JPH058731Y2 - - Google Patents

Description

[Detailed description of the invention] A. Field of industrial application The present invention relates to an improvement of a device for air-cooling heat-generating equipment, such as a rectifier unit, in a power distribution board that houses such equipment. .

B. Summary of the invention The present invention accommodates devices with different calorific values, such as a forward return rectifier and a reverse return rectifier, and is equipped with a heat exchanger and a fan for air-cooling these devices. In a system in which at least two distribution panels are arranged adjacent to each other, a ventilation hole is provided in the partition wall between both distribution panels, and a wind guide is provided so that the air from each fan is blown into the other adjacent distribution panel through the ventilation hole. By providing a switchboard, even if the heat generation amount of the equipment in each switchboard differs, by circulating air between adjacent switchboards, it is possible to equalize the temperature inside the switchboard. The device is characterized in that it is possible to reduce the size of the entire device by standardizing the heat exchangers without using heat exchangers with individual capacities.

C. PRIOR TECHNOLOGY Conventionally, for example, in a power distribution board that houses heat-generating equipment such as a rectifier, a heat exchanger is provided inside and a fan is installed to circulate air.
The atmosphere inside the panel was cooled using a wind cooling method.
When a plurality of switchboards housing different devices are installed adjacent to each other, heat exchangers with different capacities are individually installed depending on the amount of heat generated by the housed devices.

D Problems that the invention aims to solve In the conventional switchboards mentioned above, the amount of heat generated varies depending on the equipment housed, resulting in differences in internal temperature, so cooling heat exchangers with different capacities are used for each switchboard. This is indispensable and is an impediment to standardization. In addition, despite the differences in heat generation between devices, if you try to standardize the cooling heat exchanger for each power distribution board, it will be wasteful unless the capacity is matched to the device that generates the largest amount of heat. However, there is a problem in that the size of the device increases.

E. Means for Solving the Problems In the present invention, in order to solve the above-mentioned conventional problems, devices with different heat outputs, such as forward conversion rectifiers and reverse conversion rectifiers, are housed individually and installed adjacent to each other. A ventilation hole was provided in the partition wall between the distribution panels, and a wind guide such as a guide plate was provided so that the entire air from the fan of each distribution panel was blown into the other distribution panel through the ventilation hole.

F Effect The devices in each switchboard have different amounts of heat. However, since the wind from the fans of each switchboard is guided by the wind guide and circulated between the two adjacent switchboards via the ventilation openings, the internal temperature is made uniform. Therefore, irrespective of differences in the calorific value of the housed devices, the capacities of the heat exchangers of adjacent switchboards can be unified, efficient cooling can be performed, and the entire device can be downsized.

G. Embodiment FIGS. 1 to 3 show an embodiment of the present invention, in which FIG. 1 is a perspective view of a switchboard equipped with an air cooling device of the present invention, FIG. The figure is a sectional view of FIG.

In Figures 1 to 3, 1 and 21 are cases of switchboards installed adjacent to each other, and each case 1,
Inside 21, fan units 2, 22, rectifier units 3, 23, and heat exchangers 4, 24 are accommodated, respectively. In this embodiment, 3 is a forward conversion rectifier unit, and 23 is a reverse conversion rectifier unit, and although both have different calorific values, the heat exchangers 4 and 24 have the same capacity. The fan units 2 and 22 each have fans 5 and 25 that blow up the air inside the switchboard upward, and the doors 6 and
Ventilation gaps 9, 29, 10, 30, 11, and 31 are provided in the case 1 between the rear plates 7, 27, and the top plates 8, 28. In the partition wall 12 between the two switchboards, there is a ventilation hole 13 located above the fan units 2, 22 and communicating between the two switchboards.
is being made. The guide plate 14 has the ventilation opening 1
3 obliquely to form two ventilation passages 15, 16 partitioned thereby, each of the front and rear ends reaching the inner front and rear corners of both fan units 2, 22,
A portion of the air blown out from each fan 5, 25 is guided so as to flow through the ventilation port 13 into both switchboards. Between the upper and lower sides of the fan units 2, 22, the rectifier units 3, 23, and the heat exchangers 4, 24, partitions 17, 37 are provided at intermediate portions between the front and rear sides to divide the inside of the switchboard into two parts, front and rear.

