WO2018179131A1

WO2018179131A1 - Stator of dynamoelectric machine, dynamoelectric machine, compressor, and refrigeration cycle device

Info

Publication number: WO2018179131A1
Application number: PCT/JP2017/012859
Authority: WO
Inventors: 池田　剛
Original assignee: 三菱電機株式会社
Priority date: 2017-03-29
Filing date: 2017-03-29
Publication date: 2018-10-04
Also published as: JPWO2018179131A1; JP6716017B2; CN208508642U

Abstract

A stator of a dynamoelectric machine comprises a coil, a winding part has a paired front surface and rear surface that are parallel to the central axis, a wire rod in one layer of the coil is wound around diagonally with respect to the central axis on the front surface of the winding part and is wound around in parallel with respect to the central axis on the rear surface, and the wire rod in a layer adjacent to the one layer is wound around in parallel with respect to the central axis on the front surface and is wound around diagonally with respect to the central axis on the rear surface.

Description

Rotating electric machine stator, rotating electric machine, compressor and refrigeration cycle apparatus

The present invention relates to a stator of a rotating electrical machine, a rotating electrical machine, a compressor, and a refrigeration cycle apparatus provided with a coil obtained by laminating a wire rod on a winding part.

The stator includes a winding part in which an upper insulator and a lower insulator, which are insulators, are assembled from both sides to an iron core. The stator forms a coil by laminating and winding a linear member on the winding portion. A coil formed on the winding portion constitutes the magnetic pole tooth portion. The stator is configured by coupling a plurality of magnetic teeth portions in the circumferential direction on the inner peripheral side of the yoke portion.

When a square wire is used as the coil wire, there is no space between adjacent wires when the square wire is wound around the winding portion as compared with the round wire. For this reason, the space factor of a coil becomes high. However, in this case, when winding the wire, it is necessary to control the attitude of the wound wire so that twisting of the wire is prevented. For this reason, high accuracy is required when winding the wire, and the production efficiency of the magnetic teeth portion is reduced, and the productivity of the stator is low.

On the other hand, when a round wire is used as the wire, there is no need to prevent twisting of the wire when winding the wire, and it is not necessary to control the attitude of the wire compared to the square wire. For this reason, the accuracy when winding the wire does not have to be high, the production efficiency of the magnetic teeth portion is improved, and the productivity of the stator is high. However, a space is created between adjacent wires. Thereby, the space factor of a coil becomes low. Hereinafter, the wire will be described for a round wire with high productivity.

The coil is wound around a rectangular column-shaped winding part having a rectangular cross section composed of a pair of long surfaces and a pair of short surfaces. When one wire is wound around the winding portion, the wire is wound so that the wires are wound in one layer without being overlapped while being wound around the winding portion. The coil is moved in a direction orthogonal to the direction to be applied. Then, after one coil layer is completed, the wire is wound so that the next coil layer is stacked. Hereinafter, with regard to moving the wire in a direction orthogonal to the direction in which the wire is wound, positive movement in one direction of the wire is referred to as “feed”, and negative movement in the opposite direction of the wire is referred to as “return”. "

Patent Document 1 discloses the following technique so as to improve the space factor of the coil. Of the pair of long surfaces on which the wire is wound, one of the long surfaces feeds (or returns) the wire, and the wire of one layer of the coil is wound obliquely non-parallel to the long surface. On the other long surface and the pair of short surfaces, the wire forming the next layer along the space between adjacent wires in the lower layer of the coil formed in one layer aligned without overlapping after being wound is parallel to each side. It is wound in a straight line and has a pile shape.

As a result, when a plurality of magnetic teeth portions are adjacent to each other and a stator is configured, the coil wound on the adjacent opposing long surfaces of the two magnetic teeth portions has one long surface and the other long surface. Are adjacent. For this reason, in one magnetic pole tooth part, the feeding of a coil is implemented and it has the long surface where the lamination | stacking height increased. In the other magnetic teeth portion, the coils are arranged in a stacked manner and have a long surface with a reduced stacking height. And these two long surfaces become a pair which faces each other, and a space is combined to form a useless gap so that a coil having a high space factor is obtained.

Japanese Patent No. 3625185

By the way, the gaps between the thin plates with the core cores constituting the winding part are crushed by the winding force while the coils are being laminated. As a result, the magnetic teeth portion is contracted in the longitudinal direction of the long surface. This phenomenon in which the magnetic teeth portion contracts is hereinafter referred to as “winding contraction”. In particular, the winding and shrinkage of the magnetic teeth portion when the first layer and the second layer are wound with the wire, which is the initial stage of starting to wind the wire around the winding portion, is remarkable.

As a result, the length in the longitudinal direction of the long surface of the first layer of the coil and the length in the longitudinal direction of the long surface of the core core are the same when the wire is wound around the first layer of the coil. However, when the wire is wound around the second layer of the coil, the core iron core is wound. Thereby, the length of the wire rod extended in the longitudinal direction of the long surface of the 1st layer of a coil will become long. Therefore, the wire in the longitudinal direction of the long surface of the first layer of the coil is loosened, the deflection of the first layer of the coil occurs, and the space between adjacent wires in the first layer of the coil becomes unstable.

