating oil from directly entering the upper chamber of the compressor 300, further reducing the oil discharge of the compressor 300, improving the stability and reliability of the compressor 300 during high-flow operation, and improving oil level stability.

[0099] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown in some embodiments, the compressor 300 optionally further comprises an exhaust cavity 311, the driving assembly 320 and the pump body assembly 330 are arranged in the exhaust cavity 311; the first shaft portion 110 is provided with a through hole 140 at an end thereof away from the second shaft portion 120, and the through hole 140 is in communication with the first oil supply channel 111 and the exhaust cavity 311.

[0100] In this embodiment, it is defined that the first shaft portion 110 is provided with the through hole 140 at an end thereof away from the second shaft portion 120, and the through hole 140 is in communication with the first oil supply channel 111 and the exhaust cavity 311, so that the pressure in the first oil supply channel 111 and the second oil supply channel 121 can be prevented from changing sharply in the case that the first oil supply channel 111 is not completely closed.

[0101] Meanwhile, a small amount of lubricating oil enters the upper cavity through the first oil supply channel 111 and the through hole 140, and then flows back through the through flow hole 321 of the driving assembly 320, which can also play a role in lubricating the driving assembly 320.

[0102] As shown in some embodiments, Figure 1 , Figure 2 , Figure 3 and Figure 4 , the exhaust cavity 311 optionally comprises a first region 312 and a second region 313, the second region 313 is located between the pump body assembly 330 and the driving assembly 320, the first region 312 is located at a side of the driving assembly 320 away from the pump body assembly 330, and the first oil supply channel 111 is in communication with the first region 312 through the through hole 140; the crankshaft device 100 further comprises at least one pressure relief hole 150, the at least one pressure relief hole 150 is arranged in the first shaft portion 110 and is in communication with the first oil supply channel 111 and the second region 313.

[0103] In this embodiment, it is defined that the crankshaft device 100 further comprises at least one pressure relief hole 150, specifically, the exhaust cavity 311 comprises a first region 312 and a second region 313, the first region 312 is located at a side of the driving assembly 320 away from the pump body assembly 330, and the second region 313 is located between the pump body assembly 330 and the driving assembly 320, that is, in the axial direction of the crankshaft device 100, the first region 312, the driving assembly 320, the second region 313 and the pump body assembly 330 are arranged in sequence from top to bottom, and it can be understood that the bottom of the pump body assembly 330 has an oil pool 314.

[0104] During the operation of the compressor 300, the high-temperature and high-pressure gas discharged from the gas outlet of the pump body assembly 330 passes through the second area 313, the driving assembly 320, and the first area 312 in sequence, and is finally discharged to the outside of the shell 310 through the gas outlet 315 at the top of the shell 310. That is, the pressure of the second area 313 is higher than that of the first area 312. During the discharge of the high-temperature and high-pressure gas, part of the lubricating oil is carried away. Since the pressure of the first area 312 is relatively low, that is, the pressure of the upper and lower cavities is unbalanced, it is not conducive to oil return, and it also causes the oil discharge amount of the compressor 300 to increase.

[0105] The at least one pressure relief hole 150 is arranged on the first shaft portion 110, and the at least one pressure relief hole 150 is in communication with the first oil supply channel 111 and the second area 313.

[0106] It can be understood that the at least one pressure relief hole 150 can be arranged on the side of the blocking piece 130 away from the second shaft portion 120, so that the part of the first oil supply channel 111, the at least one pressure relief hole 150, the through hole 140, the first area 312, and the second area 313 form a through channel, thereby effectively balancing the pressure of the first area 312 and the second area 313, improving the ventilation efficiency, facilitating the rapid oil return of the lubricating oil entering the first area 312, further reducing the oil discharge amount of the compressor 300, and improving the reliability of the compressor 300 during high-flow operation.

[0107] In addition, the at least one pressure relief hole 150 can be arranged on the side of the blocking piece 130 close to the second shaft portion 120. When the compressor 300 is operating, after the lubricating oil enters the first oil supply channel 111 through the second oil supply channel 121, due to the arrangement of the pressure relief hole 150, part of the lubricating oil flows out of the first oil supply channel 111 through the at least one pressure relief hole 150, thereby further reducing the amount of lubricating oil entering the first area 312 through the first oil supply channel 111, further reducing the oil discharge rate of the compressor 300, and improving the stability of the oil surface.

[0108] Optionally, the pump body assembly 330 and the driving assembly 320 are at a certain distance to form the second area 313, and the first shaft portion 110 is arranged with the pressure relief hole 150 in communication with the second area 313.

[0109] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , in some embodiments, the number of pressure relief holes 150 is at least two, and the at least two pressure relief holes 150 are respectively located on the two sides of the blocking piece 130.

