JPH06339251A - Cooler for electric rotating machine - Google Patents

Abstract

PURPOSE:To provide a large electric rotating machine equipped with a cooler which can be transported with said machine in one united body. CONSTITUTION:A cooler 1 is located at the upper corners of a frame 2 at both sides of a shaft 3 of an electric rotating machine throughout the overall length and in the shaft direction of the frame, by which the space of frame 2 can be effectively utilized, the electric rotating machine assembled in a compact size in one united body together with the cooler 1 can be transported as it is, thereby shortening the assembly time period in the field and maintaining the initial quality.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooler attached to a rotating electric machine.

[0002]

2. Description of the Related Art A rotating electric machine is equipped with a cooler for cooling the inside. If the cooler is an air-water cooler,
A plurality of pipes are arranged in a cooler box, cooling water is made to flow from the outside into the pipes, and air inside the rotary electric machine is circulated in a space outside the pipes for heat exchange. The layout of the cooler is roughly classified into a horizontal type and a top type. FIG. 2 is a configuration diagram of a rotary electric machine provided with a horizontal type cooler, (A) is a front view,
(B) is a B direction arrow view of (A). In FIG. 2, the cooler 1 is vertically arranged in the frame 1 on both axial sides. In this shape, the height of the rotating electric machine is not high, but the width is large. 3 is an axis. 3A and 3B are configuration diagrams of a rotary electric machine including a top-mounted cooler, FIG. 3A is a front view, and FIG. 3B is a view in the direction B of FIG. In FIG. 3, the cooler 1
Are horizontally arranged in the upper part of the frame 1 of the rotating electric machine. In this shape, the width of the rotating electric machine is narrow, but the height is slightly higher. 4A and 4B are configuration diagrams of a rotating electric machine including another top-mounted cooler, FIG. 4A is a front view, and FIG. 4B is a view in the direction B of FIG. In FIG. 4, the cooler 1 is arranged vertically on both sides in the axial direction in the upper part of the frame 1 of the rotating electric machine. In the form of FIG. 4, the width of the rotating electric machine is narrower than that of FIG.
Will be higher than the example.

[0003]

In a conventional rotary electric machine equipped with a horizontal type and a top type cooler, when the cooler is integrally transported in an assembled state, the horizontal type has a restriction on the width of the road. As a result, the top-mounted type imposes restrictions on the transport height. When disassembling and transporting and assembling on site, man-hours are required, and especially when assembling and installing overseas, the work cost increases if the number of man-hours for on-site work increases. In addition, the on-site assembly may cause deterioration of insulation in terms of quality. By integrally transporting the rotating electric machine, it is possible to shorten the on-site assembly period and maintain the quality of the windings and magnetic poles.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and provide a large rotating electric machine which is equipped with a cooler and which is transported integrally.

[0005]

In a rotary electric machine in which a cooler is mounted in a frame, the cooler is directed in the ventilation direction over the entire axial length of the frame at the corners on both sides of the frame with the shaft in the frame interposed therebetween. The above-mentioned object is achieved by being arranged.

Further, if the coolers are symmetrically arranged at the corners on both sides of the upper part in the frame, it is suitable for the transportation as a unit.

[0007]

According to the present invention, the space in the corner of the rotating electric machine is utilized by arranging the cooler in the ventilation direction over the entire length in the axial direction of the frame at the corners on both sides of the upper part with the shaft in the frame interposed therebetween. However, the cooler can be mounted without increasing the size by only slightly increasing the dimension in the height direction.

[0008]

1 is a block diagram of a rotary electric machine provided with a cooler according to an embodiment of the present invention, (A) is a front view, and (B) is a view in the direction of arrow B in (A). In FIG. 1, the cooler 1 is arranged in the upper part of the frame at the corners on both sides of the shaft 3 with the shaft 3 interposed therebetween, and extends in the ventilation direction over the entire axial length of the frame 1. In that case, the cooler 1 is diagonally arranged symmetrically in the corner of the frame 1. The cooler 1 is fixed to the frame 1 by tightening a flange of the frame 1 and bolts. By doing this, it is possible to increase the height of the rotating electrical machine slightly compared to the conventional one,
The cooler 2 can be mounted without changing the physique. The air inside the rotating electric machine passes through the rotor and the stator from both sides in the axial direction of FIG.
It circulates into the rotating electric machine from both sides in the axial direction. In FIG. 1 (B), the air in the frame 1 rises by an axial fan, is divided into left and right in the center, passes through the cooler 1, is heat-exchanged, and circulates in the rotating electric machine. A rotating electric machine equipped with a cooler according to the present invention can be mounted with a cooler and can be assembled and transported integrally, which can reduce the number of assembly steps at the site and stabilize the quality.

[0009]

According to the present invention, the cooler is arranged diagonally and symmetrically in the upper part of the frame of the rotating electric machine with the shaft sandwiched between the corners on both sides in the ventilation direction. The space of the frame is effectively used over the entire length in the axial direction of the frame, the cooler is installed without increasing the size of the frame, and the rotating electrical machine is transported while assembled as a unit. It is possible to shorten and maintain quality.

[Brief description of drawings]

1A and 1B are configuration diagrams of a rotating electric machine including a cooler according to an embodiment of the present invention, FIG. 1A is a front view, and FIG. 1B is a view in the direction B of FIG.

FIG. 2 is a configuration diagram of a rotating electric machine including a horizontal type cooler,
(A) is a front view, (B) is a B direction arrow view of (A).

FIG. 3 is a configuration diagram of a rotating electric machine including a top-mounted cooler,
(A) is a front view, (B) is a B direction arrow view of (A).

4A and 4B are configuration diagrams of a rotating electric machine provided with another top-mounted cooler, in which FIG. 4A is a front view and FIG. 4B is a view in the direction B of FIG.

[Explanation of symbols]

 1 cooler 2 frame 3 axis

Claims (2)

[Claims] 1. A rotating electric machine having a cooler mounted in a frame, wherein the cooler is arranged at corners on both sides of an upper part of the frame in the upper and lower sides of the frame in the ventilation direction over the entire axial length of the frame. A cooler for a rotating electric machine characterized by the above. 2. The cooler for a rotating electric machine according to claim 1, wherein the coolers are symmetrically arranged at corners on both upper sides in the frame.