JP2010200472A - Disk type synchronous motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce a conventional counter-rotating synchronous blower is expensive.
SOLUTION: A magnetic field blade (4d) and a rotor blade (5c) are formed at a time by pouring plastic (6) into a rotating magnetic field (4) and a rotor (5) of a counter rotating synchronous blower. I can do it.
Moreover, by attaching the magnetic flux return plates (3) to both sides, the first and last rotating magnetic fields (4) can be of the same type, so only one type is required. Therefore, it is a disk type synchronous motor and manufacturing method that can be made cheaper than conventional axial flow fans and centrifugal fans.
[Selection] Figure 1

Description

  The present invention relates to a disk-type synchronous motor and a manufacturing method which are made of plastic and integrally mold a motor and a blade.

  When a conventional axial flow compressor is used to blow air using an electric motor, the rotating force of the electric motor is transmitted to the axial flow compressor via the shaft, and the gas compressed by the moving blade passes through the rear stationary blade. Enter the second stage blade. During this time, the gas is energized by the moving blades and is reduced by the stationary blades. Although the pressure was increased by repeatedly increasing and decreasing in this way, this method has a large capacity because the axial flow compressed air and the electric motor are separate. Moreover, since the stationary blade was used, the energy given to the moving blade was reduced by the stationary blade, so the efficiency was poor.

Therefore, in the name of Japanese Patent Laid-Open No. 4-192626, in which an axial flow compressor and an induction motor are integrated, a reverse rotation axial flow electric compressor supports a shaft, and a number of rotating magnetic fields attached to the shaft rotate. Attaching the rotors alternately, attaching the shaft blades to the outer periphery of the rotating magnetic field, attaching the rotor blades to the outer periphery of the rotor, the shaft blades and the rotor blades rotate in reverse, and do not use the stationary blades There was a thing.
However, in reverse rotating axial flow electric compressors, induction motors were used, so when making the rotor, it was difficult to make a cage-shaped rotor thin, and because there was no aluminum die casting, we ordered from an aluminum foundry. Because there was no skill, there was no output and the production cost was expensive.

  Therefore, the counter-rotating synchronous blower / Japanese Patent Application No. 2008-167050 is mostly the same as the counter-rotating axial flow electric compressor, but the rotor has a permanent magnet N pole and S in accordance with the number of poles of the rotating magnetic field. The production cost was low because only the poles were arranged, and the output was also overwhelmingly high.

JP-A-4-192626 Japanese Patent Application No. 2008-167050 JP-A-11-341717

  The counter-rotating synchronous blower / Japanese Patent Application No. 2008-167050 is mostly the same as the counter-rotating axial flow electric compressor, but the rotor has N and S poles of permanent magnets according to the number of poles of the rotating magnetic field. I made a rotator, but I was able to reduce some production costs. Nevertheless, creating a rotating magnetic field was expensive.

Therefore, by attaching the magnetic flux return plate (3), only one type of the rotating magnetic field (4) is required, and the rotating magnetic field (4) and the magnetic field blade (4d), and the rotor (5) and the rotor blade (5c) are provided. An inexpensive counter-rotating synchronous blower is provided by casting plastic (6).
In addition to the counter-rotating synchronous blower, a disc-type synchronous motor and a manufacturing method that can reduce the manufacturing cost can be provided by making this plastic (6) flow even if a non-inverted product is made. is there.

In order to achieve the above object, the counter rotating synchronous blower of the disk type synchronous motor and the manufacturing method of the present invention has a casing (1) pivotally supporting the shaft (2), and the first and last of the shaft (2). A magnetic flux return plate (3) is attached to the main body, and a large number of rotating magnetic fields (4) and a rotor (5) are alternately sandwiched between them.
An iron core (4c) wound with a coil (4b) is placed in the rotating magnetic field (4).
(For the split core method, refer to the name of Japanese Patent Laid-Open No. 11-341717, the stator of an electric motor and the manufacturing method thereof.)
Plastic (6) is poured into the magnetic field blade (4d) and made integrally.
Then, in the rotor (5), the same number of N poles and S poles of permanent magnets are prepared according to the number of poles of the rotating magnetic field (4), and the plastic blade (6) is poured into the rotor blade (5c). The goal was achieved by making it integrated.

