Orbiting scroll and scroll compressor assembly

Abstract

The utility model provides an orbiting scroll and a scroll compressor assembly, and relates to the field of compressors. The orbiting scroll comprises a bottom plate part and a molded line part, and the bottom plate part is provided with a first plate face and a second plate face which are oppositely arranged in the thickness direction of the bottom plate part. And an assembly hole is formed in the first plate surface. The molded line part is convexly arranged on the second plate surface; the first mass center of the bottom plate part and the second mass center of the molded line part are both located on the central axis of the assembling hole, and the first mass center and the second mass center are located on the two sides, in the extending direction of the central axis of the assembling hole, of the mass center of the movable vortex plate. When the orbiting scroll is used for secondary balance design, secondary balance can be achieved when all moving parts are located at any phase position, so that the compressor can operate stably, and the purpose of reducing vibration and noise in the operation process of the compressor is achieved.

Description

Technical Field

[0001] The utility model relates to the field of compressors, and in particular to a movable scroll and a scroll compressor assembly. Background Art

[0002] Please combine Figure 1-Figure 4 In the prior art, a scroll compressor generally includes a movable scroll assembly 01, a counterweight balancing block 02, an upper rotor balancing block 03, a lower rotor balancing block 04, a rotor core 05, a motor shaft assembly 06, a main bearing 07, a secondary bearing 08, and an anti-rotation pin, among which the motor shaft assembly 06 is mainly composed of a motor shaft 061 and an eccentric pin 062; except for the anti-rotation pin, the main bearing 07 and the secondary bearing 08, which are fixed in the compressor and do not move, the remaining parts will move relative to each other. During the operation of the scroll compressor, the rotor core 05 rotates under the action of electromagnetic force, and drives the motor shaft 061, the eccentric pin 062, the counterweight balancing block 02 and the movable scroll assembly 01 to rotate in turn; the movable scroll assembly 01, under the restriction of the anti-rotation pin, finally moves in a circular translation around the axis of the motor shaft 061. The volume of the closed working chamber formed by the meshing of the profile between the movable scroll assembly 01 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. In order to ensure the smooth operation of the compressor, it is usually necessary to perform dynamic balancing design on the compressor. Generally, two balancing designs are required, as follows:

[0003] One-time balancing design: Split the movable scroll parts into the bottom plate structure and the profile structure along the movable scroll dividing surface, and find the center of mass of the bottom plate structure and the profile structure; the center of mass of the bottom plate structure in the initial state is located on the rotation center line of the movable scroll bearing mounting hole, and the center of mass of the movable scroll profile is located at the Q2 point outside the rotation center line of the movable scroll bearing mounting hole. In order to make the overall center of mass of the movable scroll on the rotation center line of the movable scroll bearing mounting hole and located at the Q1 point; usually, the method of opening a counterweight groove on the bottom plate of the movable scroll is adopted to adjust the center of mass of the bottom plate structure to the Q3 point, and make the center of mass of the bottom plate structure and the center of mass of the movable scroll profile respectively located on both sides of the rotation center line of the movable scroll bearing mounting hole, so that the overall center of mass of the movable scroll is located on the rotation center line of the movable scroll bearing mounting hole and located at the Q1 point, which is the one-time balancing process.

[0004] Secondary balancing design: By designing the weight and shape of the upper balancing block 03 and the lower balancing block 04 of the rotor, the unbalanced inertia force and unbalanced inertia moment generated when the movable scroll assembly 01, the counterweight balancing block 02, the eccentric pin 062, and the motor shaft 061 move relative to the center of the motor shaft 061 are balanced; ultimately, the resultant force of the inertia forces F1, F2, F3, F4, F5, and F6 on the above-mentioned moving parts is zero, and the resultant moment of the inertia moment of each inertia force in the first calibration surface and the second calibration surface is zero, which is the secondary balancing process. Through the above two dynamic balancing designs, the purpose of reducing vibration and noise during the operation of the compressor is finally achieved.

