JP2000232759A - Winding method for motor stator for compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a winding method in which the cross-sectional area of a winding slot is used effectively and the deformation and damages due to magnetization after assembling of a part corresponding to the inner side in the radial direction of a magnetic pole tooth in an insulating frame are prevented. SOLUTION: Regarding the back-and-forth movement M3 of a nozzle 4 in a winding machine, an outside winding position P and an inside winding position Q on the outermost side and the innermost side in the radial direction of magnetic pole teeth 12 are set, and an intermediate winding position R between the winding position P and the winding position Q is set. First, as a first winding process W1, during the back-and- forth movement M3 of the nozzle 4 between the outside winding position P and the inside winding position Q, a winding operation at e.g. about 10 to 90% of the total winding amount is performed. Then, as a second winding process W2, during the back-and-forth movement M3 of the nozzle 4 between the outside winding position P and the first intermediate winding position R, a winding operation for the remaining winding amount is performed. Thereby, from the upper part of a nearly uniform winding 25 by the first winding process W1, a winding 26 whose winding amount is more on the outside than on the inside in the radial direction of the magnetic pole teeth is executed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding method for directly winding a coil on each magnetic pole tooth of a motor stator for a compressor. The present invention relates to a method of winding a motor stator for a compressor in which a wire is sequentially wound around each magnetic pole tooth by movement.

[0002]

2. Description of the Related Art FIGS. 3 and 4 show a general compressor motor stator to which the present invention is applied. The motor stator 1 shown in FIG. 3 includes a stator core 10 having a plurality of magnetic pole teeth 12 arranged at intervals in the circumferential direction. The coils 2 are mounted on the respective magnetic pole teeth 12 of the stator core 10 via insulating frames 3 as shown in FIGS.

As shown in FIG. 5, each magnetic pole tooth 12 has a main rod portion 12a extending radially inward from a yoke core 14 (see FIG. 3), and an inner pole formed on the distal end side of the main rod portion 12a. And a peripheral portion 12b. The insulating frame 3 is attached so as to cover the inner surface of a portion (winding slot) 16 of the stator core 10 substantially surrounded by the yoke core 14 and the magnetic pole teeth 12.

Next, the operation of a winding machine for directly winding a coil (via the insulating frame 3) on each magnetic pole tooth 12 of the motor stator 1 will be described with reference to FIGS. It is shown. As shown in FIGS. 6 to 8, the winding machine includes a movable nozzle 4 that leads out a wire 20 for coil winding. The winding machine is configured such that the nozzle 4 is inserted into the gap between the inner peripheral portions 12 b of the adjacent magnetic pole teeth 12, and the magnetic pole teeth 12 are wound from inside the stator core 10. .

In this winding machine, a vertical movement M1 (see FIGS. 7 and 8) reciprocating in the axial direction of the stator 1 and an oscillating movement reciprocating in the circumferential direction of the stator 1 are performed. M2
M2 '(see FIGS. 6 and 8) and a longitudinal movement M3 (see FIG. 6) which reciprocates in the radial direction of the stator 1 can be operated in three directions.

Using such a winding machine, the vertical movement M1 and the oscillation M of the nozzle 4 are shifted while the winding position in the radial direction is shifted by the longitudinal movement M3 of the nozzle 4 (see FIG. 6).
2, M2 ', and a winding method of sequentially winding the wire 20 around each magnetic pole tooth 12 (see FIG. 8).

[0007]

By the way, conventionally, the nozzle 4 is not moved back and forth M3 as described above,
The winding method in which the winding is performed by fixing the position in the radial direction at one position is also adopted. Further, even in the case of performing the forward and backward movement M3 of the nozzle 4, between the outermost outer winding position P and the innermost inner winding position Q in the radial direction of the magnetic pole teeth 12 shown in FIG.
The winding is performed by moving the nozzle 4 back and forth at a constant speed M3.

In such a conventional winding method, windings of approximately the same number (number of turns) are formed on the inside and outside in the radial direction of each magnetic pole tooth 12, or more windings are provided on the inside than on the outside. Will be drawn.

However, as shown in FIGS. 5 and 6, the winding slot 16 between the adjacent magnetic pole teeth 12 has a larger cross-sectional area outside the magnetic pole teeth 12 than in the radial direction. ing. For this reason, the conventional winding method cannot effectively use the cross-sectional area of the entire winding slot 16.

