JPH0727271U - Liquid cooling device for frame of rotating electric machine - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a frame cooling device that increases the heat dissipation area of the outer peripheral surface of the inner cylinder and obtains an average heat dissipation effect, and as a result, improves the cooling effect of the stator. [Structure] A plurality of guide plates are radially provided between the outer peripheral side of the inner cylinder of the frame and the inner peripheral side of the outer cylinder, and one end of the guide plate is one end plate on the conduction side and one end on the anti-conduction side. The end portions of the other guide plates are fixed to the end plates on the anti-conduction side and the conduction side alternately with a predetermined gap provided only on one side. Further, a plurality of heat dissipation projection plates are radially fixed to the outer peripheral surface of the inner cylinder between the respective guide plates with a predetermined gap provided between the inner peripheral surface of the outer cylinder and both end plates. Next, a liquid injection port and a liquid discharge port are provided at predetermined positions on the left and right outer cylinders of the guide plate whose both ends are fixed to the end plate.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a liquid cooling device for a frame of a rotating electric machine, which cools heat generated by a stator of the rotating electric machine.

[0002]

[Prior art]

 Conventionally, a plurality of radial guide plates are provided between the inner and outer cylinders of the frame, and both ends of the guide plate are welded and fixed to the end plates that support both ends of the inner cylinder to form a plurality of sealed pockets. In this conventional frame, cooling water is poured from one side (for example, the anti-conduction side) of each pocket and drained from the other side (the conduction side) to cool the heat generated by the stator. The heat sink is not attached. In addition, a stator core having a coil attached to its inner diameter is fitted in the inner cylinder. (Not shown)

[0003]

[Problems to be solved by the device]

 In the frame of the conventional structure, the heat generated by the stator is transmitted to the outer peripheral surface of the inner cylinder, and the surface is cooled by the cooling liquid and drained.Besides, the liquid is injected from one direction and discharged from the other. However, a satisfactory cooling effect was not obtained, and downsizing and power-up were not possible. An object of the present invention is to provide a frame cooling device that increases the heat dissipation area of the outer peripheral surface of the inner cylinder and obtains an average heat dissipation effect, and as a result, improves the stator cooling effect. This is particularly noticeable in a fully closed rotary machine.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, a plurality of guide plates are radially provided between the outer peripheral side of the inner cylinder of the frame and the inner peripheral side of the outer cylinder, and one end of the guide plate is anti-conducting with the conducting side. The other guide plate is alternately fixed to the end plate on the anti-conduction side and the end plate on the conduction side with a predetermined gap only on one side. Further, a plurality of heat dissipation projection plates are radially fixed to the outer peripheral surface of the inner cylinder between the respective guide plates with a predetermined gap provided between the inner peripheral surface of the outer cylinder and both end plates. Next, a liquid injection port and a liquid discharge port are provided at predetermined positions on the outer cylinders on the left and right of the guide plate whose both ends are fixed to the end plates.

[0005]

[Action]

 In the frame configured as described above, the cooling liquid alternately flows, for example, from the anti-conduction side to the conduction side and from the conduction side to the anti-conduction side in the chamber formed by each guide plate. Further, at that time, the cooling liquid flows between the plurality of protruding heat radiation plates provided on the outer peripheral surface of the inner cylinder, so that the cooling surface area increases, and therefore, a satisfactory cooling effect can be obtained against the accumulated heat generated by the stator. be able to.

[0006]

【Example】

 Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 is a structural view of a frame of a rotary electric machine with a liquid cooling device according to the present invention. FIG. 1A is a cross-sectional view taken along the line CC of the outer cylinder of the frame, and FIG. FIG. 3 is a side view of a frame for cutting a part of a cylinder. 2 is a perspective view of the liquid cooling device of the frame, and FIG. 3 is a perspective circuit diagram of the cooling liquid in the device. In FIG. 1, a plurality of guide plates A, B1, B2, B11, B21, B12, B22, B13 are radially provided between the outer peripheral side of the inner cylinder 1 of the frame 5 and the inner peripheral side of the outer cylinder 4 to guide the guides. Both ends of the plate A are welded and fixed to the end plate 3 on the anti-conduction side and the end plate 3a on the conduction side. The other guide plate is welded and fixed at its one end to the end plate 3 on the anti-conduction side and the end plate 3a on the conduction side by providing a predetermined gap G1 and alternately by welding to the respective end plates. That is, B1, B11, B12 and B13 are fixed to the end plates B2, B21 and B22 to the end plate 3a.