[0110] In this embodiment, the number of pressure relief holes 150 is defined as at least two, and specifically, at least two pressure relief holes 150 are respectively located on both sides of the blocking piece 130.

[0111] Specifically, the at least one pressure relief hole 150 is arranged on the side of the blocking piece 130 away from the second shaft part 120, so that a part of the first oil supply channel 111, the at least one pressure relief hole 150, the through hole 140, the first region 312 and the second region 313 form a through channel, so that the pressure of the first region 312 and the second region 313 can be effectively balanced, the ventilation efficiency is improved, the rapid oil return of the lubricating oil entering the first region 312 is facilitated, the oil discharge rate of the compressor 300 is further reduced, and the reliability of the compressor 300 in the high flow operation process is improved.

[0112] The at least one pressure relief hole 150 is arranged on the side of the blocking piece 130 close to the second shaft part 120, when the compressor 300 is running, after the lubricating oil enters the first oil supply channel 111 through the second oil supply channel 121, due to the arrangement of the pressure relief hole 150, part of the lubricating oil flows out of the first oil supply channel 111 through the at least one pressure relief hole 150, so that the amount of lubricating oil entering the first region 312 through the first oil supply channel 111 can be further reduced, the oil discharge rate of the compressor 300 is further reduced, and the stability of the oil surface is improved.

[0113] In some embodiments, optionally, the first shaft part 110 and the second shaft part 120 are an integral structure.

[0114] In this embodiment, the first shaft part 110 and the second shaft part 120 are defined as an integral structure, and it can be understood that the integral structure has good mechanical properties, so that the connection strength between the first shaft part 110 and the second shaft part 120 can be improved, and the effective transmission of power can be ensured.

[0115] In addition, the integral structure also facilitates the machining and production of the crankshaft device 100, so that the manufacturing difficulty of the crankshaft device 100 can be reduced, the production efficiency of the crankshaft device 100 can be improved, and the production cost of the compressor 300 with the crankshaft device 100 can be further reduced.

[0116] According to a second aspect of the present application, a compressor 300 is provided, comprising the crankshaft device 100 provided in any of the above embodiments, so as to have all the beneficial technical effects of the crankshaft device 100, which will not be repeated here.

[0117] As Figure 4As shown, further, the compressor 300 further comprises a housing 310, the housing 310 is provided with an exhaust cavity 311, an oil pool 314 and an outlet 315, the exhaust cavity 311 is communicated with the oil pool 314 and the outlet 315, the second oil supply channel 121 is communicated with the oil pool 314, and the oil pool 314 is used for accommodating lubricating oil; a driving assembly 320 is arranged in the exhaust cavity 311 and connected with the first shaft part 110; a pump body assembly 330 is arranged in the exhaust cavity 311 and connected with the second shaft part 120, and the pump body assembly 330 is provided with an exhaust port capable of being communicated with the exhaust cavity 311, and the driving assembly 320 is located between the pump body assembly 330 and the outlet 315.

[0118] The compressor 300 provided by the embodiment of the present application comprises the housing 310, the driving assembly 320, the pump body assembly 330 and the crankshaft device 100, and specifically, the first shaft part 110 is connected with the driving assembly 320, and the second shaft part 120 is connected with the pump body assembly 330. It can be understood that under the driving of the driving assembly 320, the crankshaft device 100 can drive a part of the pump body assembly 330 to move to compress gas.

[0119] Optionally, the pump body assembly 330 comprises a cylinder and a piston, the piston is connected with the second shaft part 120 and located in the cylinder, and under the driving of the driving assembly 320, the crankshaft device 100 drives the piston to move in the cylinder to compress gas. The high-temperature and high-pressure gas compressed is discharged to the exhaust cavity 311 through the exhaust port of the pump body assembly 330, flows through the through-flow hole 321 of the driving assembly 320 into the upper cavity (the first region 312), and finally is discharged to the outside of the housing 310 through the outlet 315, thereby completing the process from compression to exhaust of the gas.

[0120] The first shaft part 110 is provided with a first oil supply channel 111, the second shaft part 120 is provided with a second oil supply channel 121, and the second oil supply channel 121 is communicated with the first oil supply channel 111. It can be understood that in the process of driving the piston to move by the crankshaft device 100, the lubricating oil in the bottom oil pool 314 of the compressor 300 is supplied to the pump body assembly 330 through the second oil supply channel 121 and the first oil supply channel 111 to provide lubricating oil for the sliding parts of the pump body assembly 330, thereby ensuring the reliable operation of the compressor 300.

[0121] In the related art, a through hole is arranged at the end of the crankshaft away from the pump body assembly 330 to prevent the pressure of the pump cavity from changing sharply. In the process of operation of the compressor 300, the lubricating oil in the bottom oil pool 314 flows through the second oil supply channel 121 and the first oil supply channel 111 in turn, enters the upper cavity through the through hole, and then flows back to the bottom oil pool 314 through the through-flow hole 321 of the driving assembly 320. When the compressor 300 is operated at high flow rate, the lubricating oil enters the upper cavity through the through hole quickly, thereby increasing the oil discharge amount of the compressor 300.

