Shafting assembly, scroll compressor and refrigeration equipment

Abstract

The utility model discloses a shafting assembly, a scroll compressor and refrigeration equipment, and relates to the technical field of compressors. Wherein the shaft system assembly comprises a crankshaft and an eccentric sleeve, the crankshaft is provided with an eccentric shaft section, and the outer wall of the eccentric shaft section is provided with a first driving surface; the eccentric sleeve is used for being connected with the movable scroll plate, the eccentric sleeve is arranged on the periphery of the eccentric shaft section in a sleeving mode, a second driving face is arranged on the inner wall of the eccentric sleeve, and the second driving face is connected with the first driving face in an abutting fit mode; and at least one avoiding position is arranged between the first driving surface and the second driving surface, so that the stress center of the second driving surface in the axial direction deviates from the axial midpoint of the eccentric sleeve. According to the technical scheme, the sealing performance of the movable scroll plate and the static scroll plate can be improved, gas leakage in the compression cavity is reduced, and the performance stability of the compressor is improved.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to a shaft system assembly, a scroll compressor, and a refrigeration device. Background Technology

[0002] A scroll compressor includes a stationary scroll, a moving scroll, and a crankshaft. The moving scroll is assembled with the stationary scroll and can move relative to the stationary scroll. When the scroll compressor is working, the crankshaft rotates, driving the moving scroll to move, so that the refrigerant forms a continuous operation of intake, compression, and discharge within the compression chamber defined by the stationary scroll and the moving scroll, thereby realizing the process of compressor intake, compression, and exhaust.

[0003] In scroll compressors of related technologies, the stationary scroll and the moving scroll have a certain degree of flexibility in the axial direction. When the compressor is working, the stationary scroll tends to tilt, and there may be local poor sealing between it and the moving scroll, which can lead to gas leakage in the compression chamber. Utility Model Content

[0004] The main purpose of this invention is to propose a shaft system assembly that improves the sealing performance between the moving scroll plate and the stationary scroll plate, reduces gas leakage in the compression chamber, and improves the performance stability of the compressor.

[0005] To achieve the above objectives, the shaft assembly proposed in this utility model includes:

[0006] A crankshaft having an eccentric shaft section, the outer wall of which is provided with a first driving surface; and

[0007] An eccentric sleeve is used to connect with a moving scroll plate. The eccentric sleeve is sleeved around the eccentric shaft section. The inner wall of the eccentric sleeve is provided with a second driving surface, and the second driving surface abuts and engages with the first driving surface.

[0008] At least one clearance is provided between the first driving surface and the second driving surface so that the force center of the second driving surface in the axial direction is offset from the axial midpoint of the eccentric sleeve.

[0009] In one embodiment of this application, the clearance position is located near the shaft end of the eccentric sleeve.

[0010] In one embodiment of this application, the crankshaft further includes a main shaft section, and the eccentric shaft section is connected to one axial end of the main shaft section;

[0011] The clearance position is one, and the clearance position is located at the shaft end of the eccentric sleeve away from the main shaft section.

[0012] In one embodiment of this application, there are two clearance positions, which are respectively located near the two shaft ends of the eccentric sleeve.

[0013] In one embodiment of this application, the two clearance positions have different dimensions in the axial direction.

[0014] In one embodiment of this application, at least one of the first driving surface and the second driving surface is provided with a clearance notch to form a clearance position between the first driving surface and the second driving surface.

[0015] In one embodiment of this application, the second driving surface is provided with the clearance notch; the clearance notch is formed by a groove on the shaft end portion of the second driving surface near the eccentric sleeve.

[0016] In one embodiment of this application, the first driving surface is provided with the avoidance notch; the avoidance notch is formed by slotting the first driving surface near the shaft end portion of the eccentric shaft segment.

[0017] In one embodiment of this application, the longitudinal cross-sectional shape of the clearance gap is rectangular, triangular, or trapezoidal.

[0018] In one embodiment of this application, the clearance notch is located near the end of the eccentric sleeve shaft;

[0019] The clearance notch has a first end and a second end in the axial direction. The first end is close to the shaft end of the eccentric sleeve, and the second end is close to the axial midpoint of the eccentric sleeve. The opening at the first end is larger than the opening at the second end.

