Eccentric slider for crankshaft, scroll compressor, and temperature control equipment

Abstract

This application belongs to the technical field of compressor design, and particularly relates to an eccentric slider for a crankshaft, a scroll compressor and a temperature control device. The eccentric slider for a crankshaft includes a slider body, and the slider body is provided with an assembly hole for inserting an eccentric shaft section of a crankshaft. The outer peripheral wall surface of the slider body includes a bearing surface and a non-bearing surface opposite to the bearing surface, and the bearing surface is used to drive a movable scroll, and a cavity is provided on the non-bearing surface, and the cavity is used to accommodate oil. By applying the technical solution of this application, the oil film shear force existing between the circumferential surface of the eccentric slider and the corresponding side wall of the movable scroll can be reduced, and the performance and reliability of the scroll compressor can be effectively improved.

Description

Technical Field

[0001] This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on June 24, 2022, with an application number of 202210721766.3 and an invention title of "Eccentric slider for crankshaft, scroll compressor and temperature control equipment", and the entire content thereof is incorporated herein by reference.

[0002] This application relates to the technical field of compressor design, and specifically to an eccentric slider for a crankshaft, a scroll compressor and a temperature control equipment.

Background Art

[0003] A scroll compressor generally has a movable scroll and a fixed scroll for compressing a working fluid. Among them, the movable scroll realizes planar rotation while revolving under the drive of an eccentric shaft section of a crankshaft, and thereby cooperates with the fixed scroll to compress the fluid. Generally, a radially adjustable eccentric slider is installed between the eccentric shaft section and the movable scroll. When the movable scroll receives a large load due to the compressed fluid (for example, when a fluid with large particles and thus a liquid enters a compression chamber composed of a scroll plate of the movable scroll and a scroll plate of the fixed scroll, and the radial load exerted on the scroll plate by the fluid or liquid with large particles changes greatly), the eccentric slider can perform radial adjustment with respect to the eccentric shaft section to realize an unloading function, reduce the probability that the scroll plate of the movable scroll or the scroll teeth of the fixed scroll are damaged by the radial load, and thereby improve the reliability of the scroll compressor. However, in the process of the eccentric slider driving the movable scroll, there is an oil film shear force between the circumferential surface of the eccentric slider and the corresponding side wall of the movable scroll, which is disadvantageous to the performance and reliability of the scroll compressor.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The object of the present application includes, but is not limited to, solving the problem of how to reduce the oil film shear force existing between the circumferential surface of the eccentric slider and the corresponding side wall of the movable scroll, and providing an eccentric slider for a crankshaft, a scroll compressor, and a temperature control facility.

Means for Solving the Problems

[0005] The technical solution adopted in the embodiments of the present application is as follows.

[0006] In a first aspect, an eccentric slider for a crankshaft is provided. The eccentric slider for a crankshaft includes a slider body, and an assembly hole into which an eccentric shaft section of the crankshaft is inserted is provided in the slider body. The outer peripheral wall surface of the slider body includes a supporting surface and a non-supporting surface facing the supporting surface. The supporting surface is used to drive the movable scroll, and a cavity is provided in the non-supporting surface. The cavity is used to accommodate oil.

[0007] In an embodiment, the non-supporting surface includes a cavity side surface. Both sides of the cavity side surface are respectively connected to both sides of the supporting surface. The distance from the cavity side surface to the central axis of the slider body is shorter than the distance from the supporting surface to the central axis of the slider body. The cavity side surface serves as the side wall of the cavity.

[0008] In an embodiment, the non-supporting surface further includes a first transition side surface and a second transition side surface. The first transition side surface and the second transition side surface are respectively connected to both sides of the cavity side surface. One side of the first transition side surface away from the cavity side surface is connected to one side of the supporting surface, and one side of the second transition side surface away from the cavity side surface is connected to the other side of the supporting surface. The distance from the first transition side surface to the central axis of the slider body and the distance from the second transition side surface to the central axis of the slider body are both longer than the distance from the cavity side surface to the central axis of the slider body, and both the distance from the first transition side surface to the central axis of the slider body and the distance from the second transition side surface to the central axis of the slider body are shorter than or equal to the distance from the supporting surface to the central axis of the slider body.

