Integrated interphase insulation structure applied to stator assembly

Abstract

The utility model relates to the technical field of compressors, and discloses an integrated interphase insulation structure applied to a stator assembly, the insulation structure comprises a first connecting piece, a second connecting piece and a plurality of insulation sheets, the plurality of insulation sheets are respectively distributed corresponding to the positions of stator grooves on a stator, and the first connecting piece is connected with the second connecting piece. Each insulation sheet comprises a first end and a second end along the axial direction of the stator, the first connecting piece is connected with the first end of each insulation sheet, the second connecting piece is connected with the second end of each insulation sheet, the insulation sheets are used for being inserted into stator grooves of the stator, the first connecting piece is used for being abutted against the upper end surface of the stator, and the second connecting piece is used for being abutted against the lower end surface of the stator. The second connecting piece is used for abutting against the lower end face of the stator. The utility model has the following technical effects: 1, the insulation distance between phases is ensured while the slot fill factor is improved; and 2, the structure is integrated, the mounting convenience and stability are improved, the thermal deformation is small, and the product quality is better guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of compressors, and in particular relates to an integrated phase-to-phase insulation structure applied to a stator assembly. Background Art

[0002] At present, with the increasing market competition, the performance requirements of conventional vertical rotary compressor motors are constantly increasing. In this environment, it is necessary to continuously iterate and optimize the motor design and production process. Among them, adding windings is an option to improve performance. However, increasing the winding means an increase in the slot fill rate. For the permanent magnet synchronous motor stator, the spacing between adjacent phases will decrease, resulting in a reduction in the safe distance between phases.

[0003] Due to the reduction in the safe distance between phases, arc discharge and sparking are likely to occur between phases when the motor is powered on, posing the risk of burning the motor. In addition, the existing interphase insulating paper is mostly installed by inserting it into the stator slots one by one. This method has the problems of complex installation procedures, unstable installation, and the single-structure insulating paper is easily deformed by heat. Utility Model Content

[0004] In order to address the deficiencies of the prior art, the utility model provides an integrated phase-to-phase insulation structure applied to a stator assembly, which improves the slot fill rate while ensuring the insulation distance between phases, improves installation convenience and stability, and reduces thermal deformation, thereby better ensuring product quality.

[0005] The technical purpose to be achieved by the utility model is achieved through the following technical solutions:

[0006] The utility model provides an integrated interphase insulation structure applied to a stator assembly, the insulation structure comprising a first connecting member, a second connecting member and a plurality of insulation sheets;

[0007] The plurality of insulating sheets are respectively distributed corresponding to the positions of the stator slots on the stator, the insulating sheets include a first end and a second end along the axial direction of the stator, the first connecting member is connected to the first end of each insulating sheet, and the second connecting member is connected to the second end of each insulating sheet;

[0008] The insulating sheet is used to be inserted into a stator slot of the stator, the first connecting piece is used to abut against an upper end surface of the stator, and the second connecting piece is used to abut against a lower end surface of the stator.

[0009] In some implementations, the insulating sheet is located at the center line of the stator slot, that is, in the middle of adjacent phase windings, to ensure a stable insulation effect.

[0010] In some implementations, it further includes a plurality of silencer columns corresponding to the insulating sheets, and two ends of the silencer columns are respectively connected to the first connector and the second connector;

[0011] One side of the insulating sheet away from the stator slot is connected to the corresponding muffler column;

[0012] The silencer column is used to be embedded in the notch of the stator slot, absorb and convert the energy of the vibration between the stator teeth, reduce the influence of the circumferential electromagnetic force and part of the radial electromagnetic force coupled by the structure, and make the vibration between adjacent stator teeth offset and weaken each other, reduce the noise generated, and achieve the purpose of silencer.

[0013] In some implementations, the insulating sheet and the first connector are detachably connected, and the insulating sheet and the second connector are fixedly connected, which facilitates installation and improves the stability of the overall structure.

[0014] In some implementations, the silencer column and the first connecting member are in contact connection, and the silencer column and the second connecting member are in fixed connection, which facilitates installation and improves the stability of the overall structure.

