JP2004356274A - Air conditioner for board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide air conditioners for boards having different cooling capacities without preparing radiators of various kinds. <P>SOLUTION: In the air conditioner for the board, the radiator 3 for a heat absorption and the radiator 4 for a heat dissipation are formed of radiator units 5. Accordingly, the air conditioners for the boards capable of corresponding to self-standing type cabinets for housing electrical equipment having various sizes can be provided because the various radiators 3 for the heat absorption and radiators 4 for the heat dissipation having the different cooling capacities can be manufactured by combining a plurality of the radiator units 5 in standards of one kinds. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a panel cooler for suppressing an increase in temperature inside a cabinet due to heat generation of electric and electronic devices inside a distribution board, a distribution board, a communication board, and the like.
[0002]
[Prior art]
Cabinets used for distribution boards, switchboards, communication boards, etc. are of various sizes depending on the size and number of electrical and electronic equipment installed inside. The panel cooler required a cooling capacity corresponding to the size of the cabinet, and was equipped with a radiator of a dedicated size corresponding to the cooling capacity. (See Patent Document 1)
[0003]
[Patent Document 1]
JP-A-5-343750 (FIG. 9)
[0004]
[Problems to be solved by the invention]
However, in order to prepare radiators of different sizes for different coolers for panels with different cooling capacities, the production cost cannot be reduced due to the mass production effect because a small number of products are manufactured. In the manufacturing stage, it is necessary to keep inventory of various types of radiators, and therefore, there is a problem that the manufacturing cost of the panel cooler increases.
[0005]
[Means for Solving the Problems]
The invention according to claim 1, wherein a cooler for a panel made to solve the above problem is formed by combining a plurality of radiator units with a radiator that absorbs or radiates heat by circulating a cooling medium. In the present invention, the radiator unit is arranged horizontally and stacked up and down to form a radiator by combining a plurality of radiators, and in the invention according to claim 1, the radiator unit is vertically installed. The radiator is formed by laminating a plurality of layers and combining a plurality of them to form a radiator.
[0006]
The panel cooler of the present invention has a radiator that absorbs or dissipates heat by using a radiator unit. Therefore, by combining a plurality of radiator units of one type, various radiators having different cooling capacities can be manufactured. Therefore, it is possible to provide a cooler for a panel having a cooling capacity capable of accommodating cabinets of various sizes.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
A preferred embodiment of the present invention will be described with reference to the drawings.
[First Embodiment]
First, a first embodiment will be described with reference to a panel cooler attached to a side surface of a free-standing cabinet such as a distribution board, a switchboard, or a communication board shown in FIGS. 1 is a perspective view showing the front cover with the front cover removed, FIG. 2 is a front view showing the front cover with the front cover removed, FIG. 3 is a partial cross-sectional view taken along line AA of FIG. 2, FIG. 5 is a front view of another specific example with the front cover removed, FIG. 6 is a perspective view and a plan view of a radiator unit, FIG. 7 is a perspective view of a cooling unit using a Peltier element, and FIG. FIG. 2 is a perspective view showing a state where the cabinet is attached to a side surface of the cabinet 100.
[0008]
Reference numeral 1 denotes a box cooler box whose entire front side can be freely opened and closed by a front cover 11, and the box 1 is directed from the front side to the rear side 12 which is the mounting surface side to the side of the cabinet of the board from the front and center. The upper part is formed by the partition board 2 inclined downward, and the upper part is formed as the inside air ventilation path 22 and the lower part is formed as the external air ventilation path 23. As shown in FIG. 3, the internal air intake 22a of the internal air ventilation passage 22 and the external air intake 23a of the external air ventilation passage 23 face the rear side and the front side with the partition plate 2 as a boundary. In addition to the heat exchange by a radiator, which will be described later, hot air from the inside of the panel and cold air from the outside come into contact via the partition plate 2 to perform heat exchange.
