A compressor motor

Abstract

The utility model relates to a compressor motor technical field, specifically is a kind of compressor motor. It includes shell and the stator assembly, rotor assembly, pivot being arranged in shell, stator assembly contains stator yoke and multiple tooth parts for winding, the upper end surface of stator yoke is connected with upper framework, the lower end surface of stator yoke is connected with lower framework, and the outer circumferential surface of upper framework is provided with wiring slot, and upper framework outer sleeve is provided with upper cover;Lower framework outer sleeve is provided with lower cover, and lower cover is provided with plastic shell for three-phase line outlet wire;The lower end surface in shell is provided with annular projection for the limiting ring of pivot, and annular projection outer wall surface and shell inner wall surface form annular cavity, and annular cavity is provided with support piece compatible with plastic shell. By the above technical scheme, the utility model solves the problem that the space in shell cannot be fully utilized, and it is difficult to adapt to the problem of compact design requirement.

Description

Technical Field

[0001] This utility model relates to the field of compressor motor technology, specifically a compressor motor. Background Technology

[0002] In the field of compressor motors, the structural design of the stator assembly must strictly adapt to the space constraints of the customer's housing. Currently, most existing motor stators use upper frame wiring, but this solution has significant limitations in space-constrained scenarios. From a structural dimension perspective, the upper frame needs to integrate both the enameled wire guide structure and the three-phase lead-out structure. The enameled wire guide structure needs to maintain a minimum height of 12mm to ensure smooth conductor arrangement and insulation protection. After adding the three-phase lead-out structure, the overall height of the upper frame far exceeds the reserved space of some customer housings, resulting in the stator assembly being unable to be assembled normally and insufficient compatibility.

[0003] From the perspective of wiring scheme adaptability, if the industry-common star connection scheme is adopted, due to the structural characteristics of the stator winding star connection, a parallel line will inevitably be generated at the end of each phase winding to connect. The height of the parallel line needs to be at least 3-5mm, which further occupies the limited space inside the casing and is difficult to adapt to the compact design requirements.

[0004] Furthermore, the lower end face inside the compressor motor housing is usually provided with an annular protrusion for axial positioning of the shaft. An annular cavity is formed between the outer wall of the annular protrusion and the inner wall of the housing. The upper frame wires out, and the annular cavity cannot be fully utilized. Utility Model Content

[0005] In order to solve the problems in related technologies, this utility model provides a compressor motor. This device solves the problem of not being able to fully utilize the space inside the housing and being difficult to adapt to the needs of compact design.

[0006] To solve the above problems, the following technical solutions are provided: This utility model discloses a compressor motor comprising a housing and a stator assembly, a rotor assembly, and a rotating shaft disposed within the housing. The stator assembly includes a stator yoke and multiple teeth for winding. An upper frame is connected to the upper end face of the stator yoke, and a lower frame is connected to the lower end face of the stator yoke. A wiring groove is provided on the outer peripheral surface of the upper frame, and an upper cover is fitted over the upper frame. A lower cover is fitted over the lower frame, and a plastic shell for mounting the three-phase wire outlet is provided on the lower cover. An annular protrusion for limiting the rotating shaft is provided on the lower end face inside the housing, and an annular cavity is formed between the outer wall of the annular protrusion and the inner wall of the housing. The plastic shell is at least partially accommodated within the annular cavity, and a support member adapted to the plastic shell is provided within the annular cavity.

[0007] The above solution involves setting a plastic shell on the lower cover and transferring the three-phase line output structure to the lower side, which is housed in an annular cavity. This fully utilizes the annular cavity formed by the lower end face of the housing and the unused space inside the housing, avoiding the additional occupation of the effective space inside the housing by the output structure. This solution can meet the customer's stringent requirements for housing space and significantly improve the assembly compatibility of the motor with compact models.

[0008] The annular protrusion on the lower end face of the housing limits the rotation shaft. By setting up a support component, a stable support is provided for the lower cover and plastic shell, preventing the three-phase line outlet structure from shifting due to vibration. Furthermore, the support component, the annular protrusion, and the housing form a cooperative support structure, which can indirectly enhance the connection stability between the lower frame, the lower cover, and the housing, reduce the radial sway of the stator assembly during motor operation, and improve the stability of motor operation.

[0009] The fixed connection between the upper and lower frame and the stator yoke, along with the covering design of the upper and lower covers, allows the winding wires to be arranged in an orderly manner through the wiring slots of the upper frame, avoiding wire chaos or wear and tear, which helps to extend the service life of the motor.

[0010] The lower cover is provided with at least one cable outlet hole. The plastic shell is hollow and has a cable passage hole on its side end face. The upper end face of the plastic shell is provided with a terminal post, which communicates with the cable passage hole.

