Rotor baffle assembly, motor and compressor
By setting enlarged holes and weighted structures on the rotor baffle, the problem of large overall size and weight of the motor in the prior art is solved, and a thinner and lighter rotor baffle design is achieved, which reduces production costs and improves the dynamic balance and vibration performance of the motor.
Patent Information
- Application Number
- CN202423227032.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-25
AI Technical Summary
Existing rotor dynamic balancing calibration methods result in larger overall motor size and weight, affecting the motor's structural design and cost.
Design a rotor baffle assembly. By setting enlarged holes on the rotor baffle and setting weighting structures in or around the enlarged holes, dynamic balance calibration can be achieved by utilizing different cross-sectional areas of the enlarged holes and boss structures, thus avoiding the use of threaded holes.
It effectively reduces the thickness of the rotor baffle and the overall size and weight of the motor, lowers production costs, improves the flexibility and reliability of dynamic balance adjustment, reduces vibration and noise, and extends the mechanical life of the motor.
Smart Images
Figure CN223613155U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to motor technical field, concretely relates to a rotor baffle assembly, motor and compressor. BACKGROUND
[0002] The current development integrated permanent magnet motor system is integrated by motor body and driving system. The motor has driving system and instruction, and the client does not need to additionally configure frequency converter and driver. The adaptability of load development is improved, and the terminal application is more convenient.
[0003] The motor system development considers the driving module, optimizes and most reasonably designs the structure size, and the motor body size needs to be reasonably developed. The compression or control of the body size directly affects the inner cavity size, and further affects the internal scheme design.
[0004] The motor body inner cavity is mainly composed of stator and rotor. Under the condition of meeting the electromagnetic scheme design and electrical safety size, the space size is greatly compressed. Further, the design of the rotor baffle of the rotor component is affected. The rotor is composed of rotor core, magnetic steel, rotor baffle and rivet. The main functions of the rotor baffle are to limit the magnetic steel, ensure the consistency of the magnetic steel assembly into the core, and rivet the core punching piece to prevent the end face on both sides from being warped by external force or magnetic force. At the same time, due to the limitation of the assembly position of the baffle, the calibration of the rotor dynamic balance also needs to be considered on the structure. Through the calibration of the rotor dynamic balance, the vibration of the whole machine is most effectively improved, and the long-term mechanical life of the motor is improved.
[0005] The calibration method of the rotor dynamic balance is generally divided into two ways of removing and adding weight. Among them, the removing way is mostly designed as a non-magnetic soft metal material, the material thickness is increased, and part of the material is removed by tools or equipment during calibration to meet the balance requirement. The adding weight is mostly designed to increase the balance screw or balance cement on the rotor baffle. No matter which way, the baffle with a certain space thickness size is needed to provide the space for the weight / weight removal, so the overall axial size of the rotor is increased.
[0006] The existing calibration method of the rotor dynamic balance includes the screw weight calibration method. This method needs to process a threaded hole on the rotor baffle. In order to ensure the assembly thickness of the screw, the thickness of the baffle needs to be increased as much as possible, which leads to the large overall size and weight of the motor. In addition, the self-weight of the thick baffle also brings a certain amount of unbalance, which affects the dynamic balance of the rotor.
[0007] Since the calibration method of the rotor dynamic balance in the prior art has the technical problems of large overall size and weight of the motor, a rotor baffle assembly, a motor and a compressor are designed. UTILITY MODEL CONTENTS
[0008] Therefore, the utility model wants to overcome the calibration mode of rotor dynamic balance in prior art has the defects that the overall size and weight of motor are relatively large, so as to provide a rotor baffle assembly, motor and compressor.
[0009] In order to solve the above problems, the utility model provides a rotor baffle assembly, it includes:
[0010] Rotor baffle and weight structure, the rotor baffle is provided with the counterbore, the counterbore has the axis, the axis of the counterbore is parallel with the axis of the rotor baffle, along the direction of the axis of the counterbore, the counterbore is the hole structure with at least two cross section areas, the counterbore is at least two, at least two the counterbore is arranged at the circumferential direction of the rotor baffle, at least one the counterbore and / or the outer periphery of at least one the counterbore is provided with the weight structure.
[0011] In some embodiments,
[0012] From the direction of one end of the axis of the counterbore to the other end of the axis, the counterbore is the hole structure that cross section area increases gradually, decreases gradually, increases first and then decreases, or decreases first and then increases.
