Counterweight balance block mechanism, orbiting scroll drive device and scroll compressor
By designing a counterweight balance block mechanism in the scroll compressor, the eccentric sleeve transmits torque and simplifies the structure, the problems of anti-rotation pin loosening and vibration increase are solved, and a more stable and low-noise operation effect is achieved.
Patent Information
- Application Number
- CN202421619772.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-09
AI Technical Summary
During the operation of existing scroll compressors, the anti-rotation pins are easily loosened due to changes in support force and increase vibration, resulting in poor noise reduction effect.
A counterweight balance block mechanism is designed. Through the coordination of the balance block body and the eccentric sleeve, the eccentric sleeve is used to transmit torque, simplify the structure, reduce the difficulty of processing, and avoid the support force of the anti-rotating pin and prevent loosening through the design of the transmission groove.
It effectively avoids the risk of anti-rotation pin loose due to alternating external forces, reduces the vibration and noise of the compressor, and improves the stability and noise reduction effect of the whole machine.
Smart Images
Figure CN222835929U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of compressors, and in particular to a counterweight balancing block mechanism, a movable scroll drive device and a scroll compressor. Background Art
[0002] At present, during the operation of the scroll compressor, the rotor component rotates under the action of electromagnetic force, and can drive the motor shaft, positioning pins, counterweight balance block and movable scroll component to rotate in turn. Under the restriction of multiple anti-rotation pins, the movable scroll component finally makes a circular translation around the center of the motor shaft. The volume of the closed working chamber formed by the meshing of the movable scroll component and the fixed scroll assembly becomes smaller, and the refrigerant in the closed working chamber is compressed, thereby realizing the function of compressing the refrigerant.
[0003] The inventor has found that the scroll compressor in the prior art has at least the following disadvantages:
[0004] During the operation of the scroll compressor, each anti-rotation pin will be subjected to a supporting force, and the magnitude and direction of each supporting force will change periodically with the change of the driving force direction. Under the action of this force, the anti-rotation pin is in danger of loosening; and for the scroll compressor as a whole, the supporting force on the anti-rotation pin is an exciting force, which will increase the vibration of the compressor and make the noise reduction effect of the compressor poor. Utility Model Content
[0005] The purpose of the utility model is to provide a counterweight balancing block mechanism, a movable scroll drive device and a scroll compressor, which can effectively improve the situation where the anti-rotation pin is loose, and can also effectively reduce the vibration generated during the operation of the compressor, thereby reducing the noise generated during the operation.
[0006] The embodiment of the utility model is achieved as follows:
[0007] In a first aspect, the utility model provides a counterweight balancing block mechanism, comprising:
[0008] A balancing block body and an eccentric sleeve, wherein a fixing groove for assembling a motor shaft is provided on one side of the balancing block body, a positioning through hole for penetrating a positioning pin is provided on the bottom wall of the fixing groove, and a transmission groove is provided on the other side of the balancing block body, one end of the positioning through hole is located on the bottom wall of the transmission groove; an installation through hole is provided on the eccentric sleeve, the eccentric sleeve is inserted into the transmission groove, and the installation through hole is connected to the positioning through hole; the outer peripheral surface of the eccentric sleeve includes a first mating surface and a second mating surface arranged in the circumferential direction of the outer peripheral surface, the first mating surface and the peripheral wall of the transmission groove have a spacing to form a chip removal space, and the second mating surface is in contact with the peripheral wall of the transmission groove.
[0009] In an optional embodiment, the transmission groove is provided with a notch, and the chip removal space is connected to the notch.
[0010] Based on the above solution, by setting the transmission groove as a notch, the consumables of the balancing block body can be reduced, the processing and manufacturing costs can be reduced, and the volume of the balancing block body can be reduced, which is also convenient for assembling the balancing block body in a limited space. At the same time, during the operation of the compressor, impurities are easily discharged from the chip removal space and the notch, reducing the failure rate.