[0005] The inventors found in their research that the dynamic balance design of the scroll compressor in the prior art has at least the following disadvantages:

[0006] When the movable scroll designed by the existing primary balancing method is used for the secondary balancing design of the compressor, the secondary balancing can only be achieved when each moving part is in the initial phase, and the secondary balancing cannot be achieved in the other phases. The specific reason is that during the operation of the scroll compressor, when each moving part rotates around the center of the motor shaft 061, the movable scroll does not rotate around the center of the motor shaft 061 together, but makes a circular translation around the center of the motor shaft 061; therefore, the inertial force of the movable scroll designed by the existing primary balancing method during the movement process, and the inertial moment of the inertial force in the first check plane and the second check plane, will change with the change of the rotation phase angle; thus, the resultant force of the inertial force on each moving part, and the resultant moment of the inertial force of each inertial force in the first check plane and the second check plane, will also change with the change of the rotation phase angle. Ultimately, the compressor can only achieve secondary balancing when each moving part is in the initial phase, and cannot achieve secondary balancing in the other phases, which leads to a series of problems such as unstable operation of the compressor, increased vibration and noise. Utility Model Content

[0007] The purpose of the utility model is to provide a movable scroll and a scroll compressor assembly, which can improve the above-mentioned technical problems.

[0008] The embodiment of the utility model is achieved as follows:

[0009] In a first aspect, the utility model provides a movable scroll, comprising:

[0010] A bottom plate portion and a profile portion, wherein the bottom plate portion has a first plate surface and a second plate surface arranged opposite to each other in the thickness direction thereof, and an assembly hole is provided on the first plate surface; and the profile portion is convexly provided on the second plate surface;

[0011] The first mass center of the bottom plate portion and the second mass center of the profile portion are both located on the central axis of the assembly hole, and the first mass center and the second mass center are located on both sides of the mass center of the movable scroll in the extending direction of the central axis of the assembly hole.

[0012] In an optional embodiment, the profile portion includes a profile body and a counterweight body, both of which are protruding from the second plate surface, and the height of the counterweight body is the same as that of the profile body; the height direction of the counterweight body is consistent with the height direction of the profile body and is parallel to the extension direction of the central axis of the assembly hole.

[0013] Based on the above scheme, by adding a counterweight body, the center of mass of the structure obtained by combining the profile body and the counterweight body can be placed on the central axis of the assembly hole, and the parameters of the counterweight body can be adjusted according to the parameters of the profile body. The design is flexible and has a wide range of applications.

[0014] In an optional embodiment, the cross section of the counterweight body is the same everywhere in the extension direction of the central axis of the assembly hole, and the cross section is a plane perpendicular to the central axis of the assembly hole.

[0015] Based on the above solution, the design of the counterweight body is reasonable, and it can be matched with the profile body to ensure that the center of mass of the entire profile part is always on the central axis of the assembly hole.

[0016] In an optional embodiment, the bottom plate portion includes a bottom plate body and a plurality of counterweight bosses, the assembly hole is opened on the bottom plate body, and the profile body is protruded on the mounting surface of the bottom plate body; the plurality of counterweight bosses are all installed on the outer peripheral surface of the bottom plate body, and the plurality of counterweight bosses are arranged at intervals in the circumferential direction of the assembly hole, and each of the counterweight bosses is provided with a positioning surface, and the positioning surfaces of all the counterweight bosses are located in the same plane as the mounting surface and jointly define the second plate surface; the counterweight body is protruded on the positioning surface of a counterweight boss among the plurality of counterweight bosses.