[0020] In one embodiment of this application, the first driving surface is a tangent formed on the outer periphery of the eccentric shaft segment, and the clearance notch includes a region extending from one lateral side of the first driving surface to the other side.

[0021] And / or, the second driving surface is a tangent formed on the inner peripheral wall of the eccentric sleeve, and the clearance notch includes a region extending from one lateral side of the second driving surface to the other side.

[0022] To achieve the above objectives, this application also provides a scroll compressor, comprising:

[0023] Mainframe rack;

[0024] Static vortex disk;

[0025] A moving scroll plate meshes with the stationary scroll plate to define a compression chamber; the end of the moving scroll plate opposite to the stationary scroll plate is provided with a hub; and...

[0026] In the aforementioned shaft assembly, the crankshaft passes through the main frame and connects to the moving scroll plate, and the eccentric sleeve is installed in the shaft hole of the hub.

[0027] To achieve the above objectives, this application also provides a refrigeration device, including the aforementioned scroll compressor.

[0028] In the shaft system assembly of this utility model, the eccentric shaft section of the crankshaft is provided with a first driving surface. An eccentric sleeve for connecting with the moving scroll is sleeved around the eccentric shaft section. The eccentric sleeve is provided with a second driving surface. The eccentric sleeve achieves driving connection with the eccentric shaft section through the abutting cooperation between the second driving surface and the first driving surface, thereby realizing the function of the crankshaft rotation driving the moving scroll to operate. By providing at least one clearance position between the first driving surface and the second driving surface, the force center of the second driving surface in the axial direction is offset from the axial midpoint of the eccentric sleeve. This allows the moving scroll to have sufficient overturning torque during operation, enabling it to tilt with the overturning of the stationary scroll, so that the moving scroll and the stationary scroll fit more closely, improving the sealing performance between the moving scroll and the stationary scroll, preventing leakage inside the compression chamber, and improving the performance stability of the compressor. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0030] Figure 1 This is a partial structural schematic diagram of an embodiment of the scroll compressor of this utility model;

[0031] Figure 2 for Figure 1 A magnified view of a section at point M;

[0032] Figure 3 This is a schematic diagram of the eccentric sleeve in an embodiment of the present utility model;

[0033] Figure 4 This is a schematic diagram of an embodiment of the present invention where an avoidance notch is provided inside the eccentric sleeve;

[0034] Figure 5 This is a schematic diagram of another embodiment of the present invention, where an avoidance notch is provided inside the eccentric sleeve.

[0035] Figure 6 This is a schematic diagram of another embodiment of the present invention when an avoidance notch is provided inside the eccentric sleeve.

[0036] Figure 7 This is a schematic diagram of an embodiment of the present invention with two clearance notches inside the eccentric sleeve;

[0037] Figure 8 This is a schematic diagram of another embodiment of the present invention with two clearance notches inside the eccentric sleeve;

[0038] Figure 9 A schematic diagram of the structure of the crankshaft with an avoidance notch in an embodiment of the present utility model;

[0039] Figure 10 A schematic diagram of an embodiment of the present invention with an avoidance notch provided in the eccentric shaft segment;

[0040] Figure 11 A schematic diagram of another embodiment of the present invention with an avoidance notch provided in the eccentric shaft segment;

[0041] Figure 12 A schematic diagram of another embodiment of this utility model with an avoidance notch provided in the eccentric shaft segment;

[0042] Figure 13 A schematic diagram of an embodiment of the present invention with two clearance notches provided for the eccentric shaft segment;

[0043] Figure 14 This is a schematic diagram of another embodiment of the present invention with two clearance notches on the eccentric shaft segment.

[0044] Explanation of icon numbers:

[0045] label name label name 100 crankshaft 310 hub 110 Eccentric shaft section 320 Moving disc bearing 111 First driving surface 400 Static vortex disk 120 Main section 500 Mainframe 200 Eccentric sleeve A Give way 201 Second driving surface A1 Avoiding gaps 300 Moving vortex disk

[0046] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0047] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0048] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0049] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0050] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0051] like Figure 1 The scroll compressor includes a main unit 500, a stationary scroll plate 400, a moving scroll plate 300, a shaft assembly, and a motor. The stationary scroll plate 400 is mounted on the main unit frame 500. The moving scroll plate 300 and the stationary scroll plate 400 cooperate to define the compression chamber. The moving scroll plate 300 is connected to the motor via the shaft assembly. When the compressor is running, the motor drives the shaft assembly to rotate, causing the moving scroll plate 300 to move relative to the stationary scroll plate 400 to achieve the function of compressing the refrigerant.