As a result, a phenomenon called “rolling disorder” occurs in which the wire in the second layer of the coil that should have been placed in the space between the adjacent wires in the first layer of the coil cannot be placed at a predetermined set position. In addition, due to the influence of the disorder of the second layer of the coil, the coil layer wound after the disordered second layer is also disturbed.

The present invention is for solving the above-described problems, and provides a stator of a rotating electrical machine, a rotating electrical machine, a compressor, and a refrigeration cycle apparatus that can maintain the arrangement of a coil with a high space factor and can suppress turbulence. The purpose is to provide.

The stator of the rotating electrical machine according to the present invention is disposed on the inner peripheral side of the yoke portion in the circumferential direction, and extends from one end side to the other end of each of the plurality of magnetic pole teeth portions that are formed to protrude in the central axis direction. In a stator of a rotating electrical machine provided with a coil obtained by laminating wires by repeating winding while winding to the side and winding while winding from the other end side to the one end side The winding portion has a pair of front and back surfaces parallel to the central axis, and the wire in one layer of the coil is inclined with respect to the central axis on the surface of the winding portion. The wire in the layer adjacent to the one layer is wound in parallel to the central axis on the front surface, and wound on the back surface in parallel with the central axis. It is wound at an angle with respect to the central axis .

A rotating electrical machine according to the present invention includes the stator of the rotating electrical machine described above.

A compressor according to the present invention is provided with the above rotating electric machine.

A refrigeration cycle apparatus according to the present invention includes the above-described compressor.

According to the stator of the rotating electrical machine, the rotating electrical machine, the compressor, and the refrigeration cycle apparatus according to the present invention, the wire in one layer of the coil is wound obliquely with respect to the central axis on the surface of the winding portion, and back surface The wire rod in a layer adjacent to one layer was wound parallel to the central axis on the surface and wound obliquely to the central axis on the back surface. As a result, on a predetermined surface of the winding portion, the wire is crossed between the layers where the layer in which the wire is wound obliquely and the layer in which the wire is wound in a straight line are adjacent to each other. Even if the wire is slackened due to the winding contraction and the coil is bent, the wire in the next layer of the coil to be superposed regulates the slackened wire in the lower layer of the coil. Thereby, when a wire is wound, even if a shrinkage occurs and the space between the wires becomes unstable, a coil can be formed without being disturbed. Therefore, the arrangement of the coils with a high space factor can be maintained, and winding disturbance can be suppressed.

It is a schematic block diagram which shows the structure of the compressor which concerns on Embodiment 1 of this invention. It is a figure which shows collectively the stator which concerns on Embodiment 1 of this invention, Fig.2 (a) is a top view which shows a stator, FIG.2 (b) is a side view which shows a stator. It is a figure which shows collectively the magnetic pole teeth part which concerns on Embodiment 1 of this invention, FIG.3 (a) is a front view from the center side which shows a magnetic pole teeth part, FIG.3 (b) shows a magnetic pole teeth part. 3 (c) is a left side view showing the magnetic pole tooth portion, FIG. 3 (d) is a right side view showing the magnetic pole tooth portion, and FIG. 3 (e) is a view showing the magnetic pole tooth portion. It is a bottom view shown. FIG. 5 is an explanatory view showing the magnetic pole tooth portion according to the first embodiment of the present invention, with the coil removed from the AA cross section of FIG. 3 (d). It is a figure which extracts and shows the 1st layer collectively from the coil by which the magnetic pole tooth part which concerns on Embodiment 1 of this invention was wound, and Fig.5 (a) is the front from the center side which shows a magnetic pole tooth part. 5 (b) is a top view showing the magnetic pole teeth portion, FIG. 5 (c) is a left side view showing the magnetic pole teeth portion, and FIG. 5 (d) is a right side view showing the magnetic pole teeth portion. FIG. 5E is a bottom view showing the magnetic pole teeth portion. It is a figure which extracts and shows a 2nd layer collectively from the coil by which the magnetic pole tooth part which concerns on Embodiment 1 of this invention was wound, and Fig.6 (a) is the front from the center side which shows a magnetic pole tooth part. 6 (b) is a top view showing the magnetic pole teeth portion, FIG. 6 (c) is a left side view showing the magnetic pole teeth portion, and FIG. 6 (d) is a right side view showing the magnetic pole teeth portion. FIG. 6E is a bottom view showing the magnetic pole tooth portion. It is a figure which extracts and shows a 3rd layer collectively from the coil wound by the magnetic pole teeth part which concerns on Embodiment 1 of this invention, and Fig.7 (a) is the front from the center side which shows a magnetic pole teeth part 7 (b) is a top view showing the magnetic pole teeth portion, FIG. 7 (c) is a left side view showing the magnetic pole teeth portion, and FIG. 7 (d) is a right side view showing the magnetic pole teeth portion. FIG. 7E is a bottom view showing the magnetic pole tooth portion. FIG. 5 is an explanatory view showing the magnetic pole tooth portion according to the first embodiment of the present invention in a BB cross section of FIG. FIG. 4 is an explanatory view showing the magnetic pole tooth portion according to Embodiment 1 of the present invention in a CC cross section of FIG. It is a refrigerant circuit figure which shows the refrigerating-cycle apparatus to which the compressor based on Embodiment 4 of this invention is applied.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, in each figure, what attached | subjected the same code | symbol is the same or it corresponds, and this is common in the whole text of a specification. Furthermore, the forms of the constituent elements shown in the entire specification are merely examples, and are not limited to these descriptions.

