Motor stator slot insulation structure for scroll compressor

Abstract

The utility model discloses a motor stator slot insulation structure for a scroll compressor, and relates to the technical field of scroll compression motor insulation, in particular to the motor stator slot insulation structure for the scroll compressor. The stator comprises a stator core, wire embedding grooves, groove insulation sheets, groove sealing insulation strips and stator coils. A plurality of wire embedding grooves are uniformly distributed in the stator core around the axis; the wire embedding grooves axially penetrate through the stator iron core; the groove bottom of the wire embedding groove is provided with a communication part which is communicated with the central through hole of the stator iron core; a slot insulation sheet is arranged in the wire embedding slot; a stator coil is arranged in the slot insulation sheet; groove sealing insulation strips are assembled at the communication positions of the wire embedding grooves and the stator iron core, and stator coils are packaged in the groove insulation strips. According to the technical scheme of the utility model, the problem of poor insulation caused by breakdown due to friction due to the fact that the insulating strip and the insulating strip are easy to move downwards and transversely when the stator coil is inserted due to the fact that the insulating strip and the insulating strip are not provided with a positioning structure in the prior art is solved.

Description

Technical Field

[0001] The utility model discloses an insulation structure of a motor stator slot for a scroll compressor, relates to the technical field of insulation of scroll compressor motors, and in particular to an insulation structure of a motor stator slot for a scroll compressor. Background Art

[0002] For the stator slot insulation structure of the motor for the scroll compressor, the existing technology is generally composed of slot insulation sheets, common insulation strips and slot sealing insulation strips arranged in multiple wire embedding slots inside the stator core. The common insulation strip is generally a long strip of insulation sheet with a through fold. After the upper coil is embedded, when the lower coil is embedded, since the insulation sheet and the insulation strip are not provided with a positioning structure, it is easy for the common slot insulation strip to move downward due to force. After the motor has been running for a period of time, insulation breakdown will occur due to friction, resulting in poor insulation. In the case of insufficient slot fill rate, when the slot sealing insulation strip is embedded in the coil, it is easy for the slot sealing insulation strip to move downward due to force, resulting in poor insulation.

[0003] In view of the problems existing in the above-mentioned prior art, it is very necessary to study and design a new type of stator slot insulation structure of a motor for a scroll compressor, so as to overcome the problems existing in the prior art. Summary of the invention

[0004] According to the technical problem that the insulating sheet and the insulating strip are prone to downward movement and lateral movement due to the lack of positioning structure in the prior art, when the stator coil is embedded, the insulating sheet and the insulating strip are prone to poor insulation after being broken down due to friction, and a stator slot insulation structure for a scroll compressor motor is provided. The utility model mainly utilizes a notch on both sides above the insulating strip, and the ears on both sides of the notch are clamped on the slot insulating sheet to form a positioning structure, so that even if the coil is subjected to downward force when it is offline, the insulating strip can be fixed on the slot insulating sheet and will not move downward.

[0005] The technical means adopted by the utility model are as follows:

[0006] A stator slot insulation structure of a motor for a scroll compressor comprises: a stator core, a wire embedding slot, a slot insulation sheet, a slot sealing insulation strip and a stator coil;

[0007] Furthermore, a plurality of wire embedding grooves are evenly arranged around the axis inside the stator core;

[0008] Furthermore, the wire embedding slot axially penetrates the stator core;

[0009] Furthermore, the bottom of the wire embedding slot has a connection point connected to the central through hole of the stator core;

[0010] Furthermore, a slot insulating sheet is provided inside the wire embedding slot;

[0011] Furthermore, a stator coil is arranged inside the slot insulation sheet;

[0012] Furthermore, a slot sealing insulation strip is installed at the connection point between the wire embedding slot and the stator core, so that the stator coil is encapsulated inside the slot insulation sheet.

