Crankshaft oil pumping assembly, compressor and refrigerator

Abstract

The utility model provides a crankshaft oil pumping assembly, a compressor and a refrigerator. The crankshaft oil pumping assembly comprises a crankshaft body and an oil blocking assembly. The crankshaft body is provided with a mounting cavity, an oil inlet and an oil outlet are formed in the crankshaft body, and the oil inlet and the oil outlet are both communicated with the mounting cavity; the oil blocking assembly comprises an oil blocking piece and an elastic piece, one end of the elastic piece is connected with the inner wall of the installation cavity, the other end of the elastic piece is connected with the oil blocking piece, and the oil blocking piece is movably arranged in the installation cavity in the axial direction of the crankshaft body so that the oil blocking piece can be away from the oil outlet or shield part of the oil outlet. The oil baffle piece can dynamically adjust the oil outlet amount of the oil outlet according to the rotating speed change of the crankshaft body, the oil pumping assembly can adapt to the oil pumping requirements of the compressor under different working frequencies through the arrangement of the oil baffle piece, it is guaranteed that enough oil is supplied at the low frequency, and too much oil is avoided at the high frequency.

Description

TECHNICAL FIELD

[0001] The utility model belongs to refrigerator technical field, concretely relates to a crankshaft pump oil subassembly, compressor and refrigerator. BACKGROUND

[0002] With the popularization of variable frequency refrigerator, the use of variable frequency refrigerator compressor is more and more extensive, and the variable frequency refrigerator compressor has higher and higher requirements on its own pumping capacity.At present, the pumping structure of variable frequency piston compressor mainly includes spiral oil pump and centrifugal pump pumping.

[0003] The spiral oil pump pumping mainly utilizes the small hole of oil pump to hang on a steel wire fixed on the motor, and the oil hole in the crankshaft main shaft is inserted into the oil hole, and the centrifugal oil pump mainly directly inserts the oil suction pipe into the lower end of the crankshaft, and the two pumping forms utilize the centrifugal force generated by the rotation of the crankshaft to transport the oil in the oil pool to the whole pump body through the oil path inside and outside the crankshaft.But due to the assembly form of the spiral oil pump, the inner wall of the oil hole on the crankshaft is inevitably rubbed, the power consumption and noise are increased, the service life of the compressor is reduced, and high-frequency operation can also cause excessive pumping, and the moving parts in the cylinder hole cannot be lubricated or cooled.And the centrifugal oil pump itself has very limited pumping capacity, and there are problems of too small low-frequency pumping amount and too large high-frequency pumping amount of the variable frequency compressor, which cannot meet the pumping demand of the low-frequency operation of the variable frequency compressor, and can also cause the wear of pump body parts. SUMMARY

[0004] The utility model provides a kind of crankshaft pump oil subassembly, compressor and refrigerator, and the technical problems that the existing pumping mode exists when crankshaft rotates, too small low-frequency pumping amount and too large high-frequency pumping amount can be solved.

[0005] The utility model provides a kind of crankshaft pump oil subassembly, comprising crankshaft body and oil blocking component;

[0006] The crankshaft body has installation chamber, oil inlet and oil outlet are arranged on the crankshaft body, and the oil inlet and the oil outlet are communicated with the installation chamber;

[0007] The oil blocking component includes oil blocking piece and elastic piece, one end of the elastic piece is connected with the inner wall of the installation chamber, the other end of the elastic piece is connected with the oil blocking piece, and the oil blocking piece is movably arranged in the installation chamber along the axial direction of the crankshaft body, so that the oil blocking piece is away from the oil outlet or shields part of the oil outlet.

[0008] In some embodiments, the oil blocking piece includes an oil blocking section and a connecting section, a first end of the oil blocking section is connected with the elastic piece, a second end of the oil blocking section is connected with the connecting section, the first end of the oil blocking piece is away from the oil outlet or shields part of the oil outlet, and the second end of the oil blocking section is provided with an oil passing channel.

[0009] In some embodiments, the second end outer wall of the oil blocking section is provided with a first groove and a second groove, and the first groove and the second groove are communicated to form the oil passing channel.

[0010] In some embodiments, the first end outer wall of the oil blocking section is provided with a ring groove, and an end of the elastic member away from the inner wall of the mounting cavity is mounted in the ring groove.