Embodiment 1 FIG.
<Compressor configuration>
FIG. 1 is a schematic configuration diagram showing a configuration of a compressor 100 according to Embodiment 1 of the present invention. A compressor 100 shown in FIG. 1 has an outer frame surrounded by a shell 1. The compressor 100 includes an electric motor 2 as a rotating electric machine and a compression mechanism 3 in the shell 1. The electric motor 2 includes a stator 4 and a rotor 2a. The stator 4 is disposed with a gap on the radially outer side of the central axis O of the rotor 2a.

<Configuration of stator 4>
FIG. 2 is a view collectively showing the stator 4 according to Embodiment 1 of the present invention, FIG. 2 (a) is a top view showing the stator 4, and FIG. 2 (b) is a view showing the stator 4. FIG. FIG. The stator 4 shown in FIG. 2 includes a yoke portion 4a, a coil 5 obtained by laminating a round wire member 51, and a winding portion 6 around which the coil 5 is wound. The coil 5 and the winding part 6 constitute a magnetic pole tooth part 7. The plurality of magnetic pole tooth portions 7 are arranged in the circumferential direction on the inner peripheral side of the yoke portion 4a. The plurality of magnetic teeth portions 7 are formed so as to protrude in the direction of the central axis O. The stator 4 is configured by coupling a plurality of magnetic pole teeth 7.

The winding part 6 has the upper insulator 9 and the lower insulator 10 which are insulators assembled to the iron core 8 from both sides. A coil 5 is wound around the winding part 6. A magmate 11 is embedded in the upper insulator 9.

Each magnetic tooth portion 7 electrically connects each U layer, V layer, and W layer phase via a jumper wire 12. Each magnetic tooth portion 7 is provided with a lead wire 13 for supplying electricity to each U phase, V phase, and W phase.

FIG. 3 is a view collectively showing the magnetic pole teeth portion 7 according to Embodiment 1 of the present invention. FIG. 3A is a front view showing the magnetic pole teeth portion 7 from the center side, and FIG. ) Is a top view showing the magnetic pole teeth portion 7, FIG. 3 (c) is a left side view showing the magnetic pole teeth portion 7, and FIG. 3 (d) is a right side view showing the magnetic pole teeth portion 7. FIG. 3E is a bottom view showing the magnetic pole tooth portion 7.

The magnetic teeth portion 7 shown in FIG. 3 is an assembly of the stator 4 shown in FIG. The iron core 8 generally has a structure in which a plurality of thin plates are laminated so as to reduce eddy currents. Caulking is formed on each thin plate. By this caulking, the thin plates are joined one by one, and a plurality of thin plates are laminated. Since the iron core 8 is connected by caulking, a gap is generated between the thin plates.

FIG. 4 is an explanatory diagram showing the magnetic pole tooth portion 7 according to the first embodiment of the present invention, with the coil 5 removed in the AA cross section of FIG. 3 (d). As shown in FIG. 4, the winding portion 6 has four surfaces on which the coil 5 is wound, and has a rectangular column shape having a rectangular cross section in the upward direction in FIG. 4, which is orthogonal to the direction in which the coil 5 is wound. . In the winding part 6, the coil 5 is wound around a rectangular column-shaped winding frame having a rectangular cross section composed of a pair of

long surfaces

14 and 15 and a pair of

short surfaces

16 and 17. When one wire 51 is wound around the winding part 6, while the wire 51 is wound around the winding part 6, the wire 51 is aligned and wound in one layer without overlapping. The wire 51 is sent in a direction orthogonal to the direction in which the wire 51 is wound. Then, after the first layer of the coil 5 is completed, the wire material 51 is stacked and wound back so as to form the coil 5 of the next layer.