[0013] In some embodiments,
[0014] The counterbore includes the through hole structure from the axial one end surface of the rotor baffle to the axial other end surface, namely first counterbore.
[0015] In some embodiments,
[0016] The rotor baffle is further provided with boss structure on the axial one end surface, the boss structure is arranged at the first counterbore, the inner periphery of the boss structure forms second counterbore, the inner periphery wall of the second counterbore is connected with the inner periphery wall of the first counterbore, and the counterbore includes the first counterbore and the second counterbore.
[0017] In some embodiments,
[0018] The weight structure can be arranged in the first counterbore and / or the second counterbore, and the weight structure can be arranged on the outer periphery of the boss structure.
[0019] In some embodiments,
[0020] When the cross section area of the counterbore gradually increases from one end of the axis to the other end of the axis, the overall hole structure connected by the first counterbore and the second counterbore gradually increases from the direction of one end of the axis of the first counterbore away from the second counterbore to the direction of one end of the axis of the second counterbore away from the first counterbore.
[0021] In some embodiments,
[0022] When the cross-sectional area of the hole gradually decreases from one axial end to the other axial end of the hole, the overall hole structure connected by the first hole and the second hole is a structure with gradually decreasing cross-sectional area from the axial end of the first hole away from the axial end of the second hole to the axial end of the second hole away from the axial end of the first hole.
[0023] In some embodiments,
[0024] When the cross-sectional area of the hole gradually decreases from one axial end to the other axial end of the hole, the overall hole structure connected by the first hole and the second hole is a structure with gradually decreasing cross-sectional area from the axial end of the first hole away from the axial end of the second hole to the axial end of the second hole away from the axial end of the first hole.
[0025] In some embodiments,
[0026] When the cross-sectional area of the hole gradually decreases from one axial end to the other axial end of the hole, the overall hole structure connected by the first hole and the second hole is a structure with gradually decreasing cross-sectional area from the axial end of the first hole away from the axial end of the second hole to the axial end of the second hole away from the axial end of the first hole.
[0027] In some embodiments,
[0028] The boss structure is formed by stamping, that is, the first hole is formed first by stamping a punch from the axial end of the rotor baffle towards the rotor baffle, and then the second hole and the boss structure are formed last.
[0029] In some embodiments,
[0030] The weight structure is a cement structure bonded to the inner wall of the hole and the outer peripheral wall of the boss structure, and the cement structure can be fixed at the bonded position after being dried in contact with air.
[0031] In some embodiments,
[0032] The axial end surface of the rotor baffle is also provided with a rib protruding outward, the rib is at least two arranged in the circumferential direction, and the weight structure can be arranged between adjacent ribs.
[0033] The utility model also provides a motor which comprises the rotor baffle assembly.
[0034] The utility model also provides a compressor which comprises the motor.
[0035] The rotor baffle assembly, the motor and the compressor have the following beneficial effects.
[0036] 1. The rotor baffle assembly, the motor and the compressor have the following beneficial effects.
[0037] 2. The rotor baffle structure thickness size is thinnest, can be designed as two iron core punching sheet sizes, the maximum compression space size, provides the possibility for the most reasonable and optimal structure design for the whole machine development; the extremely thin rotor baffle is provided with the self material weight reduction, cost reduction, whole machine structure size compression, also reduces the whole machine structure material consumption, reduces the rotor weight, controls the lower cost, and the baffle is simple to stamp, the shape can be pressed at random, the production process is simpler, the practicality is high, and the processing cost is reduced; the rotor baffle is extremely thin, can realize the imbalance caused by the self weight reduction, provides the possibility for the lower imbalance of the rotor; the lower imbalance most effectively improves the whole machine vibration, further improves noise, also improves long-term mechanical damage, structure fatigue failure caused by vibration, and even further improves the chain damage and failure caused by the transmission of adverse vibration to downstream load through the transmission system; the rotor baffle is thinner, and the dynamic balance hole is realized by a variety of ways of divergent stamping, provides the combination strength support for the weight compensation mode, realizes high strength combination in the smallest space, and guarantees the long-term reliability of the weight compensation. BRIEF DESCRIPTION OF DRAWINGS
[0038] Figure 1 is a front structure diagram of the motor in the prior art;
[0039] Figure 2 is a structure diagram of the rotor baffle of the weight compensation in the prior art;
[0040] Figure 3 is a structure diagram of the rotor baffle of the weight compensation in the prior art;
[0041] Figure 4 is a structure diagram of the rotor baffle of the weight compensation in the prior art;
[0042] Figure 5 is Figure 4 is a partial enlarged view of part A in
[0043] Figure 6 is a structure diagram of the weighted and balanced rotor baffle according to the embodiment 2 of the utility model;
[0044] Figure 7 is a partial enlarged view of part B in Figure 6
[0045] Figure 8 is a structure diagram of the weighted and balanced rotor baffle according to the embodiment 3 of the utility model;
[0046] Figure 9 is a partial enlarged view of part C in Figure 8
[0047] Figure 10 is a three-dimensional structure diagram of the rotor baffle according to the embodiment 4 of the utility model.