[0011] In an optional embodiment, the eccentric sleeve includes a cylinder and an annular limit boss, the mounting through hole is provided on the cylinder, and the axis of the mounting through hole extends in the axial direction of the cylinder; the annular limit boss is sleeved on the outside of the cylinder; the first mating surface and the second mating surface are both provided on the outer peripheral surface of the annular limit boss.
[0012] Based on the above scheme, when the eccentric sleeve is assembled into the transmission groove, the outer peripheral surface of the annular limiting boss of the eccentric sleeve contacts part of the groove peripheral wall of the transmission groove to achieve limiting. At the same time, the main body is used to cooperate with the inner ring of the assembly bearing for positioning the movable scroll body. When the inner ring is sleeved outside the column, the annular end face of the inner ring away from the movable scroll body can abut against the annular end face of the annular limiting boss close to the movable scroll body, thereby limiting the freedom of the eccentric sleeve to move toward the movable scroll body, avoiding friction between the eccentric sleeve and the movable scroll body, reducing operating losses, and extending the operating life. At the same time, the outer diameter of the column is smaller than the outer diameter of the annular limiting boss, which can reduce the materials required for the processing of the eccentric sleeve and reduce the processing and manufacturing costs.
[0013] In an optional embodiment, the annular limiting boss is protruding from the end surface of the transmission groove where the notch is located.
[0014] Based on the above scheme, when the inner ring of the assembled bearing is sleeved on the column, the inner ring of the assembled bearing can abut against the annular limit boss instead of directly abutting against the bottom wall of the transmission groove, thereby avoiding interference between the balance block body and the assembled bearing, reducing the probability of wear of the balance block body, and extending the service life of components.
[0015] In an optional embodiment, the mounting through hole includes a first hole segment and a second hole segment connected, the aperture of the first hole segment is larger than the aperture of the second hole segment, and the first hole segment is located on a side of the second hole segment close to the bottom wall of the transmission groove.
[0016] Based on the above scheme, after the eccentric sleeve is installed in the transmission groove, the first hole section is arranged close to the bottom wall of the transmission groove. In this way, the center of mass of the eccentric sleeve can be offset to the side of the movable scroll body, so that the distance between the center of mass of the eccentric sleeve and the center of mass of the assembled bearing is small, thereby improving the stability during operation.
[0017] In an optional embodiment, the groove circumferential wall of the transmission groove includes a connected arc surface and a butt surface, and the butt surface protrudes from the arc surface toward the middle position of the transmission groove; the first mating surface and the arc surface are spaced apart, and the second mating surface is in contact with the butt surface.
[0018] Based on the above solution, the eccentric sleeve and the transmission groove have a good matching effect, and the assembly is convenient and quick.
[0019] In a second aspect, the utility model provides a movable scroll drive device, the movable scroll drive device comprising:
[0020] The counterweight balancing mass mechanism according to any one of the aforementioned embodiments.
[0021] In an optional embodiment, the movable scroll drive device also includes a motor shaft and a positioning pin, the motor shaft is provided with an assembly hole, the positioning pin is inserted into the assembly hole and is eccentrically arranged with respect to the assembly hole; the positioning pin is simultaneously penetrated through the positioning through hole and the installation through hole.
[0022] Based on the above solution, the balancing block body is sleeved on the outside of the motor shaft through the fixing groove, and the locating pin is inserted into the locating through hole on the balancing block body, so as to realize the positioning of the balancing block body and the motor shaft, and the assembly is convenient.
[0023] In an optional embodiment, the movable scroll driving device further comprises an assembled bearing, the inner ring of the assembled bearing is sleeved on the outside of the eccentric sleeve, and the outer ring of the assembled bearing is used for fixed connection with the movable scroll body.
[0024] Based on the above solution, the movable scroll body can make circular translational motion around the axis of the motor shaft more flexibly.
[0025] In a third aspect, the utility model provides a scroll compressor, the scroll compressor comprising:
[0026] The movable scroll drive device according to any one of the aforementioned embodiments.