After the motor is assembled, a magnetizing current flows through the coil 2 of the stator 1 to magnetize a magnet provided on a rotor disposed on the inner periphery of the stator (so-called built-in magnetizing). ), The electromagnetic force acting between the windings of the adjacent coils 2 due to the magnetizing current increases as the interval between the windings of the adjacent coil 2 decreases and the number of windings increases.

In the conventional winding method, each magnetic pole tooth 1
In the radial inner side, the same amount or more windings are formed as the outer side, and the spacing between the windings of the adjacent coils 2 becomes smaller on the inner side, so that the inner side winding has a larger electromagnetic force. The force will act.

For this reason, the portion corresponding to the radially inner side of the magnetic pole teeth 12 in the insulating frame 3 (the magnetic pole teeth shown in FIG. There is a possibility that the inner peripheral flange portion 31) of the insulating frame 3 corresponding to the inner peripheral portion 12b of the inner 12 may be deformed or damaged.

The present invention has been made in view of such a point, and effectively utilizes the cross-sectional area of the winding slot, and incorporates the above-described portion of the insulating frame corresponding to the radially inner side of the magnetic pole teeth. It is an object of the present invention to provide a method of winding a stator of a motor for a compressor that can prevent deformation and breakage due to magnetization.

[0014]

A first means is a winding method for directly winding a coil on each magnetic pole tooth of a compressor motor stator having a plurality of magnetic pole teeth extending in a radial direction. The nozzle for deriving a wire for coil winding is moved up and down to reciprocate in the axial direction of the stator, swinging to reciprocate relatively in the circumferential direction of the stator, and before and after reciprocating in the radial direction of the stator. Using a winding machine capable of moving the nozzle, the wire material is sequentially wound around each magnetic pole tooth by a combination of up and down movement and swinging of the nozzle while shifting the winding position in the radial direction by forward and backward movement of the nozzle. In addition, by adjusting the longitudinal movement of the nozzle at the time of this winding, the outer side of each magnetic pole tooth is wound more than the inner side in the radial direction. It is a winding method of a motor stator.

According to the first means, the winding of the magnetic pole teeth on the outer side is made larger than that on the inner side in the radial direction, so that the winding slot between the adjacent magnetic pole teeth is cut off. Area can be used effectively. Further, when a magnetizing current is supplied to the stator coil after assembling the motor to magnetize the magnet provided on the rotor arranged on the inner peripheral portion of the stator, the magnetizing current is applied to the adjacent coil by the magnetizing current. Can be made relatively small on the radially inner side of each magnetic pole tooth.

A second means is the first means, wherein the outermost and innermost inner winding positions in the radial direction of the magnetic pole teeth with respect to the longitudinal movement of the nozzle;
While setting an intermediate winding position between the outer winding position and the inner winding position, a predetermined winding is performed while moving the nozzle back and forth between the outer winding position and the inner winding position. A first winding step of winding a dose, and after the first winding step, while moving the nozzle back and forth between the outer winding position and the intermediate winding position, the remaining winding amount And a second winding step of performing winding.

According to the second means, the winding is performed substantially uniformly from the inside to the outside in the radial direction of the magnetic pole teeth by the first winding step. In the second winding step, a winding having a larger winding amount is formed on the outer side of the magnetic pole teeth than on the inner side in the radial direction. Therefore,
By the first winding step and the second winding step, the outer periphery of each magnetic pole tooth is generally wound more than the inner periphery in the radial direction.

The third means is the second means, wherein the winding amount in the first winding step is set to 10 to 90% of the total winding amount.
It is a percentage.

A fourth means is to fix the nozzle at the outer winding position in the second winding step of the second means.

Fifth means is the first means, wherein the outermost and outermost inner winding positions in the radial direction of the magnetic pole teeth with respect to the longitudinal movement of the nozzle,
Between the outer winding position and the inner winding position, two or more intermediate winding positions sequentially approaching the outer winding position side are set, and the nozzle is moved to the outer winding position and the inner winding position. A first winding step of winding a predetermined winding amount while moving back and forth between n and n, where n is an integer of 2 or more,
After the first winding step, the second to (n +
1) a winding step, wherein i is a natural number less than n, and in the (i + 1) th winding step, the nozzle is moved back and forth between the outer winding position and the i-th intermediate winding position. In the (n + 1) th winding step, the nozzle is moved to the outer winding position and the nth intermediate winding in the (n + 1) th winding step. The winding of the remaining winding amount after the n-th winding step is performed while moving back and forth between the positions.