The manufacturing method of the rotating magnetic field (4) of the counter rotating synchronous blower according to claim 2, wherein the bearing (4a) is placed in the middle of the rotating magnetic field mold (4e), and the coil (4b) is wound around it. Place (4c), wire everything in parallel and go out through the hole for wiring.
The object was achieved by pouring plastic (6) there and molding the rotating magnetic field (4) and magnetic field blade (4d) simultaneously.

According to a third aspect of the present invention, the rotor (5) of the counter-rotating synchronous blower has the bearing receiver (5a) in the middle of the rotor mold (5e) and the magnet (5b) around it.
The object was achieved by pouring plastic (6) there and molding the rotor (5) and the rotor blade (5c) simultaneously.

In the disk type synchronous motor and the manufacturing method according to claim 4, the rotating magnetic field (4) is formed by integrating the magnetic flux return plate (3) and the shaft (2), and the coil ( The iron core (4c) wound with 4b) is placed, and the plastic (6) is poured into it to create a rotating magnetic field (4).
In the rotor (5), the magnetic flux return plate (3) and the bearing receiver (5a) are arranged, the magnet (5b) is arranged around the rotor, the plastic (6) is poured into the rotor (5), and the rotor (5) rotates. The object was achieved by molding the child blade (5c) at the same time.

By using the disk type synchronous motor and the manufacturing method of the present invention, the following effects can be obtained.
(A) Since a magnetic flux return plate is used, one type of rotating magnetic field can be formed.
(B) Because it is made of plastic, it is resistant to water.
(C) Since the wings are made of plastic, the wings are molded in the same way.
(D) Therefore, it can be cheaper than a conventional centrifugal fan.

From here, the effect of the counter-rotating synchronous blower is as follows: (a) Since the inverter is used, the air volume can be freely determined.
(B) Since a synchronous motor is used, the power consumption is overwhelmingly lower than that of a conventional counter-rotating axial flow electric compressor.
(C) Since the present invention uses a synchronous motor, it is easy to produce a rotor simply by attaching a permanent magnet.
(D) The wind is straighter than a centrifugal or axial fan.
(E) Because there are many wings, it is quiet because the force applied to one wing is small.

The figure is a perspective view of the present invention and a partial sectional view. The figure is a sectional view of the shaft (2) on the mounting side. The figure is a front view of the axis (2) of FIG. 2 as seen from the front. The figure is a sectional view of the rear shaft (2). The figure is a perspective view of the shaft stop (2a) and the magnetic flux return plate (3). The figure is a sectional view in which a shaft stop (2a) and a magnetic flux return plate (3) are attached to the shaft (2). The figure is a perspective view of a rotating magnetic field mold (4e). The figure is a perspective view of the bearing (4a). The figure is a perspective view in which an iron core (4c) and a coil (4b) are wound. The figure is a perspective view of an object placed in a rotating magnetic field mold (4e).

The figure is a perspective view of the rotating magnetic field (4). The figure is a sectional view in which a rotating magnetic field (4) is attached to the shaft (2). The figure is a perspective view of the rotor mold (5e). The figure is a perspective view of the bearing receiver (5a). The figure is a sectional view of the bearing receiver (5a). The figure is a perspective view of the magnet (5b). The figure is a perspective view of an object placed in a rotor mold (5e). The figure is a perspective view of the rotor (5). The figure is a sectional view of the rotor (5) attached to the shaft (2). The figure is a cross-sectional view of a counter-rotating synchronous blower. The figure is a sectional view of a disk type synchronous motor.

The feature of the counter-rotating synchronous blower of the disk type synchronous motor and the manufacturing method of the present invention is that the magnetic flux return plate (3) is attached in front of and behind the rotating magnetic field (4). For this reason, all the rotating magnetic fields (4) may have the same shape.
Therefore, after attaching the shaft stop (2a) to the shaft (2), the magnetic flux return plate (3) is inserted, the rotating magnetic field (4) and the rotor (5) are attached alternately, and finally the magnetic flux return plate (3 ) And the casing (1) pivotally supports it.