[0009] In one embodiment, the cavity is a through groove extending along the axial direction of the slider body.

[0010] In one embodiment, the cavity includes a plurality of through grooves, each through groove extends along the extension direction of the axis of the slider body, and two adjacent through grooves are arranged at intervals.

[0011] In one embodiment, a blocking edge for preventing oil leakage is provided at one end of the cavity away from the movable scroll.

[0012] In one embodiment, the angular range of the included angle formed by the lines connecting both sides of the cavity to the axis of the slider body respectively is 60° - 120°.

[0013] In one embodiment, along the rotation direction of the eccentric shaft section, a flow-through side surface for the oil to flow along the extension direction of the central axis of the slider body is provided in the rear region of the bearing surface.

[0014] In a second aspect, a scroll compressor is provided, and the scroll compressor includes a crankshaft, on which an eccentric shaft section and an oil passage extending along the axial direction of the crankshaft are provided, and the oil passage penetrates the eccentric shaft section, and the above-mentioned crankshaft, a movable scroll with a mounting portion provided thereon. The scroll compressor further includes the above-mentioned eccentric slider for the crankshaft, the eccentric shaft section is inserted into the assembly hole, and the slider body is mounted between the mounting portion and the eccentric shaft section.

[0015] In one embodiment, the scroll compressor further includes a movable scroll bearing, the movable scroll bearing is fixedly mounted in the mounting portion, the slider body is inserted into the bearing hole of the movable scroll bearing, and the outer peripheral wall of the slider body is clearance-fitted with the hole wall of the bearing hole of the movable scroll bearing.

[0016] In an embodiment, the size range of the gap between the outer wall of the eccentric slider and the hole wall of the bearing hole of the movable scroll bearing is 0.1 mm to 0.6 mm.

[0017] In an embodiment, the size range of the gap between the wall surface of the cavity and the hole wall of the bearing hole of the corresponding movable scroll bearing is 0.2 mm to 0.6 mm.

[0018] In a third aspect, temperature control equipment is provided. Specifically, the temperature control equipment includes the above-mentioned scroll compressor.

[0019] To more clearly explain the technical solutions in the embodiments of the present application, the necessary drawings used in the description of the embodiments or exemplary technologies are briefly described below. The following drawings are only some embodiments of the present application, and it is obvious to those skilled in the art that other related drawings can be obtained based on these drawings without creative efforts.

Brief Description of the Drawings

[0020]

Figure 1

Figure 2

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Embodiments for Carrying Out the Invention

[0021] In order to make the object, technical solution and advantages of the present application clearer and easier to understand, the present application will be described in more detail below together with the drawings and embodiments. It should be understood that the specific embodiments described herein are used only for interpreting the present application and not for limiting the present application.

[0022] In addition, when a member is referred to as being "fixed" or "installed" to another member, the member can be directly or indirectly fixed or installed to another part. When a member is referred to as being "connected" to another member, the member can be directly or indirectly connected to another part. The orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc. is the orientation or positional relationship shown based on the drawings and is only for facilitating the description, and does not indicate or imply that the mentioned device or element must have a specific orientation, be configured and operated in a specific orientation, and thus should not be understood as limiting the present application. A person skilled in the art can understand the specific meaning of the above terms according to the specific situation. "First" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly designating the number of technical features. "A plurality" means two or more unless otherwise clearly and specifically limited.

[0023] In order to explain the technical solution provided by the present application, it will be described in detail below together with specific drawings and embodiments.