[0009]
That is, the air passage 22 in the panel is formed at the upper part of the box 1 with an internal air inlet 22a provided on the lower rear side and an internal air return port 22b provided on the upper rear side. A radiator 3 on the heat absorption side that circulates a cooling medium and absorbs heat so as to close the air passage 22 in the panel between the air return port 22b and the air return port 22b is provided to remove hot air from the inside of the panel through the internal air inlet 22a. It is taken in, brought into contact with the fins of the radiator 3, cooled, and returned to the inside of the panel again from the internal air return port 22b to suppress a rise in the temperature inside the panel. A fan 31a for suction is disposed above the radiator 3, and a fan 31b for blowing is disposed below the radiator 3 in parallel with the radiator 3 to take in and return air inside the panel as described above. When the ventilation of the radiator 3 is good, only one fan may be used. In addition, if the wind direction adjusting plate 22c which is inclined upward toward the rear side is provided at the upper front corner of the in-panel air ventilation path 22, the flow of the cooling air into the panel becomes smooth, and the adjusting plate 22c The power supply / control unit can be installed in the space 24 formed at the uppermost part of the box 1 after being partitioned.
[0010]
Further, the external air passage 23 is provided such that the partition plate 2 serves as a downward air guiding portion with the external air inlet 23a facing the internal air inlet 22a in the front cover 11, and the side plates 13 and 13 are provided. Are formed below the box 1 with external air outlets 23b, 23b provided below. A radiator 4 on the heat radiation side that circulates a cooling medium and radiates heat is provided in the external air ventilation passage 23 continuously from the external air inlet 23 a, and a blowing fan 41 a is disposed above the radiator 4. The fan 41b for suction is installed and arranged.
[0011]
The radiators 3 and 4 are each formed by combining a plurality of plate-shaped radiator units 5 each having a fin 5b attached to a tube 5a as shown in FIG. 6, and only by increasing or decreasing the number of the radiator units 5. A radiator according to the required cooling capacity can be obtained. In this embodiment, the radiator 3 on the heat absorption side has two radiator units 5 and the radiator 4 on the heat radiation side has three radiator units 5 placed side by side and stacked in the height direction. The reason why the number of radiator units 5 of the radiator 4 on the heat radiation side is larger than that on the heat absorption side is that the cooling unit 6 uses a Peltier element 7 as described later in this embodiment. This is because the amount of heat generated due to the work of the device itself is generated on the heat radiating side, so that the capacity on the heat radiating side needs to be larger than that on the heat absorbing side.
[0012]
Numeral 6 denotes a cooling unit using a Peltier element 7. The cooling unit 6 has a heat-absorbing side heat sink 8a and a heat-radiating side heat sink 8b so that the heat absorbing surface of the Peltier element 7 is connected to the heat absorbing side heat sink 8a as shown in FIG. This is a laminated structure in which the heat radiation surface is sandwiched between the heat sink 8b and the heat radiation side heat sink 8b. Then, the heat radiation side heat sink 8b is disposed below the heat radiation side radiator 4 of the external air ventilation path 23 so as to face the heat radiation side radiator 4, thereby preventing the heat radiation of the radiator 4 from directly hitting the heat absorption side heat sink 8a. are doing. The heat absorbing side heat sink 8a and the heat radiating side heat sink 8b of the cooling section 6 have a liquid cooling structure provided with a cooling liquid passage through which a cooling liquid as a cooling medium passes.
[0013]
The heat absorbing side heat sink 8a is connected to the heat absorbing side radiator 3 via a piping (not shown) via a heat absorbing side pump 9a and a heat absorbing tank 10a. Then, the cooling liquid cooled by the Peltier element 7 is sent to the radiator 3 on the heat absorbing side to cool the radiator 3, and the heat is absorbed by the heat absorbing fans 31a, 31b from the air inlet 22a into the air flow passage 22 in the board. The air is brought into contact with the cooled radiator 3 to cool it, and then returned to the inside of the panel from the air return port 22b.
[0014]
The radiating heat sink 8b is connected to the radiator 4 on the radiating side via a radiator 4 on the radiating side via a radiating pump 9b and a radiating tank 10b via a piping (not shown), and a cooling liquid that captures heat generated by the radiating surface of the Peltier element 7 is provided. It is sent to the radiator 4 on the heat radiating side, and the outside air taken in from the outside air inlet 23a by the heat radiating fans 41a and 41b is brought into contact with the radiator 4 so that heat is taken into the outside air and provided below the side plates 13 and 13 of the box 1. The air is discharged from the outside air outlets 23b, 23b.