[0013] Furthermore, the slot insulation sheet has a thickness of 0.2-1 mm and a shape that matches the shape of the wire embedding slot;

[0014] Furthermore, the outer wall of the slot insulation sheet fits the inner wall of the wire embedding slot;

[0015] Furthermore, the bottom of the slot insulation sheet is turned 2-10 mm toward the outside of the bottom of the wire embedding slot;

[0016] Furthermore, the axial length of the slot insulation sheet is greater than the axial length of the stator core.

[0017] Furthermore, the stator coil is composed of two layers of coils, an upper layer and a lower layer, which are separated by a common insulating strip.

[0018] Furthermore, the main body of the common insulating strip is a long strip of insulating strip with a thickness of 0.2-1 mm and a certain hardness, and a notch is arranged on both sides 2-10 mm away from one end of the common insulating strip, and the ears on both sides of the notch are positioning parts for preventing the common insulating strip from moving;

[0019] Further, the depth of the notch is 2-10 mm;

[0020] Furthermore, two fold lines are symmetrically arranged on the common insulating strip, one end of the fold line is the end of the notch, and the other end extends to the other end of the common insulating strip;

[0021] Furthermore, the edge of the common insulating strip is folded upward along the fold line to form two symmetrical clamping strips; after the common insulating strip is inserted into the wire embedding groove, the clamping strip plays a role in supporting the common insulating strip.

[0022] Furthermore, the main body of the slot sealing insulating strip is a long strip of insulating strip with a thickness of 0.2-1mm and a certain hardness, and a notch is arranged on both sides 2-10mm away from one end of the slot sealing insulating strip, and the ears on both sides of the notch are positioning parts for preventing the slot sealing insulating strip from moving;

[0023] Further, the depth of the notch is 2-10 mm;

[0024] Furthermore, two fold lines are symmetrically arranged on the slot sealing insulating strip, one end of the fold line is the end of the notch, and the other end extends to the other end of the slot sealing insulating strip;

[0025] Furthermore, the edge of the slot sealing insulating strip is folded upward along the fold line to form two symmetrical clamping strips; after the slot sealing insulating strip is inserted into the wire embedding slot, the clamping strip plays a role in supporting the slot sealing insulating strip.

[0026] Compared with the prior art, the utility model has the following advantages:

[0027] 1. The utility model provides a motor stator slot insulation structure for a scroll compressor. The positioning portion of the common insulation strip can be stuck on the slot insulation sheets on both sides to play a fixing role. When the lower coil is embedded, the ear-shaped sides of the common insulation strip formed by the notch are stuck on the slot insulation sheets on both sides, and will not move downward to cause interphase contact between the upper and lower coils, thereby effectively ensuring the reliability of interphase insulation. This solves the problem that the common insulation strip of the motor in the past is generally a long strip insulation sheet with only a fold and no positioning portion. After the upper coil is embedded, when the lower coil is embedded, it is easy to cause the common slot insulation strip to move downward due to force. After the motor has run for a period of time, insulation breakdown will occur due to friction, resulting in poor insulation.

[0028] 2. The utility model provides an insulation structure for the stator slot of a motor for a scroll compressor. The positioning portion of the slot sealing insulation strip can be stuck on the slot insulation sheets on both sides to play a fixing role. When the lower coil is embedded, the ear-shaped positioning portions of the slot sealing insulation strip formed by the notch are stuck on the slot insulation sheets on both sides and will not move downward, thus effectively ensuring the reliability of insulation. This solves the problem that the slot sealing insulation strip of the motor in the past is generally a long strip of insulation sheet with a fold and has no positioning portion. When the lower coil is embedded, especially when the motor slot fill rate is not high, it is easy to cause the slot sealing insulation strip to move downward due to force. After the motor has been running for a period of time, insulation breakdown will occur due to friction, resulting in poor insulation.