[0011] By adopting the above solution, the cable outlet hole of the lower cover and the cable passage hole and terminal block of the plastic shell form a through cable outlet channel, allowing the corner connection cable to be led out centrally through the lower cover; and the integrated coverage of the cable passage hole and terminal block by the plastic shell can effectively block external dust, while avoiding damage to the wiring parts due to mechanical collision, solving the problem of line protection when the cable exits from the lower frame, and improving the reliability of motor operation.

[0012] An annular plate arranged vertically is provided on the inner wall of the lower cover located on one side of the outlet hole. A wire baffle plate is provided on the annular plate facing the outlet hole. The wire baffle plate is L-shaped.

[0013] The above solution uses a wire baffle to limit the wires leading out of the outlet hole, preventing the wires from moving or shifting freely inside the casing, ensuring that the wire routing is compact and orderly, and further adapting to the limited space of the customer's casing.

[0014] The upper surface of the upper cover is provided with several heat dissipation holes.

[0015] The above solution accelerates airflow inside the stator assembly by setting heat dissipation holes, which promptly dissipates the heat generated during winding operation, avoids motor performance degradation due to excessive temperature in the confined space, and ensures long-term stable operation of the motor in a compact structure.

[0016] Both the upper and lower frame outer walls are provided with locking blocks at the ends away from the stator yoke, and both the upper and lower cover inner walls are provided with locking grooves that match the locking blocks.

[0017] By adopting the above solution, the upper and lower frames are positioned and fixed to the upper and lower covers respectively by the locking blocks on the outer wall and the locking grooves on the inner wall of the upper and lower covers. No additional fasteners are required, and quick disassembly and assembly are possible, which improves production efficiency. At the same time, the locking structure can form a stable mechanical connection, preventing the covers from loosening or shifting due to vibration during motor operation.

[0018] Both the upper and lower skeletons have protrusions on their end faces near the stator yoke, and the stator yoke has grooves that match the protrusions. Both the upper and lower skeletons are fixedly connected to the stator yoke.

[0019] By adopting the above scheme, the upper and lower skeletons are precisely positioned and fixedly connected to the stator yoke through the cooperation of the protrusions on the end faces and the grooves of the stator yoke. This avoids displacement of the skeletons due to electromagnetic vibration or mechanical impact during motor operation and ensures the positional stability of the winding routing and output structure.

[0020] The three-phase windings of the stator assembly are connected in a delta configuration, i.e., a delta connection.

[0021] The above solution has the following advantages: 1. This utility model's compressor motor, by transferring the three-phase wire outlet structure to one side of the lower frame, can fully utilize the annular cavity formed by the lower end face of the housing, utilizing the unused space within the housing and avoiding the additional space occupied by the outlet structure. This adapts to customers' stringent requirements for housing space and significantly improves the assembly compatibility of the motor with compact models. The annular protrusion on the lower end face of the housing limits the rotation shaft, and the support component provides stable support for the lower cover and plastic shell, preventing displacement of the three-phase wire outlet structure due to vibration. Furthermore, the support component, the annular protrusion, and the housing form a collaborative support structure, indirectly enhancing the connection stability of the lower frame, lower cover, and housing, reducing radial sway of the stator assembly during motor operation. The fixed connection between the upper frame, lower frame, and stator yoke, combined with the covering design of the upper and lower covers, allows the winding wires to be arranged orderly through the upper frame wiring slots, avoiding wire chaos or wear, which helps improve the motor's operational stability and extend its service life.

[0022] 2. The cable outlet hole of the lower cover and the cable passage hole and terminal of the plastic shell form a through cable outlet channel, allowing the corner connection cable to be led out centrally through the lower cover; and the integrated coverage of the cable passage hole and terminal of the plastic shell can effectively block external dust, while avoiding damage to the wiring parts due to mechanical collision, solving the problem of cable protection when the lower frame exits the cable and improving the reliability of motor operation. Attached Figure Description

[0023] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein: Figure 1 This is a schematic diagram of the stator assembly in a compressor motor. Figure 2 A bottom view of the stator assembly in a compressor motor; Figure 3 This is an exploded schematic diagram of the stator assembly in a compressor motor; Figure 4 for Figure 3 Enlarged structural diagram of section A in the middle; Figure 5 for Figure 3 Enlarged structural diagram of section B in the middle; Figure 6 This is a schematic diagram of the structure of a compressor motor; Figure 7 This is a cross-sectional view of the housing and stator assembly in a compressor motor; Explanation of reference numerals in the attached drawings: 1. Stator yoke; 2. Tooth; 3. Upper frame; 4. Lower frame; 5. Cable routing groove; 6. Upper cover; 7. Lower cover; 8. Plastic shell; 9. Cable outlet hole; 10. Cable through hole; 11. Terminal post; 12. Annular plate; 13. Cable baffle; 14. Heat dissipation hole; 15. Locking block; 16. Locking groove; 17. Protrusion; 18. Groove; 19. Housing; 20. Annular protrusion; 21. Annular cavity; 22. Support component. Detailed Implementation

[0024] 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.

