JP2002106456A - Hydraulic blade integrated rotary electric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such problems that since a fluid equipment, a rotary electric machine and associated equipments in a conventional power generator or pump/ fan device using them are each independently arranged on the same axis, the set-up is complicate, large space is needed for installing the whole equipment elongated in an axial direction, and also much time is spent for installation. SOLUTION: There is provided an outer rotor type rotary electric machine provided with a casing 1 for guiding fluid flow, a stator frame 3 fixed to the casing 1, a stator 2 with a winding wire 4 fixed to the stator frame 3, a rotor 6 rotating outside the stator 2, a yoke 7 supporting the rotor 6, and hydraulic blades 9 outside the yoke 7, rotatable integrally with the rotor 6 and yoke 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outer rotor type rotary electric machine having a small and medium capacity, and more particularly to a fluid blade integrated type rotary electric machine which drives a power generator or a load by integrating a fluid device and a rotary portion of the rotary electric machine.

[0002]

2. Description of the Related Art In general, a fluid device performs a rotating motion by flowing a fluid to rotate a rotating electric machine to generate electric power, and a power device operates as a motor by applying electric power to the rotating electric machine to rotate the fluid device. Pumping or fan devices for pumping fluid are known in the art.

[0003] In a power generating device, a pump device, or a fan device, a fluid device and a rotating electric machine are installed separately and independently.
They are directly connected by a coupling or connected via a speed increaser, a speed reducer, or the like. If necessary, a bearing device is also provided between the shaft end and the connected device to support the load of the rotating part, but the bearing device is convenient for assembling or disassembling the power generation device, pump device, or fan device. In order to improve the performance, they may be arranged at both ends of each of the fluid equipment and the rotating electric machine.

In addition, when a synchronous machine is used as a rotating electric machine, a field current supply device for supplying a field current to a rotor winding of the synchronous machine from a fixed portion such as an AC exciter or a rotary rectifier. Is also arranged. When a winding type induction machine is used as the rotating electric machine, a current collecting device for extracting electric power of the rotor to the fixed portion side is provided.

In many cases, these devices and devices are all independently arranged on the same axis in order to mainly improve maintenance.

[0006] The rotating electric machine used in the above technology is
Mainly for safety reasons, in most cases, the rotor is a so-called inner rotor type in which a stator exists on the outer diameter side of the rotor.

[0007]

In the above-mentioned prior art, fluid equipment and rotating electric machines arranged in a power generating device, a pump device or a fan device, as well as associated devices such as a bearing device and a field current supply device, When all the devices are arranged on the same axis, there is a problem that the equipment configuration becomes complicated and the equipment area increases because the axial length increases. In addition, since the devices and devices are installed independently of each other, there is a problem that they have to be individually installed and a great deal of time has to be spent.

An object of the present invention has been made in view of the above points. By integrating a power generating device, a pump device or a fan device, the structure of the device is simplified, and the installation area and time required for installation are reduced. It is an object of the present invention to provide a fluid-vane-integrated dynamoelectric machine capable of minimizing the pressure.

[0009]

SUMMARY OF THE INVENTION The present invention relates to a stator having a casing for guiding a fluid flow, a stator frame mounted on the casing, a stator winding mounted on the stator frame, and a stator. An outer rotor type rotating electric machine comprising a rotor rotating outside of the rotor and a yoke supporting the rotor, and a fluid blade which is rotatable integrally with the rotor and the yoke is provided on an outer periphery of the yoke. This is achieved by configuring a rotating electric machine having a body shape.

[0010]

An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a sectional view of a fluid-vane-integrated dynamoelectric machine showing an embodiment of the present invention. The flow direction of the fluid is the axial direction of the rotating electric machine as indicated by a white arrow, and the flow of the fluid is guided by the casing 1. The rotating electric machine includes a stator 2 having a stator winding 4 attached to a stator frame 3.
, A rotor 6 having a rotor winding 5 rotating outside the stator 2, and a yoke 7 supporting the rotor 6, and have an outer rotor shape.

A field current is supplied to the rotor winding 5 from a fixed portion side by a field current supply device (brush) 8.
On the outer periphery of the yoke 7, a fluid blade 9 that is rotatable integrally with the rotor 6 and the yoke 7 is provided. The fluid blades 9 are arranged in a propeller shape so as to affect the flow of the fluid. The axial and radial loads are respectively applied to the thrust bearing 1
0 and the guide bearing 11.

The rotating electric machine is arranged in the fluid from the inner surface of the casing 1 by the stator frame support 12. The seal mechanism 13 is provided to prevent the fluid to be used from entering the rotating electric machine, and the stator winding 4 is connected to the stator lead wire 14.

In FIG. 1, the operation when the fluid is supplied by other means (not shown) and the rotating electric machine is a synchronous generator will be described.