[0015] In some implementations, a connection port is formed on the first connector at a position corresponding to each of the insulating sheets, and a connecting portion is formed on the insulating sheet to be inserted into the connection port, thereby achieving a detachable connection effect.

[0016] In some implementations, the connection port includes a straight section and a flared section connected along its penetration direction;

[0017] The connecting portion comprises a first connecting piece and a second connecting piece which are arranged at intervals, a first protrusion is formed at an end of the first connecting piece, and a second protrusion is formed at an end of the second connecting piece;

[0018] After the first connecting piece and the second connecting piece pass through the straight section, the first protrusion and the second protrusion abut against the inner wall of the expanded section.

[0019] In some implementations, the first connecting member is an annular structure, and the inner diameter of the first connecting member is M, and the width of the silencer column distributed along the circumference of the first connecting member is N, and 0.025M≤N≤0.2M ensures the connection stability between the first connecting member and each silencer column, as well as the stability of the overall structure.

[0020] In some implementations, the cross-section of the silencing column is polygonal, circular, semicircular, or elliptical.

[0021] In some implementations, the first connecting member and the second connecting member are annular structures or polygonal structures.

[0022] In summary, the utility model has at least the following benefits:

[0023] 1. The integrated interphase insulation structure applied to the stator assembly provided by the utility model is provided with an integrated interphase insulation structure to effectively insulate between phases, thereby achieving an improvement in the slot fill rate while ensuring the insulation distance between phases.

[0024] 2. The integrated interphase insulation structure applied to the stator assembly provided by the utility model connects and fixes each insulating sheet through a first connecting member and a second connecting member, and can complete the installation of each insulating sheet at one time, thereby improving the convenience and stability of installation, and reducing the amount of thermal deformation, thereby better ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the insulation structure of Example 1 of the utility model;

[0026] Figure 2 This is a schematic diagram of an application scenario of Embodiment 1 of the present utility model;

[0027] Figure 3 for Figure 2 sectional view of;

[0028] Figure 4 It is a schematic diagram of the insulation structure of Embodiment 2 and Embodiment 3 of the present utility model;

[0029] Figure 5 This is a schematic diagram of a first connecting member of Embodiment 2 of the present utility model;

[0030] Figure 6 This is a schematic diagram of the connection port of Example 2 of the utility model;

[0031] Figure 7 This is a schematic diagram of the connection portion of Embodiment 2 of the present utility model;

[0032] 100, first connecting member; 110, connecting port; 111, straight section; 112, expanded section;

[0033] 200, second connecting member;

[0034] 300, insulating sheet; 310, connecting portion; 311, first connecting sheet; 312, second connecting sheet; 313, first protrusion; 314, second protrusion;

[0035] 400, silencer column;

[0036] 500, stator; 510, stator slot. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. The described implementation is a part of the implementation of the utility model, not all of the implementations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0039] Embodiment 1:

[0040] See also Figure 1-Figure 3 , an integrated phase-to-phase insulation structure applied to a stator assembly, which can insulate adjacent phases on a stator 500.

[0041] The insulating structure includes a first connecting member 100, a second connecting member 200 and a plurality of insulating sheets 300, and the number of insulating sheets 300 matches the number of stator slots 510. It can be seen that in the compressor, the stator 500 includes a plurality of stator teeth distributed in an annular manner, and a stator slot 510 is defined between two adjacent stator teeth. For example, the stator 500 includes 12 stator teeth distributed in an annular manner. Since the 12 stator teeth are designed to be distributed in an annular manner, the 12 stator teeth define a total of 12 stator slots 510, that is, the number of insulating sheets 300 is 12.

[0042] Each insulating sheet 300 corresponds to the position distribution of each stator slot 510 on the stator 500. Windings are wound on the stator teeth, and there are two adjacent groups of windings in the same stator slot 510. Therefore, each insulating sheet 300 is inserted into each stator slot 510 to insulate the two adjacent groups of windings, that is, to insulate adjacent phases.