[0052] In related technologies, the axial assembly of the stationary scroll plate 400 and the main frame 500 has a certain amount of floating space. During compressor operation, the stationary scroll plate 400 is pressed against the moving scroll plate 300 under the pressure of the back pressure chamber. However, with pressure fluctuations, the pressure at different radial positions of the stationary scroll plate 400 may vary, causing the stationary scroll plate 400 to tilt and dynamically overturn during operation. This can lead to poor sealing between the tooth tips of the stationary scroll plate and the end face of the moving scroll plate, as well as poor sealing on the sidewalls of the scroll teeth, resulting in intermittent leakage of the pump body.

[0053] Based on this, such as Figures 1 to 3 as well as Figure 9As shown, this utility model proposes a shaft system assembly, including a crankshaft 100 and an eccentric sleeve 200. The crankshaft 100 has an eccentric shaft section 110, and the outer wall of the eccentric shaft section 110 is provided with a first driving surface 111. The eccentric sleeve 200 is used to connect with a moving scroll plate 300. The eccentric sleeve 200 is sleeved on the periphery of the eccentric shaft section 110. The inner wall of the eccentric sleeve 200 is provided with a second driving surface 201, and the second driving surface 201 is in abutting and cooperating connection with the first driving surface 111. At least one clearance position A is provided between the first driving surface 111 and the second driving surface 201 so that the force center of the second driving surface 201 in the axial direction is offset from the axial midpoint of the eccentric sleeve 200.

[0054] Understandably, the crankshaft 100 also includes a main shaft section 120 connected to a motor. An eccentric shaft section 110 is connected to the end face of the main shaft section 120 and is eccentrically positioned with respect to the central shaft of the main shaft section 120. When the motor drives the main shaft section 120 to rotate, it can drive the eccentric shaft section 110 to move eccentrically. An eccentric sleeve 200 is sleeved around the eccentric shaft section 110 and drivenly connected to it. Specifically, the outer wall of the eccentric shaft section 110 is provided with a first driving surface 111, and the inner wall of the eccentric sleeve 200 is provided with a second driving surface 201. The second driving surface 201 abuts against the first driving surface 111. When the eccentric shaft section 110 rotates, it can drive the second driving surface 201 through the first driving surface 111 to drive the eccentric sleeve 200 to move eccentrically together, thereby driving the moving scroll plate 300 to move relative to the stationary scroll plate 400. Optionally, the first driving surface 111 and the second driving surface 201 can be curved surfaces or straight surfaces.

[0055] By setting at least one clearance position A between the first driving surface 111 and the second driving surface 201, the center of force of the first driving surface 111 and the second driving surface 201 in the axial direction is offset in the axial direction, so that the center of force of the second driving surface 201 in the axial direction is offset from the axial midpoint of the eccentric sleeve 200. This allows the eccentric sleeve 200 to have sufficient overturning torque during operation, so that the moving scroll plate 300 can tilt with the overturning of the stationary scroll plate 400 during operation, making the moving scroll plate 300 and the stationary scroll plate 400 fit more closely, ensuring the sealing of the moving scroll plate 300 and the stationary scroll plate 400, and reducing gas leakage in the compression chamber.

[0056] It should be noted that the clearance position A in this embodiment serves to change the position of the force between the first driving surface 111 and the second driving surface 201. The center of the force between the two is offset relative to the axial midpoint of the eccentric sleeve 200, so that the moving scroll plate 300 can tilt as the stationary scroll plate 400 tilts during operation. It can be understood that the clearance position A is equivalent to the clearance space between the first driving surface 111 and the second driving surface 201, and the parts of the first driving surface 111 and the second driving surface 201 located at the clearance position A do not contact each other. In practical applications, the clearance position A is not limited to a specific structure or a specific position. Optionally, the clearance position A can be formed by providing a notch on the first driving surface 111 and / or the second driving surface 201, or it can be a hole structure or some other structure on the first driving surface 111 and / or the second driving surface 201. Optionally, the clearance position A can be located near the axial end between the first driving surface 111 and the second driving surface 201, or it can be located near the middle, etc. Optionally, the number of clearance positions A can be one, two, or more.