[0027] The beneficial effects of the embodiments of the utility model are:
[0028] In summary, the counterweight balancing block mechanism provided in this embodiment is used in conjunction with the balancing block body and the eccentric sleeve, and the eccentric sleeve is used to transmit the torque to the movable scroll body, thereby simplifying the structure of the balancing block body, reducing the difficulty of processing and manufacturing, and reducing the processing and manufacturing cost. At the same time, the eccentric sleeve cooperates with the force transmission groove on the balancing block body, and the first matching surface on the eccentric sleeve and the groove wall of the transmission groove have a spacing to form a chip removal space, and the second matching surface of the eccentric sleeve contacts the groove wall of the transmission groove to achieve position limiting. Such a design changes the transmission path of the scroll compressor assembly, so that during the steady-state operation of the scroll compressor assembly, there is no supporting force between the movable scroll body and the anti-rotation pin. Therefore, the improved transmission structure can effectively avoid the problem of the danger of the anti-rotation pin loosening due to alternating external forces. For the compressor as a whole, since there is no exciting force, the vibration and noise effects of the compressor can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0030] Figure 1 It is a structural schematic diagram of a scroll compressor assembly in the prior art;
[0031] Figure 2 for Figure 1 Schematic cross-sectional view of AA in the figure;
[0032] Figure 3 It is a force analysis diagram of a scroll compressor assembly in the prior art;
[0033] Figure 4 It is a schematic diagram of a counterweight balancing block mechanism according to an embodiment of the utility model;
[0034] Figure 5 A cross-sectional view of a counterweight balancing block mechanism according to an embodiment of the utility model;
[0035] Figure 6 for Figure 5 A local enlarged schematic diagram in FIG.
[0036] Figure 7 A schematic diagram of a balancing weight body from one perspective of an embodiment of the utility model;
[0037] Figure 8 A schematic diagram of a balancing weight body from another perspective of an embodiment of the utility model;
[0038] Fig. 9A schematic diagram of an eccentric sleeve according to an embodiment of the utility model;
[0039] Fig.10 It is a cross-sectional schematic diagram of an eccentric sleeve of an embodiment of the utility model;
[0040] Fig.11 A schematic diagram of a movable scroll drive device according to an embodiment of the utility model;
[0041] Fig.12 It is a schematic cross-sectional view of a movable scroll driving device according to an embodiment of the present utility model.
[0042] icon:
[0043] 001-orbiting scroll component; 002-counterweight balance block; 003-rotor component; 004-motor shaft component; 041-motor main shaft; 042-eccentric pin; 005-first bearing; 006-second bearing; 007-anti-rotation pin; 008-first gap; 009-second gap;
[0044] 100-balance block body; 101-fixing groove; 102-positioning through hole; 103-transmission groove; 1031-arc surface; 1032-abutment surface; 104-notch; 200-eccentric sleeve; 201-mounting through hole; 2011-first hole section; 2012-second hole section; 202-chip removal space; 210-first mating surface; 220-second mating surface; 230-column; 240-annular limiting boss; 300-motor shaft; 400-positioning pin; 500-assembly bearing; 600-moving scroll body. DETAILED DESCRIPTION
[0045] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0046] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0047] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0048] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0049] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0050] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0051] Please combine Figure 1 and Figure 2In the prior art, the transmission structure of the scroll compressor includes a movable scroll component 001, a counterweight balancing block 002, a rotor component 003, a motor shaft component 004, a first bearing 005, a second bearing 006, and a plurality of anti-rotation pins 007 and other parts; wherein the motor shaft component 004 is mainly composed of a motor main shaft 041 and an eccentric pin 042. The counterweight balancing block 002 is provided with an arc surface, and there is a first gap 008 between one side of the arc surface and the outer cylindrical surface of the motor main shaft 041, and there is a second gap 009 between the other side and the outer cylindrical surface of the motor main shaft 041. Among the above parts, except for the anti-rotation pin 007, the first bearing 005 and the second bearing 006 which are fixed in the compressor and are stationary, the other parts will move relative to each other. During the operation of the scroll compressor, the rotor component 003 rotates under the action of electromagnetic force, and drives the motor main shaft 041, the eccentric pin 042, the counterweight 002 and the movable scroll component 001 to rotate in turn; the movable scroll component 001, under the restriction of multiple anti-rotation pins 007, finally makes a circumferential translation around the axis of the motor main shaft 041, and the counterweight 002 is stabilized at a position with a first gap 008 and a second gap 009 with the motor main shaft 041. The volume of the closed working chamber formed by the meshing of the profile between the movable scroll component 001 and the fixed scroll assembly becomes smaller, and the refrigerant in the closed working chamber is compressed, thereby realizing the function of compressing the refrigerant.