[0029] 3. The utility model provides a stator slot insulation structure for a scroll compressor motor, wherein the common insulation strip and the slot sealing insulation strip are made of relatively stiff insulation material, so that when the lower coil is embedded, the ear-shaped positioning parts on both sides of the upper end of the common insulation strip can be more securely and stably stuck on the slot insulation sheets on both sides.

[0030] In summary, the technical solution of the utility model solves the problem in the prior art that the insulating sheets and insulating strips are not provided with a positioning structure, which easily causes the insulating sheets and insulating strips to move downward and laterally when the stator coil is embedded, resulting in poor insulation after being broken down due to friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 This is a schematic diagram of the stator core structure of the utility model;

[0033] Figure 2 This is a schematic diagram of the assembly structure of the utility model;

[0034] Figure 3 For this utility model Figure 2 A magnified view of part A;

[0035] Figure 4 It is a top view of the common insulating strip or slot-sealed insulating strip of the utility model before bending;

[0036] Figure 5 This is a schematic diagram of the structure of the common insulating strip or slot-sealed insulating strip of the utility model after bending;

[0037] Figure 6 A top view of an existing common insulating strip or slot-sealed insulating strip before bending;

[0038] Figure 7 It is a schematic diagram of the structure of the existing common insulating strip or slot-sealed insulating strip after bending.

[0039] In the figure: 1, stator core 2, wire embedding slot 3, slot insulating sheet 4, common insulating strip 5, slot sealing insulating strip 6, stator coil 7, positioning part 8, notch 9, fold line 10, clamping strip. DETAILED DESCRIPTION

[0040] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0042] 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 utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0043] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the utility model. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0044] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present utility model: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0045] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0046] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0047] like Figure 1-3 As shown, the utility model provides a stator slot insulation structure of a motor for a scroll compressor, comprising: a stator core 1, a wire embedding slot 2, a slot insulating sheet 3, a slot sealing insulating strip 5 and a stator coil 6; a plurality of wire embedding slots 2 are evenly arranged around the axis inside the stator core 1; the wire embedding slots 2 axially penetrate the stator core 1; the slot bottom of the wire embedding slot 2 has a connection point connected to the central through hole of the stator core 1; a slot insulating sheet 3 is arranged inside the wire embedding slot 2; a stator coil 6 is arranged inside the slot insulating sheet 3; a slot sealing insulating strip 5 is installed at the connection point between the wire embedding slot 2 and the stator core 1, and the stator coil 6 is encapsulated inside the slot insulating sheet 3.

[0048] like Figure 3 As shown, the slot insulating sheet 3 has a thickness of 0.2-1 mm, and its shape matches that of the wire embedding slot 2; the outer wall of the slot insulating sheet 3 fits the inner wall of the wire embedding slot 2; the bottom of the slot insulating sheet 3 is turned 2-10 mm toward the outside of the bottom of the wire embedding slot 2; the axial length of the slot insulating sheet 3 is greater than the axial length of the stator core 1.

[0049] like Figure 2 , 3 As shown, the stator coil 6 is composed of two layers of coils, the upper and lower layers of coils, which are separated by a common insulating strip 4.

[0050] like Figure 4 , 5As shown, the common insulating strip 4 and the slot-sealed insulating strip 5 have the same structure, and both are long insulating strips with a thickness of 0.2-1mm and a certain hardness. A notch 8 is arranged on both sides 2-10mm away from one end of the common insulating strip 4 or the slot-sealed insulating strip 5, and the ears on both sides of the notch 8 are positioning parts 7 for preventing the common insulating strip 4 from moving; the depth of the notch 8 is 2-10mm; two fold lines 9 are symmetrically arranged on the common insulating strip 4 or the slot-sealed insulating strip 5, one end of the fold line 9 is the end of the notch 8, and the other end extends to the other end of the common insulating strip 4; the edge of the common insulating strip 4 or the slot-sealed insulating strip 5 is folded upward along the fold line 9 to form two symmetrical clamping strips 10; after the common insulating strip 4 or the slot-sealed insulating strip 5 is inserted into the interior of the wire embedding groove 2, the clamping strip 10 plays a role in supporting the common insulating strip 4 and the slot-sealed insulating strip 5.