[0057] The force center of the second driving surface 201 in the axial direction is offset from the axial midpoint of the eccentric sleeve 200. It can be understood that the wall surface of the second driving surface 201, except for the clearance position A, abuts against the first driving surface 111. In practical applications, the wall surface of the second driving surface 201, except for the clearance position A, can be defined as the mating surface. Then, the axial midpoint of the mating surface does not coincide with the axial midpoint of the eccentric sleeve 200, which means that the force center of the second driving surface 201 in the axial direction is offset from the axial midpoint of the eccentric sleeve 200.

[0058] In summary, in the shaft system assembly of this utility model, the eccentric shaft section 110 of the crankshaft 100 is provided with a first driving surface 111. An eccentric sleeve 200 for connecting with the moving scroll 400 is sleeved on the periphery of the eccentric shaft section 110. The eccentric sleeve 200 is provided with a second driving surface 201. The eccentric sleeve 200 achieves a driving connection with the eccentric shaft section 110 through the abutting cooperation between the second driving surface 201 and the first driving surface 111, thereby realizing the function that the rotation of the crankshaft 100 can drive the moving scroll 300 to operate. By setting at least one clearance position A between the first driving surface 111 and the second driving surface 201, the force center of the second driving surface 201 in the axial direction is offset from the axial midpoint of the eccentric sleeve 200. This allows the moving scroll 300 to have sufficient overturning torque during operation, enabling it to tilt as the stationary scroll 400 overturns, thus making the moving scroll 300 and the stationary scroll 400 fit more closely together. This improves the sealing performance of the moving scroll 300 and the stationary scroll 400, prevents leakage inside the compression chamber, and enhances the performance stability of the compressor.

[0059] In one embodiment of this application, as Figures 1 to 3 as well as Figure 9The clearance position A is located near the shaft end of the eccentric sleeve 200.

[0060] In this embodiment, by placing the clearance position A near the shaft end of the eccentric sleeve 200, the center of force of the second driving surface 201 and the first driving surface 111 in the axial direction can be shifted more towards one end of the axial direction, which increases the overturning moment of the moving scroll plate 300, so that the moving scroll plate 300 can fit more closely to the stationary scroll plate 400 during operation, thereby improving the sealing performance of both.

[0061] Understandably, the number of clearance positions A can be determined according to the actual situation, and their positions can also be different when the number of clearance positions A is different.

[0062] Optionally, such as Figures 1 to 6 as well as Figures 9 to 11 There is one clearance position A, which is located at the shaft end of the eccentric sleeve 200 away from the main shaft section 120.

[0063] This embodiment is illustrated using a clearance position A as an example. By positioning the clearance position A at the shaft end of the eccentric sleeve 200 away from the main shaft section 120, the center of force of the second driving surface 201 and the first driving surface 111 is shifted toward the main shaft section 120. As a result, the center of force of the eccentric sleeve 200 in the axial direction is shifted away from the moving scroll plate 300, increasing the distance between the center of force of the eccentric sleeve 200 and its upper end face. This makes it easier for the moving scroll plate 300 to tilt with the overturning of the stationary scroll plate 400 during operation, ensuring the sealing performance between the moving scroll plate 300 and the stationary scroll plate 400.

[0064] Optionally, such as Figure 7 , Figure 8 , Figure 13 as well as Figure 14 There are two clearance positions A, which are located on the eccentric sleeve 200 near the two shaft ends.

[0065] This embodiment is illustrated using two clearance positions A as an example. The two clearance positions A are respectively set at both ends of the eccentric sleeve 200 in the axial direction, so that the abutting parts of the second driving surface 201 and the first driving surface 111 are located in the middle of the eccentric sleeve 200 in the axial direction. On the one hand, this can ensure that the moving scroll 300 has sufficient overturning torque, and on the other hand, it can prevent the force-bearing parts of the second driving surface 201 and the first driving surface 111 from being offset too much, which would cause the moving scroll 300 to move during operation, thus ensuring the operational reliability of the moving scroll 300.