[0122] At least part of the first oil supply passage 111 has a smaller cross-sectional area than the second oil supply passage 121, that is, when the lubricating oil in the bottom oil pool 314 enters the first oil supply passage 111 through the second oil supply passage 121, the cross-sectional area of the first oil supply passage 111 is reduced, so that the lubricating oil entering the upper chamber can be effectively reduced while ensuring oil supply to the pump body assembly 330, thereby reducing the oil discharge of the compressor 300, improving the stability and reliability of the compressor 300 during high-flow operation, and improving the oil level stability.

[0123] Optionally, the drive assembly 320 includes a motor.

[0124] Optionally, the motor includes a rotor and a stator, and the rotor is connected to the first shaft portion 110.

[0125] Optionally, the compressor 300 further includes a first balance weight and a second balance weight.

[0126] As shown in some embodiments, the drive assembly 320 is optionally provided with a through hole 321, which is arranged through in the axial direction of the crankshaft device 100 and communicates with the exhaust chamber 311. Figure 4 In this embodiment, the drive assembly 320 is provided with a through hole 321, specifically, the through hole 321 is arranged through in the axial direction of the crankshaft device 100 and communicates with the exhaust chamber 311.

[0127] It can be understood that the high-temperature and high-pressure gas after compression is discharged to the exhaust chamber 311 through the exhaust port of the pump body assembly 330, flows through the through hole 321 of the drive assembly 320 into the upper chamber (the first area 312), and finally is discharged to the outside of the shell 310 through the gas outlet 315, completing the process of gas compression and exhaust.

[0128] The high-temperature and high-pressure gas will carry part of the lubricating oil during the discharge process, and the through hole 321 is also beneficial to oil return and maintaining the stability of the oil level.

[0129] According to a third aspect of the present application, a refrigeration device is provided, which includes the crankshaft device 100 or the compressor 300 according to any one of the above embodiments, thereby having all the beneficial technical effects of the crankshaft device 100 or the compressor 300, which will not be repeated here.

[0130]

[0131] ​The crankshaft device 100 comprises a first shaft part 110 and a second shaft part 120, specifically, the first shaft part 110 is connected with the second shaft part 120, and the first shaft part 110 is used for connecting the driving assembly 320, and the second shaft part 120 is used for connecting the pump body assembly 330. It can be understood that under the driving of the driving assembly 320, the crankshaft device 100 can drive a part of the pump body assembly 330 to move, so as to compress the gas.

[0132] Optionally, the pump body assembly 330 comprises a cylinder and a piston, the piston is connected with the second shaft part 120, and the piston is located in the cylinder. Under the driving of the driving assembly 320, the crankshaft device 100 drives the piston to move in the cylinder, so as to compress the gas. The high-temperature and high-pressure gas compressed is discharged to the exhaust cavity 311 through the exhaust port of the pump body assembly 330, flows through the through-flow hole 321 of the driving assembly 320 into the upper cavity (the first area 312), and finally is discharged to the outside of the shell 310 through the gas outlet 315, so as to complete the process from compression to exhaust of the gas.

[0133] The first shaft part 110 is provided with a first oil supply channel 111, and the second shaft part 120 is provided with a second oil supply channel 121, and the second oil supply channel 121 is in communication with the first oil supply channel 111. It can be understood that in the process that the crankshaft device 100 drives the piston to move, the lubricating oil in the bottom oil pool 314 of the compressor 300 is supplied to the pump body assembly 330 through the second oil supply channel 121 and the first oil supply channel 111, so as to provide the lubricating oil for the sliding parts of the pump body assembly 330, and ensure the reliable operation of the compressor 300.

[0134] In the related art, a through hole is arranged at the end of the crankshaft away from the pump body assembly 330, so as to prevent the pressure of the pump cavity from changing sharply. In the process that the compressor 300 operates, the lubricating oil in the bottom oil pool 314 flows through the second oil supply channel 121 and the first oil supply channel 111 in turn, and enters the upper cavity through the through hole, and then flows back to the bottom oil pool 314 through the through-flow hole 321 on the driving assembly 320. When the compressor 300 operates at high flow rate, the lubricating oil enters the upper cavity through the through hole quickly, which causes the oil discharge amount of the compressor 300 to increase.

[0135] The through-flow sectional area of at least part of the first oil supply channel 111 is smaller than the through-flow sectional area of the second oil supply channel 121, that is to say, when the lubricating oil in the bottom oil pool 314 enters the first oil supply channel 111 through the second oil supply channel 121, the through-flow sectional area of the first oil supply channel 111 is reduced, so that the lubricating oil entering the upper cavity can be effectively reduced while ensuring that the pump body assembly 330 is supplied with oil, and then the oil discharge amount of the compressor 300 is reduced, the stability and reliability of the compressor 300 when operating at high flow rate are improved, and the oil level stability is improved.