[0043] It can be known that the stator 500 as a whole presents a hollow cylindrical structure, and the insulating sheet 300 includes a first end and a second end along the axial direction of the stator 500. The first connecting member 100 is connected to the first end of each insulating sheet 300, and the second connecting member 200 is connected to the second end of each insulating sheet 300. The first connecting member 100 is used to abut against the upper end surface of the stator 500, and the second connecting member 200 is used to abut against the lower end surface of the stator 500. In this way, the position of each insulating sheet 300 can be fixed to form an integral structure, which is convenient for installing the insulating structure with the stator 500, improving the convenience of operation and the stability of installation. At the same time, the upper end surface of the stator 500 is used to abut and support the first connecting member 100, and the lower end surface of the stator 500 is used to abut and support the second connecting member 200, which can further improve the installation stability of the insulating structure and thereby improve the stability of the insulation effect.

[0044] The insulating sheet 300 is located at the center line of the stator slot 510 , that is, in the middle of adjacent phase windings, to ensure a stable insulation effect.

[0045] It can be known that there are two groups of windings in the same stator slot 510, and the two groups of windings are respectively wound on two stator teeth that define the same stator slot 510. Therefore, in order to ensure that the insulating sheet 300 has a stable insulation effect on the two groups of windings, the insulating sheet 300 is inserted into the stator slot 510 and located at the center line position of the stator slot 510.

[0046] The utility model provides an integrated interphase insulation structure for a stator assembly, which is provided with an integrated interphase insulation structure to effectively insulate the phases, thereby improving the slot fill rate while ensuring the insulation distance between the phases; each insulating sheet 300 is connected and fixed by a first connector 100 and a second connector 200, so that the installation of each insulating sheet 300 can be completed at one time, thereby improving the convenience and stability of installation, and reducing the amount of thermal deformation, thereby better ensuring product quality.

[0047] Embodiment 2:

[0048] The difference between this embodiment and embodiment 1 is that this embodiment further optimizes the structure of the integrated interphase insulation structure of the utility model, see Figure 4-Figure 7 .

[0049] The insulating structure further includes a plurality of silencer columns 400 corresponding to the respective insulating sheets 300 , and two ends of the silencer columns 400 are respectively connected to the first connecting member 100 and the second connecting member 200 .

[0050] Specifically, the two ends of the silencer column 400 are respectively two ends extending along the axial direction of the stator 500, and are respectively connected to the first connecting member 100 and the second connecting member 200, and the position where each silencer column 400 is connected to the first connecting member 100 and the second connecting member 200 is the same as the position where the corresponding insulating sheet 300 is connected to the first connecting member 100 and the second connecting member 200, wherein a side edge of the insulating sheet 300 away from the stator slot 510 is connected to the corresponding silencer column 400.

[0051] For ease of understanding, the insulating sheet 300 is set here as a quadrilateral sheet structure, including a group of long sides and a group of short sides, and the ends of a group of short sides are respectively connected to the first connecting member 100 and the second connecting member 200, one of the long sides is inserted into the stator slot 510, and the other long side is connected to the silencer column 400, that is, one side of the insulating sheet 300 away from the stator slot 510 is connected to the corresponding silencer column 400.

[0052] The silencer column 400 is used to be embedded in the notch of the stator slot 510 to absorb and convert the energy of the vibration between the stator teeth, reduce the influence of the circumferential electromagnetic force and part of the radial electromagnetic force coupled by the structure, and make the vibration between adjacent stator teeth offset and weaken each other, reduce the noise generated, and achieve the purpose of silencer.

[0053] In some embodiments, the insulating sheet 300 and the first connecting member 100 are detachably connected, the insulating sheet 300 and the second connecting member 200 are fixedly connected, the silencer column 400 and the first connecting member 100 are in contact connection, and the silencer column 400 and the second connecting member 200 are fixedly connected, so as to facilitate installation and improve the stability of the overall structure.