FIG. 5 is a diagram illustrating the first layer extracted from the coil 5 around which the magnetic tooth portion 7 according to Embodiment 1 of the present invention is wound, and FIG. 5 (b) is a top view showing the magnetic pole tooth portion 7, FIG. 5 (c) is a left side view showing the magnetic pole tooth portion 7, and FIG. ) Is a right side view showing the magnetic pole tooth portion 7, and FIG. 5E is a bottom view showing the magnetic pole tooth portion 7. FIG. 6 is a diagram showing the second layer extracted from the coil 5 around which the magnetic tooth portion 7 according to Embodiment 1 of the present invention is wound, and FIG. 6 (b) is a top view showing the magnetic pole teeth portion 7, FIG. 6 (c) is a left side view showing the magnetic pole teeth portion 7, and FIG. ) Is a right side view showing the magnetic pole tooth portion 7, and FIG. 6E is a bottom view showing the magnetic pole tooth portion 7. FIG. 7 is a view showing the third layer extracted from the coil 5 around which the magnetic tooth portion 7 according to Embodiment 1 of the present invention is wound, and FIG. 7A shows the magnetic tooth portion 7 together. 7 (b) is a top view showing the magnetic pole tooth portion 7, FIG. 7 (c) is a left side view showing the magnetic pole tooth portion 7, and FIG. ) Is a right side view showing the magnetic pole tooth portion 7, and FIG. 7E is a bottom view showing the magnetic pole tooth portion 7. FIG. 8 is an explanatory diagram showing the magnetic pole tooth portion 7 according to the first embodiment of the present invention in the BB cross section of FIG. FIG. 9 is an explanatory view showing the magnetic pole tooth portion 7 according to Embodiment 1 of the present invention in a CC cross section of FIG.

In the winding portion 6, an upper insulator 9 is assembled to the iron core 8 from above, and a lower insulator 10 is assembled to the iron core 8 from below. The winding portion 6 of the magnetic pole tooth portion 7 around which the wire 51 is wound has a rectangular column shape with a rectangular cross section, as shown in FIG. A wire 51 is wound around the winding portion 6 around a pair of

long surfaces

14 and 15 and a pair of

short surfaces

16 and 17. The pair of

long surfaces

14 and 15 of the winding part 6 are a pair of front and back surfaces parallel to the central axis O. Here, the long surface 15 is a surface. The long surface 14 is the back surface. The pair of

short surfaces

16 and 17 of the winding part 6 are formed perpendicular to the pair of

long surfaces

14 and 15. In the winding part 6, the wire 51 is laminated by repeating winding while winding from one end side to the other end side of the winding part 6 and winding while turning from the other end side to the one end side. Thus, the coil 5 is obtained. While winding the single wire 51 in the winding portion 6, it is fed or returned so that the wire 51 moves one pitch each time it is wound once so as to constitute one layer. We are carrying out.

When the first-layer coil 5 shown in FIGS. 5 (a) to 5 (e) is extracted, the coil 5 is collectively 1 on the surface of the right long surface 15 as shown in FIG. 5 (d). Feeding is carried out to move the pitch. For this reason, the wire 51 that is superimposed on the right long surface 15 and becomes the surface portion 5a is disposed obliquely with respect to the central axis O on the long surface 15 of the winding portion 6 so as to perform feeding that moves one pitch. ing. As shown in FIG. 5C, the coil 5 is not fed or returned by the surface portion 5 b of the left long surface 14. For this reason, the wire 51 is arrange | positioned in the parallel straight line along the central axis O in the long surface 14 of the coil | winding part 6 so that it may not move 1 pitch.

Dummy coil portions

9a and 10a are mounted on the upper insulator 9 and the lower insulator 10, respectively. The

dummy coil portions

9a and 10a are guides for arranging the first wire 51 diagonally as the first layer on the long surface 15 on the right side where the wire 51 is obliquely wired.

When the second-layer coil 5 shown in FIGS. 6 (a) to 6 (e) is extracted, the coil 5 is gathered together on the surface portion 5c of the left long surface 14 as shown in FIG. 6 (c). The return is performed so as to move by one pitch. For this reason, the wire 51 which becomes the surface portion 5c overlapped with the left long surface 14 is opposite to the first layer with respect to the central axis O so as to perform the return that moves one pitch opposite to the first layer. It is arranged diagonally. As shown in FIG. 6 (d), the wire 5 is not fed or returned by the surface portion 5 d of the long surface 15 on the right side of the coil 5. For this reason, the wire 51 is arranged on a parallel straight line along the central axis O on the long surface 15 of the winding portion 6.

When the third-layer coil 5 shown in FIGS. 7A to 7E is extracted, the coil 5 is gathered together on the surface portion 5e of the left long surface 14 as shown in FIG. 7C. Feeding is performed so as to move by one pitch. For this reason, the wire 51 which becomes the surface portion 5e overlapped with the left long surface 14 is the same as the first layer with respect to the central axis O so as to carry out feeding that moves one pitch contrary to the second layer, and The second layer is disposed obliquely opposite to the second layer. As shown in FIG. 7 (d), the wire 5 is not fed or returned by the surface portion 5 f of the right long surface 15. For this reason, the wire 51 is arranged on a parallel straight line along the central axis O on the long surface 15 of the winding portion 6.