The manufacturing method of the rotating magnetic field (4) of the counter-rotating synchronous blower has a protrusion for attaching the bearing (4a) at the center of the rotating magnetic field mold (4e), and the protrusion is a change of the shaft (2). A bearing (4a) is fitted there.
Then, an iron core (4c) wound with a coil (4b) is placed around it, one is wired to the ground (4f), and the other is wired from the hole opened in the bearing (4a) to the internal cord (7) To do.
The iron core (4c) is ideally fan-shaped, but it is assembled into a trapezoid, insulated and wound with a coil (4b). Therefore, in the conventional method such as fractional groove winding, the number of turns of the coil (4b) is limited, but in this method, it can be overwhelmingly wound.
Plastic (6) is poured into it, and a rotating magnetic field (4) and a magnetic blade (4d) are molded at once.

  The rotor (5) of the counter-rotating synchronous blower is manufactured by inserting a bearing receiver (5a) into the central ledge of the rotor mold (5e) and surrounding the magnet (5b) with a rotating magnetic field (4). The rotor (5) and the rotor blade (5c) are molded at a time by pouring the plastic (6) into them.

Then, the shaft stop (2a) is inserted and attached to the shaft (2), and then the magnetic flux return plate (3) is inserted and attached, and the large cut tube (4i) is inserted, and the key (4g ) Is attached to the key groove (4h), the rotating magnetic field (4) is inserted, and press fitting on the soot pipe (4i) is attached, and the internal cord (7) is wired.
The rotor (5) is attached to the shaft (2) by inserting the bearing (8) into the bearing receiver (5a) from both ends, and a collar (washer) is attached between the bearing (8) and the bearing (8). Therefore, the bearing (8) does not need to receive pressure from the side.
The rotor (5) can be inserted by first inserting a washer and adjusting the gap with the rotating magnetic field (4) by the thickness of the washer.
Then, the rod (5i) with the cut is inserted, the rotor (5) is inserted, and the portion corresponding to the rod (5i) is press-fitted. Since there are this soot tube (5i) and soot tube (4i), the place to press-fit can be minimized.

Such an operation is repeated, and the object to which the magnetic flux return plate (3) is attached after the last rotating magnetic field (4) is attached to the casing (1).
The wiring has two slip points (9b), and one is provided with a conventional slip ring (9a). Regarding the slip point (9b), the power supply device for contra-rotation type of Japanese Patent Application No. 2001-336447 See

In the synchronous blower that does not reverse, the rotating magnetic field (4) is made by integrating the magnetic flux return plate (3) and the shaft (2), and the coil (4b) is wound around the shaft (2). And pour plastic (6) into it to create a rotating magnetic field (4).
In the rotor (5), the magnetic flux return plate (3) and the bearing receiver (5a) are arranged, the magnet (5b) is arranged around the rotor, the plastic (6) is poured into the rotor (5), and the rotor (5) rotates. A child wing (5c) is molded simultaneously.
And the rotor (5) which put the bearing (8) in the bearing receiver (5a) is inserted in the shaft (2) of the produced rotating magnetic field (4).

Embodiments of the present invention will be described below with reference to the drawings.
About the counter rotating synchronous blower of the manufacturing method of the disk type synchronous motor of the present invention, there are four three-phase rotating magnetic fields (4), eight pole slots and twenty-four rotating magnetic fields (4), 8 The three rotors (5) having the magnets (5b) will be described with reference to a partial cross-sectional view in the perspective view of FIG. 2) Install.
A magnetic flux return plate (3) is attached to both ends of the shaft (2), and a rotating magnetic field (4) and a rotor (5) are alternately attached between them, and the power source is supplied with a brush (9) from an electric cord (7b). To the slip ring (9a), to the slip point (9b) and then to the internal cord (7) via the brush (9).
The slip point (9b) is a point because the slip point (9b) is a point compared to the friction between the rings like the slip ring (9a).

Now, starting from the shaft (2), FIG. 2 is a sectional view of the shaft (2) on the slip ring (9a) side, and FIG. 3 is a front view. As can be seen from the figure, a key groove (4h) for attaching a key (4g) is provided on the upper side, and an inner cord groove (7a) for passing the inner cord (7) on the lower side. Or with.
The groove (7a) for the inner cord is used when the coil (4b) in the rotating magnetic field (4) is wired and then wired to the inner cord (7).
The key (4g) is used when the rotating magnetic field (4) is attached to the shaft (2) and fixed with the key (4g).
FIG. 4 is a continuation of the cross-sectional view of FIG. 2 and shows the other end of the shaft (2) with a hole to which the slip point (9b) is attached.