[0051] like Figure 2 , 3 As shown, both ends of the slot insulating sheet 3, the common insulating strip 4 and the slot sealing insulating strip 5 pass out of the wire embedding slot 2, and the length of the two ends passing out of the wire embedding slot 2 is 2 to 10 mm.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A motor stator slot insulation structure for a scroll compressor, characterized in that: The stator slot insulation structure of the motor for the scroll compressor comprises: a stator core (1), a wire embedding slot (2), a slot insulation sheet (3), a slot sealing insulation strip (5) and a stator coil (6); The stator core (1) is provided with a plurality of wire embedding grooves (2) evenly distributed around the axis. The wire embedding groove (2) axially penetrates the stator core (1); The groove bottom of the wire embedding groove (2) has a connection point connected to the central through hole of the stator core (1); A slot insulating sheet (3) is provided inside the wire embedding slot (2); A stator coil (6) is arranged inside the slot insulating sheet (3); A slot sealing insulating strip (5) is installed at the connection point between the wire embedding slot (2) and the stator core (1), and the stator coil (6) is sealed inside the slot insulating sheet (3).

2. The stator slot insulation structure of a scroll compressor motor according to claim 1, characterized in that: The slot insulating sheet (3) has a thickness of 0.2-1 mm and a shape that matches the shape of the wire embedding slot (2); The outer wall of the slot insulating sheet (3) is in contact with the inner wall of the wire embedding slot (2); The bottom of the slot insulating sheet (3) is turned 2-10 mm toward the outside of the bottom of the wire embedding slot (2); The axial length of the slot insulation sheet (3) is greater than the axial length of the stator core (1).

3. The stator slot insulation structure of a scroll compressor motor according to claim 1, characterized in that: The stator coil (6) is composed of two layers of coils, the upper and lower layers of coils being separated by a common insulating strip (4).

4. The stator slot insulation structure of the motor for the scroll compressor according to claim 3, characterized in that: The main body of the common insulating strip (4) is a long strip of insulating strip with a thickness of 0.2-1 mm and a certain hardness. A notch (8) is arranged on both sides 2-10 mm away from one end of the common insulating strip (4). The ears on both sides of the notch (8) are positioning parts (7) for preventing the common insulating strip (4) from moving. The depth of the notch (8) is 2-10 mm; Two fold lines (9) are symmetrically arranged on the common insulating strip (4), one end of the fold line (9) is the end of the notch (8), and the other end extends to the other end of the common insulating strip (4); The edge of the common insulating strip (4) is folded upward along the folding line (9) to form two symmetrical clamping strips (10); after the common insulating strip (4) is inserted into the interior of the wire embedding groove (2), the clamping strips (10) play a role in supporting the common insulating strip (4).

5. The stator slot insulation structure of a scroll compressor motor according to claim 1, characterized in that: The main body of the slot sealing insulating strip (5) is a long strip of insulating strip with a thickness of 0.2-1 mm and a certain hardness. A notch (8) is arranged on both sides 2-10 mm away from one end of the slot sealing insulating strip (5). The ears on both sides of the notch (8) are positioning parts (7) for preventing the slot sealing insulating strip (5) from moving. The depth of the notch (8) is 2-10 mm; Two fold lines (9) are symmetrically arranged on the slot sealing insulating strip (5), one end of the fold line (9) is the end of the notch (8), and the other end extends to the other end of the slot sealing insulating strip (5); The edge of the slot sealing insulating strip (5) is folded upward along the folding line (9) to form two symmetrical clamping strips (10); after the slot sealing insulating strip (5) is inserted into the interior of the wire embedding groove (2), the clamping strip (10) plays a role in supporting the slot sealing insulating strip (5).

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