According to the fifth means, the first winding step performs winding substantially uniformly from the inside to the outside in the radial direction of the magnetic pole teeth. , Through the second to (n + 1) th winding steps, windings having a larger winding amount on the outer side than on the inner side in the radial direction of the magnetic pole teeth are sequentially formed. Therefore, by the first to (n + 1) th winding steps, the outermost of the magnetic pole teeth is wound more than the innermost in the radial direction as a whole. Further, by dividing the winding step into three or more steps, the alignment of the windings can be improved as compared with the case where the winding step is divided into two steps.

A sixth means is the fifth means, wherein the winding amount in the first winding step is set to 10 to 90% of the total winding amount.
And the winding amount in the (i + 1) th winding step is 10 to 90% of the remaining winding amount after the i-th winding step.

The seventh means is the (n + 1) th means of the fifth means.
In the winding step, the nozzle is fixed at the outer winding position.

The eighth means is the (i + 1) th of the fifth means.
In the winding step, the nozzle is fixed at the i-th intermediate winding position.

[0025]

Next, an embodiment of the present invention will be described with reference to the drawings. 1 and 2 are views showing an embodiment of a method for winding a stator of a motor for a compressor according to the present invention. In the embodiment of the present invention shown in FIGS. 1 and 2, the same components as those of the general compressor motor stator, the winding machine and the winding method shown in FIGS. And description will be made with reference to FIGS. 3 to 8 as appropriate.

[First Embodiment] First, a first embodiment of the present invention will be described with reference to FIGS. 1 and 3 to 8. 3 and 4 show a general compressor motor stator to which the present invention is applied. A motor stator 1 shown in FIG. 3 includes a plurality of (in this case, six poles) magnetic pole teeth 12 arranged at intervals in a circumferential direction, and a yoke core 14 connecting the outer peripheral sides of these magnetic pole teeth 12. Stator core 1 having
0 is provided. The coils 2 are mounted on the respective magnetic pole teeth 12 of the stator core 10 via insulating frames 3 as shown in FIGS.

As shown in FIG. 5, each magnetic pole tooth 12 includes a main rod portion 12a extending radially inward from the yoke core 14 and an inner peripheral portion 12b formed at the tip end of the main rod portion 12a. Have. The insulating frame 3 is attached so as to cover the inner surface of a portion (winding slot) 16 of the stator core 10 substantially surrounded by the yoke core 14 and the magnetic pole teeth 12. That is, the insulating frame 3 includes a hollow web portion 30 that covers the main rod portion 12a of each magnetic pole tooth 12, an inner peripheral flange portion 31 that covers the outer peripheral portion 12b of each magnetic pole tooth 12, and an inside of the yoke core 14. And an outer peripheral flange portion 32 for covering.

Next, the operation of the winding machine for directly winding a coil (via the insulating frame 3) on each magnetic pole tooth 12 of the motor stator 1 will be described with reference to FIGS. It is shown. As shown in FIGS. 6 to 8, the winding machine includes a movable nozzle 4 that leads out a wire 20 for coil winding. The winding machine is configured such that the nozzle 4 is inserted into the gap between the inner peripheral portions 12 b of the adjacent magnetic pole teeth 12, and the magnetic pole teeth 12 are wound from inside the stator core 10. .

In this winding machine, the nozzle 4 moves up and down M1 (see FIGS. 7 and 8) reciprocating in the axial direction of the stator 1 and swinging reciprocating in the circumferential direction of the stator 1. Dynamic M
2, M2 '(see FIGS. 6 and 8) and a forward and backward movement M3 (see FIG. 6) reciprocating in the radial direction of the stator 1 can be operated in three directions. Of these, the oscillations M2 and M2 'of the nozzle 4 are performed when the nozzle 4 itself is reciprocated M2 in the circumferential direction with respect to the stator 1, and when the nozzle 4 is rotated around the axis without moving the nozzle 4 itself. In some cases, the motion M2 'is performed.