[0052] Please combine Figure 3 Furthermore, in order to analyze the force during the movement, the number of anti-rotation pins 007 is six as an example, and it is assumed that during the steady-state operation of the compressor, the driving force on the movable scroll organization is F, and the point of action is the center point O3 of the movable scroll. This force can be decomposed into a horizontal force Ft and a vertical force Fr; the resultant force of the horizontal force Ft and the refrigerant force Ft on the movable scroll component 001 in the horizontal direction is zero, and the vertical force Fr and the refrigerant force Fr on the movable scroll in the vertical direction are zero. 气 , the sum of the supporting forces of the six anti-rotation pins 007 (i.e. the sum of Fn1, Fn2, Fn3, Fn4, Fn5 and Fn6), the centrifugal force F of the movable scroll 离1 , the centrifugal force F of the counterweight 002 离2 The net force is zero, that is, Fr = Fr 气 +Fn1+Fn2+Fn3+Fn4+Fn5+Fn6+F 离1 +F 离2 , where Fr is the driving force, Fr 气 , Fn1, Fn2, Fn3, Fn4, Fn5, Fn6, F 离1 and F 离2 All are load.
[0053] Therefore, in order to balance the vertical component Fr of the driving force F borne by the movable scroll member 001, the six anti-rotation pins 007 of the scroll compressor assembly in the prior art bear supporting forces Fn1, Fn2, Fn3, Fn4, Fn5 and Fn6 respectively, and the magnitude and direction of the supporting force of each anti-rotation pin 007 will change periodically with the change of the driving force direction. Under the action of this external force, the anti-rotation pin 007 is in danger of loosening; the periodically changing supporting forces Fn1, Fn2, Fn3, Fn4, Fn5 and Fn6 borne by the anti-rotation pin 007 are exciting forces for the entire compressor, which will cause the vibration and noise effects of the compressor to deteriorate.
[0054] In view of this, the designer provides a counterweight balancing block mechanism, which can improve the support force of the anti-rotation pin, making the anti-rotation pin difficult to loosen, and at the same time improve the noise reduction effect of the whole machine.
[0055] Please combine Figure 4-Figure 10 In this embodiment, the counterweight balancing block mechanism includes a balancing block body 100 and an eccentric sleeve 200. A fixing groove 101 for assembling the motor shaft 300 is provided on one side of the balancing block body 100, and a positioning through hole 102 for penetrating the positioning pin 400 is provided on the bottom wall of the fixing groove 101. A transmission groove 103 is provided on the other side of the balancing block body 100, and one end of the positioning through hole 102 is located on the bottom wall of the transmission groove 103. An installation through hole 201 is provided on the eccentric sleeve 200, and the eccentric sleeve 200 is inserted into the transmission groove 103, and the installation through hole 201 is connected to the positioning through hole 102. The outer peripheral surface of the eccentric sleeve 200 includes a first mating surface 210 and a second mating surface 220 arranged in the circumferential direction of the outer peripheral surface, and the first mating surface 210 and the groove peripheral wall of the transmission groove 103 have a spacing to form a chip removal space 202, and the second mating surface 220 contacts the groove peripheral wall of the transmission groove 103.
