JPS60148352A - Shading coil type ac fan - Google Patents

Abstract

PURPOSE:To reduce the cost and the size and to facilitate the works of winding and the like of a shading coil type AC fan by forming a stator yoke in a deep bottom vessel shape, and composing of another part from a stator stack. CONSTITUTION:A stator 9 has a stator yoke 10 secured to a frame 1, the yoke 10 has a deep bottom vessel shape of reduced thickness as well not only a magnetic path forming function but stator stack supporting and magnetic shiellding functions. The stator 9 has a stator stack 11 formed separately from the yoke 10, the stack 11 has a plurality of poles, and the outer peripheral ends corresponding to the poles are connected to the inner periphery of the yoke 10 by bonding, calking or welding. A coil 12 wound through a bobbin 12 of plastic on the outer periphery of the stack 11.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a shaded coil type AC horn 7, particularly to a shaded coil type AC fan whose rotor blades are rotated by interaction with a wind turbine. It's something that will happen.

(Prior art) The shaded coil type AC fan has salient poles installed on the stator.
By inserting a shaded coil there, a kind of moving magnetic field is generated under each magnetic pole, and a secondary current flows across the rotor coil, creating an alternating current that generates a starting torque of 1. It is widely used for cold IJI such as electronic machines.

FIG. 1 shows a half cross section of a conventional shading: I-type AC horn 7. The J shown in the figure is equipped with a frame 1 of this shaded coil type alternating current fan. A computer 3 is attached to the outer periphery of the shaft 1/foot 2.

The rotor 3 is rotatably supported on the outer periphery of the shaft 2 via a bearing 4 and has a bearing box 5, to which an iron core 6 having a plurality of magnetic poles is fixed. A cylindrical blade support member is fixed to the bearing box 5 at the bottom right, and rotary blades 8 are fixed radially to the outer periphery of the blade support 7.

Furthermore, a stator 9 is removed from the frame 1. The stator 9 includes a ring-shaped stator yoke 10 and a stator stack 11 protruding from the inner periphery of the stator yoke 10. As shown in FIG. A coil 12 is wound around the status stack 11. Although it is not shown in the figure, the status stack 11 contains one copy of Kumadori. Such a stator 9 is fitted and fixed into a mounting portion 1a formed on the frame 1.

In the shaded coil type AC fan having such a structure, the interaction between the stator 9 and the coil rotor 2 rotates the rotary blade ε3 of the coater 2 to obtain the desired cooling effect.

However, with the conventional J3C for AC fans with one shaded coil piece, winding work and processing after sacrificing wire are troublesome, and there is also a drawback that these works may cause product variations. There you go. In other words, the conventional shaded coil length is 1゛! (As shown in Fig. 2, a thick stator yoke 10 with a thickness of 1-1 was used to obtain the desired 1 to 1 torque, so the stator stack 11 is Unable to return the wrapping of the 1st file 12 to ``-'', I have no choice but to wind the 1st file 12 in the shape of a ``ri'' as shown in the diagram. For this reason, the winding process is troublesome and the wire swells up after winding, instead of leaving a gap.]
This requires a process such as manually pushing in the coil '12, which may cause wire breakage, and it is not possible to automate the process.

In addition, J3 is different from the conventional shaded coil type AC fan J7 (
For magnetic shielding (suppressing the magnetic flux in the souter 9 from being collected in one part), parts must be installed for each new latch, and 21st gamma :1 There is a drawback that it is noisy and the fan is large.

(Object of the Invention) The object of the present invention is to develop a small-sized coil type (with high reliability and ease of winding, etc.). Provides exchange fans.

(Structure of the Invention) To achieve the above object, the present invention provides a shaded type AC fan in which the rotor blades are rotated by a phase shift between the stator and the rotor, in which the stator is fixed to a frame. The stator yoke is formed separately from the stator yoke and has a plurality of magnetic poles, and the outer peripheral end surface corresponding to the magnetic poles is in contact with the inner peripheral surface of the stator yoke.
The stator stack has a coil wound around the previous stator data stack, and the stator is a
It is characterized by being in the shape of a deep-bottomed container, and having 11 L and 11 L for magnetic path formation, stator stack support, and magnetic shielding.

(Example) The present invention will be described in detail below based on the drawings.

FIG. 3 shows a preferred embodiment of the shaded single-hole type AC fan according to the present invention. Note that the part corresponding to the conventional shaded 21-il type shown in Fig. 21 Illj AC Noan I13
Stator 9 is a stator fixed to frame 1"-91
As shown in FIG. 3, the stator yoke 10 is made of a thin-walled, solid, deep-bottom container shape, and has the following functions: stator stack support and magnetic shielding, as well as the function of forming a magnetic path. It also has the following. Maic
The stator 9 has a stator stack 11 which is formed separately from the stator yoke 10, and this stator stack 11 has a plurality of magnetic poles, and the outer peripheral end surface corresponding to these magnetic poles is located inside the stator yoke 10. In addition, a coil 12 is wound around the outer periphery of the stator stack 11 via a plastic bobbin 13.