The winding method according to the present embodiment basically uses the above-described winding machine to move the nozzle 4 back and forth M
3 while the winding position in the radial direction is shifted (see FIG. 6) by the combination of the vertical movement M1 of the nozzle 4 and the swings M2 and M2 ', the wire 20 is wound around (the main rod portion 12a of) each magnetic pole tooth 12. (See FIG. 8) sequentially (while pulling out from the nozzle 4).

Here, the winding method of the present embodiment adjusts the longitudinal movement M3 of the nozzle 4 at the time of the above-described winding, so that each magnetic pole tooth 12 is located outside the radially inner side. Is configured to be wound more.

Specifically, as shown in FIG. 1 in advance, with respect to the longitudinal movement M3 of the nozzle 4, the outermost outer winding position P and the innermost inner winding position Q in the radial direction of the magnetic pole teeth 12, and An intermediate winding position R between the outer winding position P and the inner winding position Q is set.

First, as the first winding step W1, while the nozzle 4 is moved back and forth M3 between the outer winding position P and the inner winding position Q, for example, 10 to 90% of the total winding amount is wound. I do. Next, after the first winding step W1, as a second winding step W2, while moving the nozzle 4 back and forth M3 between the outer winding position P and the intermediate winding position R, the remaining winding amount is reduced. Perform winding.

In the second winding step W2, the position in which the nozzle 4 is moved back and forth may be fixed at the outer winding position P.

Next, the operation and effect of this embodiment having the above configuration will be described. According to the present embodiment, as shown in FIG. 1 (b), the first winding step W1 allows the winding 25 to be substantially uniformly from the inside to the outside in the radial direction of the magnetic pole teeth.
From the top of the windings 25 in the first winding step W1, the windings 26 having a larger winding amount (number of turns) on the outer side than on the inner side in the radial direction of the magnetic pole teeth are formed by the second winding step W2. Done.

Accordingly, by the above-described first winding step W1 and second winding step W2, the outer periphery of each magnetic pole tooth 12 is wound more than the inner side in the radial direction as a whole. By effectively using the cross-sectional area of the winding slot 16 between the twelve 12, the number of turns of the coil winding can be increased.

After the motor is assembled, a magnetizing current is passed through the coil 2 of the stator 1 to magnetize a magnet provided on a rotor disposed on the inner periphery of the stator (so-called built-in magnetizing). ), The electromagnetic force acting between the windings of the adjacent coils 2 due to the magnetizing current can be made relatively smaller on the radially inner side of each magnetic pole tooth 12. Accordingly, it is possible to prevent the inner peripheral flange portion (the portion corresponding to the radially inner side of the magnetic pole teeth 12) 31 of the insulating frame 3 from being deformed or damaged due to the above-described built-in magnetization.

[Second Embodiment] Next, a second embodiment of the present invention will be described with reference to FIG. In this embodiment,
As shown in FIG. 2, the second winding step W2 is further divided into two steps, and the first winding step W2 is divided into three steps.
Unlike the first embodiment, the other configuration is the same as that of the first embodiment shown in FIGS. 1 and 3 to 8.

More specifically, as shown in FIG. 2 in advance, the first and second movements M3 of the nozzle 4 sequentially approach the outer winding position P between the outer winding position P and the inner winding position Q. An intermediate winding position R1 and a second intermediate winding position R2 are set.

Then, the same first embodiment as in the first embodiment is performed.
After the winding process W1, as a second winding process W2 ′, the nozzle 4 is moved back and forth M3 between the outer winding position P and the first intermediate winding position R1 while the first winding process W1 is performed. Of the remaining winding amount is performed. Next, after the second winding step W2 ′, as a third winding step W3, the nozzle 4
Is moved forward and backward M3 between the outer winding position P and the second intermediate winding position R2, and the remaining winding amount after the second winding process W2 'is performed.

In this embodiment, the winding amount in the first winding step W1 is, for example, 10 to 90% of the total winding amount, and the winding amount in the second winding step W2 'is, for example, the first winding amount. The remaining winding amount after the process W1 is 10 to
90 percent.

Further, in the third winding step W3, the longitudinal movement position of the nozzle 4 may be fixed to the outer winding position P. In the second winding step W2 ', the longitudinal movement position of the nozzle 4 may be fixed. It may be fixed to the intermediate winding position R1.