[0056] Based on the above, the working method of the counterweight balancing block mechanism provided in this embodiment is as follows:
[0057] By using the balancing block body 100 and the eccentric sleeve 200 in combination, the eccentric sleeve 200 is used to transmit the torque to the movable scroll body 600, simplifying the structure of the balancing block body 100, reducing the difficulty of processing and manufacturing, and reducing the processing and manufacturing cost. At the same time, the eccentric sleeve 200 cooperates with the force transmission groove on the balancing block body 100, and the first matching surface 210 on the eccentric sleeve 200 and the groove wall of the transmission groove 103 have a spacing to form a chip removal space 202, and the second matching surface 220 of the eccentric sleeve 200 contacts the groove wall of the transmission groove 103 to achieve position limiting. Such a design changes the transmission path of the scroll compressor assembly, so that during the steady-state operation of the scroll compressor assembly, there is no supporting force between the movable scroll body 600 and the anti-rotation pin. Therefore, the improved transmission structure can effectively avoid the problem of the anti-rotation pin being loose due to the alternating external force. For the compressor, the vibration and noise effects of the compressor can be effectively improved because there is no exciting force.
[0058] Specifically, when the scroll compressor is running, the balancing block body is connected to the motor shaft 300 by means of the fixing groove 101 thereon, and the two are interference fit. The positioning pin 400 on the motor shaft 300 passes through the positioning through hole 102 and is plugged into the eccentric sleeve 200, and the eccentric sleeve 200 is rotationally matched with the movable scroll body 600 through the assembly bearing 500. During the rotation of the motor shaft 300, the balancing block body and the eccentric sleeve 200 are driven to move together. The eccentric sleeve 200 transmits power to the movable scroll body 600. During the circumferential translation of the movable scroll body 600, a force is generated on the eccentric sleeve 200. The force makes the eccentric sleeve 200 tend to rotate around the axis of the positioning pin 400. Since the second mating surface 220 of the eccentric sleeve 200 is in contact with the groove wall of the balancing block body 100, the groove wall provides a supporting force, thereby balancing the force applied by the movable scroll body 600 to the eccentric sleeve 200, thereby preventing the eccentric sleeve 200 from rotating relative to the positioning pin 400. The movement of the movable scroll body 600 is limited by the eccentric sleeve. There is no supporting force between the movable scroll body 600 and the multiple anti-rotation pins, and the anti-rotation pins will not loosen due to external forces, thereby improving the reliability and stability of operation.
[0059] The following embodiments illustrate the details of the counterweight balancing block mechanism provided in the present application by way of examples.
[0060] Please combine Figure 7 and Figure 8In this embodiment, the transmission groove 103 is optionally provided with a notch 104, and the chip removal space 202 is connected to the notch 104. By setting the transmission groove 103 as the notch 104, the consumables of the balancing block body 100 can be reduced, the processing and manufacturing costs can be reduced, and the volume of the balancing block body 100 can be reduced, which is also convenient for assembling the balancing block body 100 in a limited space. At the same time, during the operation of the compressor, impurities are easily discharged from the chip removal space 202 and the notch 104, reducing the failure rate.
[0061] Further, the groove peripheral wall of the transmission groove 103 includes a connected arc surface 1031 and abutting surface 1032, the arc surface 1031 and the abutting surface 1032 are arranged adjacent to each other in the circumferential direction of the transmission groove 103, and the abutting surface 1032 protrudes the arc surface 1031 toward the middle position of the transmission groove 103, that is, the distance between the abutting surface 1032 and the center of the transmission groove 103 is smaller than the distance between the arc surface 1031 and the center of the transmission groove 103. When the eccentric sleeve 200 is inserted into the transmission groove 103, the first matching surface 210 and the arc surface 1031 have a spacing, and the second matching surface 220 contacts the abutting surface 1032. The eccentric sleeve 200 has a good matching effect with the transmission groove 103, and the assembly is convenient and quick.