[0011] In some embodiments, an oil inlet flow channel is formed between the oil blocking member and the inner wall of the mounting cavity, the bottom end of the crankshaft body is provided with the oil inlet port, the oil inlet flow channel is communicated with the oil inlet port, and an oil guide flow channel is formed in the inner wall of the mounting cavity or the outer wall of the oil blocking member, and the oil guide flow channel is communicated with the oil inlet flow channel.

[0012] In some embodiments, the oil guide flow channel is formed in the inner wall of the mounting cavity, the oil guide flow channel is in a spiral shape, one end of the oil guide flow channel is communicated with the oil inlet flow channel, and the other end of the oil guide flow channel extends to the oil outlet port.

[0013] In some embodiments, an oil suction sleeve is further included, the oil suction sleeve is connected with the bottom end of the crankshaft body, and the oil suction sleeve is provided with an oil suction port communicated with the oil inlet port.

[0014] In some embodiments, the oil suction sleeve is provided with an oil guide sheet, the oil suction port is arranged at the bottom of the oil suction sleeve, along a central axis of the oil suction port, the oil guide sheet divides an inner cavity of the oil suction sleeve into a first cavity and a second cavity, a part of the oil suction port is communicated with the first cavity, another part of the oil suction port is communicated with the second cavity, and the first cavity and the second cavity are both communicated with the oil inlet port.

[0015] In some embodiments, an end of the oil blocking member away from the elastic member is provided with a sliding groove, and an end of the oil guide sheet away from the oil suction port extends into the sliding groove.

[0016] A compressor comprising a crankshaft oil pumping assembly, wherein the crankshaft oil pumping assembly is the crankshaft oil pumping assembly described above.

[0017] A refrigerator comprising a compressor, wherein the compressor is the compressor described above.

[0018] The crankshaft oil pumping assembly, the compressor and the refrigerator provided by the utility model have the following beneficial effects:

[0019] The oil blocking piece can dynamically adjust the oil outlet amount according to the rotating speed change of the crankshaft body, when the crankshaft rotates at high speed, the oil blocking piece is subjected to a large centrifugal force, and part of the oil outlet is shielded, so that the oil outlet amount is reduced; when rotating at low speed, the oil blocking piece is away from the oil outlet, and more oil is allowed to flow out; the setting of the oil blocking piece enables the oil pumping assembly to adaptively meet the oil pumping demand of the compressor under different working frequencies, so that sufficient oil amount is supplied at low frequency, and excessive oil amount is avoided at high frequency. The cooperation of the oil blocking piece and the elastic piece helps to more accurately control the flow direction and flow of the lubricating oil; the elastic piece connects the oil blocking piece and the inner wall of the mounting chamber, and the elastic characteristic of the elastic piece allows the oil blocking piece to have different positions and states under different rotating speeds; at low speed, the oil blocking piece is mainly subjected to the action of gravity, and at high speed, the centrifugal force becomes the main force. This setting enables the oil blocking piece to automatically adjust the position according to the force acting on the oil blocking piece, so as to adapt to different working conditions, improve the oil pumping efficiency, and ensure that the key components of the compressor are properly lubricated, thereby improving the overall lubrication efficiency and compressor performance. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only exemplary, and those skilled in the art can also obtain other implementation drawings according to the provided drawings without creating labor.

[0021] Figure 1 It is an explosion view of the crankshaft oil pumping assembly of the embodiment of the present application.

[0022] Figure 2 It is a schematic view when the oil blocking assembly of the embodiment of the present application is away from the oil outlet.

[0023] Figure 3 It is a schematic view when the oil blocking assembly of the embodiment of the present application shields part of the oil outlet.

[0024] Figure 4 It is a schematic view of the oil blocking assembly of the embodiment of the present application.

[0025] Figure 5 It is a schematic view of the crankshaft body of the embodiment of the present application.

[0026] Figure 6 It is a schematic view of the oil passing channel of the embodiment of the present application.

[0027] Figure 7 It is a schematic view of the first groove body and the second groove body of the embodiment of the present application.

[0028] Fig. 1 - crankshaft body; 101 - mounting chamber; 102 - oil inlet; 103 - oil outlet; 2 - oil blocking assembly; 3 - oil blocking piece; 301 - oil blocking section; 311 - first groove; 312 - second groove; 302 - connecting section; 303 - oil passing channel; 304 - ring groove; 305 - sliding groove; 4 - elastic piece; 501 - oil inlet flow channel; 502 - oil guiding flow channel; 6 - oil suction cover; 601 - oil suction port; 602 - first chamber; 603 - second chamber; 7 - oil guiding sheet. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0030] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0031] For the convenience of description, spatial relative terms such as "on", "above", "upper surface", "upper" and the like can be used to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawings is inverted, the device described as "above" or "on" other devices or structures will be positioned "below" or "under" other devices or structures.