That is, the wire 51 in the first layer of the coil 5 is wound obliquely with respect to the central axis O on the long surface 15 of the winding part 6, and wound parallel to the central axis O on the long surface 14. Yes. The wire 51 in the second layer adjacent to the first layer is wound parallel to the central axis O on the long surface 15 and is wound obliquely to the central axis O on the long surface 14. That is, the coil 5 is wound around one surface of the four surfaces around which the coil 5 of the winding portion 6 is wound, and the

surface portions

5 a and 5 c that are disposed obliquely so as to move by one pitch, and the winding portion 6 4. The

surface portions

5b and 5d wound around three surfaces of the two surfaces and arranged in a straight line are changed for different layers. More specifically, the coil 5 includes

surface portions

5 a and 5 c that are arranged obliquely so as to move by one pitch by feeding or returning, and

surface portions

5 b and 5 d that are arranged in a straight line, and the coil 5 of the winding portion 6. Are alternately replaced by different layers on a pair of front and back surfaces which are a pair of

long surfaces

14 and 15 around which the wire is wound. In addition, the alternate replacement of the

surface portions

5a and 5b that are arranged obliquely so as to move by one pitch and the

surface portions

5b and 5d that are arranged linearly so as not to move by one pitch, It is performed by the 1st layer and the 2nd layer which start winding.

As a result, in the pair of

long surfaces

14 and 15, the surface portion 5 a that overlaps the right long surface 15 in which the first layer of the coil 5 is arranged obliquely by feeding, the second layer of the coil 5 is arranged in a straight line. . For this reason, on the surface which becomes the long surface 15 on the right side of the winding part 6, the layer in which the coil 5 is wound obliquely and the layer in which the next layer is wound in a straight line intersect the coil 5.

Of the pair of

long surfaces

14 and 15, the second layer surface portion 5 c that overlaps the left long surface 14 in which the first layer of the coil 5 is arranged in a straight line is arranged obliquely by the return of the second layer of the coil 5. Has been. For this reason, on the back surface which becomes the long surface 14 on the left side of the winding part 6, the layer wound in a straight line and the layer wound around the coil 5 in an opposite direction intersect the coil 5.

In the third and subsequent layers of the coil 5, the surface portion (not shown) that is arranged obliquely forward and backward by feeding or returning so as to move by one pitch and the surface portion (not shown) arranged in a straight line are not alternately replaced. In this way, a plurality of layers stacked in succession are arranged so that they move one pitch, and the surface portions arranged obliquely in the forward and reverse directions are overlapped on the same surface of the winding portion 6 so as to move by one pitch. The surface portions arranged on the same are stacked on the same surface of the winding portion 6 so as to be stacked.

That is, the plurality of surface portions overlapping the right long surface 15 arranged in a straight line after the third layer of the coil 5 are arranged in the same straight line as the second layer. In addition, the plurality of surface portions overlapping the long surface 14 on the left side which is arranged diagonally in the forward and reverse directions by moving or returning so as to move one pitch after the third layer of the coil 5 are reversely inclined by returning in the second layer. After the arrangement, the third layer to be overlaid is arranged obliquely by feeding, and thereafter feeding and returning are repeated alternately.

Thus, on the front and back surfaces that form the pair of

long surfaces

14 and 15 of the winding part 6, the layer in which the coil 5 is wound obliquely and the layer in which the coil 5 is wound in a straight line intersect the coil 5. As a result, even if the coil 5 is wound a plurality of times to cause contraction, the coil 5 in the next layer to be superposed regulates the coil 5 in the lower layer even when the coil 5 is present and the coil 5 is bent. Thereby, when the coil 5 is wound, even if a shrinkage occurs and the space between the wire rods 51 becomes unstable, the wire rod 51 can be wound without being disturbed.

In the plurality of surface portions overlapping the right long surface 15 arranged in a straight line after the third layer of the coil 5, the wire material 51 arranged in a straight line is arranged in the space between the adjacent wire materials 51 in the respective lower layers with respect to each layer. ing. As a result, as shown in FIG. 8, the arrangement of the wire 51 overlapped with the pair of

long surfaces

14 and 15 of the winding portion 6 is stacked like a hatching on the right long surface 15 after the third layer. Become. Thereby, it has a structure with a high space factor. Thereby, the effect similar to patent document 1 is acquired by the 3rd layer or later.

Further, as shown in FIG. 9, the arrangement of the coil 5 superimposed on the pair of

short surfaces

16 and 17 of the winding portion 6 is such that the wire 51 is perpendicular to the central axis O like hatching from the first layer. It arrange | positions on the straight line perpendicular | vertical with respect to each of the

surfaces

14 and 15, and is piled up. As a result, the

short surfaces

16 and 17 have a structure with a high space factor that reduces the stacking height of the windings of the coil 5. At the same time, the

short surfaces

16 and 17 serve as guides for the wire 51 wound around the

long surfaces

14 and 15 of the winding portion 6.

<Effect of Embodiment 1>
According to the first embodiment, the stator 4 of the electric motor 2 that is a rotating electric machine is arranged on the inner peripheral side of the yoke portion 4a in the circumferential direction, and is formed with a plurality of magnetic pole teeth portions 7 that protrude from the central axis O direction. Each of the winding portions 6 is obtained by laminating the wire 51 by repeating the winding while winding from one end side to the other end side and the winding while winding from the other end side to the one end side. The coil 5 is provided. The winding part 6 has a long surface 15 which is a pair of surfaces parallel to the central axis O and a long surface 14 which is a back surface. The wire 51 in one layer of the coil 5 is wound obliquely with respect to the central axis O on the surface of the winding part 6 and wound parallel to the central axis O on the back surface. The wire 51 in a layer adjacent to one layer is wound parallel to the central axis O on the front surface, and is wound obliquely with respect to the central axis O on the back surface.