[0024] As shown in FIG. 1, an embodiment of the present application provides a scroll compressor including a frame 51, an Oldham ring 53, a crankshaft 20, a crankshaft bearing 54, an eccentric slider, a movable scroll 30, a fixed scroll (not shown), a casing (not shown), etc. During assembly, a housing chamber is installed in the casing, the fixed scroll is fixedly assembled to the casing and located at the top position of the housing chamber, the frame 51 is installed in the housing chamber, the movable scroll 30 is installed on the side facing the fixed scroll of the frame 51, the scroll plate of the movable scroll 30 and the scroll plate of the fixed scroll mesh with each other to form a compression chamber, the movable scroll 30 can move relative to the frame 51, the Oldham ring 53 is movably connected to the frame 51, and the movement of the movable scroll 30 relative to the frame 51 is restricted and guided through the Oldham ring 53. The crankshaft 20 is assembled to the frame 51 rotatably via the crankshaft bearing 54. An eccentric shaft section 21 is installed on the crankshaft 20. An attachment portion 31 is installed on one side of the movable scroll 30 away from the fixed scroll, and the eccentric shaft section 21 is drivingly connected to the attachment portion 31 via the eccentric slider. After assembly, the space between the movable scroll 30 and the frame 51 is covered and combined to form an oil storage chamber 52. An oil passage 22 extending along the axial direction of the crankshaft 20 is installed on the crankshaft 20. The oil passage 22 penetrates through the eccentric shaft section 21, the oil passage 22 communicates with the oil storage chamber 52, and the oil passage 22 extends into an oil sump at the bottom of the casing. In the process of compressing the fluid in the compression chamber by the relative movement between the movable scroll 30 and the fixed scroll, the oil in the oil sump is sucked up through the oil passage 22 under the action of the centrifugal force caused by the high-speed rotation of the crankshaft 20, flows down from the top end of the eccentric shaft section 21, enters between the circumferential surface of the eccentric slider and the corresponding side wall of the movable scroll, and the oil can enter the oil storage chamber 52. Then, the oil in the oil storage chamber 52 lubricates between the crankshaft bearing 54 and the end faces of the attachment portion 31 of the movable scroll 30 and the frame 51, reduces wear and extends the service life.

[0025] In the operating process of an existing scroll compressor, the bearing surface of the eccentric slider and the inner wall of the movable scroll are always in a pressing state. The oil film formed here transmits all the driving force required to resist the compressed fluid between the movable scroll and the fixed scroll. Therefore, due to the shear force on the oil film (i.e., the oil film shear force), the temperature of the oil film rises and the power consumption increases. In fact, in the existing scroll compressor, in the process of the eccentric slider driving the movable scroll, an oil film is formed between the circumferential surface of the eccentric slider and the corresponding side wall of the movable scroll. That is, there is an oil film shear force between the circumferential surface of the eccentric slider and the corresponding side wall of the movable scroll, which is disadvantageous to the performance and reliability of the scroll compressor.

[0026] In order to enable the eccentric shaft section 21 of the crankshaft 20 to drive the movable scroll 30 more efficiently, as shown in FIG. 2, the embodiment of the present application provides an eccentric slider, which is assembled to the eccentric shaft section 21. The eccentric slider is mounted between the mounting portion 31 and the eccentric shaft section 21. That is, the eccentric slider includes a slider body 10, and an assembly hole 11 is provided in the slider body 10. The assembly hole 11 penetrates both ends of the slider body 10 along the axis of the slider body 10. The eccentric shaft section 21 is inserted into the assembly hole 11. The outer peripheral wall surface of the slider body 10 includes a bearing surface 12 and a non-bearing surface 13 facing the bearing surface 12. The bearing surface 12 is used to drive the movable scroll 30, and a cavity 14 is formed in the non-bearing surface 13. That is, the space corresponding to the cavity 14 is a space surrounded by a part of the non-bearing surface 13 and the corresponding side wall of the movable scroll 30. The cavity 14 is used to accommodate the oil liquid pressed by the bearing surface 12 and the movable scroll 30 in the direction from the bearing surface 12 to the non-bearing surface 13.