FIG. 5 is a perspective view of the shaft stopper (2a) and the magnetic flux return plate (3). FIG. 6 is a perspective view of the shaft stop (2a) inserted into the shaft (2) and fixed with a screw. It is sectional drawing which inserted 3).
Since the shaft stop (2a) is press-fitted with the rotating magnetic field (4) and the rotor (5) from now on, the shaft stopper (2a) is firmly fixed so as not to be damaged.
The magnetic flux return plate (3) is an important part in the present invention in which the rotating magnetic field (4) is made into one mold by returning the magnetic flux.

FIG. 7 is a perspective view of the rotating magnetic field mold (4e), in which the protrusion corresponding to the shaft (2) for mounting the bearing (4a) at the center and the iron core (4c) around which the coil (4b) is wound There are 24 retracted parts for placing the wings, and there are wing types for making the magnetic field wings (4d) around them.
FIG. 8 is a perspective view of the bearing (4a), and a groove for attaching a key (4g) is attached to the upper part.
FIG. 9 is a perspective view of the iron core (5c) to be attached to the left, and shows a method in which a trapezoidal shape can be made most inexpensively.
On the right, the coil (4b) is wound around the iron core (5c). When making one rotating magnetic field (4) with three-phase eight-pole rotating magnetic field (4), 24 iron cores (4c) are required, and 96 pieces are required to produce the counter rotating synchronous blower of FIG. Iron core (4c) and coil (4b) are required. Since the coil (4b) is connected in parallel, φ0.2 is wound 3000 times to connect to the ground. Therefore, even if the coil (4b) is wound 3000 times, the thickness may be 2 mm, so that it is not necessary to make a place for winding the coil (4b) as in the prior art. As for the wiring method of the coil (4b), if three UWV phases continue, the U′W′V ′ phase is attached by turning over the iron core (4c).

FIG. 10 is a perspective view of a rotating magnetic field mold (4e) in which a bearing (4a) is arranged in the center and a coil (4b) is wound around an iron core (5c) around the bearing (4a).
One of the coils (4b) is connected to the ground, and the other is connected to the UWV phase, and is taken out from a hole opened in the bearing (4a). There, it molds with the reinforced plastic (6) which hardens glass fiber with resin. In fact, two molds and thermosetting plastics are better for mass production, but they were stopped because there are two molds.
FIG. 11 is a perspective view of the completed rotating magnetic field (4), which has a key (4g) and a soot tube (4i). The key (4g) and the soot tube (4i) are attached to the shaft (2) of FIG. A rotating magnetic field (4) is inserted there, as shown in FIG.
At this time, it is possible to press-fit at an appropriate place without damaging the shaft (2) by attaching the soot tube (4i). The soot pipe (4i) is made by bending a 1 mm steel plate and serves to connect the bearing (4a) and the shaft (2) of the rotating magnetic field (4).
On the opposite side of the key (4g), the wire of the coil (4b) protrudes from the hole and connects the coil (4b) to the internal cord (7).

The rotor mold (5e) in FIG. 13 has a ledge for attaching the bearing receiver (5a) at the center. Around that, there are eight retracted parts for attaching the magnet (5b), and on the outer side is a wing shape for making the rotor wing (5c).
The perspective view of FIG. 14 is a bearing receiver (5a). The bearing receiver (5a) shown in the sectional view of FIG. 15 is a part into which the bearing (8) is inserted from both ends. Place in the center of (5e).
FIG. 17 is a perspective view in which eight magnets (5b) in the perspective view of FIG. 16 are placed around it. When the upper part of the bearing receiver (5a) is not firmly fixed, a temporary bearing (8) may be inserted.
There, it molds with the reinforced plastic (6) which hardens glass fiber with resin.

The perspective view of FIG. 18 is a view of the rotor (5) taken out from the rotor mold (5e). The bearing (8) is attached to the bearing receiver (5a) from both ends. A collar (washer) is placed between the bearing (8) and the bearing (8). The collar is attached because the bearing (8) does not rotate smoothly when a lateral force is applied to the bearing (8).
Next, the gutter (5i) is made by bending a 1 mm steel plate.
The cross-sectional view of FIG. 19 is a view in which the rotor (5) is attached to the cross-sectional view of FIG. First, before attaching the rotor (5), the washer (2b) is inserted into the shaft (2). The washer (2b) is a component that determines the gap between the rotating magnetic field (4) and the rotor (5), and about 0.5 mm is ideal. Next, after inserting the bush (5i) into the shaft (2), the rotor (5) is press-fitted.