[0048] The reference signs are shown as:
[0049] 1, rotor baffle; 11, front baffle; 12, rear baffle; 2, rotor shaft; 3, counterbore; 31, first counterbore; 32, second counterbore; 4, boss structure; 5, rib; 6, core punching sheet; 7, magnetic steel; 8, bearing position; 9, screw. DETAILED DESCRIPTION
[0050] The technical solutions in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, and is by no means any limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.
[0051] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.
[0052] The foregoing description, for purposes of explanation, sets forth specific values and arrangements of components and steps that are subject to many options. The intent is to be accurate in describing the principles and novel features of the application. Thus, although the application has been described with reference to specific embodiments thereof, it will be apparent to those of ordinary skill in the art that a number of changes can be made to the embodiments described without departing from the spirit and scope of the application. For example, the various features of the application can be combined in any combination, where possible. Accordingly, the scope of the application is to be construed as encompassing modifications and variations of the specific examples described herein, subject only to the conditions of the prior art.
[0053] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship are usually based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.
[0054] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the example term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative description used herein is interpreted accordingly.
[0055] In addition, it should be noted that the use of the words "first", "second" and the like to define parts of components is only for the convenience of distinguishing the corresponding parts of components, and the above words have no special meaning unless otherwise stated, therefore, it cannot be understood as a limitation on the scope of protection of the present application.
[0056] AsFigures 4-10 The utility model provides a rotor baffle assembly, it includes:
[0057] Rotor baffle 1 and weight structure are provided with counterbore 3 on rotor baffle 1, the counterbore 3 has axis, the axis of counterbore 3 is parallel with the axis of rotor baffle 1, along the axis direction of counterbore 3, the counterbore 3 is the hole structure with at least two cross-sectional areas, the counterbore 3 is at least two, at least two counterbores 3 are spaced apart in the circumferential direction of rotor baffle 1, and the weight structure is arranged in at least one counterbore 3 and / or the outer periphery of at least one counterbore 3.
[0058] The utility model discloses a rotor baffle is provided with counterbore, and the counterbore is the hole structure with at least two cross-sectional areas along its axis direction, can set up the weight structure in the counterbore and / or the outer periphery of counterbore, and forms the limiting of weight structure and prevents the outfall, improves the fixed limiting effect of weight structure, thus can set up the weight structure according to the need in the counterbore position of specific one or one or more circumferential positions, and the weight of weight structure can be adjusted, thereby reach the effective adjustment effect of rotor dynamic balance, and do not need to set up the threaded hole to pass through the screw mode condition dynamic balance, can avoid the threaded hole and increase the thickness of rotor baffle, avoid the situation that the overall size and weight of motor are relatively large, effectively solve the problem that the overall size and weight of motor are relatively large caused by the calibration mode of rotor dynamic balance in the prior art.
[0059] The existing all-in-one machine motor structure is as shown in Figure 1 It is composed of motor body and electric drive control. As shown in the figure, the electric drive will lengthen the axial size of the whole machine, so under the development of meeting performance and safety, the structure of the whole machine is compressed as much as possible, which not only can control the cost, but also can reduce the installation space in actual application. Under the premise of meeting the correction demand, a thinner rotor baffle is designed to maximize the space size.
[0060] The calibration of rotor dynamic balance will directly affect the vibration level of motor, such as Figure 1 As shown, the rotor is composed of core punching sheet 6, front baffle 11, rear baffle 12, magnetic steel 7 and rotor shaft 2, when calibrating, after the rotor shaft 2 is installed, it is supported by the two end bearing positions 8, and the balance is calibrated. The rotor baffle is generally designed as Figure 2 、 3 As shown, wherein Figure 2 It is a weight removal mode, Figure 3The weight adding mode is achieved by inserting balance cement or balance screw into the limiting hole designed on the baffle ring, at which time a higher size baffle needs to be designed, otherwise the balance screw cannot be installed, the cement cannot be better contacted, and the cement may be at risk of falling off in long-term application. Both of the two modes need higher size space for operation, and cannot meet the strict space size requirement.