[0027] The eccentric slider provided by the embodiment of the present application is applied and assembled to a scroll compressor. In this way, when the crankshaft 20 rotates so that the eccentric shaft section 21 rotates the axis of the slider body 10 around the axis of the crankshaft 20 (rotates along the r direction shown in FIG. 2) during the startup and operation of the scroll compressor, the bearing surface 12 of the slider body 10 presses the corresponding inner wall of the movable scroll 30. Since the oil is stored between the bearing surface 12 and the corresponding inner wall of the movable scroll 30, the oil is pressed to form an oil film. A part of the oil pressed here enters the cavity 14 of the non-bearing surface 13. Also, since a large amount of oil exists between the cavity 14 and the corresponding side wall of the movable scroll 30, the pressing force generated by shearing the oil film between the cavity 14 and the corresponding side wall of the movable scroll 30 is reduced, that is, the oil film shearing force between the cavity 14 and the corresponding side wall of the movable scroll 30 is reduced. Thus, the overall oil film shearing force between the circumferential surface of the eccentric slider and the corresponding side wall of the movable scroll 30 is reduced as a whole, effectively improving the performance and reliability of the scroll compressor.

[0028] In the embodiment of the present application, the non-bearing surface 13 includes a cavity side surface 141 as the side wall of the cavity 14. Specifically, both sides of the cavity side surface 141 are respectively connected to both sides of the bearing surface 12, and the distance from the cavity side surface 141 to the central axis of the slider body 10 is shorter than the distance from the bearing surface 12 to the central axis of the slider body 10. That is, the cavity side surface 141 is obtained by machining the circumferential surface of the cylindrical slider body 10 (it may be formed by turning machining or grinding machining). In this way, after the slider body 10 enters and is attached to the attachment portion 31, a large gap is formed between the cavity side surface 141 and the corresponding side wall of the movable scroll 30. By reducing the thickness of the oil film formed on the cavity side surface 141, that is, reducing the oil film shearing force, the overall oil film shearing force between the circumferential surface of the eccentric slider and the corresponding side wall of the movable scroll 30 is reduced as a whole, effectively improving the performance and reliability of the scroll compressor.

[0029] Furthermore, as shown in FIG. 4, the non-support surface 13 further includes a first transition side surface 131 and a second transition side surface 132. The first transition side surface 131 and the second transition side surface 132 are respectively connected to both sides of the cavity side surface 141. One side of the first transition side surface 131 away from the cavity side surface 141 is connected to one side of the support surface 12, and one side of the second transition side surface 132 away from the cavity side surface 141 is connected to the other side of the support surface 12. The transition between the support surface 12 and the cavity side surface 141 through the first transition side surface 131 and the second transition side surface 132 ensures a smooth connection between the support surface 12 and the cavity side surface 141, and guarantees the driving ability of the eccentric slider with respect to the mounting portion 31. In the embodiment of the present application, both the distance from the first transition side surface 131 to the central axis of the slider body 10 and the distance from the second transition side surface 132 to the central axis of the slider body 10 are longer than the distance from the cavity side surface 141 to the central axis of the slider body 10, and both the distance from the first transition side surface 131 to the central axis of the slider body 10 and the distance from the second transition side surface 132 to the central axis of the slider body 10 are shorter than or equal to the distance from the support surface to the central axis of the slider body 10. Preferably, both the distance from the first transition side surface 131 to the central axis of the slider body 10 and the distance from the second transition side surface 132 to the central axis of the slider body 10 are shorter than the distance from the support surface to the central axis of the slider body 10.

[0030] As shown in FIGS. 4 and 5, a blocking edge 15 for preventing leakage of oil fluid is installed on the cavity side surface 141. The blocking edge 15 is fixedly connected to one end away from the movable scroll 30 of the cavity side surface 141, and there is basically contact between the arc-shaped side wall of the blocking edge 15 and the side wall of the corresponding movable scroll 30. In this way, when the oil fluid is stored at the position of the cavity side surface 141, the oil fluid flows downward due to gravity, and the blocking edge 15 can prevent the oil fluid from leaking downward at the cavity side surface 141, so that the oil fluid can stay longer at the position of the cavity side surface 141, that is, reduce the thickness of the oil film formed on the cavity side surface 141, that is, reduce the oil film shear force. In this embodiment, the thickness of the blocking edge 15 along the axial direction of the slider body 10 is greater than or equal to 2 mm.

