Trapezoidal magnetic shoe insertion piece type rotor assembly of plastic package motor for air conditioner

Abstract

The utility model relates to the technical field of a rotor in a plastic package motor, and discloses a trapezoidal magnetic tile insertion piece type rotor assembly of a plastic package motor for an air conditioner, which comprises a rotating shaft, the outer part of the rotating shaft is connected with a rotor assembly in a sliding manner, the rotor assembly comprises a rotor iron core, a plurality of plastic package materials are arranged in the rotor iron core, and the plastic package materials are arranged in the rotor iron core. An inner surrounding iron core is fixedly connected inside the rotor iron core, a plurality of rivets are fixedly connected outside the rotor iron core, the outside of the rotor iron core is coated and connected with an adhesive, the outside of the adhesive is coated and connected with a magnetic shoe, and a plurality of trapezoidal magnetic shoe slots are formed inside the rotor iron core. According to the utility model, the plastic package material improves insulativity, structural stability and durability, enables a magnetic field in the motor to be uniformly distributed, and optimizes the performance of the motor in an omnibearing manner, thereby being beneficial to reducing vibration and noise during operation of the motor, and improving the performance and efficiency of the motor.

Description

Technical Field

[0001] This utility model relates to the field of rotor technology in encapsulated electric motors, and more particularly to a trapezoidal magnetic tile insert rotor assembly for an encapsulated electric motor used in air conditioners. Background Technology

[0002] In the development of modern air conditioners, as people's demands for cooling and heating efficiency, comfort, and energy consumption continue to increase, the performance optimization of the motor, as one of the core driving components of air conditioners, has become a key factor. Traditional motor rotor assemblies have gradually revealed some limitations in structure and performance, making it difficult to meet the growing demands for high efficiency, energy saving, and stable operation.

[0003] The encapsulated motor rotor assembly for air conditioners, featuring trapezoidal magnets, includes a rotor core, trapezoidal magnets, a shaft, and possibly counterweights. The rotor core is constructed from laminated silicon steel sheets, and the magnets are made of permanent magnet material. Its working principle involves the magnets generating a magnetic field that interacts with the rotating magnetic field of the stator, producing torque that is transmitted to the load via the shaft, thus enabling the motor to stably drive the air conditioner components.

[0004] In the prior art, some encapsulated motors in air conditioners use surface-mount rotors. Adhesive is applied between the rotor core and the magnet, and a fixing fixture is used to wait for the adhesive to cure. Due to the curing time, production is time-consuming and inconvenient. The rotor of the encapsulated air conditioner motor is a surface-mount rotor, and its magnet is a brittle material. The spatial structure also means that the magnet is easily bumped during production and transportation, causing the surface of the magnet to break or even the whole magnet to shatter. Surface-mount rotors are prone to insufficient bonding strength and may also experience magnet displacement. To address these issues, a trapezoidal magnet insert rotor assembly for encapsulated motors in air conditioners is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a trapezoidal magnet insert rotor assembly for a plastic-encapsulated motor for air conditioners. It aims to improve the problems of long production time, easy breakage of magnets, insufficient bonding strength, and easy displacement of surface-mounted rotors in plastic-encapsulated motors for air conditioners, which bring many inconveniences and hidden dangers to production and product quality.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A trapezoidal magnetic tile insert-type rotor assembly for a plastic-encapsulated motor for an air conditioner includes a rotating shaft, a rotor assembly slidably connected to the outside of the rotating shaft, a rotor assembly including a rotor core, a plurality of plastic encapsulating materials disposed inside the rotor core, an inner circumferential core fixedly connected inside the rotor core, a plurality of rivetings fixedly connected to the outside of the rotor core, an adhesive coating on the outside of the rotor core, and magnetic tiles coated on the outside of the adhesive.

[0008] As a further description of the above technical solution:

[0009] The rotor core has multiple trapezoidal magnetic tile slots inside, and multiple core rivets inside.

[0010] As a further description of the above technical solution:

[0011] The rotor core has multiple peripheral disconnect slots inside, and an inner circular hole inside.

[0012] As a further description of the above technical solution:

[0013] The inner core is slidably connected to a rotating shaft, and the rotor core is slidably connected to multiple riveted components.

[0014] This utility model has the following beneficial effects:

[0015] In this invention, trapezoidal magnetic tile slots are opened along the outer circumference of the rotor core. The outer periphery is open and the inner circumference is small. The magnetic tiles are inserted in opposite directions and are integrally encapsulated with plastic sealant. The pins are used for positioning. The trapezoidal magnetic tiles reduce the magnetic gap and increase torque stability. The plastic sealant improves insulation, structural stability and durability. It also makes the magnetic field distribution in the motor uniform and optimizes the motor performance in all aspects. This helps to reduce vibration and noise during motor operation and improve the performance and efficiency of the motor. Attached Figure Description

[0016] Figure 1 This is a perspective view of a trapezoidal magnet insert rotor assembly for a plastic-encapsulated motor used in an air conditioner, as proposed in this utility model.

