JPS6241565Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a ventilation structure for a rotating electric machine housed in a cabinet.

Conventionally, there have been devices of this type as shown in FIGS. 1 to 3. In the figure, 3 is a common bed having a space between the bottom plate and the top plate, 2 is a box-shaped cabinet placed on the common bed 3, 21 is its front plate, 14 is a removable back plate, 22 is a side plate provided at each end in the longitudinal direction of the cabinet 2, and 12 is an air intake port provided at the upper part of the back plate 14, to which an armor window is attached. Reference numeral 13 denotes an exhaust port provided at the bottom of each side plate 22, to which an armor window is attached. Reference numeral 31 indicates a rotating electric machine storage chamber provided at the bottom of the cabinet 2 at intervals from each side plate 22, 32 a top plate of the rotating electric machine storage chamber 31, and 33 a floor 3 provided at intervals from the top plate 32.
4 is a control device storage room, and a back wall 35 is attached to the floor 34 at a predetermined distance from the back plate 14. Reference numeral 1 denotes a horizontal-axis rotating electrical machine mounted on a common bed 3 housed in a rotating electrical machine storage chamber 31 via a vibration-proof rubber 4, 40 a frame of the rotating electrical machine 1, and 41 a rotating machine formed in the axial direction of the frame 40. An intake window 42 is opened in the electrical equipment storage chamber 31, and an upper exhaust window 42 is formed at the upper part of the center portion of the frame 40. Note that illustrations of the iron core, coil, cooling fan, etc. inside the rotating electrical machine 1 are omitted. A control device 5 is attached to a wall 35 housed in a control device storage room 33 and controls the rotating electric machine 1. A control device 6 is attached to the front plate 21 of the cabinet 2 so as to be openable and closable and is used for normal inspection of the control device 5. It's a door. The control device 5 and the rotating electrical machine 1 are electrically connected by a cable. The back plate 14 is provided with a lead-in port (not shown) for leading in an external cable. The back plate 14 and the wall 35 can be removed by removing an external cable passing through the back plate 14, and in the event of a failure, etc., they can be removed to perform maintenance and inspection of the control device 5.

51 is the back plate 14 in the cabinet 2.
and the wall 35 and communicate between the exhaust port 12 and the rotating electrical machine storage chamber 31;
53 is a central ventilation passage formed between each side plate 22 and the end wall of the rotating electric machine storage chamber 31. 52 is an exhaust path communicating with the exhaust port 13; 36 is the upper exhaust window 42 of the rotating electric machine 1;
This is a ventilation passage that communicates between the central ventilation passage 52 and the central ventilation passage 52, and its periphery is covered with a ventilation guide 43.
11 is a gasket for preventing wind leakage, 10 is an intake path 5
1. This is a sound absorbing material that is attached to the walls surrounding the central ventilation passage 52 and the exhaust passage 53 to reduce ventilation noise and magnetic noise when the rotating electric machine rotates once.

The rotating electric machine 1 is connected to the common bed 3 via the anti-vibration rubber 4.
, cover it with a cabinet 2, and tighten the cabinet 2 to the common bed 3 (tightening bolts and the like are not shown). After fastening the wall of the control device storage chamber 33 to the floor 34 and fastening the control device 5 to the wall 35, the back plate 14 is fastened.

Next, the ventilation operation of a conventional rotating electric machine device will be explained with reference to FIGS. 1 to 3. When the rotating electric machine 1 rotates, cooling air is sucked in from the intake port 12 by the cooling fan inside the rotating electric machine 1, and the air passage 51 → the intake window 41 of the rotating electric machine 1 → the inside of the rotating electric machine 1 → the upper exhaust window 42 → ventilation. Path 36 → Central ventilation path 52 → Exhaust path 5
3 and is discharged from the exhaust port 13 to cool the rotating electric machine 1. The control device 5 is indirectly cooled by the wall 35 facing the intake channel 51 .

In FIGS. 2 and 3, arrow A indicates the direction of the wind from the front toward the paper, and arrow B indicates the direction of the wind from the front toward the paper.

As mentioned above, conventional rotating electrical machine storage rooms have only one exhaust window through which the air discharged from the rotating electrical machines passes, making it difficult to flow enough cooling air to match the amount of heat generated by the rotating electrical machines. The drawback was that the output was kept low.

This idea was made to eliminate the above-mentioned drawbacks of the conventional system. By forming an exhaust ventilation path in the common bed, there are two exhaust windows for the rotating electric machine, increasing the amount of cooling air. The purpose of this invention is to provide a rotating electric machine that can perform the following functions.