[0066] Specifically, the two clearance positions A have different axial dimensions. Understandably, the two clearance positions A have different axial heights. This arrangement ensures that the force centers of the second driving surface 201 and the first driving surface 111 are offset from the axial midpoint of the eccentric sleeve 200, so that the moving scroll plate 300 has sufficient overturning torque when it operates, thereby improving the sealing performance between the moving scroll plate 300 and the stationary scroll plate 400.

[0067] As an example, the height dimension of the clearance position A located away from the main shaft section 120 is greater than the height dimension of the clearance position A located close to the main shaft section 120. This allows the center of force of the second driving surface 201 and the first driving surface 111 to shift towards the main shaft section 120, increasing the distance between the center of force of the eccentric sleeve 200 and its upper end face. This makes it easier for the moving scroll plate 300 to tilt during operation as the stationary scroll plate 400 overturns, improving the sealing performance between the moving scroll plate 300 and the stationary scroll plate 400.

[0068] In one embodiment of this application, as Figures 1 to 3 as well as Figure 9 At least one of the first driving surface 111 and the second driving surface 201 is provided with a clearance notch A1 to form a clearance position A between the first driving surface 111 and the second driving surface 201.

[0069] This embodiment illustrates the structure for forming the clearance position A. By providing a clearance notch A1 on at least one of the first driving surface 111 and the second driving surface 201, the clearance position A is formed using the clearance notch A1 between the two surfaces. This design simplifies the molding process and improves production efficiency.

[0070] It is understandable that the clearance notch A1 may be provided only on the first driving surface 111, or only on the second driving surface 201, or both the first driving surface 111 and the second driving surface 201 may be provided with clearance notches A1.

[0071] As an example, such as Figures 9 to 14 Only the first driving surface 111 is provided with a clearance notch A1. The part of the first driving surface 111 at the clearance notch A1 is spaced apart from the second driving surface 201. The wall surface of the first driving surface 111 except for the clearance notch A1 abuts against the second driving surface 201.

[0072] Optionally, the clearance notch A1 is formed by slotting the first driving surface 111 near the shaft end of the eccentric shaft segment 110, that is, the clearance notch A1 is located at the corner where the first driving surface 111 connects to the shaft end face of the eccentric shaft segment 110. It is understood that the structural shape of the clearance notch A1 can be adjusted according to changes in its longitudinal cross-sectional shape. For example, it can be a groove structure with a rectangular longitudinal cross-sectional shape, in which case the clearance notch A1 is a stepped groove structure, such as... Figure 9 , Figure 10 Alternatively, it can be a groove structure with a triangular longitudinal cross-section. In this case, the clearance notch A1 can be formed by chamfering the edge of the first driving surface 111 near the axial end face, such as... Figure 11 and Figure 14 Alternatively, it can be a groove structure with a trapezoidal longitudinal cross-section. In this case, the clearance notch A1 can be formed by machining the edge of the first driving surface 111 near the axial end face, such as... Figure 12 Optionally, one or two clearance notches A1 may be provided on the first driving surface 111.

[0073] As an example, such as Figures 1 to 7 Only the second driving surface 201 is provided with a clearance notch A1. The part of the second driving surface 201 at the clearance notch A1 is spaced apart from the first driving surface 111. The wall surface of the second driving surface 201 except for the clearance notch A1 abuts against the first driving surface 111.

[0074] Optionally, the clearance notch A1 is formed by slotting the second driving surface 201 near the shaft end of the eccentric sleeve 200. That is, the clearance notch A1 is located at the corner where the second driving surface 201 connects to the shaft end face of the eccentric sleeve 200. It is understandable that the structural shape of the clearance notch A1 can be adjusted according to changes in its longitudinal cross-sectional shape. For example, it can be a groove structure with a rectangular longitudinal cross-sectional shape, in which case the clearance notch A1 is a stepped groove structure, such as... Figure 3 and Figure 4 Alternatively, it can be a groove structure with a triangular longitudinal cross-section. In this case, the clearance notch A1 can be formed by chamfering the edge of the second driving surface 201 near the axial end face, such as... Figure 5 and Figure 8 Alternatively, it can be a groove structure with a trapezoidal longitudinal cross-section. In this case, the clearance notch A1 can be formed by machining the edge of the second driving surface 201 near the axial end face, such as... Figure 6 Optionally, one or two clearance notches A1 may be provided on the second drive surface 201.