According to this configuration, the coil 5 wound around the long surface 15 that is a pair of surfaces parallel to the central axis O of the winding portion 6 and the long surface 14 that is the back surface is wound obliquely in a predetermined layer and adjacent to each other. The layers are wound in a straight line. For this reason, on the

long surfaces

14 and 15 of the winding part 6, the layer in which the coil 5 is wound obliquely and the layer in which the coil 5 is wound linearly intersect the wire 51. For this reason, even if the wire 51 is loosened and the deflection of the coil 5 occurs, the wire 51 in the next layer of the coil 5 to be superposed regulates the loosened wire 51 in the lower layer of the coil 5. As a result, when the wire 51 is wound, the coil 5 can be formed without being disturbed even if winding shrinkage occurs and the space between the wires 51 becomes unstable. Therefore, the arrangement of the coil 5 having a high space factor can be maintained, and the winding disturbance can be suppressed.

According to Embodiment 1, the winding part 6 has a pair of

short surfaces

16 and 17 formed perpendicular to the long surface 15 which is the front surface and the long surface 14 which is the back surface. The wire 51 is wound perpendicularly to the front and back surfaces of the

short surfaces

16 and 17 of the winding portion 6.

According to this configuration, the coils 5 can be arranged in a stacked manner on the pair of

short surfaces

16 and 17, and the stacking height is reduced. Thereby, arrangement | positioning of the coil 5 with a high space factor is obtained.

According to Embodiment 1, one layer is the first layer. The layer adjacent to one layer is the second layer.

According to this configuration, the wire 51 wound around the long surface 15 which is the surface of the winding part 6 is wound obliquely in the first layer and wound straight in the next layer. Moreover, the wire 51 wound around the long surface 14 which is the back surface of the winding part 6 is wound obliquely in the second layer and wound in a straight line in the first layer. For this reason, in the said front and back of the coil | winding part 6, the layer in which the wire 51 is wound diagonally, and the layer wound in a straight line make the wire 51 cross | intersect. For this reason, even if the wire 51 is loosened and the coil 5 is bent, the wire 51 in the next layer of the coil 5 to be laminated regulates the loosened wire 51 in the lower layer of the coil 5. This effect is particularly effective since the winding contraction of the magnetic teeth portion 7 is remarkable when the first layer or the second layer is wound at the initial stage of winding in which the wire 51 is wound around the winding portion 6. It is. As a result, when the wire 51 is wound, the coil 5 can be formed without being disturbed even if winding shrinkage occurs and the space between the wires 51 becomes unstable. Therefore, the arrangement of the coil 5 having a high space factor can be maintained, and the winding disturbance can be suppressed. Moreover, when the surface part on which the wire 51 is arranged in a straight line in the third and subsequent layers is overlapped on the same surface of the winding part 6, the wire 51 is in a stacked shape. Therefore, the stacking height of the coil 5 can also be reduced, and the space factor can be increased.

According to Embodiment 1, one layer is an odd layer. A layer adjacent to one layer is an even layer.

According to this configuration, even when the wire 51 is wound, winding contraction occurs, and the coil 5 can be formed without being disturbed even if the space between the wires 51 becomes unstable. Therefore, the arrangement of the coil 5 having a high space factor can be maintained, and the winding disturbance can be suppressed.

According to the first embodiment, the winding part 6 has a quadrangular shape whose section in the direction of the central axis O is rectangular. The front and back surfaces are a pair of

long surfaces

14 and 15 of the winding portion 6.

According to this configuration, the wire 51 wound around the long surface 15 which is the surface of the winding part 6 is wound obliquely in the first layer and wound straight in the next layer. Moreover, the wire 51 wound around the long surface 14 which is the back surface of the winding part 6 is wound obliquely in the second layer and wound in a straight line in the first layer. For this reason, in the said front and back of the coil | winding part 6, the layer in which the wire 51 is wound diagonally, and the layer wound in a straight line make the wire 51 cross | intersect. For this reason, even if the wire 51 is loosened and the coil 5 is bent, the wire 51 in the next layer of the coil 5 to be laminated regulates the loosened wire 51 in the lower layer of the coil 5. This effect is particularly effective because the winding and contraction of the magnetic teeth portion 7 on the pair of

long surfaces

14 and 15 long in the longitudinal direction in which the gaps between the thin plates of the magnetic teeth portion 7 are crushed are remarkable. is there. As a result, when the wire 51 is wound, the coil 5 can be formed without being disturbed even if winding shrinkage occurs and the space between the wires 51 becomes unstable. Therefore, the arrangement of the coil 5 having a high space factor can be maintained, and the winding disturbance can be suppressed.