[0054] In order to improve the overall stability, the second ends of the insulating sheet 300 and the silencer column 400 are fixedly connected to the second connecting member 200. In addition, the insulating sheet 300 is connected to the corresponding silencer column 400 by means of a side edge away from the stator slot 510, so that the insulating sheet 300, the silencer column 400 and the second connecting member 200 are an integrated structure, which facilitates the assembly of this integrated connection structure with the stator 500.

[0055] When the insulation structure is injection molded, the insulation sheet 300, the silencer column 400 and the second connecting member 200 can be an integrated structure, which serves as the first part of the insulation structure, and the first connecting member 100 can be separately injection molded, which serves as the second part of the insulation structure. The purpose of doing so is that when the insulation structure is assembled with the stator 500, the first part can be assembled with the stator 500 first, so that each insulation sheet 300 is respectively inserted into the corresponding stator slot 510, and each silencer column 400 is respectively embedded in the notch of the corresponding stator slot 510, and then the second part is connected to the first part to fix the position of each insulation sheet 300 and silencer column 400, and improve the installation stability of the insulation structure.

[0056] In some embodiments, a connection port 110 is provided on the first connector 100 at a position corresponding to each insulating sheet 300, and a connection portion 310 is formed on the insulating sheet 300 and inserted into the connection port 110, so that each insulating sheet 300 is connected to the first connector 100, thereby limiting and fixing the position of the silencer column 400 and the insulating sheet 300, and achieving the effect of detachable connection.

[0057] Specifically, the connecting port 110 includes a straight section 111 and a flared section 112 connected to each other along its penetration direction, that is, the caliber of the flared section 112 is larger than the caliber of the straight section 111; the connecting portion 310 includes a first connecting piece 311 and a second connecting piece 312 arranged at intervals, and a first protrusion 313 is formed at the end of the first connecting piece 311, and a second protrusion 314 is formed at the end of the second connecting piece 312; after the first connecting piece 311 and the second connecting piece 312 pass through the straight section 111, the first protrusion 313 and the second protrusion 314 abut against the inner wall of the flared section 112.

[0058] The first connecting piece 311 and the second connecting piece 312 are arranged at intervals, so that when the first connecting piece 311 and the second connecting piece 312 pass through the straight section 111, they are limited by the diameter of the straight section 111, so that the first connecting piece 311 and the second connecting piece 312 are both contracted toward the interval. After the first connecting piece 311 and the second connecting piece 312 pass through the straight section 111, their ends are first located at the expanded section 112. At this time, since the diameter of the expanded section 112 is larger than the diameter of the straight section 111, the first protrusion 313 and the second protrusion 314 are affected by the restoring effect of the first connecting piece 311 and the second connecting piece 312, and abut against the inner wall of the expanded section 112, thereby realizing the detachable connection between the insulating sheet 300 and the second connecting member 200.

[0059] Embodiment 3:

[0060] The difference between this embodiment and embodiment 2 is that this embodiment further optimizes the structure of the integrated interphase insulation structure of the utility model, see Figure 4 .

[0061] The first connecting member 100 is an annular structure. The inner diameter of the first connecting member 100 is M, and the width N of the silencer column 400 distributed along the circumference of the first connecting member 100 is 0.025M≤N≤0.2M, thereby ensuring the connection stability between the first connecting member 100 and each silencer column 400 and ensuring the stability of the overall structure.

[0062] For example, the width of the silencer column 400 along the circumferential direction of the first connecting member 100 is 3 mm, and the inner diameter of the first connecting member 100 is 50 mm. Restricting the relationship between the inner diameter of the first connecting member 100 and the width of the silencer column 400 along the circumferential direction of the first connecting member 100 can ensure the connection stability between the first connecting member 100 and each silencer column 400, as well as the overall structural stability of the insulation structure, thereby improving its stability in use.

[0063] In some embodiments, the cross-section of the muffler column 400 is polygonal, circular, semicircular, or elliptical.

[0064] The silencer column 400 is used to be embedded in the notch of the stator slot 510. Therefore, the structural design of the silencer column 400 only needs to meet the requirement that it can be embedded in the notch of the stator slot 510. Therefore, the cross-section of the silencer column 400 can be other shapes besides polygonal, circular, semicircular or elliptical. The specific shape can be adjusted according to actual needs and is not limited here.