  A large number of the rotating magnetic field (4) and the rotor (5) are attached, and finally the magnetic flux return plate (3) is inserted and attached to the casing (1) through the bearing (8). become that way. The figure is the same as the perspective view of FIG.

The rotating magnetic field (4) of the synchronous blower that does not reverse inversion is formed by integrating the magnetic flux return plate (3) and the shaft (2).
Then, the iron core (4c) around which the coil (4b) is wound is placed on the magnetic flux return plate (3) around the shaft (2) and molded with plastic (6).
Next, in the rotor (5), the magnetic flux return plate (3) and the bearing receiver (5a) are integrally arranged, the magnet (5b) is arranged around the rotor, and the plastic (6) is poured into the rotor (5). (5) and the rotor blade (5c) are molded simultaneously.
At that time, the rotor blade (5c) may be either an axial flow type or a centrifugal type.
And since the bearing (8) is installed in the bearing receiver (5a) and the shaft (2) is inserted, the size of the bearing (8) is larger from the side closer to the rotor (5). When a small object is attached to the back part, it is not necessary to press-fit the bearing (8) for a long distance.
Furthermore, since the rotor (5) is easy to remove, it is convenient because only the rotor (5) can be removed to clean the rotor blade (5c).

  The disk type synchronous motor of the present invention that does not reverse inversion can be used for an electric vehicle when a tire is attached instead of the rotor blade (5c). In this motor, the magnet (5b) attracts the iron core (4c) by nature, so the rotor (5) with the tire cannot be removed, but when removing the magnet (5b) Since the adsorption power drops, the tire can be removed. Therefore, no bolts are necessary.

Moreover, since the present invention is shaped with plastic (6), it can be used for submersible pumps and the like.
Furthermore, if the rotor (5) is made of aluminum, it can float and rotate when electricity is applied to the rotating magnetic field (4) without worrying about the bearing (8) or gap, so it can be used in harsh places. it can.

1 Casing shaft
2 shaft 2a shaft stop 2b washer 3 magnetic flux return plate 4 rotating magnetic field 4a bearing 4b coil 4c iron core 4d magnetic field blade 4e rotating magnetic field type 4f earth 4g key 4h keyway 4i soot tube 5 rotor 5a bearing receiver 5b magnet 5c rotor blade 5e Rotor type 5i Casket 6 Plastic 7 Internal cord 7a Groove for internal cord 7b Electric cord 8 Bearing 9 Brush 9a Slip ring 9b Slip point

Claims (4)

The casing (1) pivotally supports the shaft (2), and a magnetic flux return plate (3) is attached to the beginning and end of the shaft (2),
In the meantime, a disk type synchronous motor and a manufacturing method characterized by a counter-rotating synchronous blower in which a large number of rotating magnetic fields (4) and rotors (5) are alternately sandwiched.   The rotating magnetic field (4) is produced by placing a bearing (4a) in the middle of a rotating magnetic field mold (4e), placing an iron core (4c) around which a coil (4b) is wound, and placing a plastic (6) there The disk-type synchronous motor and the manufacturing method are characterized in that the rotating magnetic field (4) and the magnetic field blade (4d) are simultaneously molded.   The rotor (5) is manufactured by placing the bearing receiver (5a) in the middle of the rotor mold (5e), placing the magnet (5b) around it, and pouring the plastic (6) into the rotor (5a). A disk type synchronous motor and a manufacturing method, wherein a child (5) and a rotor blade (5c) are molded simultaneously. The rotating magnetic field (4) of the synchronous motor that does not reverse inversion is obtained by integrating the magnetic flux return plate (3) and the shaft (2).
An iron core (4c) wound with a coil (4b) is placed around the shaft (2), and a plastic (6) is poured into it to create the rotating magnetic field (4).
The rotor (5) has a magnetic flux return plate (3) and a bearing receiver (5a), a magnet (5b) is placed around it, and plastic (6) is poured into the rotor (5) to mold the rotor (5). A disk-type synchronous motor and a manufacturing method.

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