[0017] Based on the above scheme, by setting the bottom plate body and multiple counterweight bosses, the parameters of the bottom plate body and the counterweight bosses can be adaptively adjusted to ensure that the center of mass of the bottom plate portion can always be located on the central axis of the assembly hole. The design is flexible and has a wide range of applications. It can meet the design of scroll compressors of different models and reduce manufacturing costs. At the same time, the counterweight boss provides an installation platform for the counterweight body, which is convenient for the installation of the counterweight body, so that the counterweight body cooperates with the profile body to realize that the center of mass of the profile portion is located on the central axis of the assembly hole, and will not affect the center of mass position of the bottom plate portion, ensuring that the center of mass of the bottom plate portion is located on the central axis of the assembly hole.

[0018] In an optional embodiment, the counterweight body is protruded from the counterweight boss in a radially outward direction of the assembly hole.

[0019] Based on the above scheme, the counterweight boss has a small size in the radial outward direction of the assembly hole, the volume of the bottom plate is small, and the space occupied is small, which is conducive to installation. It can also reduce the weight of the bottom plate and save processing materials for the bottom plate.

[0020] In an optional embodiment, a plurality of positioning grooves arranged around the assembly hole are provided on the first plate surface.

[0021] Based on the above solution, the anti-rotation pin installed on the front cover can be positioned through the positioning groove to regulate the movement of the movable scroll.

[0022] In an optional embodiment, a plurality of weight-reducing holes are provided on the first plate surface.

[0023] Based on the above solution, the weight of the bottom plate can be reduced, processing and manufacturing materials can be saved, and processing and manufacturing costs can be reduced.

[0024] In a second aspect, the utility model provides a scroll compressor assembly, the scroll compressor assembly comprising:

[0025] The movable scroll according to any one of the preceding embodiments.

[0026] In an optional embodiment, the scroll compressor assembly also includes a drive shaft, a first bearing, a second bearing, a rotor assembly, a counterweight and balance member, a force transfer pin and a force transfer bearing, wherein the first bearing and the second bearing are both mounted on the drive shaft and arranged at intervals; the rotor assembly is mounted on the drive shaft and is located between the first bearing and the second bearing; the counterweight and balance member is mounted on the drive shaft through the force transfer pin; the counterweight and balance member is connected to the inner ring of the force transfer bearing, and the outer ring of the force transfer bearing is embedded in the assembly hole; the central axis of the drive shaft is parallel to the central axis of the assembly hole and has a set spacing.

[0027] Based on the above scheme, the rotation of the rotor assembly can drive the drive shaft to rotate, thereby driving the counterweight balance member and the force transmission bearing to rotate through the force transmission pin, and finally realizing the circumferential translation of the movable scroll.

[0028] In an optional embodiment, the scroll compressor assembly further includes an upper balancing member and a lower balancing member, and the upper balancing member and the lower balancing member are both mounted on the rotor assembly.

[0029] Based on the above solution, the stability of the scroll compressor assembly during operation can be improved and the noise can be reduced.

[0030] The beneficial effects of the embodiments of the utility model are:

[0031] In summary, the movable scroll provided in this embodiment is formed into a bottom plate portion and a profile portion by separating the movable scroll with a movable scroll dividing surface, and then the first center of mass of the bottom plate portion and the second center of mass of the profile portion are adjusted separately to the central axis of the assembly hole, so that the center of mass of the movable scroll as a whole is finally located on the central axis of the assembly hole and between the first center of mass and the second center of mass. In this way, the primary balancing design of the scroll compressor is completed, and then the secondary balancing design of the scroll compressor is performed. When the movable scroll designed by the primary balancing method of the embodiment of the present application is used for the secondary balancing design of the compressor, the secondary balance can be achieved when each moving part is located at any phase, that is, the resultant force of the inertial force of each moving part and the resultant moment of the inertial moment of each inertial force in the first calibration plane and the second calibration plane will not change with the change of the rotation phase angle; thereby, the compressor can run smoothly, and the purpose of reducing vibration and noise during the operation of the compressor is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] 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.