[0061] The novel rotor baffle is developed, the thinnest thickness of the baffle can be designed as 2 thicknesses of punching sheets, the structure design of uneven punching sheets at both ends of the laminated pressure is met, and the requirement of dynamic balance correction is met. The correction of the novel baffle is achieved in the weight adding mode, the punching hole designed on the baffle meets the dynamic balance correction limiting and provides the bonding strength. The baffle is designed with a relatively thin wall thickness, can be realized through the stamping mode, and does not need secondary processing and material waste.
[0062] The unbalanced hole is designed according to the pole number of the rotor, the simplest one is that there is 1 balance hole or multiple balance holes per pole of the rotor. The balance holes are uniformly distributed, the number of balance holes per pole is equal under the premise of multiple holes, and are as uniformly distributed as possible on the pole arc width. The punching hole distribution circle is selected according to the actual correction amount. The material requires stamping and stretching but not punching off, and presents a divergent state after the hole is opened. The divergence is embodied in two ways of internal expansion and external expansion, and three states of internal expansion, external expansion and internal expansion+external expansion can be combined.
[0063] The rotor baffle is made thicker to ensure the structural strength of the rotor baffle, and the rotor baffle is also made thicker to ensure the thread installation strength of the existing weight adding mode (screw hole), the rotor balance counterweight is effectively completed, the axial thickness of the rotor baffle is reduced, the overall structure size is reduced, the weight is reduced, the weight adding structure of the utility model forms an effective limiting action compared with the structure of the straight hole cement, is not easy to fall off, and can ensure the balance calibration of the rotor.
[0064] In some embodiments,
[0065] From the direction of one axial end of the counterbore 3 to the other axial end, the counterbore 3 is a hole structure whose cross-sectional area increases, decreases, first increases and then decreases, or first decreases and then increases in sequence.
[0066] This is the preferred structure form of the hole expanding structure of the utility model, namely the hole structure of sequentially increasing, sequentially decreasing, first increasing and then decreasing or first decreasing and then increasing along the axial direction, which can effectively play the limiting action on the weight increasing structure (preferably the cement) of the inner periphery and the outer periphery, thereby realizing the firm rotor dynamic balance calibration without punching the threaded hole, the weight increasing structure is not easy to fall off, the rotor baffle does not need to be made very thick, and can be made very thin, so that the overall size of the motor is reduced, and the weight is reduced.
[0067] The rotor baffle structure thickness size is thinnest, can be designed as two iron core punching sheet sizes, the maximum compression space size, provides the possibility for the most reasonable and optimal structure design for the whole machine development; the extremely thin rotor baffle of the utility model, in addition to the weight reduction of the material itself and the cost reduction, the whole machine structure size is compressed, and the whole machine structure material consumption is also reduced, the rotor weight is reduced, the cost is controlled to be lower, the baffle is punched simply, the shape can be pressed at random, the production process is simpler, the practicality is high, and the processing cost is reduced; the rotor baffle is extremely thin, and the imbalance caused by the self weight can be reduced, so that the lower imbalance of the rotor is provided; the lower imbalance can most effectively improve the vibration of the whole machine, so that the noise is further improved, and the long-term mechanical damage, structure fatigue failure caused by vibration, and even further improvement of the chain damage and failure caused by the transmission of the adverse vibration to the downstream load through the transmission system are also improved; the rotor baffle is thinner, and the dynamic balance hole is realized in various ways through the divergent punching, so that the combined strength support of the weight calibration mode is provided, high strength combination is realized in the smallest space, and the long-term reliability of the weight calibration is ensured.
[0068] In some embodiments,
[0069] The hole expanding 3 includes a through hole structure penetrating from the axial one end surface of the rotor baffle 1 to the axial other end surface, namely a first hole expanding 31.
[0070] This is the first preferred structure form of the hole expanding of the utility model, namely the through hole structure penetrating from the axial one end surface of the rotor baffle to the axial other end surface, namely the first hole expanding, which can be the hole structure of sequentially increasing, sequentially decreasing, first increasing and then decreasing or first decreasing and then increasing along the axial direction, the weight increasing structure can be arranged in the hole to limit the weight increasing structure, the weight increasing structure is not easy to fall off, the axial thickness of the rotor baffle can be reduced, the overall size of the motor is reduced, and the weight is reduced.