[0032] Reference should be made in conjunction with Figures 1 to 3As shown, according to the embodiment of the utility model, provide a kind of crankshaft oil pumping assembly, it includes crankshaft body 1 and oil baffle component 2;Crankshaft body 1 has installation chamber 101, oil inlet 102 and oil outlet 103 are provided on crankshaft body 1, and oil inlet 102 and oil outlet 103 are all communicated with installation chamber 101;Oil baffle component 2 includes oil baffle 3 and elastic member 4, one end of elastic member 4 is connected with the inner wall of installation chamber 101, the other end of elastic member 4 is connected with oil baffle 3, along the axial direction of crankshaft body 1, oil baffle 3 is movably arranged in installation chamber 101, to make oil baffle 3 away from oil outlet 103 or shelter part oil outlet 103.

[0033] Specifically, crankshaft body 1 itself can rotate, and crankshaft body 1 has both high-speed rotating state and low-speed rotating state. When crankshaft body 1 rotates at low speed, the centrifugal force acting on oil baffle component 2 is small, and oil baffle 3 is away from oil outlet 103. Under the action of gravity, the elongation of elastic member 4 is greater. At this time, oil outlet 103 is not blocked, and the lubricating oil flowing into installation chamber 101 from oil inlet 102 can flow out smoothly from oil outlet 103. When crankshaft body 1 rotates at high speed, the centrifugal force acting on oil baffle 3 is large, and the kinetic energy of the lubricating oil increases under the influence of the centrifugal force of crankshaft body 1. The lubricating oil moves upward in installation chamber 101, carrying oil baffle 3 with it, and extruding elastic member 4 to deform. The elongation of elastic member 4 decreases, and oil baffle 3 partially coincides with oil outlet 103, i.e., oil baffle 3 can block part of oil outlet 103. The lubricating oil in installation chamber 101 can still flow out from oil outlet 103, but the flow rate decreases.

[0034] In this embodiment, oil baffle 3 can dynamically adjust the oil flow rate of oil outlet 103 according to the change in the rotational speed of crankshaft body 1. When crankshaft body 1 rotates at high speed, oil baffle 3 is subjected to a large centrifugal force, and partially blocks oil outlet 103 to reduce the oil flow rate. When crankshaft body 1 rotates at low speed, oil baffle 3 is away from oil outlet 103, allowing more oil to flow out. The arrangement of oil baffle 3 enables the oil pumping assembly to adapt to the oil pumping demand of the compressor at different working frequencies, ensuring sufficient oil supply at low frequency and avoiding excessive oil at high frequency. The cooperation of oil baffle 3 and elastic member 4 helps to more accurately control the flow direction and flow rate of the lubricating oil. Elastic member 4 connects oil baffle 3 and the inner wall of installation chamber 101, and its elastic property allows oil baffle 3 to have different positions and states at different rotational speeds. At low speed, oil baffle 3 is mainly subjected to gravity, while at high speed, centrifugal force becomes the main force. This arrangement enables oil baffle 3 to automatically adjust its position according to the change in the force acting on it, to adapt to different working conditions, improve oil pumping efficiency, and ensure that the key components of the compressor are properly lubricated, improving the overall lubrication efficiency and compressor performance.

[0035] In addition, the crankshaft oil pumping assembly can automatically adjust the oiling amount according to the rotation speed of the crankshaft body 1, realize self-adaptive adjustment of the oil pumping amount, ensure sufficient oil pumping amount to meet the lubrication demand when running at low frequency, reduce the oil pumping amount when running at high frequency, avoid excessive oil pumping, ensure the rationality of the oil pumping amount, reduce the compressor vibration and noise caused by uneven oil pumping or excessive oil pumping by optimizing the oil pumping structure, and thus improve the running stability of the refrigerator and the user experience.