[0136] Optionally, the flow area of the at least partial first oil supply channel 111 is equal to 0, that is, when the lubricating oil in the bottom oil pool 314 enters the first oil supply channel 111 through the second oil supply channel 121, the lubricating oil cannot directly enter the upper cavity through the first oil supply channel 111, that is, the first oil supply channel 111 is completely blocked, that is, the first oil supply channel 111 is not through. Thus, the lubricating oil can be prevented from directly entering the upper cavity of the compressor 300, further reducing the oil discharge amount of the compressor 300, improving the stability and reliability of the compressor 300 when operating at high flow, and improving the oil level stability.

[0137] In the description of the present specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, or detachable connection, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0138] In the description of the present specification, the terms "one embodiment", "some embodiments", "a specific embodiment" and the like mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0139] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A crankshaft assembly, characterized in that, The crankshaft assembly is used in a compressor, the compressor including a drive assembly and a pump body assembly, the bottom of the pump body assembly having an oil sump, and the crankshaft assembly including: A first shaft portion is used to connect the drive assembly, and the first shaft portion is provided with a first oil supply channel; The second shaft is connected to the first shaft and is used to connect the pump body assembly. The second shaft is provided with a second oil supply channel, which is connected to the first oil supply channel. Wherein, at least a portion of the flow cross-sectional area of ​​the first oil supply channel is smaller than the flow cross-sectional area of ​​the second oil supply channel; The crankshaft assembly also includes: A blocking element is provided on the first shaft portion and located within the first oil supply channel, so that at least a portion of the flow cross-sectional area of ​​the first oil supply channel is smaller than the flow cross-sectional area of ​​the second oil supply channel. The crankshaft assembly further includes at least one pressure relief hole, which is disposed on the first shaft portion, and at least one of the pressure relief holes is disposed on the side of the blocking member away from the second shaft portion; The compressor further includes an exhaust chamber, and the drive assembly and the pump body assembly are disposed within the exhaust chamber; The first shaft portion has a through hole at one end opposite to the second shaft portion, and the through hole is connected to the first oil supply channel and the exhaust chamber; The exhaust chamber includes a first region and a second region. The second region is located between the pump body assembly and the drive assembly. The first region is located on the side of the drive assembly away from the pump body assembly. The first oil supply channel communicates with the first region through the through hole. The drive assembly is provided with a flow passage hole, which is provided through the crankshaft device along the axial direction and communicates with the exhaust chamber. At least one of the pressure relief holes, the through hole, the first region, and the second region form a through channel.

2. The crankshaft assembly according to claim 1, characterized in that, The blocking element includes: The first blocking part is disposed in the first oil supply channel and is connected to the inner wall of the first shaft part; A connecting hole is provided in the first blocking part and extends through the crankshaft device in the axial direction.

3. The crankshaft assembly according to claim 1, characterized in that, The blocking element includes: The second blocking part is disposed in the first oil supply channel and is connected to the first oil supply channel; The second blocking part includes a spring or a metal mesh.

4. The crankshaft assembly according to claim 1, characterized in that, At least a portion of the flow cross-sectional area of ​​the first oil supply channel is equal to 0.

5. The crankshaft assembly according to any one of claims 1 to 4, characterized in that, At least one pressure relief hole is connected to the first oil supply channel and the second area.

6. The crankshaft assembly according to claim 5, characterized in that, The number of pressure relief holes is at least two, and the at least two pressure relief holes are located on both sides of the blocking member.

7. The crankshaft assembly according to any one of claims 1 to 4, characterized in that, The first shaft portion and the second shaft portion are an integral structure.

8. A compressor, characterized in that, include: The crankshaft assembly as described in any one of claims 1 to 7; The housing has an exhaust chamber, an oil sump, and an air outlet. The exhaust chamber is connected to the oil sump and the air outlet. The second oil supply channel is connected to the oil sump. The oil sump is used to hold lubricating oil. A drive assembly is disposed within the exhaust chamber and connected to the first shaft portion; A pump body assembly is disposed in the exhaust chamber and connected to the second shaft portion. The pump body assembly is provided with an exhaust port that can communicate with the exhaust chamber. The drive assembly is located between the pump body assembly and the exhaust port.

9. The compressor according to claim 8, characterized in that, The drive assembly is provided with a flow passage hole, which is provided through the crankshaft device along the axial direction and is connected to the exhaust chamber.

10. A refrigeration device, characterized in that, include: The crankshaft assembly as described in any one of claims 1 to 7; or The compressor as described in claim 8 or 9.

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