[0017] Figure 2 This is a schematic diagram of the rotor core of a trapezoidal magnetic tile insert rotor assembly for a plastic-encapsulated motor for an air conditioner, as proposed in this utility model.

[0018] Figure 3 This is a schematic diagram of the encapsulating material for a trapezoidal magnet insert rotor assembly of an encapsulated motor for an air conditioner, as proposed in this utility model.

[0019] Figure 4 This is a schematic diagram of the core rivet of a trapezoidal magnetic tile insert rotor assembly for a plastic-encapsulated motor used in an air conditioner, as proposed in this utility model.

[0020] Legend:

[0021] 1. Shaft; 2. Rotor core; 3. Trapezoidal magnet slot; 4. Core rivet; 5. Outer disengagement slot; 6. Molding material; 7. Inner core; 8. Inner hole; 9. Adhesive; 10. Magnet; 11. Riveting. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Reference Figure 1 , Figure 2 This utility model provides an embodiment of a trapezoidal magnetic tile insert-type rotor assembly for a plastic-encapsulated motor used in air conditioners. The assembly includes a rotating shaft 1, which serves as the core rotational support for the entire rotor assembly. The shaft 1 provides a stable rotation axis for components such as the rotor core 2 and the inner core 7, ensuring the rotor maintains a precise position and orientation during rotation, thereby guaranteeing the stability and accuracy of the motor's output power. Furthermore, the surface smoothness and dimensional accuracy of the shaft 1 are strictly controlled, forming a good sliding connection with the inner core 7, effectively reducing frictional resistance, lowering energy loss, and improving the motor's operating efficiency. The rotor assembly, including the rotor core 2, is externally slidably connected to the shaft 1. The rotor core 2 is one of the key components for the motor's electromagnetic conversion. Multiple trapezoidal magnetic tile slots 3 inside precisely position and fix the magnetic tiles 10, enabling the magnetic field generated by the magnetic tiles to interact efficiently with the stator magnetic field, generating electromagnetic torque to drive the rotor to rotate, thereby realizing the conversion of electrical energy into mechanical energy and directly affecting the motor's power output performance. Multiple iron core rivets 4 greatly enhance the structural stability of the rotor iron core 2 itself. When the motor is running, facing a complex mechanical environment, the rotor iron core 2 is equipped with multiple plastic sealants 6. The plastic sealants 6 can also play a certain role in shock absorption and noise reduction, absorbing and buffering the vibration and noise generated during motor operation, improving the smoothness and comfort of motor operation, creating a relatively quiet operating environment for the air conditioner, and enhancing the user experience.

[0024] The rotor core 2 is internally fixedly connected to an inner core 7, which tightly surrounds the outside of the rotating shaft 1, forming a high-precision sliding fit with the shaft 1. This provides precise positioning and stable support for the rotor core 2, ensuring that it maintains good concentricity during rotation, reducing unbalanced forces and vibrations caused by eccentricity, thereby improving the motor's operational stability and reliability, and reducing noise and wear. The rotor core 2 is externally fixedly connected by multiple riveting points 11, and coated with an adhesive 9. The adhesive 9, applied between the rotor core 2 and the magnetic tile 10, plays a crucial role in connection and performance optimization. Firstly, it fills the microscopic unevenness on the surfaces of the rotor core 2 and the magnetic tile 10, enabling close contact, thereby increasing magnetic permeability, enhancing the transmission efficiency of the magnetic field between them, optimizing the motor's electromagnetic performance, and improving the motor's output power and efficiency. The adhesive 9 is externally coated with a magnetic tile 10. The magnetic tile 10 can ensure that the motor can operate stably under different load conditions, meet the various functional requirements of the air conditioner such as cooling, heating and fan speed regulation, and improve the energy utilization rate of the motor to achieve the goal of energy saving and emission reduction.

[0025] Reference Figure 3 , Figure 4 The rotor core 2 has multiple trapezoidal magnetic tile slots 3 inside. The unique trapezoidal design of these slots is designed to achieve a tight and stable fit with the magnetic tiles 10. This shape precisely limits the position of the magnetic tiles 10, preventing displacement, loosening, or detachment during motor operation, ensuring the uniformity and stability of the magnetic field, and thus ensuring a smooth and reliable output torque for the motor. The rotor core 2 also has multiple core rivets 4 inside. These rivets play a crucial reinforcing role in the complex mechanical environment of motor operation. When the motor rotates at high speed, the rotor core 2 is subjected to enormous centrifugal force, which can cause the core to expand outwards or even crack. The core rivets 4, by tightly connecting the various parts of the core together to form a unified load-bearing structure, effectively resist the centrifugal force and prevent damage such as cracks or delamination.