According to the first embodiment, the one layer and the layers after the layer adjacent to the one layer are continuous with one layer or the layer adjacent to the one layer, and the front surface or the back surface is centered on the central axis O. The wire 51 wound in parallel with each other is in a piled shape.

According to this configuration, the surface portions on which the wire rods 51 are arranged in a straight line are overlapped on the same surface of the winding portion 6, and the wire rods 51 are stacked. Therefore, the stacking height of the coil 5 can also be reduced, and the space factor can be increased.

According to the first embodiment, the electric motor 2 that is a rotating electric machine includes the stator 4.

According to this configuration, the electric motor 2 is provided with the stator 4 that can maintain the arrangement of the coil 5 having a high space factor and suppress the winding disturbance.

According to the first embodiment, the compressor 100 includes the electric motor 2 that is a rotating electric machine.

According to this configuration, the compressor 100 is provided with the electric motor 2 that can maintain the arrangement of the coil 5 having a high space factor and suppress the turbulence.

<Other examples of Embodiment 1>
According to the first embodiment, the one layer described above is an even layer. A layer adjacent to one layer is an odd layer.

Embodiment 2. FIG.
In the first embodiment, the surface portion disposed obliquely with respect to the central axis O so that the wire 51 moves by one pitch and the straight line parallel to the central axis O so that the wire 51 does not move by one pitch are arranged. Alternating replacement with the surface portion is performed at the time of the first layer and the second layer. However, such alternate replacement of the mutual surface portions may be performed after the third layer. Other configurations are the same as those in the above embodiment, and thus description thereof is omitted.

<Effect of Embodiment 2>
According to the second embodiment, the one layer is a third layer or later.

According to this configuration, the wire 51 wound around one surface of the winding part 6 is wound obliquely in a predetermined layer after the third layer and wound in a straight line in the next layer. Further, the wire 51 wound around another surface of the winding portion 6 is wound obliquely in a layer different from the predetermined layer after the third layer, and is wound straight in the lower layer. . For this reason, on a predetermined surface of the winding part 6, the layer in which the wire 51 is wound obliquely and the layer in which the wire 51 is wound in a straight line intersect the wire 51. For this reason, even if the wire 51 is loosened and the coil 5 is bent, the wire 51 in the next layer of the coil 5 to be laminated regulates the loosened wire 51 in the lower layer of the coil 5. As a result, when the wire 51 is wound, the coil 5 can be formed without being disturbed even if winding shrinkage occurs and the space between the wires 51 becomes unstable. Therefore, the arrangement of the coil 5 having a high space factor can be maintained, and the winding disturbance can be suppressed.

Embodiment 3 FIG.
In the first and second embodiments, the surface portion arranged obliquely with respect to the central axis O so that the wire 51 moves by one pitch and the straight line parallel to the central axis O so that the wire 51 does not move by one pitch. Replacement with the surface portion to be arranged is performed once. However, such alternate replacement of the surface portions may be repeated a plurality of times. Other configurations are the same as those in the above embodiment, and thus description thereof is omitted.

<Effect of Embodiment 3>
According to the third embodiment, the one layer and the layer adjacent to one layer are a plurality of layers.

According to this configuration, the wire 51 wound on one surface of the winding part 6 is wound obliquely in a predetermined layer and wound straight in the next layer. Moreover, the wire 51 wound around another surface of the winding part 6 is wound obliquely in a layer different from the predetermined layer, and wound in a straight line in the lower layer. Further, the state in which the wire 51 is wound in this way is formed in a plurality of layers of the coil 5. For this reason, on a predetermined surface of the winding part 6, the layer in which the wire 51 is wound obliquely and the layer in which the wire 51 is wound in a straight line intersect the wire 51. For this reason, even if the wire 51 is loosened and the coil 5 is bent, the wire 51 in the next layer of the coil 5 to be laminated regulates the loosened wire 51 in the lower layer of the coil 5. This regulation is implemented in a plurality of layers, and the correction force can be further improved. As a result, when the wire 51 is wound, the coil 5 can be formed without being disturbed even if winding shrinkage occurs and the space between the wires 51 becomes unstable. Therefore, the arrangement of the coil 5 having a high space factor can be maintained, and the winding disturbance can be suppressed.

In the first to third embodiments of the present invention, the winding portion 6 of the stator 4 has a rectangular column shape with a rectangular cross section, and the pair of

long surfaces

14 and 15 suppress the winding disturbance. However, it is not limited to this. The winding portion 6 of the stator 4 may be a quadrangular prism having a rectangular cross section, and the pair of

short surfaces

16 and 17 may suppress winding disturbance. Further, the winding disturbance may be suppressed not for the front and back surfaces of the winding portion 6 but for each of the other surfaces.