[0062] Please combine Figure 9-10 In this embodiment, the mounting through hole 201 is optionally configured as a stepped hole, and the mounting through hole 201 includes a first hole section 2011 and a second hole section 2012 connected to each other, the first hole section 2011 and the second hole section 2012 are both cylindrical hole sections, the aperture of the first hole section 2011 is larger than the aperture of the second hole section 2012, and the first hole section 2011 is located on the side of the second hole section 2012 close to the groove bottom wall of the transmission groove 103. After the eccentric sleeve 200 is installed in the transmission groove 103, the first hole section 2011 is arranged close to the groove bottom wall of the transmission groove 103, so that the mass center of the eccentric sleeve 200 can be offset to the side of the movable scroll body 600, so that the distance between the mass center of the eccentric sleeve 200 and the mass center of the assembly bearing 500 is small, thereby improving the stability during operation.
[0063] In this embodiment, optionally, the eccentric sleeve 200 includes a cylinder 230 and an annular limiting boss 240, the cylinder 230 is a cylindrical structure, the mounting through hole 201 is provided on the cylinder 230, and the axis of the mounting through hole 201 extends in the axial direction of the cylinder 230. The annular limiting boss 240 is set as a circular ring structure, and the annular limiting boss 240 is sleeved outside the cylinder 230. The two can be set as an integrated structure, with high structural strength, convenient processing, low cost, and long service life. The first mating surface 210 and the second mating surface 220 are both set on the outer peripheral surface of the annular limiting boss 240, that is, the first mating surface 210 and the second mating surface 220 are both part of the cylindrical surface of the annular limiting boss 240.
[0064] It should be noted that when the eccentric sleeve 200 is assembled into the transmission groove 103, the outer peripheral surface of the annular limiting boss 240 of the eccentric sleeve 200 contacts part of the groove peripheral wall of the transmission groove 103 to achieve limiting. At the same time, the main body is used to cooperate with the inner ring of the assembly bearing 500 for positioning the movable scroll body 600. When the inner ring is sleeved outside the column 230, the annular end surface of the inner ring away from the movable scroll body 600 can abut against the annular end surface of the annular limiting boss 240 close to the movable scroll body 600, thereby limiting the freedom of the eccentric sleeve 200 to move toward the movable scroll body 600, avoiding friction between the eccentric sleeve 200 and the movable scroll body 600, reducing operating losses, and extending operating life. At the same time, the outer diameter of the column 230 is smaller than the outer diameter of the annular limiting boss 240, which can reduce the materials required for processing the eccentric sleeve 200 and reduce the processing and manufacturing costs.
[0065] Furthermore, the annular limiting boss 240 is convexly disposed on the end surface of the notch of the transmission groove 103. That is, the thickness of the annular limiting boss 240 is greater than the groove depth of the transmission groove 103. The thickness of the annular limiting boss 240 is consistent with the groove depth direction of the transmission groove 103.
[0066] With such a design, when the inner ring of the assembled bearing 500 is sleeved on the column 230, the inner ring of the assembled bearing 500 can abut against the annular limiting boss 240 instead of directly abutting against the bottom wall of the transmission groove 103, thereby avoiding interference between the balance block body 100 and the assembled bearing 500, reducing the probability of wear of the balance block body 100, and extending the service life of the components.
[0067] The counterweight balancing block mechanism provided in this embodiment, by reasonably arranging the structures of the balancing block body 100 and the eccentric sleeve 200, can enable the balancing block body 100 to provide supporting force for the eccentric sleeve 200, thereby preventing the eccentric sleeve 200 and the movable scroll body 600 from rotating relative to the positioning pin 400, so that the movable scroll body 600 will not apply external force to the anti-rotation pin, and the anti-rotation pin can operate stably and reliably and have a long service life.
[0068] Please combine Figure 11-Figure 12 This embodiment also provides a movable scroll drive device, including a counterweight balancing block mechanism, a motor shaft 300, a positioning pin 400 and an assembly bearing 500. The motor shaft 300 is provided with an assembly hole, and the positioning pin 400 is inserted into the assembly hole and eccentrically arranged with the assembly hole; the positioning pin 400 is simultaneously penetrated in the positioning through hole 102 and the installation through hole 201. The inner ring of the assembly bearing 500 is sleeved on the outside of the eccentric sleeve 200, and the outer ring of the assembly bearing 500 is used for fixed connection with the movable scroll body 600.