[0031] As shown in FIGS. 6 and 7, in the eccentric slider provided by another embodiment, the cavity 14 is a through groove 142 extending along the axial direction of the slider body 10, that is, both ends of the through groove 142 penetrate through both end faces of the slider body 10. Specifically, the contour shape of the through groove 142 is arc-shaped when cut along the axis perpendicular to the slider body 10. The through groove 142 may be formed by milling machining. In addition, a blocking edge 15 for preventing leakage of oil fluid may be further installed at one end of the through groove 142 away from the movable scroll 30. In this way, when the oil fluid is stored in the through groove 142, the oil fluid flows downward due to gravity, and the blocking edge 15 can prevent the oil fluid from leaking downward in the through groove 142, so that the oil fluid can stay longer at the position of the cavity side surface 141, that is, reduce the thickness of the oil film formed on the cavity side surface 141, that is, reduce the oil film shear force. In this embodiment, the thickness of the blocking edge 15 along the axial direction of the slider body 10 is greater than or equal to 2 mm.

[0032] As shown in FIGS. 8 and 9, in an eccentric slider proposed by another embodiment, the cavity 14 includes a plurality of through grooves 143, each of the through grooves 143 extends along the axial direction of the slider body 10, and each through groove 143 is preferably a straight groove parallel to the axis of the slider body 10, and two adjacent through grooves 143 are arranged at intervals. In this embodiment, both ends of each through groove 143 penetrate through both end faces of the slider body 10, and each through groove 143 is sequentially arranged so as to form a serrated contour. In addition, a blocking edge 15 for preventing oil leakage may be further provided at one end of all the through grooves 143 away from the movable scroll 30. In this way, when the oil liquid is stored in each through groove 143, the oil liquid flows downward by gravity, and the blocking edge 15 can prevent the oil liquid from leaking downward in each through groove 143, and the oil liquid can stay longer at the position of the cavity side surface 141, that is, reduce the thickness of the oil film formed on the cavity side surface 141, that is, reduce the oil film shear force. In this embodiment, the thickness of the blocking edge 15 along the axial direction of the slider body 10 is greater than or equal to 2 mm.

[0033] As shown in FIG. 3, the angular range of the included angle β formed by the lines connecting both sides of the cavity 14 to the axis of the slider body 10 is 60° to 120°. Preferably, β is 90° to 100°. In the slider body 10 provided by the embodiment of the present application, β = 94°.

[0034] As shown in FIGS. 2 to 9, in the slider body of the embodiment of the present application, along the rotation direction (r direction shown in FIG. 2) of the eccentric shaft section 21, a flow-through side surface 16 for the oil to flow along the extending direction of the central axis of the slider body 10 is provided in the rear region of the supporting surface 12. In this way, when the oil flows out from the top of the eccentric shaft section 21 and reaches the axial edge of the slider body 10, the oil enters between the circumferential surface of the slider body 10 and the corresponding side wall of the movable scroll 30 (at this time, the oil flows into the cavity 14 and the flow-through side surface 16), and since a passage for the oil to flow is formed between the flow-through side surface 16 and the corresponding side surface of the movable scroll 30, more oil quickly flows downward from the passage. Moreover, since the flow-through side surface 16 is close to the supporting surface 12, the oil flowing down from the flow-through side surface 16 can take away the frictional heat generated in the oil film due to the action of the oil film shear force on the supporting surface 12, effectively reducing the temperature, and improving the reliability of the scroll compressor.