[0033] Figure 1 A schematic diagram of a scroll compressor of the prior art;

[0034] Figure 2 It is a cross-sectional schematic diagram of a movable scroll assembly in the prior art;

[0035] Figure 3 A schematic diagram of a movable scroll assembly from one perspective of the prior art;

[0036] Figure 4 A schematic diagram of another perspective of a movable scroll assembly of the prior art;

[0037] Figure 5 It is a cross-sectional schematic diagram of a movable scroll according to an embodiment of the utility model;

[0038] Figure 6 It is an axonometric schematic diagram of a movable scroll from one perspective of an embodiment of the utility model;

[0039] Figure 7 It is an axonometric schematic diagram of another perspective of the movable scroll of an embodiment of the utility model;

[0040] Figure 8 A schematic diagram of the centroid of the movable scroll of an embodiment of the utility model;

[0041] Fig. 9A schematic diagram of the centroid of the profile portion of an embodiment of the utility model;

[0042] Fig.10 A schematic diagram of the centroid of the bottom plate of an embodiment of the utility model;

[0043] Fig.11 It is a schematic diagram of a scroll compressor assembly according to an embodiment of the present utility model.

[0044] icon:

[0045] 01-orbiting scroll assembly; 02-counterweight balance block; 03-rotor upper balance block; 04-rotor lower balance block; 05-rotor core; 06-motor shaft assembly; 061-motor shaft; 062-eccentric pin; 07-main bearing; 08-auxiliary bearing;

[0046] 001-moving scroll dividing surface; 002-central axis; 003-first calibration surface; 004-second calibration surface; 100-moving scroll; 110-bottom plate portion; 111-bottom plate body; 112-counterweight boss; 113-assembly hole; 114-anti-rotation groove; 115-weight reduction hole; 120-profile portion; 121-profile body; 122-counterweight body; 200-drive shaft; 300-first bearing; 400-second bearing; 500-rotor assembly; 600-counterweight balancing member; 700-force transmission pin; 800-force transmission bearing; 900-upper balancing member; 910-lower balancing member. DETAILED DESCRIPTION

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] In the prior art, when a scroll compressor is dynamically balanced, the center of mass of the bottom plate structure and the center of mass of the profile structure of the movable scroll 100 obtained by the primary balancing design are both spaced from the center line of rotation of the bearing mounting hole of the movable scroll 100, that is, the center of mass of the bottom plate structure and the center of mass of the profile structure do not fall on the center line of rotation. As a result, when a secondary balancing design is performed, secondary balance can only be achieved when each moving component is in an initial phase, and cannot be achieved in the remaining phases. As a result, the scroll compressor has poor stability, large vibration, and high noise during operation.

[0054] In view of this, the designer provides a movable scroll 100. When the movable scroll 100 is used for secondary balancing design, secondary balance can be achieved when each moving component is located at any phase, that is, the resultant force of the inertia forces acting on each moving component and the resultant moment of inertia of each inertia force within the first check surface 003 and the second check surface 004 will not change with the change of the rotation phase angle; thereby, the compressor can run smoothly, achieving the purpose of reducing vibration and noise during the operation of the compressor.

[0055] Please combine Figure 5-Figure 10In this embodiment, the movable scroll 100 includes a bottom plate portion 110 and a profile portion 120, and the bottom plate portion 110 has a first plate surface and a second plate surface arranged opposite to each other in the thickness direction thereof. An assembly hole 113 is provided on the first plate surface. The profile portion 120 is convexly provided on the second plate surface. The first mass center of the bottom plate portion 110 and the second mass center of the profile portion 120 are both located on the central axis 002 of the assembly hole 113, and the first mass center and the second mass center are located on both sides of the mass center of the movable scroll 100 in the extension direction of the central axis 002 of the assembly hole 113.

