JP2014180092A - Rotor for salient-pole type rotary electric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotor for a salient-pole type rotary electric machine capable of constructing a ventilation flue for cooling a field coil in a simple configuration.SOLUTION: A rotor for a salient-pole type rotary electric machine comprises: a rotor core in which a plurality of field pole bodies and field pole heads are formed and a number of thin steel plates each including a shaft hole formed in the center are laminated as a block to configure a field pole core; and a field coil wound around the field pole bodies of the rotor core. A cooling fin is provided which is configured in a structure integrated with the steel plates of the rotor core configuring the field pole core and opposes the field pole heads, and a ventilation flue for cooling is formed from the cooling fin.

Description

  The present invention relates to, for example, a rotor of a salient pole type rotating electric machine, and in particular, a salient pole magnetic core is formed by laminating a thin plate having a pole body and a magnetic pole head provided at the tip of the pole body. In addition, the present invention relates to a rotor of a salient pole type rotating electrical machine in which a field coil is wound around a laminated magnetic pole body.

  In the rotor of the salient pole type rotating electric machine, a device has been devised to enhance the alignment of the field coils and to improve the cooling performance of the field coils. Since the field coil of the rotor of the salient pole type rotating electric machine generates heat due to the field current, it must be cooled effectively. In order to improve the cooling performance of a rotor of a conventional salient pole type rotating electric machine, as a conventional technique, for example, in Japanese Utility Model Registration No. 25869921, a coil receiver, which is a field coil receiver, is provided on the shaft side support of a field coil. It is installed at the time of winding work, and a cooling air passage for the field coil is constructed.

Utility Model Registration No. 25869921

  In the rotor of the above-described conventional salient pole type rotating electric machine, a coil receiver, which is a field coil receiver, is attached to the axial support of the field coil at the time of winding work, and a cooling air passage for the field coil is constructed. Therefore, it is necessary to manufacture the coil receiver as separate parts, and there is a problem that the number of components increases.

  Further, the rotor of the conventional salient pole type rotating electrical machine has a problem that the structure of the coil receiver becomes complicated because the coil receiver needs to be fixed to the salient pole magnetic core.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a rotor of a salient pole type rotating electrical machine capable of constructing a cooling air passage for a field coil with a simple configuration. It is to provide.

  The rotor of the salient pole type rotating electrical machine according to the present invention is formed by stacking a number of thin steel plates each having a plurality of field pole body portions and field pole head portions and having a shaft hole formed in the center portion. A rotor of a salient pole type rotating electric machine having a rotor core constituting a field pole iron core and a field coil wound around a field pole body of the rotor core, and constituting the field pole iron core A cooling fin is provided which is formed of an integral structure with the rotor core steel plate and faces the field pole head, and a cooling air passage is constructed by the cooling fin.

  According to the rotor of the salient pole type rotating electrical machine according to the present invention, a cooling ventilation path is constructed by providing a cooling fin facing the field pole head in an integral structure with the rotor core steel plate constituting the field pole iron core. Since it was made to do, the rotor of the salient pole type rotary electric machine which can construct | assemble the cooling ventilation path of a field coil by simple structure can be obtained.

It is sectional drawing which shows the rotor of the salient pole type rotary electric machine concerning Embodiment 1 of this invention. It is a perspective view which shows the rotor of the salient pole type rotary electric machine concerning Embodiment 1 of this invention. It is a principal part expanded sectional view which shows the rotor of the salient pole type rotary electric machine concerning Embodiment 2 of this invention.

Embodiment 1 FIG.
Hereinafter, Embodiment 1 of the present invention will be described with reference to FIG. 1 and FIG. 2, and in each of the drawings, the same or equivalent members and parts will be described with the same reference numerals. 1 is a cross-sectional view showing a rotor of a salient pole type rotating electric machine according to Embodiment 1 of the present invention. 2 is a perspective view showing a rotor of the salient pole type rotating electric machine according to Embodiment 1 of the present invention.

  As shown in FIGS. 1 and 2, the rotor of the salient pole type rotating electric machine is a thin plate in which a plurality of field pole body portions 1a and field pole head portions 1b are formed and a shaft hole 1c is formed in the center portion. It has a rotor core 1 that forms a field pole iron core by laminating a large number of steel plates, and a field coil 2 that is wound around a field pole body 1 a of the rotor core 1. A cooling fin 3 is provided which is formed of an integral structure with the steel plate of the rotor core 1 constituting the field magnetic core and is opposed to the field magnetic pole head 1b, and the cooling air passage 4 is constructed by the cooling fin 3. . In addition, the rotor core 1 has shown the case where it is comprised by the quadrupole which protrudes radially from the axial hole 1c periphery formed in the center part at equal intervals, for example.

