JP4401106B2 - Panel cooler - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a panel cooler for suppressing an increase in temperature in a cabinet due to heat generated by electrical and electronic devices such as a distribution board, a distribution board, and a communication board. This is related to the improvement of the panel cooler that performs heat absorption and heat dissipation.
[0002]
[Prior art]
In the panel cooler that circulates the cooling liquid and absorbs and dissipates heat, a tank for filling the cooling liquid circulation path on the heat absorption side and the heat radiation side is disposed below the cooler. (Patent Document 1)
[0003]
[Patent Document 1]
Japanese Utility Model Publication 3-43739 (drawing)
[0004]
[Problems to be solved by the invention]
However, since the tank is disposed below the cooler, the coolant in the coolant circulation path such as the radiator and the pipe returns to the tank when the pump is turned off. Therefore, the tank needs to have a large capacity for the amount of coolant to be filled in the coolant circulation path in addition to the reserve amount, and there is a problem that the external dimensions of the cooler are increased accordingly.
[0005]
[Means for Solving the Problems]
Board cooler was made in order to solve the above problems is the board for cooler by circulating coolant heat absorption side of the radiator and the heat radiating side of the radiator absorbs the heat and the heat radiation, heat absorption side coolant with a pump circulation A coolant supply tank of a heat radiation side provided with a path and a pump is provided at the uppermost part of each coolant circulation path, and a tank for storing a coolant is arranged in the vicinity of the liquid supply port. is there.
[0006]
The panel cooler according to the present invention includes a liquid supply port for the heat absorption side coolant circulation path and a heat radiation side coolant circulation path at the top of each coolant circulation path, and a tank for storing a coolant near the liquid supply port. Even if the liquid supply port is opened when the pump is off, the cooling liquid stops in the heat absorption side cooling liquid circulation path and the heat radiation side cooling liquid circulation path and is in the vicinity of the liquid supply port. Since the tank does not flow into the coolant storage tank placed in the tank, the tank can be made the minimum size with the capacity to replenish the coolant that decreases with long-term use, and the external dimensions of the cooler can be reduced. It can be done.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
A preferred embodiment of the present invention will be described with a panel cooler attached to the side of the panel shown in FIGS.
1 is a side view showing the side plate removed, FIG. 2 is a perspective view showing the front cover with the front cover removed, FIG. 3 is a front view showing the front cover removed, and FIG. 4 is a perspective view showing the rear view. 5 is a perspective view showing a cooling unit, and FIG. 6 is a perspective view showing a radiator unit.
[0008]
1 is a box cooler box whose front side can be opened and closed freely by a front cover 11. The box 1 is located in the center of the top and bottom from the front side toward the back side 12 which is the mounting surface side to the side of the panel 100. The partition plate 2 inclined downwardly forms an upper air ventilation path 22 in the upper part and an outer air ventilation path 23 in the lower part. Further, a heat absorption side radiator 3 is disposed in the internal air ventilation path 22 and a heat radiation side radiator 4 is disposed in the external air ventilation path 23. Both radiators 3 and 4 circulate a cooling liquid to absorb heat and release heat. Is going.
[0009]
The circulation of the cooling liquid is performed in the endothermic radiator 3 by connecting the inlet of the endothermic radiator 3 and the endothermic outlet of the cooling section 6 with a pipe 31 and removing the end of the endothermic side of the cooling section 6. The inlet and the discharge port of the endothermic pump 5a are connected by a pipe 32, the inlet of the endothermic pump 5a and the outlet of the endothermic radiator 3 are connected by a pipe 33, and the endothermic coolant circulation path ( A) is formed, and the coolant is circulated through the pump 5a, the cooling unit 6, the radiator 3 and the pump 5a again through the pipes.
[0010]
Further, in the radiator 4 on the heat dissipation side, the intake of the radiator 4 on the heat dissipation side and the discharge outlet on the heat dissipation side of the cooling unit 6 are connected by a pipe 41, and the intake on the heat dissipation side and the heat dissipation side of the cooling unit 6 are connected. The discharge port of the pump 5b is connected by a pipe 42, and the suction port of the heat dissipation side pump 5b and the discharge port of the heat dissipation side radiator 4 are connected by a pipe 43 to form a heat dissipation side coolant circulation path (B). The coolant is circulated through the pipe 5b, the cooling unit 6, the radiator 4, and the pump 5b through the pipes.