Further, a plurality of radial heat radiation projection plates 2 are provided on the outer peripheral side of the inner cylinder 1 partitioned by the guide plates, the inner peripheral surface of the outer cylinder 4 and the predetermined gap G2, and the end plates 3 and 3a are predetermined. The gap G3 is provided and welded and fixed. Further, a liquid injection port 6 and a liquid discharge port 6a are provided on the left and right outer cylinders of the guide plate A on the anti-conduction side. If the number of guide plates is even, the inlet and outlet are provided on one end plate side, but if the number is odd, both end plates are provided. A liquid cooling device for a rotating electrical machine frame configured as described above. A stator core 8 having a coil is fitted to the inner diameter of the inner cylinder 1.

Next, the operation will be described. When the cooling liquid is flowed from the liquid injection port 6 while the rotating electric machine is operating under load, as shown in Fig. 3, it circulates by the guide plate and finally absorbs heat from the liquid discharge port 6a. It is collected and discharged. Therefore, the stator can be cooled on average. Further, since the total surface area of the outer circumference of the inner cylinder 1 can be increased by the heat dissipation projection plate 2 and the heat dissipation area can be increased, the cooling effect of the stator is improved.

[0009]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects. (B) Since the plurality of heat dissipation projection plates 2 are provided on the outer peripheral surface of the inner cylinder 1, the total surface area of the outer peripheral surface of the inner cylinder for releasing heat generated from the stator can be increased. (B) Since one end of the guide plate that serves as a passage for the cooling liquid is welded and fixed to the end plate 3 on the anti-conduction side and the end plate 3a on the conduction side by alternately providing a predetermined gap G1, cooling while circulating. The flow of liquid allows the stator to cool on average. (C) As a result, the cooling effect of the stator can be improved, and the rotary electric machine can be downsized and powered up. (E) The effect is remarkable in the fully closed type rotating machine.

[Brief description of drawings]

FIG. 1 is a frame structure diagram of a rotary electric machine with a liquid cooling device,
FIG. 7A is a cross-sectional view taken along the line C-C of the outer cylinder partially cut, and FIG. 8B is a frame side view of the outer cylinder partially cut.

FIG. 2 is a perspective view of a liquid cooling device for a frame.

FIG. 3 is a perspective circuit diagram of a cooling liquid.

[Explanation of symbols]

 1 inner cylinder 2 heat dissipation projection plate 3 end plate 3a end plate A guide plate B1 guide plate B11 guide plate B12 guide plate B13 guide plate B2 guide plate B21 guide plate B22 guide plate 4 outer cylinder 5 frame 6 injection port 6a drain port 7 Mounting foot 8 Stator core G1 Gap G2 Gap G3 Gap

Claims (2)

[Scope of utility model registration request] 1. A frame of a liquid-cooled rotary electric machine, wherein a frame has an inner cylinder and an outer cylinder provided between the outer peripheral side of the inner cylinder (1) and the inner peripheral side of the outer cylinder (4) of the frame (5). A plurality of guide plates are provided on one of the guide plates, and one of the guide plates (A)
Is adjusted to the inner dimensions of the end plate (3) and the end plate (3a), and the other guide plates are made shorter than the length of the guide plate (A) and are alternately changed to the end plate (3) and the end plate (3a). A liquid cooling device for a frame of a rotating electric machine, comprising a liquid injection port (6) and a liquid discharge port (6a) which are fixed and are provided on an outer cylinder (4). 2. A plurality of heat dissipation protrusion plates (2) are provided on the outer peripheral side of the inner cylinder (1) between the guide plates, and a predetermined gap (G2) is formed between the inner peripheral surface of the outer cylinder (4), And both end plates (3), (3a)
The liquid cooling device for a frame of a rotary electric machine according to claim 1, wherein a predetermined gap (G3) is provided to the inner side of the inner surface of the inner cylinder (1) and is fixed to the outer peripheral surface of the inner cylinder (1).