  A configuration example of the rotor core 1 will be described. A plurality of field pole body portions 1a and field pole head portions 1b, a shaft hole 1c at the center portion, and cooling fins 3 facing the field pole head portions 1b are formed as an integral structure to form a thin steel plate. As shown in FIG. 1, the cooling fin 3 has shown the case where it arrange | positions symmetrically, for example in the diagonal direction. After the thin steel plates formed in this way are laminated to a constant thickness, the thin steel plates are turned upside down and laminated to a constant thickness. Further, a thin steel plate rotated 90 degrees around the axis is laminated to a constant thickness, and then the thin steel plate turned upside down is laminated to a constant thickness. Next, a thin steel plate rotated 90 degrees around the axis is laminated to a constant thickness. By repeating this, the cooling fins 3 can be arranged in a staggered manner as shown in FIG.

  In addition, as shown in FIG. 2, the cooling fin 3 serves as a coil receiver for the field coil 2, and can improve winding alignment when the field coil 2 is wound. The rotor core 1 on which thin steel plates are laminated is firmly fixed by bolts 11 and nuts 12. Then, the cooling air F1 flows through the cooling air passage 4 and cools the field coil 2. Since the cooling fin 3 is formed of the same thin steel plate as the plurality of field pole body portions 1a and the field pole head portion 1b, it does not require another component as in the prior art, so it can be cooled with a simple configuration. The ventilation path 4 can be comprised.

  Further, the cooling fin 3 is formed of the same thin steel plate as the plurality of field pole body portions 1a and the field pole head portion 1b. Thus, the cooling ventilation path 4 can be configured, and the heat generated by the field coil 2 can be radiated from the surface of the rotor core 1 through the cooling fins 3, so that the cooling effect can be significantly improved.

  By the way, in Embodiment 1 mentioned above, although the case where the cooling fin 3 was arranged in zigzag form was described, it is not limited to this, Even if it arranges the cooling fin 3 in the longitudinal direction in the same direction. It may be good or may be intermittently arranged in the longitudinal direction, and the same effect is obtained.

Embodiment 2. FIG.
A second embodiment of the present invention will be described with reference to FIG. FIG. 3 is an enlarged cross-sectional view of a main part showing a rotor of a salient pole type rotating electric machine according to Embodiment 2 of the present invention.

  In the second embodiment of the present invention, a notch portion 13 is provided on the field pole head 1b side of the cooling fin 3 and a notch portion 14 facing the notch portion 13 on the cooling fin 3 side of the field pole head 1b. And a coil presser 15 made of, for example, a steel plate for pressing the field coil 2 is inserted into the notches 13 and 14.

  As described above, the coil retainer 15 is inserted into the notch 13 of the cooling fin 3 and the notch 14 of the field pole head 1b, so that the field coil 2 is applied during the operation of the salient pole type rotating electric machine. Centrifugal force can be suppressed.

  By the way, in each embodiment mentioned above, although the case of the salient pole type rotary electric machine which consists of 4 poles was described, it cannot be overemphasized that it is not limited to this.

  It should be noted that within the scope of the present invention, the embodiments can be freely combined, or the embodiments can be appropriately modified or omitted.

  The present invention is suitable for realizing a rotor of a salient pole type rotating electrical machine that can construct a cooling air passage for a field coil with a simple configuration.

  DESCRIPTION OF SYMBOLS 1 Rotor core, 1a Field pole body part, 1b Field pole head part, 1c Shaft hole, 2 Field coil, 3 Cooling fin, 4 Cooling ventilation path, 13 Notch part, 14 Notch part, 15 Coil presser

Claims (6)

  A rotor core that forms a field pole core by laminating a plurality of thin steel plates each having a plurality of field pole body portions and field pole head portions and having a shaft hole formed in the center portion, and the rotor A rotor of a salient pole type rotating electric machine having a field coil wound around a field pole body portion of an iron core, the rotor core steel plate constituting the field pole iron core and an integral structure. A rotor of a salient pole type rotating electrical machine, wherein a cooling fin is provided opposite to a field pole head and a cooling ventilation path is constructed by the cooling fin.   The rotor of the salient pole type rotating electric machine according to claim 1, wherein the cooling fin is a coil receiver of the field coil.   The rotor of the salient pole type rotating electric machine according to claim 1, wherein the cooling fins are arranged in a zigzag pattern.   The rotor of the salient pole type rotating electric machine according to claim 1 or 2, wherein the cooling fins are arranged in the same direction in the longitudinal direction.   The salient pole rotating electric machine rotor according to claim 1, wherein the cooling fins are intermittently arranged in a longitudinal direction.   A notch portion is provided on the field pole head side of the cooling fin, a notch portion is provided on the cooling fin side of the field pole head, and is opposed to the notch portion, and the field magnet is provided in each notch portion. The rotor of the salient pole type rotating electric machine according to any one of claims 1 to 5, wherein a coil presser for pressing the coil is inserted.