The stator 9 having such a configuration is constructed as follows-(
Once assembled, the coil 12 is wound on the bobbin I; In this way, according to the shaded = 1-hole type father-flow fin of this embodiment, As shown in the figure, it is possible to cover the thickness t of the Sufu/7-1-ku 10 much thinner than the thickness y7 of the conventional Suda Ni 1-ri 10. The reason why the thickness t of the stator stack 10 can be reduced in this way is that the magnetic flux passing through the magnetic poles of the stator stack 11 is transferred to the stator stack 10 as shown in FIG. This is because the spreading effect of the magnetic flux, which spreads to the side and bottom surfaces of the yoke 10 and returns to the magnetic pole on the opposite side, can be reduced by 1~7. By holding I, it is possible to further reduce the size of the engine.
be. J3, due to such a magnetic flux spreading effect, it is possible to suppress the increase in iron loss due to an increase in magnetic flux density,
Furthermore, if the stator yoke 10 is 1- or thinner, the C1 eddy current can be suppressed to a small level.

In addition, according to Kumadori (Ile type exchange) J. Ng of this example,
Since the thickness of the stator yaw 910 is thin, it is possible to cover the stator stack 11 for a long time. As a result, the coil 12 can be wound around the bobbin 13, and the coil 12 can be automatically wound linearly as shown in FIG. The stator 9 can be assembled by simply inserting and fixing the bobbin 13 on which the coil 12 has been wound in advance into the stator stack 11, and then fixing the stator stack 11 to the stator yoke 10. Easy, reliable, low second strike.

Furthermore, to the shaded coil of this embodiment, "1 AC normal J,
This is because the stator yoke 10 has the ability to support the suspension stack, and it is possible to make the fan popular and to obtain a magnetic shielding effect. can.

In addition, in the embodiment described above, a configuration is shown in which the frame 1 and the bearing box 5 are independent iM3f'j' (j is present, and the bearing box 5 is fixed). However, the present invention is not limited to this.For example, the frame 1 and the bearing box 5 are made into an integral structure, and the so-called inner ring rotation 474 in which the Ll-Y3 and the Shirt 1 and 2 rotate.
This also applies to the lifting platform of the construction.

(Effects of the Invention) As explained above, in the shaded AC filtration film according to the present invention, the yoke has a thin-walled deep-bottom shape. ,
In addition, the winding dimension of the coil can be made longer on the status stack. In addition, in addition to the fact that the stator stack allows long changes in the coil winding method, the stator stack is made up of separate parts from the stator. ]Coil take f
1, and then the stator stack is brought into contact with the inner circumferential surface of the stator yoke. This simplifies the winding work and assembly work, and prevents IQ scratches on the coil. This eliminates slowdowns, improves reliability, and allows for faster downtime. Furthermore,
Since the present invention ('t, L, stator') is shaped like a deep container and has a magnetic shield, there is no need to install a separate magnetic shield body. 1. It is possible to suppress loss from becoming popular. In the present invention, even if the stator wall is made thinner, the stator wall can be shaped like a container. Since the spreading effect of the magnetic flux is reduced by 1r1, it is possible to suppress an increase in iron loss due to an increase in the single-vessel flux density.

[Brief explanation of drawings]

Fig. 1 is a half sectional view of an example of a conventional shaded coil with an intersecting rQ-nof7, Fig. 2 is a partial configuration diagram of the stator in Fig. 1, and Fig. 3 is a shaded coil according to the present invention. J half sectional view showing an embodiment of the 1-il type AC fan, FIG. 4 shows the part 41 of the stator shown in FIG.
It is a v cross-sectional view. 1... Frame, 3... [1-ta, (U... Iron core, 7... Wing support body, [3... Rotor blade, 0... Snow one-ta, 10...・Stator yoke, 11...Status tack, 12...I-il, 13...Bobbin. 1st area/' Figure 2 13th 41st Beppu dancer Gonyama jF Hakuwa (spontaneous) Showa 59 eggs
March 15th, Mr. Kazuo Wakasugi, Director-General of the Special I Agency, 1. Indication of Matter A'1: Bamboo 11fJ 59 3547 No. 2, Title of Invention: ``Kumadori'' Ile-type AC No. 3, Amendment: J
Relationship with the case of the applicant: Sanyo Denki Co., Ltd. 4, Agent: 4-31-6 Shinbashi, Minato-ku, Tokyo, Bunzan Hill 61, Leopard 5, Subject of amendment: 11111 t! It 6. Amend the specification (Contents [Before J change)] printed in large type according to the content regulations of 2. as shown in the attached sheet. that's all

Claims (1)

[Scope of Claims] J3 is a shaded coil type AC fan that prevents rotor blades from rotating due to interaction with a stator, and the stator has a stator yoke fixed to a frame and a stator yoke that is separate from the stator yoke. The stator yoke is formed with a plurality of magnetic poles, and the outer circumferential end surface corresponding to these magnetic poles is in contact with the inner circumferential surface of the stator yoke. The stator stack and the coil wound around the stator stack are placed on the right side, and the stator 1 is made up of a deep container shape with 1M thick and has magnetic path formation, stator stack support, and magnetism. Ii each 1m capacity of the shield
Kumadori = 1-il type AC fan characterized by 6.