[0075] As an example, both the first drive surface 111 and the second drive surface 201 are provided with clearance notches A1. Optionally, the clearance notches A1 on the two drive surfaces can be arranged relative to each other or staggered. Optionally, the number of clearance notches A1 on the two drive surfaces can be the same or different.

[0076] In some embodiments, such as Figure 5 and Figure 6 The clearance notch A1 has a first end and a second end in the axial direction. The first end is close to the shaft end of the eccentric sleeve 200, and the second end is close to the axial midpoint of the eccentric sleeve 200. The opening at the first end is larger than the opening at the second end.

[0077] In this embodiment, the clearance notch A1 has a first end with a larger opening and a second end with a smaller opening. By setting the first end with a larger opening close to the shaft end of the eccentric sleeve 200 and the second end with a smaller opening close to the axial midpoint of the eccentric sleeve 200, the gap between the second driving surface 201 and the first driving surface 111 at the first end is greater than the gap at the second end. This better matches the tilting trend of the eccentric sleeve 200, making it easier for the moving scroll plate 300 to tilt with the overturning of the stationary scroll plate 400 during operation, thus improving the sealing performance between the moving scroll plate 300 and the stationary scroll plate 400.

[0078] In one embodiment of this application, as Figure 9 The first driving surface 111 is a tangent formed on the outer periphery of the eccentric shaft segment 110, and the clearance notch A1 includes a region extending from one side of the first driving surface 111 to the other side.

[0079] In one embodiment of this application, as Figure 3 The second driving surface 201 is a cut edge formed on the inner peripheral wall of the eccentric sleeve 200, and the clearance notch A1 includes a region extending from one side of the second driving surface 201 to the other side.

[0080] Understandably, the first driving surface 111 is a straight surface extending along the axial direction of the eccentric shaft segment 110. The second driving surface 201 is a straight surface extending along the axial direction of the eccentric sleeve 200. Through the abutting action of the straight surfaces, compared with the method of curved surface to curved surface, relative movement can be avoided during normal operation, effectively ensuring the power transmission between the eccentric shaft segment 110 and the eccentric sleeve 200 and reducing power loss.

[0081] Optionally, the first driving surface 111 is provided with a clearance notch A1, which includes a region extending from one side of the first driving surface 111 to the other side, such that the clearance notch A1 spans at least the lateral dimension of the first driving surface 111. This can improve the uniformity of force on the first driving surface 111 and the second driving surface 201 in the lateral direction, and make the contact parts of the first driving surface 111 and the second driving surface 201 approximately at the same axial height. This is more conducive to controlling the midpoint of the axial force between the second driving surface 201 and the first driving surface 111, thereby improving the control of the overturning degree of the moving scroll plate 300. While ensuring the sealing of the moving scroll plate 300 and the stationary scroll plate 400, it can also prevent excessive wear between the two.

[0082] Optionally, the second drive surface 201 is provided with a clearance notch A1, which includes a region extending from one side of the second drive surface 201 to the other side, such that the clearance notch A1 at least spans the lateral dimension of the second drive surface 201. This can improve the uniformity of force on the first drive surface 111 and the second drive surface 201 in the lateral direction, and make the contact parts of the first drive surface 111 and the second drive surface 201 approximately at the same axial height. This is more conducive to controlling the midpoint of the axial force between the second drive surface 201 and the first drive surface 111, thereby improving the control of the overturning degree of the moving scroll plate 300. While ensuring the sealing of the moving scroll plate 300 and the stationary scroll plate 400, it can also prevent excessive wear between the two.

[0083] This utility model also proposes a scroll compressor, such as Figure 1 and Figure 2 The scroll compressor includes a main frame 500, a stationary scroll plate 400, a moving scroll plate 300, and a shaft system assembly. The specific structure of the shaft system assembly is as described in the above embodiments. Since this scroll compressor adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. Among them, the moving scroll plate 300 meshes with the stationary scroll plate 400 to define the compression chamber; a hub 310 is provided at the end of the moving scroll plate 300 away from the stationary scroll plate 400; the crankshaft 100 passes through the main frame 500 and is connected to the moving scroll plate 300, and the eccentric sleeve 200 is installed in the shaft hole of the hub 310.