[0065] In some embodiments, the first connecting member 100 and the second connecting member 200 are annular structures or polygonal structures.

[0066] To match the structure of the stator 500, each insulating sheet 300 and silencer column 400 corresponds to each stator slot 510 and the notch position of the stator slot 510. Therefore, each insulating sheet 300 and silencer column 400 is distributed in a ring shape. In this way, a first connecting member 100 and a second connecting member 200 with a ring structure or a polygonal structure are provided to facilitate connection with each insulating sheet 300 and silencer column 400, thereby improving the convenience of production and assembly.

[0067] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0069] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0070] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0071] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. An integrated phase-to-phase insulation structure for a stator assembly, characterized in that: The insulating structure comprises a first connecting member (100), a second connecting member (200) and a plurality of insulating sheets (300); The plurality of insulating sheets (300) are respectively distributed corresponding to the positions of the stator slots on the stator, the insulating sheets (300) comprising a first end and a second end along the axial direction of the stator, the first connecting member (100) being connected to the first end of each insulating sheet (300), and the second connecting member (200) being connected to the second end of each insulating sheet (300); The insulating sheet (300) is used to be inserted into a stator slot of the stator, the first connecting piece (100) is used to abut against the upper end surface of the stator, and the second connecting piece (200) is used to abut against the lower end surface of the stator.

2. The integrated interphase insulation structure applied to the stator assembly according to claim 1, characterized in that: The insulating sheet (300) is located at the center line of the stator slot.

3. The integrated interphase insulation structure applied to a stator assembly according to claim 1, characterized in that: It also includes a plurality of silencer columns (400) respectively corresponding to each of the insulating sheets (300), and two ends of the silencer columns (400) are respectively connected to the first connecting member (100) and the second connecting member (200); A side edge of the insulating sheet (300) away from the stator slot is connected to the corresponding muffler column (400); The muffler column (400) is used to be embedded in a slot opening of a stator slot.

4. The integrated interphase insulation structure applied to the stator assembly according to claim 3, characterized in that: The insulating sheet (300) and the first connecting member (100) are detachably connected, and the insulating sheet (300) and the second connecting member (200) are fixedly connected.

5. The integrated interphase insulation structure applied to a stator assembly according to claim 3, characterized in that: The silencer column (400) and the first connecting member (100) are in contact connection, and the silencer column (400) and the second connecting member (200) are in fixed connection.

6. The integrated interphase insulation structure applied to a stator assembly according to claim 4, characterized in that: A connection port (110) is provided on the first connection member (100) at a position corresponding to each of the insulating sheets (300), and a connection portion (310) is formed on the insulating sheet (300) and is inserted into the connection port (110).

7. The integrated interphase insulation structure applied to a stator assembly according to claim 6, characterized in that: The connecting port (110) comprises a straight port section (111) and a flared port section (112) connected to each other along its penetration direction; The connecting portion (310) comprises a first connecting piece (311) and a second connecting piece (312) which are arranged at intervals, a first protrusion (313) being formed at the end of the first connecting piece (311), and a second protrusion (314) being formed at the end of the second connecting piece (312); After the first connecting piece (311) and the second connecting piece (312) pass through the straight section (111), the first protrusion (313) and the second protrusion (314) abut against the inner wall of the expanded section (112).

8. The integrated interphase insulation structure applied to a stator assembly according to claim 3, characterized in that: The first connecting member (100) is an annular structure. The inner diameter of the first connecting member (100) is assumed to be M. The width of the silencer column (400) distributed along the circumference of the first connecting member (100) is assumed to be N. 0.025M≤N≤0.2M.

9. The integrated interphase insulation structure applied to a stator assembly according to claim 3, characterized in that: The cross section of the muffler column (400) is polygonal, circular, semicircular or elliptical.

10. The integrated interphase insulation structure applied to a stator assembly according to claim 1, characterized in that: The first connecting member (100) and the second connecting member (200) are annular structures or polygonal structures.

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