[0036] As a specific embodiment, the bottom end of the crankshaft body 1 is provided with a mounting chamber 101, the volume of the mounting chamber 101 can accommodate the elastic member 4 and the oil blocking member 3, and the oil blocking member 3 can be smoothly moved in the mounting chamber 101. The mounting chamber 101 is provided in the crankshaft, which is equivalent to thinning the wall thickness of the crankshaft body 1. In the embodiment, the oil inlet 102 can be formed by penetrating the bottom end of the crankshaft body 1 to form the oil inlet 102, or the oil inlet 102 can be provided on the side wall of the crankshaft body 1, and the oil inlet 102 is communicated with the mounting chamber 101. The oil outlet 103 is provided on the side wall of the crankshaft body 1. Since the oil blocking member 3 moves up and down in the mounting chamber 101, the position of the oil outlet 103 is preferably close to the top of the mounting chamber 101.

[0037] For reference, Figures 1 to 4 As shown in the figure, the bottom end of the crankshaft body 1 is provided with an oil inlet 102, that is, the bottom of the mounting chamber 101 is the oil inlet 102. After the oil blocking member 3 is installed in the mounting chamber 101, a certain distance is left between the outer wall of the oil blocking member 3 and the inner wall of the mounting chamber 101 to form an oil inlet flow channel 501, the oil inlet flow channel 501 is communicated with the oil inlet 102, and the inner wall of the mounting chamber 101 or the outer wall of the oil blocking member 3 is provided with an oil guiding flow channel 502, the oil guiding flow channel 502 is communicated with the oil inlet flow channel 501.

[0038] Specifically, when the oil inlet 102 flows into the lubricating oil, the lubricating oil first flows into the space between the oil blocking member 3 and the inner wall of the mounting chamber 101, that is, the lubricating oil flows into the oil inlet flow channel 501, and then flows into the oil guiding flow channel 502. The oil guiding flow channel 502 guides the lubricating oil into the mounting chamber 101, and the lubricating oil in the mounting chamber 101 flows out from the oil outlet 103. In this process, the lubricating oil flows during the up and down displacement of the oil blocking member 3, and the oil outlet amount is adjusted by the coincidence degree of the oil blocking member 3 and the oil outlet 103.

[0039] In this embodiment, by setting the oil inlet flow channel 501 and the oil guide flow channel 502, the flow path of the lubricating oil is optimized, ensuring that the lubricating oil can flow smoothly from the oil inlet 102, flow inside the installation chamber 101, and finally flow out from the oil outlet 103. This setting helps to reduce the resistance and turbulence of the oil flow, improving the oil pumping efficiency. This embodiment can reduce energy consumption and noise caused by poor oil flow or excessive oil pumping by optimizing the oil flow path and accurately controlling the oil outlet amount, improving the working efficiency and running stability of the compressor, and the flow of lubricating oil in the installation chamber 101 is more orderly, which helps to improve the lubrication efficiency of the key components. The setting of the oil blocking piece 3 cooperates with the flow path of the lubricating oil, so that the dynamic adjustment capability of the oil blocking piece 3 can quickly respond to the working state changes of the compressor and timely adjust the oil outlet amount, improving the response speed of the system.

[0040] For reference Figures 1 to 5 As shown in the figure, the inner wall of the installation chamber 101 is provided with an oil guide flow channel 502, the oil guide flow channel 502 is spiral-shaped, one end of the oil guide flow channel 502 is communicated with the oil inlet flow channel 501, and the other end of the oil guide flow channel 502 extends to the oil outlet 103.

[0041] In this embodiment, compared with setting the oil guide flow channel 502 on the oil blocking piece 3, the oil guide flow channel 502 is set on the inner wall of the installation chamber 101, and the oil guide flow channel 502 is less affected by the displacement of the oil blocking piece 3, ensuring that the lubricating oil in the installation chamber 101 can be smoothly guided to the oil outlet 103. The spiral-shaped oil guide flow channel 502 helps to convert part of the kinetic energy of the lubricating oil into pressure energy, thereby improving the oil pumping efficiency. In essence, the energy state of the fluid is adjusted by changing the shape of the flow channel, and the spiral-shaped oil guide flow channel 502 can guide the lubricating oil to flow in a specific direction, reduce the generation of turbulence and vortex, make the oil flow more stable, and reduce energy loss.

[0042] For reference Figures 1 to 4 As shown in the figure, the oil blocking piece 3 includes an oil blocking section 301 and a connecting section 302, the first end of the oil blocking section 301 is connected with the elastic piece 4, the second end of the oil blocking section 301 is connected with the connecting section 302, the first end of the oil blocking piece 3 is away from the oil outlet 103 or shields part of the oil outlet 103, and the second end of the oil blocking section 301 is provided with an oil passing channel 303.