Therefore, the rectifier units 3 and 23 in both the switchboard cases 1 and 21 generate heat due to the rectification action, respectively. The heat exchangers 4 and 24 cool the air inside the cases 1 and 21 by exchanging heat between air and water. Then, the fans 5 and 25 blow air up into the upper gaps 11 and 31 in order to circulate the air inside the cases 1 and 21. Part of the blown up air is shown in Figure 1.
As shown by arrows in FIG. 3, the air is guided by the guide plate 14, passes through the ventilation passages 15 and 16, flows into the other case 1 and 21, and descends through the front and rear gaps 9 and 30. In this way, the two adjacent switchboard cases 1,
Because the air in the rectifier units 3 and 21 circulates with each other,
The temperature inside both cases 1 and 21 becomes uniform.

4 to 6 show other embodiments of the present invention. FIG. 4 is a perspective view of a switchboard equipped with an air cooling device according to another embodiment of the present invention, FIG. 5 is a front view thereof, and FIG. 6 is a sectional view of FIG. 5. In FIGS. 4 to 6, the same components as those in FIGS. 1 to 3 are denoted by the same reference numerals, and explanations thereof will be omitted.

In another embodiment shown in FIGS. 4 to 6, the ventilation opening 20 is provided at approximately the same height as the fan units 2, 22, and the guide plates 18, 38 are provided in front of the fan units 2, 22, respectively. Alternatively, it is provided in the rear ventilation gaps 29, 10 so as to be inclined downward toward the ventilation opening 20.

In the case of this embodiment, some of the air blown up into the upper gaps 11 and 31 as shown by the arrows in FIGS. It flows into the other case 1, 21 and descends through the front and rear gaps 9, 30. In this way, the air in the two adjacent switchboard cases 1 and 21 circulates with each other, and the temperature becomes uniform.

H. Effects of the invention As described above, in this invention, devices with different heat outputs such as forward conversion rectifiers and inverse conversion rectifiers are housed individually, and ventilation holes are installed in the partition walls between switchboards installed adjacent to each other. At the same time, a wind guide such as a guide plate was installed so that the air from the fan of each switchboard was blown into the other switchboard through the ventilation opening, so even if the amount of heat generated by the equipment in each switchboard was different, By circulating air between adjacent switchboards, it is possible to equalize the temperature within the switchboards. Therefore, it is possible to standardize heat exchangers instead of using heat exchangers with different capacities. This has the effect that it is possible to reduce the size of the device as a whole.

[Brief explanation of the drawing]

Figures 1 to 6 show an embodiment of the present invention, in which Figure 1 is a perspective view of a switchboard equipped with the air cooling device of the present invention, Figure 2 is a front view of the same, and Figure 3 is a perspective view of a switchboard equipped with an air cooling device of the present invention. FIG. 1 is a cross-sectional view, FIG. 4 is a perspective view of a switchboard equipped with an air cooling device according to another embodiment of the present invention, FIG. 5 is a front view thereof, and FIG. 6 is a cross-sectional view of FIG. 1, 21... Switchboard case, 3, 23... Rectifier unit (equipment), 4, 24... Heat exchanger, 5,
25... Juan, 12... Bulkhead, 13,20...
Ventilation holes, 14, 18, 19...Guide plate (wind guide).

Claims (1)

[Scope of utility model registration request] In a device in which at least two power distribution boards each housing devices with different calorific values and each equipped with a heat exchanger and an air cooling fan are arranged adjacent to each other, a ventilation hole is provided in the partition wall between the two power distribution boards, and An air cooling device for a power distribution board, characterized in that a wind guide is provided so that the air from each of the fans is blown into the other adjacent power distribution board through a ventilation hole.