[0056] Based on the above, the movable scroll 100 provided in this embodiment has at least the following advantages:

[0057] When the movable scroll 100 designed by the primary balancing method of the embodiment of the present application is used for the secondary balancing design of the compressor, it can be achieved that when each moving component is located at any phase, the secondary balance can be achieved, that is, the resultant force of the inertial forces acting on each moving component and the resultant moment of inertia of each inertial force within the first check surface 003 and the second check surface 004 will not change with the change of the rotation phase angle; thereby, the compressor can run smoothly, achieving the purpose of reducing vibration and noise during the operation of the compressor.

[0058] It should be noted that the second plate surface may also be referred to as an orbiting scroll dividing surface 001, through which the orbiting scroll 100 can be divided into a bottom plate portion 110 and a profile portion 120. When the orbiting scroll 100 is cut at any position by two planes arranged at intervals parallel to the orbiting scroll dividing surface 001, the center of mass of the orbiting scroll 100 portion between the two planes is located on the central axis 002 of the assembly hole 113.

[0059] The following embodiments illustrate the details of the movable scroll 100 provided in the present application by way of examples.

[0060] Please combine Figure 5-Figure 7In this embodiment, optionally, the bottom plate portion 110 includes a bottom plate body 111 of an integrated structure and two counterweight bosses 112. The bottom plate body 111 is a disc structure, and the two counterweight bosses 112 are of the same shape and size. The two counterweight bosses 112 are both located on the outer peripheral surface of the bottom plate body 111 and are evenly spaced and arranged in the circumferential direction of the bottom plate body 111. At the same time, the bottom plate body 111 is provided with a mounting surface, and each counterweight boss 112 is provided with a positioning surface. The mounting surface of the bottom plate body 111 and the positioning surface of the counterweight boss 112 are located in the same plane, and the positioning surfaces of all positioning bosses cooperate with the mounting surface of the bottom plate body 111 to define a second plate surface. The assembly hole 113 is provided on the other plate surface of the bottom plate body 111 opposite to the mounting surface. The assembly hole 113 is a circular hole and is colinear with the axis of the bottom plate body 111. Since the base plate body 111 itself is a disc structure, its center of mass is located on the central axis 002 of the assembly hole 113, and the two counterweight bosses 112 are consistent in shape and size, and are symmetrically arranged relative to the central axis of the base plate body 111, so that the center of mass of the structure in which the two counterweight bosses 112 cooperate is also located on the central axis 002 of the assembly hole 113. In this way, the base plate body 111 and the two counterweight bodies 122 cooperate so that the center of mass of the base plate portion 110 is located on the central axis 002 of the assembly hole 113.

[0061] It should be understood that in other embodiments, the number of the counterweight bosses 112 is set as needed and is not limited to two. When multiple counterweight bosses 112 are matched, the multiple counterweight bosses 112 can be distributed in the circumferential direction of the base plate body 111 and arranged at intervals to ensure that the center of mass of the structure in which the base plate body 111 and the multiple counterweight bosses 112 match falls on the center axis 002 of the assembly hole 113.

[0062] In addition, the thickness of each counterweight boss 112 can be set to be consistent with the thickness of the bottom plate body 111, wherein the thickness direction of the counterweight boss 112 is consistent with the thickness direction of the bottom plate body 111 and both are in the extension direction of the central axis 002 of the assembly hole 113. The thickness of the bottom plate body 111 is the distance between the installation surface and the board surface where the assembly hole 113 is set.

[0063] Furthermore, six anti-rotation grooves 114 and six weight-reducing holes 115 are also provided on the plate surface of the bottom plate body 111 provided with the assembly hole 113. The six anti-rotation grooves 114 are evenly spaced in the circumferential direction of the assembly hole 113, and each anti-rotation groove 114 is used to position an anti-rotation pin, which is fixed to the front cover of the scroll compressor assembly. It should be understood that the number of anti-rotation grooves 114 and the number of weight-reducing holes 115 are not limited to six, so as to ensure that even if the anti-rotation grooves 114 and the weight-reducing holes 115 are provided, the center of mass of the bottom plate portion 110 can be located on the central axis 002 of the assembly hole 113.