[0043] Specifically, when the crankshaft body 1 rotates at low speed, under the action of the gravity of the oil blocking piece 3, the connecting section 302 is displaced downward, the oil blocking section 301 is away from the oil outlet 103, the oil outlet 103 is in a fully open state, the greater the elongation of the elastic member 4, at this time the oil outlet 103 is not blocked, the lubricating oil flowing into the mounting chamber 101 from the oil inlet 102 can flow into the oil passing channel 303, so that the lubricating oil can flow out of the oil outlet 103 smoothly; when the crankshaft body 1 rotates at high speed, the oil blocking piece 3 is greatly affected by the centrifugal force, the lubricating oil is affected by the centrifugal force of the crankshaft body 1 to increase the kinetic energy and move upward, taking the connecting section 302 and the oil blocking section 301 to move upward in the mounting chamber 101, extruding the elastic member 4 to deform, the elongation of the elastic member 4 is reduced, the oil blocking section 301 is partially overlapped with the oil outlet 103, that is, the oil blocking piece 3 can block part of the oil outlet 103, part of the lubricating oil in the oil passing channel 303 can be blocked, but the lubricating oil in the mounting chamber 101 can still flow out of the oil outlet 103, only the flow amount is reduced.

[0044] In the present embodiment, the setting of the oil blocking piece 3 allows the oil outlet amount of the oil outlet 103 to be adjusted by the position change of the oil blocking section 301 when the crankshaft body 1 rotates at low speed and high speed. At low speed, the oil blocking section 301 is away from the oil outlet 103, and the oil outlet 103 is fully open, while at high speed, the oil blocking section 301 partially blocks the oil outlet 103, reducing the oil outlet amount. The second end of the oil blocking section 301 is provided with the oil passing channel 303, which allows the lubricating oil to still flow out part of it through the oil passing channel 303 when the oil blocking section 301 blocks part of the oil outlet 103, thereby realizing accurate control of the flow direction of the lubricating oil. By dynamically adjusting the oil outlet amount, energy consumption and noise caused by excessive or insufficient oil pumping can be reduced, and the working efficiency and running stability of the compressor can be improved.

[0045] As a specific embodiment, the oil blocking piece 3 is in a cylindrical structure as a whole, that is, even if there is lubricating oil in the mounting chamber 101, the lubricating oil flows along the circumference of the oil blocking piece 3, and the oil passing channel 303 is opened to make the lubricating oil in the circumferential direction of the oil blocking piece 3 flow more easily to the oil outlet 103.

[0046] For reference Figures 1 to 4 As shown in the figure, the second end outer wall of the oil blocking section 301 is provided with a first groove body 311 and a second groove body 312, and the first groove body 311 and the second groove body 312 are communicated to form the oil passing channel 303.

[0047] In the embodiment, the first groove body 311 and the second groove body 312 are communicated to form the oil passing channel 303, which can guide the circumferential flow of the lubricating oil of the oil retaining member 3 to the oil outlet 103. Through such a structure, the lubricating oil can flow in order from the oil inlet 102, pass through the oil passing channel 303 of the oil retaining member 3, and finally flow out from the oil outlet 103. By reasonably arranging the first groove body 311 and the second groove body 312, the circumferential flow of the lubricating oil can be reduced, which helps to keep the lubricating oil flowing in the predetermined path.

[0048] As a specific embodiment, in order to make the first groove body 311 and the second groove body 312 through which the lubricating oil passes as much as possible in the radial direction of the oil retaining member 3, in order to connect the oil retaining section 301 and the connecting section 302 together, part of the wall thickness of the second end of the oil retaining section 301 is reserved for connecting the connecting section 302.

[0049] For reference, Figures 1 to 4 As shown, the outer wall of the first end of the oil retaining section 301 is provided with a ring groove 304, and one end of the elastic member 4 away from the inner wall of the mounting chamber 101 is mounted in the ring groove 304.

[0050] In the embodiment, the elastic member 4 is a spring, and the spring coefficient is set according to the compressor parameters. The ring groove 304 provides a fixed position, so that the elastic member 4 can be stably mounted on the oil retaining section 301. Such a fixing mode helps to ensure that the elastic member 4 will not be displaced or fall off during operation, thereby ensuring the stability and reliability of the entire oil retaining system. The elastic member 4 has a restoring force, which can be transmitted to the oil retaining section 301 through the connection of the ring groove 304 and the oil retaining section 301, so that the oil retaining section 301 can dynamically adjust the position according to the change of the crankshaft speed, and realize the control of the oil outlet amount. In addition, through the cooperation of the ring groove 304 and the elastic member 4, the direct contact and friction between the oil retaining section 301 and the crankshaft or other components are reduced, thereby reducing the wear and prolonging the service life of the oil retaining assembly 2. The setting of the ring groove 304 simplifies the installation process of the elastic member 4, makes the assembly of the oil retaining section 301 and the elastic member 4 more convenient and fast, and improves the production efficiency and assembly quality.