[0011]
In this embodiment, the cooling unit 6 includes a Peltier element 6c, a heat-absorbing side heat sink 6a provided with a cooling liquid path, and a heat-dissipating side heat sink 6b as shown in FIG. The heat absorption side heat sinks 6a and the heat radiation side heat sinks 6b are connected to each other by pipes so that the heat absorption surface is sandwiched between the heat absorption side heat sinks 6a and the heat radiation surfaces are in contact with the heat radiation side heat sinks 6b. One cooling liquid intake and one discharge outlet are formed to form the heat absorption side and the heat radiation side of the cooling unit 6.
[0012]
Then, the cooling liquid cooled by the Peltier element 6c is sent to the radiator 3 on the heat absorption side, the radiator 3 is cooled, and the air in the panel taken into the panel air ventilation path 22 from the air intake port 22a by the heat absorption fan 3a. The cooled radiator 3 is contacted and cooled, and then returned from the air return port 22b to the inside of the panel, and the cooling liquid taking in the heat generated by the heat radiation surface of the Peltier element 6c is sent to the radiator 4 on the heat radiation side, and the heat radiation fan The outside air taken in from the outside air inlet 23a is brought into contact with the radiator 4 by 4a, heat is taken into this outside air, and discharged from the outside air outlets 23b, 23b provided below the side plates 13, 13 of the box 1. is there.
[0013]
The heat absorption side cooling liquid circulation path (A) and the heat radiation side cooling liquid circulation path (B) are provided with liquid supply ports 7a and 7b, respectively, for filling the coolant at the top, and in the vicinity of the liquid supply ports 7a and 7b. Are provided with tanks 8a and 8b for storing coolant. That is, in the endothermic coolant circulation path (A), the pipe 33 connecting the inlet of the endothermic pump 5a and the outlet of the endothermic radiator 3 is routed to reach the upper part of the box 1 and becomes the top. And the upper end of the tank 8a is projected from the top plate 14 of the box 1 and is opened and closed by a lid 9a. As the liquid supply port 7a is formed, the pipe 33a separated on the heat absorption side radiator 3 side is connected to the side surface of the tank 8a, and the pipe 33b separated on the heat absorption side pump 5a side is connected to the bottom surface of the tank 8a. .
[0014]
The heat-dissipating-side coolant circulation path (B) is routed so that the pipe 43 connecting the suction port of the heat-dissipating pump 5b and the discharge port of the heat-dissipating radiator 4 reaches the top of the box 1 and separates the top portion. In the meantime, a cooling liquid storage tank 8b with a liquid supply port 7b is interposed therebetween, so that the upper end of the tank 8b extends from the top plate 14 of the box 1 and is opened and closed by the lid 9b at the upper end. As the formation of the opening 7b, the pipe 43a separated on the radiator 4 side on the heat radiation side is connected to the side surface of the tank 8b, and the pipe 43b separated on the heat pump 5b side is connected to the bottom surface of the tank 8b. In FIG. 1, the drawn state of each pipe is abbreviated as a thick one-dot chain line on the heat absorption side and a thick solid line on the heat dissipation side.
[0015]
Further, the tanks 8 a and 8 b on the heat absorbing side and the heat radiating side are installed so as to follow the inner surface of the side plate portion 13, and the liquid amount can be managed from the viewing window 13 a provided on the side plate portion 13. In this case, it is a matter of course that a means for visually checking the amount of liquid in the tanks 8a and 8b is provided, such as making the tanks 8a and 8b transparent or providing a transparent window hole. Further, since the heat absorption side pump 5a and the heat radiation side pump 5b are arranged at the bottom of the box 1, there is an advantage that an inexpensive non-self-contained pump can be used.
[0016]
The internal air ventilation path 22 is provided with an internal air intake port 22a below the back side and an internal air return port 22b above the back side. The internal air intake port 22a and the internal air return port 22b are provided. The radiator 3 on the heat absorption side is arranged so as to close the air ventilation path 22 in the panel, and the fan 3a installed facing the upper and lower sides of the radiator 3 allows hot air from the panel to be taken into the internal air inlet 22a. It is further taken in and cooled by the radiator 3 and then returned to the inside of the board from the upper internal air return port 22b to suppress the temperature rise in the board. In addition, a wind direction adjusting plate 22c that is inclined upward toward the rear side is provided at the upper front corner of the air ventilation path 22 in the panel so that the cooling air can flow smoothly into the panel. A power supply / control unit is installed in a space 24 that is partitioned by the adjustment plate 22c and formed at the top of the box 1.