[0025] In specific embodiment 1, such as Figures 1-7As shown, a compressor motor of this utility model includes a housing 19 and a stator assembly, a rotor assembly, and a rotating shaft (not shown in the figure) disposed within the housing 19. The stator assembly includes a stator yoke 1 and multiple teeth 2 for winding. The stator yoke 1 and the teeth 2 can be integrally formed or assembled separately. An upper frame 3 is connected to the upper end face of the stator yoke 1, and a lower frame 4 is connected to the lower end face of the stator yoke 1. A wiring groove 5 is provided on the outer peripheral surface of the upper frame 3, and an upper cover 6 is fitted over the upper frame 3. A lower cover 7 is fitted over the lower frame 4, and a plastic shell 8 for installing the three-phase wire outlet end is provided on the lower cover 7. By setting the outlet structure on the lower frame 4 and configuring the lower cover 7, combined with the design that the upper frame 3 only has a wiring groove 5, the outlet structure and the wiring structure are set at both ends of the stator axis.

[0026] An annular protrusion 20 for limiting the rotation shaft is provided on the lower end face inside the housing 19. An annular cavity 21 is formed between the outer wall of the annular protrusion 20 and the inner wall of the housing 19. A support member 22 adapted to the plastic shell is provided in the annular cavity 21. By transferring the three-phase wire outlet structure to the lower frame side, since the lower frame 4 faces the lower end face of the housing when the stator assembly is installed, the plastic shell 8 can be at least partially accommodated in the annular cavity 21. If the annular protrusion 20 is high, the plastic shell 8 can be completely accommodated in the annular cavity 21, and a part of the lower cover 7 can also be accommodated in the annular cavity 21. Therefore, the annular cavity 21 formed on the lower end face of the housing 19 can be fully utilized, making use of the idle space inside the housing, avoiding the additional occupation of the effective space inside the housing by the outlet structure, which can meet the customer's strict requirements for housing space and significantly improve the assembly compatibility of the motor and compact models. The annular protrusion 20 on the lower end face of the housing 19 limits the rotation shaft. The support member 22 is provided to provide stable support for the lower cover and plastic shell, preventing the three-phase line outlet structure from displacing due to vibration. The support member 22, the annular protrusion 20, and the housing 19 form a cooperative support structure, which can indirectly enhance the connection stability of the lower frame, the lower cover and the housing 19, reduce the radial sway of the stator assembly during motor operation, and improve the stability of motor operation.

[0027] The fixed connection between the upper frame 3, the lower frame 4 and the stator yoke 1, together with the covering design of the upper cover 6 and the lower cover 7, allows the winding lines to be arranged in an orderly manner through the wiring groove 5 of the upper frame 3, avoiding the lines from becoming messy or worn, and improving the structural stability and service life of the stator assembly.

[0028] like Figure 2As shown, the lower housing 7 has at least one cable outlet hole 9, and the plastic shell 8 is hollow. The side end face of the plastic shell 8 has a cable passage hole 10, and the upper end face of the plastic shell 8 has a terminal block 11, which communicates with the cable passage hole 10. The cable outlet hole 9 of the lower housing 7, the cable passage hole 10 of the plastic shell 8, and the terminal block 11 form a through-channel cable outlet. This allows the three-phase wires of the angle-connected circuit to be drawn out through the cable outlet hole 9 via the lower housing 7, then through the cable passage hole 10, and fixed inside the plastic shell 8. External connection wires are connected to the three-phase wires via the terminal block 11. Furthermore, the integrated coverage of the cable passage hole 10 and the terminal block 11 by the plastic shell 8 effectively blocks external dust and prevents damage to the connection points of the external connection wires and the three-phase wires due to mechanical collisions. This solves the problem of wire protection when the lower frame 4 exits, improving the reliability of motor operation. A vertically arranged annular plate 12 is provided on the radial inner wall of the lower cover 7 located on one side of the cable outlet hole 9. A cable baffle 13 is provided on the annular plate 12 facing the cable outlet hole 9. The cable baffle 13 is L-shaped, thereby limiting the line leading out from the cable outlet hole 9, preventing the line from shaking or deviating randomly inside the cover, ensuring that the line route is compact and orderly, and further adapting to the narrow space constraints of the customer's cover.

[0029] like Figure 4 As shown, both the upper frame 3 and the lower frame 4 have protrusions 17 on their end faces near the stator yoke 1, and the stator yoke 1 has grooves 18 that fit the protrusions 17. Both the upper frame 3 and the lower frame 4 are fixedly connected to the stator yoke 1. The upper frame 3 and the lower frame 4 achieve precise positioning and fixed connection with the stator yoke 1 through the cooperation of the protrusions 17 on their end faces and the grooves 18 on the stator yoke 1. This prevents the frames from shifting due to electromagnetic vibration or mechanical impact during motor operation, ensuring the positional stability of the winding routing and output structure.