[0064] It should be noted that, by providing the weight-reducing holes 115 , the weight of the bottom plate body 111 can be reduced, processing materials can be saved, and thus the processing and manufacturing costs can be saved.

[0065] Please combine Figure 5-Figure 7 In this embodiment, optionally, the profile part 120 includes a profile body 121 and a counterweight body 122. The profile body 121 is convexly disposed on the mounting surface of the base plate body 111, and the counterweight body 122 is convexly disposed on the positioning surface of one of the counterweight bosses 112 among the plurality of counterweight bosses 112, and the height of the counterweight body 122 is the same as that of the profile body 121, wherein the height direction of the counterweight body 122 is consistent with the height direction of the profile body 121 and is parallel to the extension direction of the central axis 002 of the assembly hole 113. At the same time, the cross section of the counterweight body 122 is the same everywhere in the extension direction of the central axis 002 of the assembly hole 113, and the cross section is a plane perpendicular to the central axis 002 of the assembly hole 113. Through the cooperation between the profile main body 121 and the counterweight body 122, the center of mass of the profile part 120 can be located on the central axis 002 of the assembly hole 113, and the parameters of the counterweight body 122 can be adjusted according to the parameters of the profile main body 121. The two are designed to cooperate with each other, with flexible design and wide application range.

[0066] It should be noted that when the diameter of the bottom plate body 111 is large enough, it is not necessary to provide the counterweight boss 112 on the bottom plate body 111 , and the counterweight body 122 can be directly installed on the installation surface of the bottom plate body 111 .

[0067] Please combine Figure 8-Figure 10 The movable scroll 100 provided in the present embodiment is divided into a bottom plate portion 110 and a profile portion 120 by a movable scroll dividing surface 001, and then the first center of mass of the bottom plate portion 110 and the second center of mass of the profile portion 120 are adjusted separately to the central axis 002 of the assembly hole 113, so that the center of mass of the movable scroll 100 as a whole is finally located on the central axis 002 of the assembly hole 113, and is located between the first center of mass and the second center of mass. In this way, the primary balance design of the scroll compressor is completed. When the movable scroll 100 designed by the primary balance method of the embodiment of the present application is used for the secondary balance design of the compressor, the secondary balance can be achieved when each moving component is located at any phase, that is, the resultant force of the inertia force of each moving component and the resultant moment of the inertia moment of each inertia force in the first check surface 003 and the second check surface 004 will not change with the change of the rotation phase angle, thereby enabling the compressor to run smoothly, with small vibration and low noise during the operation of the compressor.

[0068] Please combine Fig.11The present embodiment also provides a scroll compressor assembly, including a drive shaft 200, a first bearing 300, a second bearing 400, a rotor assembly 500, a counterweight balancing member 600, a force transmission pin 700, a force transmission bearing 800, a movable scroll 100, an upper balance member 900 and a lower balance member 910. The first bearing 300 and the second bearing 400 are both mounted on the drive shaft 200 and arranged at intervals. The rotor assembly 500 is mounted on the drive shaft 200 and is located between the first bearing 300 and the second bearing 400; the counterweight balancing member 600 is mounted on the drive shaft 200 through the force transmission pin 700, and the force transmission pin 700 is eccentrically arranged with the drive shaft 200, and the first bearing 300 is located on the side of the rotor assembly 500 away from the counterweight balancing block 02. The counterweight balancing member 600 is connected to the inner ring of the force transmission bearing 800, and the outer ring of the force transmission bearing 800 is embedded in the assembly hole 113. The central axis 002 of the driving shaft 200 is parallel to the central axis 002 of the assembly hole 113 and has a set distance. The upper balancer 900 and the lower balancer 910 are both mounted on the rotor assembly 500 .