In the first to third embodiments of the present invention, the winding portion 6 of the stator 4 has been described as having a rectangular column shape with a rectangular cross section. However, it is not limited to this. For example, the cross section of the winding part 6 may be formed by chamfering a square corner, or the corner may be formed into an R-shaped curved surface. Moreover, the cross section of the winding part 6 is not limited to a rectangle, and may be various quadrangular shapes such as a square, a trapezoid, and a parallelogram. In addition, the four surfaces around which the coil 5 of the winding part 6 is wound may be flat. However, the winding surface 6 may have a shape similar to a square shape, for example, by four surfaces on which the coil 5 of the winding portion 6 is wound having curved surfaces, deformations, or spaces.

Embodiment 4 FIG.
<Refrigeration cycle apparatus 200>
FIG. 10 is a refrigerant circuit diagram showing a refrigeration cycle apparatus 200 to which the compressor 100 according to Embodiment 4 of the present invention is applied.

As shown in FIG. 10, the refrigeration cycle apparatus 200 includes a compressor 100, a condenser 201, an expansion valve 202, and an evaporator 203. The compressor 100, the condenser 201, the expansion valve 202, and the evaporator 203 are connected by a refrigerant pipe to form a refrigeration cycle circuit. And the refrigerant | coolant which flowed out from the evaporator 203 is suck | inhaled by the compressor 100, and becomes high temperature / high pressure. The high-temperature and high-pressure refrigerant is condensed in the condenser 201 to become a liquid. The refrigerant that has become liquid is decompressed and expanded by the expansion valve 202 to form a low-temperature and low-pressure gas-liquid two-phase, and the gas-liquid two-phase refrigerant is heat-exchanged in the evaporator 203.

The compressor 100 according to the first to third embodiments can be applied to such a refrigeration cycle apparatus 200. Note that examples of the refrigeration cycle apparatus 200 include an air conditioner, a refrigeration apparatus, and a water heater.

<Effect of Embodiment 4>
The refrigeration cycle apparatus 200 includes the compressor 100 described in the first to third embodiments.

According to this configuration, the refrigeration cycle apparatus 200 including the compressor 100 is not disturbed even when the wire 51 is wound, even when the wire 51 is wound and the space between the wires 51 becomes unstable. The coil 5 can be formed. Therefore, the arrangement of the coil 5 having a high space factor can be maintained, and the winding disturbance can be suppressed.

1 shell, 2 motor, 2a rotor, 3 compression mechanism, 4 stator, 4a yoke part, 5 coil, 5a face part, 5b face part, 5c face part, 5d face part, 5e face part, 5f face part, 6 winding part, 7 magnetic pole teeth Part, 8 iron core, 9 upper insulator, 9a dummy coil part, 10 lower insulator, 10a dummy coil part, 11 magmate, 12 jumper wire, 13 lead wire, 14 long surface, 15 long surface, 16 short surface, 17 short Surface, 51 wire rod, 100 compressor, 200 refrigeration cycle apparatus, 201 condenser, 202 expansion valve, 203 evaporator.

Claims

Winding while turning from one end side to the other end side of each winding portion of the plurality of magnetic pole teeth portions arranged in the circumferential direction on the inner peripheral side of the yoke portion and protruding in the central axis direction; A stator of a rotating electrical machine including a coil obtained by laminating wires by repeating winding while winding from the other end side to the one end side,
The winding portion has a pair of front and back surfaces parallel to the central axis,
The wire in one layer of the coil is wound obliquely with respect to the central axis on the surface of the winding portion, and wound parallel to the central axis on the back surface,
The wire rod in a layer adjacent to the one layer is wound in parallel with the central axis on the front surface, and is a stator of a rotating electrical machine wound obliquely with respect to the central axis on the back surface.
The winding portion has a pair of short surfaces formed perpendicular to the front surface and the back surface,
The stator of a rotating electrical machine according to claim 1, wherein the wire is wound perpendicularly to each of the front surface and the back surface on a short surface of the winding portion.
The one layer is a first layer;
The stator of the rotating electrical machine according to claim 1, wherein the layer adjacent to the one layer is a second layer.
The one layer is an odd layer;
The stator of the rotating electrical machine according to claim 1, wherein the layer adjacent to the one layer is an even layer.
The one layer is an even layer;
The stator for a rotating electrical machine according to claim 1, wherein the layer adjacent to the one layer is an odd-numbered layer.
The stator for a rotating electric machine according to claim 4 or 5, wherein the one layer is a third layer or later.
The stator for a rotating electrical machine according to any one of claims 4 to 6, wherein the one layer and a layer adjacent to the one layer are a plurality of layers.
The winding portion has a rectangular shape with a rectangular cross section in the central axis direction,
The stator for a rotating electrical machine according to any one of claims 1 to 7, wherein the front surface and the back surface are a pair of long surfaces of the winding portion.
The one layer and subsequent layers adjacent to the one layer are continuous with the one layer or the layer adjacent to the one layer, and are wound parallel to the central axis on the front surface or the back surface. The stator of a rotating electric machine according to any one of claims 1 to 8, wherein the rotated wire rods are stacked.
A rotary electric machine comprising the rotary electric machine stator according to any one of claims 1 to 9.
A compressor provided with the rotating electrical machine according to claim 10.
A refrigeration cycle apparatus comprising the compressor according to claim 11.