[0051] As a specific embodiment, the oil outlet 103 can be circular or elliptical, and the outer circumferential wall of the crankshaft body 1 is provided with an outer spiral oil groove. The setting position of the oil outlet 103 cooperates with the outer spiral oil groove, and at the same time, the setting position of the oil passing channel 303 is also considered. The area, shape and position of the oil passing channel 303 and the oil outlet 103 are set according to the specific oil pumping amount requirement.

[0052] For reference, Figures 1 to 7As shown, the oil suction sleeve 6 is connected to the bottom end of the crankshaft body 1, and the oil suction sleeve 6 has an oil suction port 601 that is in communication with the oil inlet port 102.

[0053] Specifically, the oil suction sleeve 6 is sleeved on the bottom end of the crankshaft body 1, and the oil suction sleeve 6 rotates synchronously during the rotation of the crankshaft body 1. The oil suction sleeve 6 has a certain volume of oil storage cavity, and the lubricating oil in the oil pool is higher than the oil suction sleeve 6. The lubricating oil flows from the oil suction port 601 into the oil storage cavity and then into the oil inlet port 102. During the displacement of the oil blocking piece 3, the lubricating oil also flows.

[0054] In this embodiment, the oil suction sleeve 6 is directly connected to the bottom end of the crankshaft body 1, which can be closer to the oil pool, thereby more effectively sucking the lubricating oil. Through the communication between the oil suction port 601 of the oil suction sleeve 6 and the oil inlet port 102, the oil circuit of the entire lubricating system can be optimized, and the lubricating oil can be transported more directly and efficiently.

[0055] For reference Figures 1 to 7 As shown, the oil suction sleeve 6 is connected to the bottom end of the crankshaft body 1, and the oil suction sleeve 6 has an oil suction port 601 that is in communication with the oil inlet port 102.

[0056] Specifically, the oil suction sleeve 6 is sleeved on the bottom end of the crankshaft body 1, and the oil suction sleeve 6 rotates synchronously during the rotation of the crankshaft body 1. The oil suction sleeve 6 has a certain volume of oil storage cavity, and the lubricating oil in the oil pool is higher than the oil suction sleeve 6. The lubricating oil flows from the oil suction port 601 into the oil storage cavity and then into the oil inlet port 102. During the displacement of the oil blocking piece 3, the lubricating oil also flows.

[0057] In this embodiment, the oil suction sleeve 6 is directly connected to the bottom end of the crankshaft body 1, which can be closer to the oil pool, thereby more effectively sucking the lubricating oil. Through the communication between the oil suction port 601 of the oil suction sleeve 6 and the oil inlet port 102, the oil circuit of the entire lubricating system can be optimized, and the lubricating oil can be transported more directly and efficiently.

[0058] For reference Figures 4 to 7As shown, the end of the oil baffle 3 away from the elastic member 4 is provided with a sliding groove 305, and the bottom end of the connecting section 302 is provided with the sliding groove 305. The end of the oil guide plate 7 away from the oil suction port 601 extends into the sliding groove 305. In the process of rotation of the crankshaft body 1, the oil suction sleeve 6, the oil guide plate 7 and the oil baffle 3 are all rotating, but the difference is that only the oil baffle 3 is displaced in the up-down direction.

