JPS5961448A - Rotary electric machine - Google Patents

Abstract

PURPOSE:To enable to continuously operate a rotary electric machine even if one air cooler becomes defective by communicating the first and second suction holes formed at the left and right sides of a stator frame via a duct and balancing the cooling effects at the left and right sides. CONSTITUTION:The air of the side of one of the first and second air coolers 13a, 13b, becoming defective is shut off by the first and second dampers 16a, 16b, and suction holes 11a, 11b provided at the left and right of a stator frame 4 are allowed to communicate via a duct 17. In a normal operation state, the ventilations of the left and right sides of a rotary electric machine are not unbalanced, and local overheat can be eliminated. If any of the coolers 13a, 13b become defective or loses its cooling function due to interruption of water, continuous operation can be executed by closing any of the dampers 16a, 16b of the side being defective.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotary military aircraft having cooling fans on both sides of one rotor, such as a turbine generator.

A conventionally known rotating electrical machine of this type is shown in Fig. 1. In FIG. 1, (1) is the rotor of a rotating military aircraft, (2a) and ('2b) are the first rotors provided on both sides of the rotor il+. The second fan, (3) LI'i Guamiko,
(4) is the stator frame, (5) is the ventilation pipe provided inside the stator frame (4), and (6) is inside the stator frame (4)? Partition plates that partition in the axial direction, (7n is the stator core, (8) is the stator coil, (9) is the wind guide, (10) is the bearing device that supports the rotor (1), (1la), (llb) )!/'i stator First and second intake holes provided in the stator cloth, (12) are exhaust holes provided in the stator frame (4) Vc, (13a'''), (
13b) is the first one that cools the cooling medium (air). The second cooler (air cooler), (14), (15) constitutes the cooling air ventilation circuit. This is the second ventilation duct.

Next, let's talk about the ventilation circuit. 1st. 2nd air cooling@(13a), (13b) Air Vi cooled by IC 1st. Second intake hole (lla).

(1lb) into the stator frame (4), the first. It is forcibly sucked in by the second fans (2a) and (2b), and at the same time is forcibly pushed into the stator frame (4). Some of this cooling air is used by the rotor (
1) and the stator core (7), and the other part leads to the ventilation pipe (5) K, and the stator iron, t>(7]]C is provided f
It advances toward the shaft center in a radial duct (not shown), and reaches between the rotor (1) and the stator core (7). These cooling airs are again directed radially outward through the duct (not shown) and are discharged from the outer periphery of the stator core (7). ), and again Kl, the second air cooler (13a
), leading to (13b).

The circulation of this cooling air is as shown by the arrow, and the rotating rock is cooled by this circulation.

However, in the conventional ventilation circuit 1, the cooling air is circulated only through the second air cooler (13a).

(13b) It is independent from K.

For this reason, 1. Second air cooler (13a).

(13b) If the ventilation resistances of the left and right ventilation circuits IK become unbalanced due to dust being clogged inside (13b), the cooling effect of the rotating electric machine will become unbalanced, causing local overheating. Furthermore, if the first air cooler (13a) breaks down and the cooling water is cut off, the first air cooler (13a)
There was a serious drawback in that the side cooling function was completely lost, making it impossible to operate.

In order to eliminate the above-mentioned drawbacks of the conventional technology, this invention has a 2-t G-tension, and has a 1. Second 1 intake hole (lla).

(llb)' through a communication duct to balance the left and right cooling effects.

Sara (C No. 1. Air cooling of dyeing 2 '11 (13a)
.

(13b) fails, the failed first. By closing all the dampers after 111 of the second air cooler (13a) and (13b), all the cooling air is transferred to a healthy first air cooler. Second air cooler (13a), (13b
)' through the above communicating duct? The purpose of the present invention is to provide a rotating electric machine which can be operated continuously by distributing the rotating electric machine to the left and the right.

An embodiment of this power generation will be explained below based on the drawings.

In Figure 2, (16a) and (, 16b) are the first ducts in the ventilation duct 1-(14). a second air cooler (13a),
(13b) First and second dampers are provided to open and close each cooling circuit corresponding to the VC; (17) are first and second dampers provided on the left and right sides of the stator frame (4). Second intake hole (I
la).