[0069] The movable scroll driving device provided in this embodiment has at least the advantages of stable and reliable operation and low noise.
[0070] This embodiment further provides a scroll compressor, which includes a movable scroll driving device and a movable scroll body 600 . The movable scroll body 600 is sleeved on the outer ring of the assembled bearing 500 .
[0071] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A counterweight balancing block mechanism, characterized in that: include: A balancing block body (100) and an eccentric sleeve (200), wherein one side of the balancing block body (100) is provided with a fixing groove (101) for assembling a motor shaft (300), a bottom wall of the fixing groove (101) is provided with a positioning through hole (102) for penetrating a positioning pin (400), and the other side of the balancing block body (100) is provided with a transmission groove (103), one end of the positioning through hole (102) is located on the bottom wall of the transmission groove (103); the eccentric sleeve (200) is provided with a mounting through hole (102) 201), the eccentric sleeve (200) is inserted into the transmission groove (103), and the installation through hole (201) is connected to the positioning through hole (102); the outer peripheral surface of the eccentric sleeve (200) includes a first matching surface (210) and a second matching surface (220) arranged in the circumferential direction of the outer peripheral surface, the first matching surface (210) and the groove peripheral wall of the transmission groove (103) have a spacing to form a chip removal space (202), and the second matching surface (220) is in contact with the groove peripheral wall of the transmission groove (103).
2. The counterweight balancing block mechanism according to claim 1, characterized in that: The transmission groove (103) is provided with a notch (104), and the chip removal space (202) is connected to the notch (104).
3. The counterweight balancing block mechanism according to claim 1, characterized in that: The eccentric sleeve (200) comprises a column (230) and an annular limiting boss (240); the mounting through hole (201) is arranged on the column (230), and the axis of the mounting through hole (201) extends in the axial direction of the column (230); the annular limiting boss (240) is sleeved on the outside of the column (230); the first mating surface (210) and the second mating surface (220) are both arranged on the outer peripheral surface of the annular limiting boss (240).
4. The counterweight balancing block mechanism according to claim 3, characterized in that: The annular limiting boss (240) is protrudingly arranged on the end surface where the notch of the transmission groove (103) is located.
5. The counterweight balancing block mechanism according to claim 1, characterized in that: The mounting through hole (201) comprises a first hole section (2011) and a second hole section (2012) which are connected to each other, the hole diameter of the first hole section (2011) being larger than the hole diameter of the second hole section (2012), and the first hole section (2011) being located on a side of the second hole section (2012) close to the bottom wall of the transmission groove (103).
6. The counterweight balancing block mechanism according to claim 1, characterized in that: The groove peripheral wall of the transmission groove (103) comprises a connected arc-shaped surface (1031) and a contact surface (1032), wherein the contact surface (1032) protrudes from the arc-shaped surface (1031) toward the middle position of the transmission groove (103); the first matching surface (210) is spaced apart from the arc-shaped surface (1031), and the second matching surface (220) is in contact with the contact surface (1032).
7. A movable scroll drive device, characterized in that: The movable scroll driving device comprises: The counterweight balancing block mechanism according to any one of claims 1 to 6.
8. The movable scroll driving device according to claim 7, characterized in that: The movable scroll drive device further comprises a motor shaft (300) and a positioning pin (400); the motor shaft (300) is provided with an assembly hole; the positioning pin (400) is inserted into the assembly hole and is eccentrically arranged with respect to the assembly hole; and the positioning pin (400) is simultaneously passed through the positioning through hole (102) and the mounting through hole (201).
9. The movable scroll driving device according to claim 8, characterized in that: The movable scroll driving device further comprises an assembled bearing (500), the inner ring of the assembled bearing (500) being sleeved on the outside of the eccentric sleeve (200), and the outer ring of the assembled bearing (500) being used for being fixedly connected to the movable scroll body (600).
10. A scroll compressor, characterized in that: The scroll compressor comprises: The movable scroll drive device according to any one of claims 7 to 9.