[0059] Specifically, when the crankshaft body 1 rotates at low speed, under the action of gravity of the oil baffle 3, the connecting section 302 is displaced downward, the length of the oil guide plate 7 extending into the sliding groove 305 is relatively long, the oil baffle section 301 is away from the oil outlet 103, and the oil outlet 103 is in a fully open state. The greater the elongation of the elastic member 4, the oil outlet 103 is not blocked at this time, and the lubricating oil flowing into the installation chamber 101 from the oil inlet 102 can flow into the oil passage 303, so that the lubricating oil can smoothly flow out of the oil outlet 103. When the crankshaft body 1 rotates at high speed, the oil baffle 3 is greatly affected by the centrifugal force, the kinetic energy of the lubricating oil increases under the influence of the centrifugal force of the crankshaft body 1, and the connecting section 302 and the oil baffle section 301 move upward in the installation chamber 101. The connecting section 302 gradually slides out of the oil guide plate 7, the elastic member 4 is deformed by extrusion, the elongation of the elastic member 4 is reduced, and the oil baffle section 301 partially coincides with the oil outlet 103, that is, the oil baffle 3 can block part of the oil outlet 103. A part of the lubricating oil in the oil passage 303 can be blocked, but the lubricating oil in the installation chamber 101 can still flow out of the oil outlet 103, but the flow rate is reduced.

[0060] In this embodiment, when the crankshaft rotates at low speed, the length of the oil guide plate 7 extending into the sliding groove 305 is relatively long, the oil baffle section 301 is away from the oil outlet 103, and the oil outlet 103 is fully open. When rotating at high speed, the centrifugal force acting on the oil baffle 3 increases, and the connecting section 302 gradually slides out of the oil guide plate 7, thereby partially blocking the oil outlet 103 and reducing the oil flow rate. Through the cooperation of the sliding groove 305 and the oil guide plate 7, the flow direction and flow rate of the lubricating oil can be accurately controlled. This arrangement helps to form a stable flow of lubricating oil between the oil baffle section 301 and the oil outlet 103, thereby reducing wear and noise caused by unstable oil flow. The sliding groove 305 allows the oil baffle 3 to slide on the oil guide plate 7. This arrangement can dynamically adjust the position of the oil baffle 3 according to the change in the rotational speed of the crankshaft, thereby achieving accurate control of the oil flow rate. The sliding groove 305 ensures that the oil baffle 3 can smoothly displace upward and downward during the rotation of the crankshaft, and the oil baffle 3 can still divide the lubricating oil into two paths during the upward and downward displacement, and the two chambers are relatively independent.

[0061] As a specific embodiment, the spiral groove of the oil guide flow channel 502 can be fixed pitch, or variable pitch, or double spiral line arrangement, and the oil guide plate 7 can also be arranged in a spiral shape.

[0062] For reference Figures 1 to 7 The compressor comprises a crankshaft oil pumping assembly.

[0063] Specifically, the compressor is a variable frequency compressor, and an oil pool is arranged in the lower shell of the compressor. The compressor is provided with a motor, the motor drives the rotation of the crankshaft body 1, and the oil supply is insufficient when the compressor operates at a low frequency. Under the action of the gravity of the oil blocking piece 3, the connecting section 302 is displaced downward, the oil guide piece 7 extends into the chute 305 for a relatively long length, the oil blocking section 301 is away from the oil outlet 103, and the oil outlet 103 is in a fully open state. The greater the elongation of the elastic member 4, and at this time, the oil outlet 103 is not blocked, and the lubricating oil flowing into the mounting cavity 101 from the oil inlet 102 can flow into the oil passing channel 303, so that the lubricating oil can smoothly flow out of the oil outlet 103. When the compressor operates at a high frequency, the oil blocking piece 3 is greatly affected by the centrifugal force, the lubricating oil is affected by the centrifugal force of the crankshaft body 1 to increase the kinetic energy and move upward, and the connecting section 302 and the oil blocking section 301 move upward in the mounting cavity 101. The connecting section 302 gradually slides out of the oil guide piece 7, the elastic member 4 is deformed by extrusion, the elongation of the elastic member 4 is reduced, and the oil blocking section 301 partially coincides with the oil outlet 103, that is, the oil blocking piece 3 can block part of the oil outlet 103. The lubricating oil in the oil passing channel 303 can be blocked, but the lubricating oil in the mounting cavity 101 can still flow out of the oil outlet 103, only the flow amount is reduced.

[0064] The crankshaft oil pumping assembly can realize low-frequency oil supply and self-adaptive oil supply of the compressor, thereby solving the problems that the low-frequency oil supply amount of the variable frequency compressor is too small and the high-frequency oil supply amount is too large. The crankshaft oil pumping assembly can self-adaptively adjust the oil pumping amount of the crankshaft, and the variable frequency compressor can be well and specifically lubricated and cooled to the cylinder hole in the case of low-frequency or high-frequency operation, the useless oil pumping is reduced, and the operating frequency band of the compressor is widened.

[0065] A refrigerator comprises the compressor.