When the fluid flows, the fluid acts on the fluid blades 9 to generate a rotational torque, thereby rotating the yoke 7 and the rotor winding 5 integrated with the fluid blades 9. By supplying a field current from the field current supply device 8 to the rotor winding 5, a rotating magnetic field is generated in the gap between the rotor 6 and the stator 2, similarly to a conventional inner rotor type synchronous machine. . By linking this rotating magnetic field to the stator 2,
Electric power is generated from the stator winding 4. The electric power generated in the stator winding 4 is supplied to the stator frame 3 and the stator frame support member 12.
It is possible to supply power to a load or the like by means of the stator outlet wire 14 arranged outside through the inside of the inside.

By doing so, the fluid equipment, the rotating electric machine, the attached devices, and the like can be integrated, so that the device configuration can be simplified and the axial length can be greatly reduced. Furthermore, by providing joining means such as a joint in the casing 1, it is not necessary to separately install each device and device as in the related art, and only one installation is required, so that the time spent for installation is greatly reduced. Becomes possible.

Next, the case where the fluid flows in the radial direction of the rotating electric machine will be described with reference to FIGS.

FIG. 2 is a cross-sectional view of a fluid-vane-integrated dynamoelectric machine showing another embodiment of the present invention, and FIG. 3 is a cross-sectional view as viewed from an axial direction.

The casing 1 is arranged along the flow direction of the fluid. The fluid vanes 9 are radially radial and parallel to the axial direction to act on the fluid. In addition, since the stator frame 3 can be directly attached to the casing 1, the stator frame support can be omitted. The other configuration is the same as that of the embodiment of FIG. 1, and the steady operation is the same as that of the example of FIG.

In the embodiment shown in FIGS. 2 and 3, the arrangement of the fluid blades according to the flow direction of the fluid allows the rotary electric machine integrated with the fluid blades of the present invention to be used when the fluid flow is in the radial direction. But it can be applied.

In the embodiments shown in FIGS. 1 and 2,
Although the rotating electric machine has been described by taking a synchronous generator having a rotor winding capable of supplying a field current as an example, a rotor having a short circuit closed on the rotor instead of the rotor winding 5 capable of supplying a field current If a winding is formed, it can operate as a cage-shaped induction generator. If a permanent magnet is used instead of the rotor 6 provided with the rotor winding 5 to which a field current can be supplied, it can operate as a permanent magnet type synchronous generator. When the rotating electric machine is operated as an induction machine or a permanent magnet type synchronous machine, the field current supply device 8 that supplies the field current to the rotor winding 5 from the fixed portion side can be omitted. is there.

As described above, in the present invention, it is clear that the rotating electric machine only needs to be able to form an outer rotor shape, and it is obvious that the same can be implemented even if the rotating electric machine has a different operating principle.

Although the case where the rotating electric machine operates as a generator has been described, operation as an electric motor is also possible. That is, when power is supplied to the stator winding 5 in a state where there is no fluid flowing in advance, a rotating torque is generated in the rotating electric machine and the fluid blades 9 are rotated, so that a rotating electric machine such as a pump or a fan device is used. Can be operated as an electric motor to send out fluid.

[0024]

According to the present invention, the apparatus configuration can be simplified by integrating the fluid blades and the rotating electric machine, and the installation area and time required for installation are greatly reduced, so that rationality and It has excellent economical effects.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention as viewed from a radial direction.

FIG. 2 is a sectional view showing another embodiment of the present invention as viewed from a radial direction.

FIG. 3 is a cross-sectional view as viewed from an axial direction in FIG. 2;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Casing, 2 ... Stator, 3 ... Stator frame, 4 ... Stator winding, 5 ... Rotor winding, 6 ... Rotor, 7 ... Yoke, 8
... field current supply device, 9 ... fluid blade, 10 ... thrust bearing,
11: guide bearing, 12: stator frame support, 13: seal mechanism, 14: stator outlet.

Continued on the front page F term (reference) 3H033 AA02 BB02 BB08 BB20 CC01 DD06 DD17 EE05 3H072 AA12 BB08 CC42 CC71 5H607 AA12 BB02 BB05 BB07 BB14 BB17 BB26 CC01 CC05 CC09 DD02 DD17 FF27 GG01 BB02 BB02 PP01

Claims (2)

[Claims] 1. A stator having a casing for guiding a flow of a fluid, a stator frame mounted on the casing, a stator winding mounted on the stator frame, and rotating outside the stator. A rotor, an outer rotor-type rotating electric machine including a yoke supporting the rotor,
A fluid blade integrated rotary electric machine, wherein a fluid blade that rotates integrally with the rotor and the yoke is provided on an outer periphery of the yoke. 2. The electric rotating machine with integral fluid vanes according to claim 1, wherein said fluid vanes are arranged so as to act on the flow of said fluid.