Next, the operation and effect of this embodiment having the above configuration will be described. According to the present embodiment, as shown in FIG. 2 (b), the first winding step W1 allows the winding 27 to be substantially uniform from the inside to the outside in the radial direction of the magnetic pole teeth.
From the top of the winding 27 in the first winding step W1, the winding amount is larger in the outside than in the radial direction of the magnetic pole teeth sequentially in the second and third winding steps W2 'and W3. The windings 28, 29 are made.

Accordingly, in the first to third winding steps W1 to W3, the outer side of each magnetic pole tooth 12 as a whole is wound more than the inner side in the radial direction, and the same as in the first embodiment. The effect can be achieved. Further, in the present embodiment, by dividing the winding process into three stages, it is possible to improve the alignment of the windings as compared with the case where the winding process is divided into two stages as in the first embodiment.

In this embodiment, the winding process is performed in three steps.
Although the case where the winding process is divided into stages has been described, the winding process can be further divided into four or more stages to further improve the winding alignment. When the winding method divided into three or more stages is generalized, it is defined as a method including the following first to (n + 1) th winding steps, where n is an integer of 2 or more.

First, two or more intermediate winding positions which sequentially approach the outer winding position P between the outer winding position P and the inner winding position Q are set in advance with respect to the longitudinal movement M3 of the nozzle 4. Then, as a first winding step, winding of a predetermined winding amount is performed while moving the nozzle 4 back and forth M3 between the outer winding position P and the inner winding position Q. Next, after the first winding step, the second to (n + 1) th winding steps are sequentially performed.

The second to (n + 1) th winding steps are further defined as follows. That is, assuming that i is a natural number less than n, in the (i + 1) th winding step (second to nth winding steps), the nozzle 4 is moved between the outer winding position P and the i-th intermediate winding position. A part of the remaining winding amount after the i-th winding process is performed while the forward and backward movement M3 is performed.

In the (n + 1) th winding step,
While the nozzle 4 is moved back and forth M3 between the outer winding position P and the nth intermediate winding position, winding of the remaining winding amount after the nth winding step is performed.

According to the above-described winding method, the winding is performed substantially uniformly from the inside to the outside in the radial direction of the magnetic pole teeth in the first winding step. From the top, the second to (n + 1) th winding steps sequentially form windings having a larger winding amount on the outside than on the inside in the radial direction of the magnetic pole teeth. Therefore, by the first to (n + 1) th winding steps, the outermost of the magnetic pole teeth is wound more than the innermost in the radial direction as a whole.

Also in this case, the winding amount in the first winding step is, for example, 10 to 90% of the total winding amount, and the winding amount in the (i + 1) th winding step is, for example, after the i-th winding step. Is 10 to 90% of the remaining winding amount.

In the (n + 1) th winding step, the longitudinal movement position of the nozzle 4 may be fixed to the outer winding position P. In the (i + 1) th winding step, the nozzle 4
May be fixed to the i-th intermediate winding position.

[0052]

According to the present invention, the outer peripheral portion of each magnetic pole tooth is wound more than the inner side in the radial direction, so that the sectional area of the winding slot between adjacent magnetic pole teeth is increased. Can be used effectively to increase the number of turns of the coil winding.

After the motor is assembled, a magnetizing current is passed through the coils of the stator to magnetize the magnets (so-called built-in magnetisation) provided on the rotor arranged on the inner periphery of the stator. In this case, the electromagnetic force acting between the windings of the adjacent coils due to the magnetizing current can be made relatively smaller on the radially inner side of each magnetic pole tooth. Therefore, when attaching an insulating frame for winding a coil to each magnetic pole tooth, deformation or breakage of the portion corresponding to the radially inner side of the magnetic pole tooth in the insulating frame due to the built-in magnetization as described above is taken into consideration. Can be prevented.

[Brief description of the drawings]

FIG. 1 is a view showing a first embodiment of a winding method of a motor stator for a compressor according to the present invention, wherein (a) is a schematic view showing a longitudinal movement range of a nozzle in each winding step, b)
FIG. 3 is a diagram schematically showing a winding state with respect to magnetic pole teeth on a partial plane of a stator.

FIG. 2 is a view showing a second embodiment of a method for winding a motor stator for a compressor according to the present invention, in which (a) is a schematic view showing the longitudinal movement range of a nozzle in each winding step, b)
FIG. 3 is a diagram schematically showing a winding state with respect to magnetic pole teeth on a partial plane of a stator.