[0026] Reference Figures 2 to 4The rotor core 2 has multiple peripheral disconnect slots 5 inside. These slots play an important role in optimizing the magnetic circuit distribution inside the motor. By properly setting the peripheral disconnect slots 5, the magnetic flux distribution in the core can be guided to be more uniform and reasonable, reducing the occurrence of local magnetic saturation, reducing hysteresis loss, and improving the effective utilization rate of magnetic energy, thereby improving the efficiency of the motor, reducing energy waste, and achieving energy saving. The rotor core 2 also has an inner circular hole 8 inside. The inner circular hole 8, located at the center of the rotor core 2, mainly provides a precise installation positioning reference and rotation space for the shaft 1. The strict control of its dimensional accuracy and surface roughness ensures that the shaft 1 can be smoothly inserted and maintain a high degree of coaxiality with the rotor core 2.

[0027] This high-precision fit not only reduces friction and wear between the shaft 1 and the inner hole 8, extending their service life, but also helps reduce noise and vibration during motor operation, improving the smoothness and reliability of motor operation. The shaft 1 is internally slidably connected to the inner core 7, and multiple riveting 11s are internally slidably connected to the rotor core 2. These multiple riveting 11 structures distributed on the outside of the rotor core 2 are of great significance in enhancing the overall strength and stability of the rotor core 2. During motor operation, the rotor core 2 is subjected to various complex forces, such as the powerful centrifugal force generated by high-speed rotation, the effect of electromagnetic forces, and the impact force generated by vibration.

[0028] Working principle: Trapezoidal magnetic tile slots 3 are opened along the outer circumference inside the rotor core 2. To avoid magnetic leakage, the outer perimeter of slot 5 is disconnected, and the inner circumference is made as small as possible. When inserting the magnetic tiles 10, they are inserted relative to each other at the same level. The rotor core 2 and magnetic tiles 10 are integrally encapsulated with molding compound 6. The ejector pins in the molding compound 6 determine the relative position of the magnetic tiles 10 and the rotor core 2. The trapezoidal shape of the magnetic tiles 10 helps to reduce the magnetic gap between the magnets and the stator, thereby increasing torque and stability. The molding compound 6 improves the insulation performance of the rotor core 2. The trapezoidal shape of the magnetic tiles 10 helps to reduce the magnetic gap between the magnets and the stator. The reduced magnetic gap between the magnets and the stator increases torque and stability, enhancing structural stability and durability. Trapezoidal magnetic tile slots 3 are formed along the outer circumference inside the rotor core 2. The magnetic tiles 10 are encapsulated within the rotor core 2, creating a more uniform magnetic field distribution within the motor. This helps reduce vibration and noise during motor operation, improving performance and efficiency. It precisely reduces the magnetic gap between the magnets and the stator, strengthens magnetic field coupling, reduces magnetic flux loss, and increases torque output, making the motor more powerful in driving loads and responding more quickly to changes in operating conditions, ensuring efficient operation. Simultaneously, a stable and uniform magnetic field reduces vibration and noise, optimizes operating conditions, improves efficiency and reliability, meets diverse needs, and enhances the motor's practical value and market prospects.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A trapezoidal magnet insert rotor assembly for a plastic-encapsulated motor in an air conditioner, comprising a rotating shaft (1), characterized in that: The rotor assembly is slidably connected to the outside of the rotating shaft (1). The rotor assembly includes a rotor core (2). Multiple plastic sealants (6) are disposed inside the rotor core (2). An inner core (7) is fixedly connected inside the rotor core (2). Multiple rivets (11) are fixedly connected to the outside of the rotor core (2). An adhesive (9) is coated and connected to the outside of the rotor core (2). A magnetic tile (10) is coated and connected to the outside of the adhesive (9).

2. The trapezoidal magnet insert rotor assembly for a plastic-encapsulated motor for an air conditioner according to claim 1, characterized in that: The rotor core (2) has multiple trapezoidal magnetic tile slots (3) inside, and multiple core rivets (4) inside.

3. The trapezoidal magnet insert rotor assembly for a plastic-encapsulated motor for an air conditioner according to claim 1, characterized in that: The rotor core (2) has multiple peripheral disconnect slots (5) inside, and an inner circular hole (8) inside.

4. The trapezoidal magnet insert rotor assembly of a plastic-encapsulated motor for an air conditioner according to claim 1, characterized in that: The inner core (7) is slidably connected to a rotating shaft (1), and the rotor core (2) is slidably connected to multiple riveting devices (11).

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