[0069] The scroll compressor assembly provided in this embodiment has high stability and low noise during operation because the centers of mass of the bottom plate portion 110 and the profile portion 120 of the movable scroll 100 are both on the central axis 002 of the assembly hole 113.

[0070] This embodiment also provides a scroll compressor assembly dynamic balance design method, the method comprising the following steps:

[0071] First, a balancing design is performed, and the movable scroll 100 is split into the bottom plate portion 110 and the profile portion 120 along the movable scroll dividing surface 001, and the first center of mass of the bottom plate portion 110 and the second center of mass of the profile portion 120 are adjusted to the center axis 002 of the assembly hole 113 on the bottom plate portion 110, so that the center of mass of the movable scroll 100 is located on the center axis 002 of the assembly hole 113. Among them, the center of mass of the movable scroll 100 can be represented by Q1, the first center of mass can be represented by Q3, and the second center of mass can be represented by Q2. At the same time, during the first balancing design, the center of mass of the profile portion 120 formed by the counterweight body 122 and the profile body 121 can be located on the center axis 002 of the assembly hole 113 by adding a counterweight body 122, and then the structure design of the bottom plate portion 110 is performed according to the position of the counterweight body 122 relative to the bottom plate body 111. The design of the bottom plate 110 can be divided into two cases. In the first case, when the position of the counterweight body 122 relative to the bottom plate 110 does not fall on the bottom plate body 111 of the bottom plate 110, at this time, a counterweight boss 112 is set on the bottom plate body 111 to provide a position for the installation of the counterweight body 122. Correspondingly, the number and shape and size of the counterweight boss 112 are set as required to ensure that the center of mass of the bottom plate 110 composed of the bottom plate body 111 and all the counterweight bosses 112 falls on the central axis 002 of the assembly hole 113. In the second case, when the position of the counterweight body 122 relative to the bottom plate 110 falls on the bottom plate body 111 of the bottom plate 110, at this time, the counterweight body 122 can be directly set on the bottom plate body 111, without adding a counterweight boss 112 on the bottom plate body 111, which simplifies the structure, saves materials, and reduces processing and manufacturing costs.

[0072] Then, a secondary balancing design is performed, and the weight and shape of the upper balancing member 900 and the lower balancing member 910 are designed to balance the unbalanced inertia force and unbalanced inertia moment generated when the movable scroll 100, the counterweight balancing block 02, the force transmission pin 700, and the drive shaft 200 rotate relative to the central axis 002 of the drive shaft 200, and the resultant force of the inertia force F1 on the upper balancing member 900, the inertia force F2 on the lower balancing member 910, the inertia force F3 on the balancing movable scroll 100, the inertia force F4 on the counterweight balancing block 02, the inertia force F5 on the force transmission pin 700, and the inertia force F6 on the drive shaft 200 is zero, and the resultant moment of the inertia moment of each inertia force in the first check surface 003 and the second check surface 004 is zero, which is the secondary balancing process. Through the two balancing designs, the purpose of reducing vibration and noise during the operation of the compressor is achieved.

[0073] The first check surface 003 is perpendicular to the drive shaft 200 and bisects the first bearing 300 , and the second check surface 004 is perpendicular to the drive shaft 200 and bisects the second bearing 400 .

[0074] As described above, the first center of mass of the bottom plate portion 110 and the second center of mass of the profile portion 120 are separately adjusted to the central axis 002 of the assembly hole 113, so that the center of mass of the movable scroll 100 as a whole is located on the central axis 002 of the assembly hole 113, and is located between the first center of mass and the second center of mass. Then, the movable scroll 100 is used to perform secondary balancing design of the compressor, so that when each moving component is located at any phase, secondary balancing can be achieved, that is, the resultant force of the inertial force exerted on each moving component and the resultant moment of the inertial moment of each inertial force in the first check surface 003 and the second check surface 004 will not change with the change of the rotation phase angle; thereby, the compressor can run smoothly, thereby achieving the purpose of reducing vibration and noise during the operation of the compressor.