[0084] Optionally, the moving scroll 300 is meshed with the stationary scroll 400, and the hub 310 of the moving scroll 300 is sleeved on the outside of the eccentric sleeve 200 and drivenly connected to the eccentric sleeve 200. When the compressor is running, the crankshaft 100 rotates, driving the eccentric shaft section 110 to rotate, and transmitting power to the hub 310 through the eccentric sleeve 200, thereby driving the moving scroll 300 to rotate relative to the stationary scroll 400. Optionally, a moving plate bearing 320 is provided between the eccentric sleeve 200 and the hub 310, and the moving plate bearing 320 is interference-fitted into the shaft hole of the hub 310.

[0085] This utility model also proposes a refrigeration device, which includes a scroll compressor. The specific structure of the scroll compressor is as described in the above embodiments. Since this refrigeration device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0086] Optionally, refrigeration equipment includes air conditioners, refrigerators, or refrigerated transport vehicles, etc.

[0087] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A shaft system assembly, characterized in that, include: A crankshaft having an eccentric shaft section, the outer wall of which is provided with a first driving surface; and An eccentric sleeve is used to connect with a moving scroll plate. The eccentric sleeve is sleeved around the eccentric shaft section. The inner wall of the eccentric sleeve is provided with a second driving surface, and the second driving surface abuts and engages with the first driving surface. At least one clearance is provided between the first driving surface and the second driving surface so that the force center of the second driving surface in the axial direction is offset from the axial midpoint of the eccentric sleeve.

2. The shaft assembly as claimed in claim 1, characterized in that, The clearance position is located near the shaft end of the eccentric sleeve.

3. The shaft assembly as described in claim 2, characterized in that, The crankshaft also includes a main shaft section, and the eccentric shaft section is connected to one axial end of the main shaft section; The clearance position is one, and the clearance position is located at the shaft end of the eccentric sleeve away from the main shaft section.

4. The shaft assembly as described in claim 2, characterized in that, There are two clearance positions, which are located near the two shaft ends of the eccentric sleeve.

5. The shaft assembly as claimed in claim 4, characterized in that, The two clearance positions have different dimensions in the axial direction.

6. The shaft assembly as described in any one of claims 1 to 5, characterized in that, At least one of the first driving surface and the second driving surface is provided with a clearance notch to form a clearance position between the first driving surface and the second driving surface.

7. The shaft assembly as claimed in claim 6, characterized in that, The second driving surface is provided with the clearance notch; the clearance notch is formed by a groove at the shaft end of the second driving surface near the eccentric sleeve.

8. The shaft assembly as claimed in claim 6, characterized in that, The first driving surface is provided with the avoidance notch; the avoidance notch is formed by a groove at the shaft end of the first driving surface near the eccentric shaft segment.

9. The shaft assembly as claimed in claim 6, characterized in that, The longitudinal cross-sectional shape of the clearance gap is rectangular, triangular, or trapezoidal.

10. The shaft assembly as claimed in claim 6, characterized in that, The clearance notch is located near the end of the eccentric sleeve shaft; The clearance notch has a first end and a second end in the axial direction. The first end is close to the shaft end of the eccentric sleeve, and the second end is close to the axial midpoint of the eccentric sleeve. The opening at the first end is larger than the opening at the second end.

11. The shaft assembly as claimed in claim 6, characterized in that, The first driving surface is a tangent formed on the outer periphery of the eccentric shaft segment, and the clearance notch includes a region extending from one side of the first driving surface to the other side. And / or, the second driving surface is a tangent formed on the inner peripheral wall of the eccentric sleeve, and the clearance notch includes a region extending from one lateral side of the second driving surface to the other side.

12. A scroll compressor, characterized in that, include: Mainframe rack; Static vortex disk; A moving scroll plate meshes with the stationary scroll plate to define a compression chamber; The moving scroll plate has a hub at one end opposite to the stationary scroll plate; as well as The shaft assembly as described in any one of claims 1 to 11, wherein the crankshaft passes through the main frame and is connected to the moving scroll plate, and the eccentric sleeve is installed in the shaft hole of the hub.

13. A refrigeration device, characterized in that, Including the scroll compressor as described in claim 12.

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