[0035] As shown in FIG. 1, the scroll compressor further includes a movable scroll bearing 40, the movable scroll bearing 40 is fixedly attached to the mounting portion 31, the slider body 10 is inserted and installed in the bearing hole of the movable scroll bearing 40, and the outer wall of the slider body 10 is clearance-fitted to the hole wall of the bearing hole of the movable scroll bearing 40, so that the oil flowing out from the top of the eccentric shaft section 21 enters the gap between the circumferential surface of the slider body 10 and the hole wall of the bearing hole of the movable scroll bearing 40. Generally, the movable scroll bearing 40 is made of a material with self-lubricating ability. In the process of the scroll compressor being used for a long time, it is inevitable that the oil shortage occurs between the circumferential surface of the slider body 10 and the hole wall of the bearing hole. At this time, the contact between the supporting surface 12 of the slider body 10 and the corresponding hole wall of the bearing hole is dry friction. However, since the movable scroll bearing 40 has self-lubricating ability, the movable scroll bearing 40 protects the inner wall of the mounting portion 31 of the movable scroll 30 and the supporting surface 12 of the slider body 10, effectively reducing the wear caused by the direct friction between the supporting surface 12 and the hole wall of the bearing hole, and improving the performance and reliability of the scroll compressor.

[0036] As shown in FIG. 3, the size range of the gap between the outer peripheral wall of the slider body 10 and the hole wall of the bearing hole of the movable scroll bearing 40 is 0.1 mm to 0.6 mm. In the embodiment of the present application, particularly, the size range of the gap H1 between the bearing surface 12 and the corresponding hole wall of the movable scroll bearing 40 is preferably 0.1 mm to 0.5 mm. In this way, the oil between the bearing surface 12 and the inner side wall of the mounting portion 31 of the movable scroll 30 can always form an oil film to lubricate the position, and the oil film shear force generated by being pressed against the bearing surface 12 and the hole wall of the corresponding bearing hole can act to avoid the complete destruction of the oil film and the direct dry friction between the bearing surface 12 and the hole wall of the corresponding bearing hole.

[0037] Furthermore, as shown in FIG. 3, the size range of the gap H2 between the wall surface of the cavity portion 14 and the hole wall of the corresponding bearing hole is 0.2 mm to 0.6 mm. In the present application, the gap H1 between the bearing surface 12 and the corresponding hole wall of the movable scroll bearing 40 is smaller than the gap H2 between the wall surface of the cavity portion 14 and the hole wall of the corresponding bearing hole (that is, H1 < H2). In this way, the oil is stored at the position of the cavity portion 14, and the oil film thickness between the cavity portion 14 and the hole wall of the corresponding bearing hole is effectively reduced, that is, the oil film shear force is reduced, so that the overall oil film shear force between the circumferential surface of the eccentric slider and the corresponding side wall of the movable scroll 30 is reduced as a whole, effectively improving the performance and reliability of the scroll compressor.

[0038] According to still another aspect of the present application, a temperature control device (not shown) is provided. Specifically, the temperature control device includes the above-mentioned scroll compressor of the present application, and this scroll compressor is applied to compress the refrigerant of the temperature control device.

[0039] The above is only any embodiment of the present application and does not limit the present application. For those skilled in the art, various changes and variations are possible in the present application. Any corrections, equivalent substitutions, improvements, etc. made in the spirit and principle of the present application shall also be included within the scope of the claims of the present application.

Explanation of Reference Numerals

[0040] 10. Slider body, 11. Assembly hole, 12. Support surface, 13. Non-support surface, 131. First transition side surface, 132. Second transition side surface, 14. Cavity part, 141. Cavity side surface, 142. Through groove, 143. Through groove, 15. Blocking edge, 16. Flow side surface 20. Crankshaft, 21. Eccentric shaft section, 22. Oil passage 30. Movable scroll, 31. Mounting part 40. Movable scroll bearing 51. Frame, 52. Oil storage chamber, 53. O-ring, 54. Crankshaft bearing