FIG. 3 is a plan view showing a general motor stator for a compressor to which the present invention is applied.

FIG. 4 is a longitudinal sectional view of the motor stator shown in FIG. 3;

FIG. 5 is a diagram showing the shape of magnetic pole teeth and an insulating frame of the motor stator shown in FIG. 3 in a cross section of a stator core;

FIG. 6 is a diagram showing an operation of a nozzle in a general winding machine to which the present invention is applied, in a partial plane of a stator.

FIG. 7 is a view showing the operation of the nozzle in the winding machine shown in FIG. 6 in a partial longitudinal section of the stator.

FIG. 8 is a view showing the operation of the nozzle in the winding machine shown in FIG. 6 in a cross section taken along line AA of FIG. 4;

[Explanation of symbols]

REFERENCE SIGNS LIST 1 Motor stator for compressor 10 Stator iron core 12 Magnetic pole teeth 14 Yoke iron core 16 Winding slot 2 Coil 3 Insulating frame 31 Inner peripheral flange portion (part corresponding to radial inside of magnetic pole teeth) 4 Winding machine nozzle Reference Signs List 20 wire for coil winding 25, 27 Winding in first winding step 26, 28 Winding in second winding step 29 Winding in third winding step P Outer winding position Q Inner winding position R Middle Winding position R1 First intermediate winding position R2 Second intermediate winding position W1 First winding process W2, W2 'Second winding process W3 Third winding process

Claims (8)

[Claims] 1. A winding method for directly winding a coil on each magnetic pole tooth of a motor stator for a compressor having a plurality of magnetic pole teeth extending in a radial direction, comprising a wire for coil winding. Using a winding machine capable of vertically moving the nozzle to reciprocate in the axial direction of the stator, swinging reciprocating relatively in the circumferential direction of the stator and reciprocating in the radial direction of the stator, While shifting the winding position in the radial direction by the forward and backward movement of the nozzle, the wire rod is sequentially wound around each magnetic pole tooth by a combination of up and down movement and swinging of the nozzle, and at the time of this winding, A winding method for an electric motor stator for a compressor, characterized in that by adjusting the forward and backward movement of a nozzle, more magnetic pole teeth are wound on the outer side than on the inner side in the radial direction. 2. The front-rear movement of the nozzle, wherein the outermost and innermost winding positions in the radial direction of the magnetic pole teeth are located between the outer and inner winding positions. A first method of setting an intermediate winding position and performing winding of a predetermined winding amount while moving the nozzle back and forth between the outer winding position and the inner winding position.
A winding step; and after the first winding step, a second winding for winding the remaining winding amount while moving the nozzle back and forth between the outer winding position and the intermediate winding position. The method of claim 1, further comprising the steps of: 3. The method according to claim 2, wherein the winding amount in the first winding step is 10 to 90% of the total winding amount. 4. The method according to claim 2, wherein in the second winding step, the nozzle is fixed to the outer winding position.
A method for winding a motor stator for a compressor according to the above description. 5. A front-rear movement of the nozzle, wherein a radially outermost innermost winding position and an innermost innermost winding position of the magnetic pole teeth and a position between these outer and inner winding positions are defined. While setting two or more intermediate winding positions sequentially approaching the outer winding position side, while moving the nozzle back and forth between the outer winding position and the inner winding position, a predetermined winding amount First winding
A winding step; and a second to (n + 1) th winding step sequentially performed after the first winding step, where n is an integer of 2 or more, where i is a natural number less than n and (i + 1) In the winding step, while the nozzle is moved back and forth between the outer winding position and the i-th intermediate winding position, a part of the remaining winding amount after the i-th winding step is changed. In the (n + 1) th winding step, while moving the nozzle back and forth between the outer winding position and the nth intermediate winding position, the remaining winding amount after the nth winding step The winding method of a motor stator for a compressor according to claim 1, wherein the winding is performed. 6. The winding amount in the first winding step is 10 to 90% of the total winding amount, and the winding amount in the (i + 1) th winding step is the remaining winding amount after the i-th winding step. The method for winding a motor stator for a compressor according to claim 5, wherein the ratio is 10 to 90%. 7. The method according to claim 5, wherein in the (n + 1) th winding step, the nozzle is fixed to the outer winding position. 8. The method according to claim 5, wherein in the (i + 1) th winding step, the nozzle is fixed to an i-th intermediate winding position.