Note that the other configurations are the same as the conventional ones, so a description thereof will be omitted.

As described above, this invention has the following features: Second air cooler (1
In the ventilation duct (14) that guides the cooling medium (air) to 3a) and (13b), the first and second air coolers (13a)
, (13b), the first . Second air cooler (1
3a).

First and second dampers (16a) and (16b) capable of blocking air passing through the stator frame (13b) are provided, and furthermore, first and second intake holes (16a) and (16b) are provided on the left and right sides of the stator frame (4). lla
), (llb) are provided.

Now, if the first air cooler (13a) is out of order, by closing the first damper (16a), all the cooling air will pass through the healthy second air cooler (13b) as shown by the arrow. Furthermore, the communication duct 1-(17) may be used to branch left and right.
), ('16b) 1■ Although the ventilation duct (14) is provided, a second ventilation duct (15) may also be provided. Also the first
．． (6) also depends on the shape and structure of the second dampers (16a) and (16b). Furthermore, the communication duct) (17
) is shown outside the stator frame (4), but the stator frame (4) is shown outside the stator frame (4).
), and the number may be plural.

This invention is constructed as described above, and includes the first and second '4!
Air cooling a (13a), (13b) (1) Complete ventilation guide on the failed side 1. Second damper (16a).

(16b) Intake holes (IIA), (LLB)', cut off by VC and provided on the left and right sides of the stator frame (4)! i = Because of the communication through the communication duct (17), under normal operating conditions, the left and right ventilation imbalance of the rotating electrical machine is eliminated, and local overheating is eliminated. Also number 1. If the second air cooler C13a), (13b) loses its cooling function due to a failure or water outage, the first air cooler C13a), (13b) on the failed side loses its cooling function. By closing the dampers (16a) and (16b)' of Ka2,
Continuous operation becomes possible. Furthermore, man 1. Second air cooling! Capacity of (13a), (13b)> Yohi communication duct) (1
Depending on the selection of ventilation resistance in 7), '1. Ka2 air cooling! Even in the case of a failure in either (13a) or (13b), the rotating electric machine can be operated at its rated value (111!), which is extremely advantageous.

As described above, according to the present invention, the ventilation imbalance is eliminated in the normal operating state, local overheating is eliminated, and the first. In the event that either one of the air coolers in fan 2 fails, continuous operation becomes possible, and rated operation of fan K becomes possible, among other effects.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of a conventional rotating electrical machine, and FIG. 2 is a side sectional view showing an embodiment of the rotating electrical machine according to the present invention. In the figure, (1) is the rotor, (2a) and (2b) are the first rotor. Second fan, (3) is stator, (4) is stator frame, (5) is ventilation pipe, (6) is partition plate, (7) is stator core, (8) is stator coil, (9) is the wind guide, (10
) is a bearing device, (11a) and (flb) are first and second intake holes, (12) is an exhaust hole, and (13a). (13b) is the first. a second air cooler, (14); (15) is the first. Second ventilation duct, (16a). (16b) is the first. The second damper (17) is a communication duct. In addition, the same symbols in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of Claims] 1. A rotor rotatably housed in a stator frame, a first rotor housed on both sides of the rotor in the stator frame, and a second rotor for blowing a cooling medium to a central part. 2 fans, said first
．． A first fan is provided in the stator frame in correspondence with the second fan and sucks a cooling medium into the stator frame. a second intake hole;
An exhaust hole provided in the center of the stator frame for discharging the cooling medium inside the stator frame, the exhaust hole and the first. a ventilation duct that communicates with the second intake hole; The first air intake hole installed between the second intake hole and the exhaust hole. a second cooler; and the first cooler. Second
A communication duct is provided which communicates the intake hole of the first. A rotary military aircraft characterized in that the amount of cooling medium sucked into the stator frame from the second intake hole is balanced. 2. The ventilation duct is provided with a first damper that blocks the ventilation path of the first cooler and a damper @2 that blocks the ventilation path of the second cooler. The rotating electric machine according to item 1. 3. The communication duct is installed outside the stator frame!
The rotating electrical machine according to the first or second term of the fm range. 4. The rotating electric machine according to claim 1 or 2, wherein the communication duct is provided within the stator frame.