Claims

1. including a slider body, an elongated assembly hole for inserting an eccentric shaft section of a crankshaft is provided in the slider body, the outer peripheral wall surface of the slider body includes a supporting surface and a non-supporting surface facing the supporting surface, the supporting surface is an eccentric slider for the crankshaft used to drive a movable scroll, a cavity is provided in the non-supporting surface, and the cavity is used to accommodate oil fluid, the cavity includes a through groove extending along the axial direction of the slider body, a blocking edge for preventing leakage of oil fluid is provided at one end of the cavity away from the movable scroll, along the rotation direction of the eccentric shaft section, a flow-through side surface for the oil fluid to flow is provided in the rear region of the supporting surface, the cavity and the flow-through side surface are formed by being shifted to one side with respect to the longitudinal axis of the assembly hole, an eccentric slider for a crankshaft, characterized in that.

2. the non-supporting surface includes a cavity side surface, both sides of the cavity side surface are respectively connected to both sides of the supporting surface, the distance from the cavity side surface to the central axis of the slider body is shorter than the distance from the supporting surface to the central axis of the slider body, and the cavity side surface serves as the side wall of the cavity, the eccentric slider for a crankshaft according to claim 1, characterized in that.

3. the non-supporting surface further includes a first transition side surface and a second transition side surface, the first transition side surface and the second transition side surface are respectively connected to both sides of the cavity side surface, one side of the first transition side surface away from the cavity side surface is connected to one side of the supporting surface, one side of the second transition side surface away from the cavity side surface is connected to the other side of the supporting surface, the distance from the first transition side surface to the central axis of the slider body and the distance from the second transition side surface to the central axis of the slider body are both longer than the distance from the cavity side surface to the central axis of the slider body, and the distance from the first transition side surface to the central axis of the slider body and the distance from the second transition side surface to the central axis of the slider body are both shorter than or equal to the distance from the supporting surface to the central axis of the slider body, the eccentric slider for a crankshaft according to claim 2, characterized in that.

4. the cavity includes one of the through grooves, the eccentric slider for a crankshaft according to claim 1, characterized in that.

5. The cavity portion includes a plurality of the through grooves, each of the through grooves extends along the extension direction of the axis of the slider body, and two adjacent through grooves are arranged at an interval. The eccentric slider for a crankshaft according to claim 1, characterized in that.

6. The angle range of the included angle formed by the lines connecting both sides of the cavity portion to the central axis of the slider body respectively is 60° to 120°. The eccentric slider for a crankshaft according to claim 1, characterized in that.

7. A crankshaft, in which an eccentric shaft section and an oil passage extending along the axial direction of the crankshaft are provided on the crankshaft, and the oil passage penetrates the eccentric shaft section. The crankshaft as described above, A movable scroll provided with a mounting portion, and a scroll compressor including the same, The scroll compressor further includes an eccentric slider for a crankshaft according to any one of claims 1 to 6, the eccentric shaft section is inserted into the assembly hole, and the slider body is mounted between the mounting portion and the eccentric shaft section. A scroll compressor characterized by that.

8. The scroll compressor further includes a movable scroll bearing, the movable scroll bearing is fixedly mounted in the mounting portion, the slider body is inserted and installed in the bearing hole of the movable scroll bearing, and the outer peripheral wall of the slider body is in clearance fit with the hole wall of the bearing hole of the movable scroll bearing. The scroll compressor according to claim 7, characterized in that.

9. The size range of the gap between the outer wall of the eccentric slider and the hole wall of the bearing hole of the movable scroll bearing is 0.1 mm to 0.6 mm. The scroll compressor according to claim 8, characterized in that.

10. The size range of the gap between the wall surface of the cavity portion and the hole wall of the bearing hole of the corresponding movable scroll bearing is 0.2 mm to 0.6 mm, The size of the gap between the wall surface of the cavity portion and the hole wall of the bearing hole of the corresponding movable scroll bearing is larger than the size of the gap between the outer wall of the eccentric slider and the hole wall of the bearing hole of the movable scroll bearing. The scroll compressor according to claim 9, characterized in that.

11. A temperature control facility characterized by including the scroll compressor according to claim 7.

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