[0030] like Figure 5 As shown, both the upper frame 3 and the lower frame 4 have locking blocks 15 at the ends of their outer walls away from the stator yoke 1, and both the upper cover 6 and the lower cover 7 have slots 16 on their inner walls that are compatible with the locking blocks 15. The upper frame 3 and the lower frame 4 are positioned and fixed to the upper cover 6 and the lower cover 7 respectively by the locking blocks 15 on their outer walls engaging with the slots 16 on the inner walls of the upper cover 6 and the lower cover 7. No additional fasteners are required, allowing for quick assembly and disassembly, thus improving production efficiency. Simultaneously, the locking structure forms a stable mechanical connection, preventing the covers from loosening or shifting due to vibration during motor operation.

[0031] In a specific embodiment 2, such as Figure 1 As shown, the difference between this embodiment and embodiment 1 is that the upper end face of the upper cover 6 in this embodiment is provided with a number of heat dissipation holes 14 to accelerate the air circulation inside the stator assembly, dissipate the heat generated when the winding is working in time, avoid the motor performance degradation caused by excessive temperature in the sealed space, and ensure the long-term stable operation of the motor in a compact structure.

[0032] In scenarios where customer housing space is limited, the use of a corner connection scheme combined with the lower frame 4 for wiring can avoid the size limitations of the upper frame 3 for wiring and eliminate the additional space occupied by the parallel structure in the star connection scheme, thereby precisely meeting the customer's stringent requirements for the overall size of the motor. By setting a lower cover 7 outside the lower frame 4 and integrating a plastic shell 8, the annular cavity 21 formed by the lower end face of the shell 19 is fully utilized, further reducing the space occupied inside the housing. At the same time, the upper cover 6 and the lower cover 7 protect the upper frame 3 and the lower frame 4, effectively ensuring the safety of the corner connection circuit, thereby improving the stability and protection of the wiring.

[0033] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise specified and limited, it should be noted that the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components, and can be direct connections or indirect connections through an intermediate medium. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0034] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation. For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all implementation methods here, and any obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A compressor motor, comprising a housing (19) and a stator assembly, a rotor assembly, and a shaft disposed within the housing (19), said stator assembly including a stator yoke (1) and a plurality of teeth (2) for winding, characterized in that, The upper end face of the stator yoke (1) is connected to the upper frame (3), and the lower end face of the stator yoke (1) is connected to the lower frame (4). The outer peripheral surface of the upper frame (3) is provided with a wiring groove (5), and the upper frame (3) is covered with an upper cover (6). The lower frame (4) is covered with a lower cover (7), and the lower cover (7) is provided with a plastic shell (8) for installing the three-phase line outlet. The lower end face inside the housing (19) is provided with an annular protrusion (20) for limiting the rotation shaft. The outer wall of the annular protrusion (20) and the inner wall of the housing (19) form an annular cavity (21), and the plastic shell (8) is at least partially accommodated in the annular cavity (21).

2. A compressor motor as described in claim 1, characterized in that, The annular cavity (21) is provided with a support member (22) that is compatible with the plastic shell (8).

3. A compressor motor as described in claim 1, characterized in that, The lower cover (7) is provided with at least one wire outlet hole (9), the plastic shell (8) is hollow, and the side end face of the plastic shell (8) is provided with a wire passage hole (10). The upper end face of the plastic shell (8) is provided with a terminal post (11), and the terminal post (11) is connected to the wire passage hole (10).

4. A compressor motor as described in claim 3, characterized in that, An annular plate (12) is arranged vertically on the inner wall of the lower cover (7) located on one side of the outlet hole (9). A wire baffle (13) is arranged on the annular plate (12) facing the outlet hole (9). The wire baffle (13) is L-shaped.

5. A compressor motor as described in claim 1, characterized in that, The upper end face of the upper cover (6) is provided with several heat dissipation holes (14).

6. A compressor motor as described in claim 1, characterized in that, The upper frame (3) and the lower frame (4) are each provided with a locking block (15) at the end of their outer wall away from the stator yoke (1), and the upper cover (6) and the lower cover (7) are each provided with a locking groove (16) that matches the locking block (15).

7. A compressor motor as described in claim 1, characterized in that, Both the upper frame (3) and the lower frame (4) have protrusions (17) on their end faces near the stator yoke (1). The stator yoke (1) has grooves (18) that are adapted to the protrusions (17). Both the upper frame (3) and the lower frame (4) are fixedly connected to the stator yoke (1).

8. A compressor motor as described in claim 1, characterized in that, The three-phase windings of the stator assembly are connected in a delta configuration.

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