An embodiment of this invention will be described below with reference to the drawings. 4 to 6, 15 is a lower exhaust window provided at the lower center of the frame 40 of the rotating electrical machine 1, 18 is an opening formed in the center of the top plate of the common bed 3, and 20 is an exhaust path. 53, an opening formed at the end of the top plate of the common bed 3, and 19 communicates between each opening 18 and 20 to utilize the space between the top plate and the bottom plate of the common bed 3. 37 is a ventilation passage that communicates between the lower exhaust window 15 of the rotating electrical machine 1 and the opening 18 of the common bed 3; 16 is a ventilation guide that surrounds this ventilation passage 37; It is composed of an L-shaped member provided between two mounting legs. Reference numeral 17 denotes a gasket made of sponge-like rubber for preventing leakage of exhaust gas between the ventilation guide 16 and the common bed 3.

Note that the other configurations are the same as those of the conventional one, so explanations will be omitted.

Next, the ventilation operation in this rotating electric machine device will be explained. The wind sucked in from the intake port 12 is introduced into the rotating electrical machine 1 through the intake window 41 of the rotating electrical machine 1 via the intake path 51. A portion of the wind that cools the rotating electric machine 1 flows from the upper exhaust window 42 to the exhaust passage 53 through the central ventilation passage 52 as in the conventional case. In addition, the remaining part of the air flows from the lower exhaust window 15 of the rotating electric machine 1 to the ventilation path 3.
7→ventilation path 19 of common bed 3→exhaust path 53 in this order. The wind that enters the exhaust passage 53 from above and below and merges is discharged from the exhaust port 13.

Note that the sound reduction effect can be improved by pasting a sound absorbing material (not shown) around the ventilation passage 19 in the common bed 3. Further, the control device 5 may be attached to the floor 34 of the control device storage chamber 33.

As described above, according to this invention, the top plate of the common bed is provided with openings that communicate with the lower exhaust window of the rotating electrical machine and the exhaust path of the cabinet, so that the exhaust air that cools the rotating electrical machine is routed to the common bed. Since the air is discharged through the ventilation path formed between the top plate and the bottom plate, the area of the exhaust window of the rotating electric machine can be approximately doubled compared to conventional ones.
Therefore, the amount of cooling air passing through the rotating electric machine increases, and if the size of the cabinet is the same as the conventional one,
This has the effect of increasing the output of the rotating electric machine.

[Brief explanation of the drawing]

Figures 1 to 3 are diagrams showing a conventional rotating electric machine storage chamber, in which Figure 1 is a back view partially shown in cross section along the - line in Figure 2, and Figure 2 is a back view partially shown in cross section as shown in Figure 1. FIG. 3 is a side view partially shown in section along the line - in FIG. FIG. 4 is a back view partially shown in section along the - line in FIG.
The figure is a side view partially shown in cross section taken along the line - in FIG. 4, and FIG. 6 is a side view partially shown in cross section taken along the line - in FIG. 4. In the figure, 1 is a rotating electric machine, 40 is its frame, 41 is its intake window, 42 is an upper exhaust window, 15
2 is the lower exhaust window, 2 is the cabinet, 12 is its intake port, 13 is the exhaust port, 21 is the front plate, 14 is the back plate, 22 is the side plate, 31 is the rotating electric machine storage room, 33
is a control device storage room, 3 is a common bed, 19 is its ventilation path, 5 is a control device, 36 and 37 are ventilation paths, 5
1 is an intake path, 52 is a central ventilation path, 53 is an exhaust path,
16 and 43 are ventilation guides. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] A common bed, a box-shaped device placed on this common bed, having an intake port at the top of the back plate, and exhaust ports at the bottom of both side plates, and rotating at the bottom at intervals from each side plate. A cabinet is provided with an electrical equipment storage room, and a control device storage room is provided in the upper part at a distance from the rotating electrical equipment storage room and the back plate, respectively, and a cabinet is stored in the rotating electrical equipment storage room and placed on the common bed. A horizontal rotating electric machine, which has intake windows opening into the rotating electric machine storage chamber at both ends of the frame and exhaust windows at the upper and lower parts of the central part of the frame, and a control device for a rotating electric machine mounted on the floor or wall and stored in the control device storage chamber, and in the cabinet,
An air intake path is formed between the back plate and the control device storage chamber and communicates between the intake port and the rotating electrical machine storage chamber, and an air intake path is formed between the rotating electrical machine storage chamber and the control device storage chamber and the air intake path is formed between the rotating electrical machine storage chamber and the control device storage chamber. A central ventilation path that communicates with the exhaust window at the top of the electrical equipment storage room and reaches each side plate of the cabinet, and a central ventilation path that is formed between each of the side panels and the rotating electrical equipment storage room, and that connects the central ventilation opening and the exhaust port. A rotating electric machine device, wherein an exhaust passage is provided in communication with each other, and a ventilation passage is provided in the common bed to communicate between an exhaust window at a lower part of the rotating electric machine and an exhaust passage of a cabinet.