[0071] In some embodiments,
[0072] The rotor baffle 1 is further provided with a boss structure 4 on one end surface in the axial direction, the boss structure 4 is arranged at the first counterbore 31, the inner periphery of the boss structure 4 forms a second counterbore 32, the inner periphery wall of the second counterbore 32 is connected with the inner periphery wall of the first counterbore 31, and the counterbore 3 comprises the first counterbore 31 and the second counterbore 32.
[0073] The rotor baffle 1 is further provided with a boss structure 4 on one end surface in the axial direction, the boss structure 4 is arranged at the first counterbore 31, the inner periphery of the boss structure 4 forms a second counterbore 32, the inner periphery wall of the second counterbore 32 is connected with the inner periphery wall of the first counterbore 31, and the counterbore 3 comprises the first counterbore 31 and the second counterbore 32.
[0074] In some embodiments,
[0075] The first counterbore 31 and / or the second counterbore 32 can be provided with the weight structure, and the outer periphery of the boss structure 4 can be provided with the weight structure.
[0076] The rotor baffle 1 is further provided with a boss structure 4 on one end surface in the axial direction, the boss structure 4 is arranged at the first counterbore 31, the inner periphery of the boss structure 4 forms a second counterbore 32, the inner periphery wall of the second counterbore 32 is connected with the inner periphery wall of the first counterbore 31, and the counterbore 3 comprises the first counterbore 31 and the second counterbore 32.
[0077] As Figures 6-7 In some embodiments,
[0078] When the cross-sectional area of the counterbore 3 gradually increases from one end to the other end in the axial direction, from the axial end of the first counterbore 31 away from the second counterbore 32 to the axial end of the second counterbore 32 away from the first counterbore 31, the whole hole structure connected by the first counterbore 31 and the second counterbore 32 is a structure with gradually increasing cross-sectional area.
[0079] This is the preferred structure of the counterbore of the embodiment 2 of the utility model, that is, the cross-sectional area of the hole gradually increases from the first counterbore to the second counterbore, the weight structure can be arranged inside the first and second counterbores, especially the weight structure can be arranged on the outer periphery of the boss structure, which can effectively limit the weight structure and prevent it from falling off, ensure the calibration effect of the rotor dynamic balance, reduce the thickness of the rotor baffle and the size and weight of the motor.
[0080] As Figures 6-7As shown, the hole expanding and opening of the utility model adopts the mode of outward expansion, the space behind the stamping boss is small outside and large inside, the implementation form of outward expansion can be ensured through die tooling, linear outward expansion or circular arc outward expansion is realized, wherein the circular arc outward expansion is reasonably designed, and larger external mounting space and bonding strength can be provided.
[0081] The outer circle of the outermost end of the boss after stretching is formed with the end face of the baffle at an acute angle. The heavy cement installation considers filling in the cone space and the two sides outside. The double limiting increases the cement bonding strength, and the inner and outer cement installation spaces provide greater imbalance correction realizability, reduce the correction times and calibration positions. The stamping and stretching forming allows burrs and cracks to appear, and a regular tooth-shaped notch can be formed through pre-punching and subsequent limiting stamping when necessary, thereby improving the bonding strength and limiting.
[0082] As shown in the drawings, Figures 4-5 In some embodiments,
[0083] When the cross-sectional area of the hole expanding 3 decreases in turn from the axial one end to the axial other end, from the axial one end of the first hole expanding 31 away from the second hole expanding 32 to the axial one end of the second hole expanding 32 away from the first hole expanding 31, the whole hole structure connected by the first hole expanding 31 and the second hole expanding 32 is a structure with gradually decreasing cross-sectional area.
[0084] This is the preferred structure form of the hole expanding of the embodiment 1 of the utility model, that is, the hole cross-sectional area is a hole structure with gradually decreasing cross-sectional area from the first hole expanding to the second hole expanding, the heavy structure can be arranged on the outer periphery of the boss structure, especially the heavy structure can be arranged inside the first and second hole expandings, which can effectively limit the heavy structure and prevent it from falling off, ensure the calibration effect on the rotor dynamic balance, reduce the thickness of the rotor baffle, and reduce the size and weight of the motor.