[0075] 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 movable scroll, characterized in that: include: A bottom plate portion (110) and a profile portion (120), wherein the bottom plate portion (110) comprises a first plate surface and a second plate surface arranged opposite to each other in a thickness direction thereof, wherein an assembly hole (113) is provided on the first plate surface; and the profile portion (120) is protruding from the second plate surface; The first center of mass of the bottom plate portion (110) and the second center of mass of the profile portion (120) are both located on the center axis (002) of the assembly hole (113), and the first center of mass and the second center of mass are located on both sides of the center of mass of the movable scroll (100) in the extension direction of the center axis (002) of the assembly hole (113).

2. The movable scroll according to claim 1, characterized in that: The profile part (120) comprises a profile body (121) and a counterweight body (122); the profile body (121) and the counterweight body (122) are both protruding from the second plate surface; the height of the counterweight body (122) is the same as that of the profile body (121); the height direction of the counterweight body (122) is consistent with the height direction of the profile body (121) and is parallel to the extension direction of the center axis (002) of the assembly hole (113).

3. The movable scroll according to claim 2, characterized in that: The cross section of the counterweight body (122) is the same everywhere in the extension direction of the central axis (002) of the assembly hole (113), and the cross section is a plane perpendicular to the central axis (002) of the assembly hole (113).

4. The movable scroll according to claim 2, characterized in that: The bottom plate portion (110) comprises a bottom plate body (111) and a plurality of counterweight bosses (112); the assembly hole (113) is provided on the bottom plate body (111); the profile body (121) is protruded on the mounting surface of the bottom plate body (111); the plurality of counterweight bosses (112) are all mounted on the outer peripheral surface of the bottom plate body (111); the plurality of counterweight bosses (112) are arranged at intervals in the circumferential direction of the assembly hole (113); each of the counterweight bosses (112) is provided with a positioning surface; the positioning surfaces of all the counterweight bosses (112) and the mounting surface are located in the same plane and jointly define the second plate surface; the counterweight body (122) is protruded on the positioning surface of one of the plurality of counterweight bosses (112).

5. The movable scroll according to claim 4, characterized in that: The counterweight body (122) is protruded from the counterweight boss (112) in a radially outward direction of the assembly hole (113).

6. The movable scroll according to claim 1, characterized in that: The first plate surface is provided with a plurality of positioning grooves arranged around the assembly hole (113).

7. The movable scroll according to claim 1, characterized in that: A plurality of weight-reducing holes (115) are arranged on the first plate surface.

8. A scroll compressor assembly, characterized in that: The scroll compressor assembly comprises: The movable scroll (100) according to any one of claims 1 to 7.

9. The scroll compressor assembly according to claim 8, characterized in that: The scroll compressor assembly further comprises a drive shaft (200), a first bearing (300), a second bearing (400), a rotor assembly (500), a counterweight and balance member (600), a force transmission pin (700) and a force transmission bearing (800), wherein the first bearing (300) and the second bearing (400) are both mounted on the drive shaft (200) and arranged at intervals; the rotor assembly (500) is mounted on the drive shaft (200) and is located between the first bearing (300) and the second bearing (400); the counterweight and balance member (600) is mounted on the drive shaft (200) through the force transmission pin (700); the counterweight and balance member (600) is connected to the inner ring of the force transmission bearing (800), and the outer ring of the force transmission bearing (800) is embedded in the assembly hole (113); the central axis (002) of the drive shaft (200) is parallel to the central axis (002) of the assembly hole (113) and has a set spacing.

10. The scroll compressor assembly according to claim 9, characterized in that: The scroll compressor assembly further comprises an upper balancing member (900) and a lower balancing member (910), wherein the upper balancing member (900) and the lower balancing member (910) are both mounted on the rotor assembly (500).

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