[0066] It is easy for those skilled in the art to understand that the above advantageous modes can be freely combined and superimposed without conflict.

[0067] The above is only a preferred embodiment of the utility model, and does not limit the utility model. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model. The above is only a preferred embodiment of the utility model, and it should be pointed out that those skilled in the art can make several improvements and modifications without departing from the technical principle of the utility model, and these improvements and modifications should be regarded as the protection scope of the utility model.

Claims

1. A crankshaft oil pumping assembly characterized by, The application relates to a crankshaft body (1) and an oil blocking assembly (2). The crankshaft body (1) is provided with an installation cavity (101), an oil inlet (102) and an oil outlet (103), and the oil inlet (102) and the oil outlet (103) are communicated with the installation cavity (101). The oil blocking assembly (2) comprises an oil blocking piece (3) and an elastic piece (4), one end of the elastic piece (4) is connected with the inner wall of the installation cavity (101), the other end of the elastic piece (4) is connected with the oil blocking piece (3), the oil blocking piece (3) is movably arranged in the installation cavity (101) along the axial direction of the crankshaft body (1), and the oil blocking piece (3) is away from the oil outlet (103) or shields part of the oil outlet (103). The oil blocking piece (3) comprises an oil blocking section (301) and a connecting section (302), the first end of the oil blocking section (301) is connected with the elastic piece (4), the second end of the oil blocking section (301) is connected with the connecting section (302), the first end of the oil blocking piece (3) is away from the oil outlet (103) or shields part of the oil outlet (103), and the second end of the oil blocking section (301) is provided with an oil passing channel (303).

2. The crankshaft oil pumping assembly of claim 1, wherein First and second groove bodies (311 and 312) are arranged on the outer wall of the second end of the oil blocking section (301), and the first and second groove bodies (311 and 312) are communicated to form the oil passing channel (303).

3. The crankshaft oil pumping assembly of claim 2, wherein, A ring groove (304) is arranged on the outer wall of the first end of the oil blocking section (301), and one end of the elastic piece (4) away from the inner wall of the installation cavity (101) is arranged in the ring groove (304).

4. The crankshaft oil pumping assembly of claim 2, wherein, An oil inlet flow channel (501) is arranged between the outer wall of the oil blocking piece (3) and the inner wall of the installation cavity (101), the bottom end of the crankshaft body (1) is provided with the oil inlet (102), the oil inlet flow channel (501) is communicated with the oil inlet (102), and an oil guide flow channel (502) is arranged on the inner wall of the installation cavity (101) or the outer wall of the oil blocking piece (3), and the oil guide flow channel (502) is communicated with the oil inlet flow channel (501).

5. The crankshaft oil pumping assembly of claim 1 wherein, The oil guide flow channel (502) is arranged on the inner wall of the installation cavity (101), the oil guide flow channel (502) is in a spiral shape, one end of the oil guide flow channel (502) is communicated with the oil inlet flow channel (501), and the other end of the oil guide flow channel (502) extends to the oil outlet (103).

6. The crankshaft oil pumping assembly of claim 5, wherein, An oil suction sleeve (6) is further arranged, the oil suction sleeve (6) is connected with the bottom end of the crankshaft body (1), and the oil suction sleeve (6) is provided with an oil suction port (601), and the oil suction port (601) is communicated with the oil inlet (102).

7. The crankshaft oil pumping assembly of any one of claims 1 to 6, wherein, ​ 8. The crankshaft oil pumping assembly of claim 7, wherein, The oil suction sleeve (6) is provided with an oil guide sheet (7), the oil suction port (601) is arranged at the bottom of the oil suction sleeve (6), along the central axis of the oil suction port (601), the oil guide sheet (7) divides the inner cavity of the oil suction sleeve (6) into a first cavity (602) and a second cavity (603), a part of the oil suction port (601) communicates with the first cavity (602), another part of the oil suction port (601) communicates with the second cavity (603), and the first cavity (602) and the second cavity (603) both communicate with the oil inlet (102).

9. The crankshaft oil pumping assembly of claim 8, wherein, The end, away from the elastic member (4), of the oil blocking piece (3) is provided with a chute (305), and the end, away from the oil suction port (601), of the oil guide sheet (7) extends into the chute (305).

10. A compressor characterized by, A compressor comprising a crankshaft oil pumping assembly as claimed in any one of claims 1 to 9.

11. A refrigerator characterized by comprising: A compressor comprising a crankshaft oil pumping assembly as claimed in claim 10.

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