[0085] As shown in the drawings, Figures 4-5 The hole expanding and opening of the utility model adopts the mode of inward expansion, a boss is formed by stamping, a cone space is formed inside the boss, the space is large and the opening is small, so that a trapezoidal shape is formed, and the cement installation considers filling in the cone space. The cone cutout allows burrs and cracks, and after filling and air drying, the burrs and cracks formed by stamping and forming increase the cement bonding and prevent loosening and falling off. A process can be added during stamping to pre-stamp positioning, form a uniformly distributed knife edge, and form a tooth-shaped cone space with regular punching and stretching forming and large connection strength, thereby further increasing the cement assembly bonding force.
[0086] As shown in the drawings, Figures 8-9 In some embodiments,
[0087] When the cross-sectional area of the hole 3 decreases in turn from the axial one end to the axial other end, the overall hole structure connected by the first hole 31 and the second hole 32 is a structure that the cross-sectional area gradually increases first and then gradually decreases from the axial one end of the first hole 31 away from the second hole 32 to the axial one end of the second hole 32 away from the first hole 31.
[0088] This is the preferred structure of the hole of the embodiment 3 of the utility model, that is, the hole cross-sectional area gradually increases first and then gradually decreases from the first hole to the second hole, which can especially set the weight structure in the inside of the first and second holes, and especially can set the weight structure on the outer periphery of the boss structure, which can reliably limit the weight structure, maximally prevent the weight structure from falling off, ensure the calibration effect on the rotor dynamic balance, reduce the thickness of the rotor baffle, and reduce the size and weight of the motor.
[0089] As shown in Figures 8-9 In some embodiments,
[0090] When the cross-sectional area of the hole 3 decreases in turn from the axial one end to the axial other end, the overall hole structure connected by the first hole 31 and the second hole 32 is a structure that the cross-sectional area gradually increases first and then gradually decreases from the axial one end of the first hole 31 away from the second hole 32 to the axial one end of the second hole 32 away from the first hole 31.
[0091] This is the preferred structure of the hole of the embodiment 3 of the utility model, that is, the hole cross-sectional area gradually increases first and then gradually decreases from the first hole to the second hole, which can especially set the weight structure in the inside of the first and second holes, and especially can set the weight structure on the outer periphery of the boss structure, which can reliably limit the weight structure, maximally prevent the weight structure from falling off, ensure the calibration effect on the rotor dynamic balance, reduce the thickness of the rotor baffle, and reduce the size and weight of the motor.
[0092] As shown in Figures 8-9 As shown in the utility model, the hole opening mode combines the two modes of internal expansion and external expansion, the mold needs one stamping and one back-falling, the inner size of the stretched protruding space changes from large to small and then to large, the first half of the internal space changes from large to small and forms a space limit by itself, the appearance and the size of the inner cavity form a limit after the cement filling and air drying, and the cement is not easy to fall off. At the same time, the small-to-large space satisfies the realization of the external cement filling, forms an acute angle space with the end face of the baffle, limits the cement while increasing the amount of cement installation, further improves the correction amount of the unbalance, reduces the correction times and correction positions. In addition, the weight structure can also be set on the outer periphery of the boss structure. Figure 7The tooth-shaped notch is formed by stamping, further improves the combination, and guarantees the service life and reliability of the motor type under more complex environments such as high temperature and high humidity.
[0093] In some embodiments,
[0094] The boss structure 4 is formed by stamping, that is, the first counterbore 31 is formed first by stamping a punch from the other axial end of the rotor baffle 1 towards the rotor baffle 1, and then the second counterbore 32 and the boss structure 4 are formed.
[0095] This is the preferred forming mode and forming process of the boss structure of the utility model, that is, the flanging is formed on the side away from the rotor core by stamping, thereby forming the boss structure, which is effective for being able to set the weight structure on the inner periphery and the outer periphery, plays a limiting role on the weight structure, guarantees the calibration effect on the rotor dynamic balance, reduces the thickness of the rotor baffle, and reduces the size and weight of the motor.
[0096] The utility model discloses a rotor baffle, and the assembly mode is consistent with the prior structure mode, and the difference lies in that the structure is thinner, and the combination strength requirement is met at the same time.
[0097] The new rotor baffle of the utility model meets the structure development low thickness size, realizes the promotion of the combination strength by the stamping mode, does not need to guarantee the combination strength by increasing the installation size space mode, and simultaneously avoids the unbalance amount caused by the weight of the thinner and lighter rotor baffle, reduces material consumption, and makes the cost more advantageous.
[0098] The new rotor baffle is basically consistent with the original structure mode and the calibration mode, does not need to invest in new production processes and tooling equipment, and is high in realizability. Figures 4-10 The stamping and stretching hole does not have special requirements, allows cracking and multiple cracking, and the verification instruction shows that the cracking balance hole is easier to stick to balance mortar.