[0017]
In addition, the external air ventilation path 23 is provided so that the partition plate 2 serves as a downward air guide portion so that the external air intake port 23a faces the internal air intake port 22a on the front cover 11, and the side plate 13, The external air discharge ports 23b and 23b are provided below 13 and formed below the box 1. The radiator 4 on the heat radiation side is disposed in the external air passage 23 so as to face the external air inlet 23a.
[0018]
Each of the radiators 3 and 4 is formed by combining a plurality of plate-shaped radiator units 10 shown in FIG. 6 according to the cooling capacity required only by increasing or decreasing the number of radiator units 10. It can be. In this embodiment, the radiator 3 on the heat absorption side has two radiator units 10, and the radiator 3 on the heat radiation side has three radiator units 10 placed horizontally and stacked in the height direction. In this embodiment, the number of radiator units 10 of the radiator 4 on the heat radiation side is larger than that on the heat absorption side. In this embodiment, since the Peltier element 6c is used for the cooling unit 6 as described above, the ability on the heat radiation side is greater than that on the heat absorption side. Because it needs to be large.
[0019]
Such a panel cooler according to the present invention is attached to the side of a cabinet of a stand-alone distribution board, switchboard, communication panel, etc., and suppresses an increase in temperature in the cabinet due to heat generated by internal electrical and electronic equipment. It is the same as the conventional panel cooler. The feature of the panel cooler of the present invention is that the liquid supply ports 7a and 7b of the heat absorption side coolant circulation path (A) and the heat dissipation side coolant circulation path (B) are connected to the coolant circulation paths (A), (B ) And tanks 8a and 8b for storing coolant are disposed in the vicinity of the liquid supply ports 7a and 7b. Thereby, when the pumps 5a and 5b are turned off, the coolant filled in the coolant circulation path stops in the heat absorption side coolant circulation path (A) and the heat dissipation side coolant circulation path (B), and the liquid supply Since the tank does not flow back into the coolant storage tanks 8a and 8b arranged in the vicinity of the ports 7a and 7b, the tank should have a minimum size with a capacity for replenishing the coolant that decreases with long-term use. It is possible to reduce the external dimensions of the cooler.
[0020]
Further, since the liquid supply ports 7a and 7b are at the uppermost portions of the heat absorption side coolant circulation path (A) and the heat radiation side coolant circulation path (B), the liquid supply ports 7a are also provided even when the pumps 5a and 5b are turned on. , 7b can be opened to replenish the coolant, so that it is not necessary to stop the operation of the cooler, so the coolant can be replenished frequently and the capacity of the tank can be made smaller. Further, assuming that the upper ends of the tanks 8a and 8b are extended from the top plate 14 of the box 1 and the liquid supply ports 7a and 7b that are opened and closed by the lids 9a and 9b are formed at the upper ends, the heat absorption side coolant circulation path ( A) and the heat radiation side coolant circulation path (B) are provided at the uppermost part, so that it is not necessary to remove the side plate portion 13 and the top plate 14 of the box 1 when replenishing the coolant. It will be easy.
[0021]
【The invention's effect】
As described above, the panel cooler according to the present invention is provided with the liquid supply ports of the heat absorption side cooling liquid circulation path and the heat radiation side cooling liquid circulation path at the top of each cooling liquid circulation path and in the vicinity of the liquid supply port. Since the tank for storing the coolant is disposed in the tank, the capacity of the tank can be minimized, and the external dimensions of the cooler can be reduced.
Therefore, the present invention eliminates the problems of the conventional panel cooler and is a significant benefit for the industry.
[Brief description of the drawings]
FIG. 1 is a side view showing an embodiment of the present invention.
FIG. 2 is a perspective view from the front side with the front cover removed.
FIG. 3 is a front view showing the front cover removed.
FIG. 4 is a perspective view shown from the back side.
FIG. 5 is a perspective view showing a cooling unit.
FIG. 6 is a perspective view showing a radiator unit.
[Explanation of symbols]
3 Radiator on heat absorption side 4 Radiator on heat dissipation side
7a Supply port
7b Supply port
8a tank
8b tank
(A) Heat absorption side coolant circulation path
(B) Heat dissipation side coolant circulation path

Claims (1)

In a panel cooler that performs heat absorption and heat dissipation by circulating cooling liquid to the heat absorption side radiator and the heat radiation side radiator, the liquid supply of the heat absorption side cooling liquid circulation path with the pump and the heat radiation side cooling liquid circulation path with the pump A panel cooler characterized in that a port is provided at the uppermost part of each coolant circulation path and a tank for storing coolant is arranged in the vicinity of the liquid supply port.

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