[0099] In some embodiments,
[0100] The weight structure is a mortar structure, can be bonded to the inner wall of the counterbore 3 and the outer peripheral wall of the boss structure 4, and can be fixed at the bonded position after being dried in contact with air.
[0101] This is the preferred structure form of the weight structure of the utility model, which is selected as a mortar structure, can be arranged on the inner periphery and / or outer periphery of the counterbore to be calibrated, and is hardened and adhered to the inner periphery or outer periphery of the counterbore after being dried in contact with air, and can limit the mortar through the counterbore structure, avoid the mortar from falling off caused by the straight hole structure, guarantee the calibration effect on the rotor dynamic balance, reduce the thickness of the rotor baffle, and reduce the size and weight of the motor.
[0102] The rotor baffle is simple in structure size, and less in material, thereby reducing processing cost of finished product production and material cost. The rotor baffle is formed by stamping, and does not need secondary size processing. The stamping and secondary forming are stacked, the combination area and the combination strength of the cement and the baffle are increased, and the reliability of long-term combination is ensured. Meanwhile, the size of the baffle can be compressed, the size of the whole machine is further compressed, a larger adjustment space is provided for matching installation, and the cost investment of the structural member is reduced.
[0103] The stretching dynamic balance hole has various structures: an inner expansion type, an outer expansion type and an (inner expansion+outer expansion) type.
[0104] 1) The inner expansion type fills the balance cement in the hole, and the hole mouth contraction can prevent the cement from being thrown out under the action of centrifugal force, thereby improving operation reliability; meanwhile, the bottom is large and the mouth is small, and more balance cement can be filled, thereby increasing the balance amount.
[0105] 2) The outer expansion type balance hole simultaneously sticks the balance cement to the outer circle of the balance hole. Figure 7 It is a 3D schematic view, and represents a hole wall cracking state. Of course, the cracking can be specially designed. The outer circle can increase the balance angle of the cement, and the dynamic balance can be more accurately performed.
[0106] 3) The (inner expansion+outer expansion) type combines the advantages of the two types, but the baffle stamping needs an additional process.
[0107] In some embodiments,
[0108] As Figure 10 The axial end face of the rotor baffle 1 is further provided with a rib 5 protruding outward, the rib 5 is at least two in the circumferential direction, and the weight structure is arranged between the adjacent ribs 5.
[0109] This is a preferred structure form of the embodiment 4 of the utility model, the rib is further arranged on the axial end face of the rotor baffle (preferably the side away from the rotor core), and the weight structure is arranged between the two adjacent ribs, which can further play the effect of rotor dynamic balance calibration, and can further reduce the axial thickness of the rotor baffle and the size and weight of the motor.
[0110] The utility model further provides a motor which comprises the rotor baffle assembly.
[0111] The utility model discloses a rotor baffle, which is characterized by the following: the rotor baffle is provided with an inner and / or outer hole (the inner hole is gradually reduced in cross-sectional area from the first hole to the second hole, and the outer hole is gradually increased in cross-sectional area from the first hole to the second hole), and a counterweight material is arranged on the inner and / or outer periphery of the rotor baffle.
[0112] The utility model has the advantages of the following:
[0113] 1. The rotor baffle can greatly compress the size space of the baffle while meeting the requirements of dynamic balance correction.
[0114] 2. The rotor baffle is formed by stamping a raw plate, and thus, the rotor baffle can be manufactured without casting and processing, and the mold is simple and the production and processing are simple.
[0115] 3. The baffle stamping hole does not need to be processed to remove burrs, blunt, etc., and the cut edge provides greater bonding force.
[0116] 4. The baffle stamping hole has one-time forming and two-time forming modes. The one-time forming adopts the inner expansion and outer expansion modes, the inner expansion mainly considers the hole correction, and the outer expansion mainly considers the hole correction. The two-time forming simultaneously realizes the inner expansion and outer expansion modes. The inner expansion and outer expansion can be realized by irregular surfaces such as bevels and curved surfaces, and the bonding force is further improved.
[0117] The utility model also provides a compressor, which comprises the motor.
[0118] 1. The hole expansion of the utility model can be designed according to the number of rotor poles to avoid the magnetic steel groove. The material is stretched to a bulging state by downward punching, and the size and precision requirements are not made, and the opening is allowed to release the pressure. The implementation is simpler, and the contact area and the limiting balance effect are improved.
[0119] 2. The outermost circle of the rotor baffle is punched, the inner volume is punched, a half-open pipe space is formed, the pipe is punched into a through hole respectively, and the limiting is formed. Advantage: dynamic balance correction is on the largest outer circle, and the unbalance amount is easier to correct.
[0120] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A rotor baffle assembly characterized by: Comprising: A rotor baffle (1) and a weight structure, the rotor baffle (1) is provided with a counterbore (3), the counterbore (3) has an axis, the axis of the counterbore (3) is parallel to the axis of the rotor baffle (1), along the direction of the axis of the counterbore (3), the counterbore (3) is a hole structure with at least two cross-sectional areas, the counterbore (3) is at least two, at least two counterbores (3) are arranged in the circumferential direction of the rotor baffle (1), at least one of the counterbores (3) and / or the outer periphery of at least one of the counterbores (3) is provided with the weight structure.
2. The rotor baffle assembly according to claim 1, wherein: From the direction of one end to the other end of the axis of the counterbore (3), the cross-sectional area of the counterbore (3) gradually increases, gradually decreases, first increases and then decreases, or first decreases and then increases.
3. The rotor baffle assembly according to claim 1 or 2, wherein: The counterbore (3) includes a through-hole structure from one end to the other end of the axis of the rotor baffle (1), that is, a first counterbore (31).
4. The rotor baffle assembly according to claim 3, wherein: A boss structure (4) is further arranged on one end surface of the rotor baffle (1), the boss structure (4) is arranged at the first counterbore (31), the inner periphery of the boss structure (4) forms a second counterbore (32), the inner wall of the second counterbore (32) is connected with the inner wall of the first counterbore (31), and the counterbore (3) includes the first counterbore (31) and the second counterbore (32).
5. The rotor baffle assembly according to claim 4, wherein: The weight structure can be arranged in the first counterbore (31) and / or the second counterbore (32), and the outer periphery of the boss structure (4) can be provided with the weight structure.
6. The rotor baffle assembly according to claim 4, wherein: When the cross-sectional area of the counterbore (3) gradually increases from one end to the other end of the axis, from the direction of one end of the first counterbore (31) away from the second counterbore (32) to the direction of one end of the second counterbore (32) away from the first counterbore (31), the overall hole structure connected by the first counterbore (31) and the second counterbore (32) is a structure with gradually increasing cross-sectional area.
7. The rotor baffle assembly according to claim 4, wherein: When the cross-sectional area of the counterbore (3) gradually decreases from one end to the other end of the axis, from the direction of one end of the first counterbore (31) away from the second counterbore (32) to the direction of one end of the second counterbore (32) away from the first counterbore (31), the overall hole structure connected by the first counterbore (31) and the second counterbore (32) is a structure with gradually decreasing cross-sectional area.
8. The rotor baffle assembly according to claim 4, wherein: When the cross-sectional area of the hole (3) decreases in sequence from the axial one end to the axial other end, the overall hole structure of the first hole (31) and the second hole (32) connected from the axial one end of the first hole (31) away from the second hole (32) to the axial one end of the second hole (32) away from the first hole (31) is a structure that gradually increases and then gradually decreases in cross-sectional area.
9. The rotor baffle assembly of claim 4, wherein: When the cross-sectional area of the hole (3) decreases in sequence from the axial one end to the axial other end, the overall hole structure of the first hole (31) and the second hole (32) connected from the axial one end of the first hole (31) away from the second hole (32) to the axial one end of the second hole (32) away from the first hole (31) is a structure that gradually decreases and then gradually increases in cross-sectional area.
10. The rotor baffle assembly of claim 4, wherein: The boss structure (4) is formed by stamping, that is, by stamping a punch from the axial other end of the rotor baffle (1) towards the rotor baffle (1), first forming the first hole (31), and finally forming the second hole (32) and the boss structure (4).
11. The rotor baffle assembly of claim 4, wherein: The weight structure is a cement structure bonded to the inner wall of the hole (3) and the outer peripheral wall of the boss structure (4), and the cement structure can be fixed at the bonded position after being air-dried in contact with air.
12. The rotor baffle assembly of claim 1, wherein: The axial end face of the rotor baffle (1) is also provided with a rib (5) protruding therefrom, the rib (5) is at least two arranged in the circumferential direction, and the weight structure can be arranged between adjacent ribs (5).
13. An electric machine characterized by: A rotor baffle assembly according to any one of claims 1-12.
14. A compressor characterized by: An electric machine according to claim 13.