[0015]
Further, the heat absorption side pump 9a and the heat radiation side pump 9b are arranged at the lower end of the cabinet 1 facing the outside air discharge port 23b of the radiator on the heat radiation side of the external air ventilation path 23, that is, the outside air discharge ports 23b, 23b. The heat generated by the motor is not contained in the box 1. Further, since the heat absorption side tank 10a and the heat radiation side tank 10b are arranged at the upper end of the box 1, which is the uppermost part of the piping system, even if the operation of the pump is stopped, the radiator and the coolant in the piping flow into the tank. Since there is no squeezing, the capacity of the tank may be small, so that there is an advantage that the whole of the cooler for the partition can be downsized. Further, the replenishment of the cooling liquid can be easily performed by opening and closing the lid 10c of the heat absorption side tank 10a and the heat radiation side tank 10b projecting from the upper part of the box 1. Further, if the lowermost end of the piping system is protruded from the bottom surface of the box 1 and the drain cocks 91 and 91 are provided, the work of draining the coolant during maintenance is easy and the inside of the box 1 is not contaminated. It is.
[0016]
Further, in the illustrated one, the heat absorbing side tank 10a and the heat radiating side tank 10b are arranged along the inside of the side plate 13 and a viewing window 13a is provided in the side plate 13 to facilitate the management of the liquid amount in the tank. Then, as shown in FIG. 2, the space on the side surface below the heat absorption side tank 10a and the heat radiation side tank 10b is separated by a vertical partitioning plate 21 indicated by a dashed line to form a piping space. In addition, it does not affect the electrical components and other parts even if there is liquid leakage from the tank, piping, etc., and can minimize damage due to liquid leakage. is there.
[0017]
As shown in FIG. 8, such a panel cooler of the present invention is mounted on a side surface of a cabinet 100 of a stand-alone type distribution board, distribution board, communication board, or the like, and is a cabinet that generates heat from internal electric and electronic devices. It is the same as a conventional panel cooler that suppresses a rise in the temperature inside. A feature of the cooler for a panel according to the present invention is that the radiator 3 on the heat absorption side and the radiator 4 on the heat radiation side are formed by the radiator unit 5. Thus, various types of radiators having different capacities can be manufactured by combining the radiator 3 on the heat absorption side and the radiator 4 on the heat radiation side with a plurality of radiator units 5 of a single type. It is possible to provide a cooler for a panel that can be adapted to the cabinet of the above.
[0018]
In this embodiment, the radiator unit 5 is placed sideways and stacked in the height direction to form the radiator 3 on the heat absorbing side and the radiator 4 on the heat radiating side. Changing the size of the box 1 by increasing or decreasing the number of radiator units 5 of the radiators 3 and 4 is performed by changing the size in the height direction. For example, as shown in FIG. 5, the radiator 3 on the heat absorbing side has one radiator unit 5 and the radiator 4 on the heat radiating side has two radiator units 5 as compared to those shown in FIGS. The size in the vertical direction can be reduced. Therefore, when the self-standing electric appliance storage cabinet 100 to be cooled is to reduce the installation area and change the size in the height direction to change the equipment storage capacity, a large cooling power is required. Since the cabinet to be cooled is high and the cabinet which needs only a small cooling power may be low, the cooler for the panel corresponding to the required cooling capacity of the cabinet can be accurately mounted on the side of the cabinet 100 and installed. .
[0019]
Further, the cooling unit 6 is a laminate in which the Peltier element 7 is sandwiched between the heat sink 8a and the heat sink 8b so that the heat absorbing surface of the Peltier element 7 is in contact with the heat sink 8a and the heat sink is in contact with the heat sink 8b. With this configuration, the cooling capacity of the cooling unit 6 can be changed by increasing or decreasing the number of laminations of the Peltier element 7, the heat sink 8a, and the heat sink 8b. The size of the box 1 can be changed by increasing or decreasing the size by changing the size of the box in the height direction.
[0020]
[Second embodiment]
Next, a panel cooler according to a second embodiment will be described with reference to FIGS. 9 is a transverse sectional view, FIG. 10 is a perspective view showing the front cover with the front cover removed, FIG. 11 is a perspective view showing the front cover with the front cover removed, FIG. 12 is a vertical sectional view, and FIG. FIG. 14 is a side view showing a state where a side plate is removed, and FIG. 15 is a perspective view showing a state where the cabinet is used by attaching to a side surface of a cabinet 100 for storing a self-standing electric device.
[0021]
Reference numeral 1 denotes a box cooler box, and swash plate portions 2b, 2b, which are air-conditioning plates that are expanded toward the rear side, are provided on both sides of the rear surface 12 side, which is the mounting surface side of the box 1 to the panel. The vertical partition plate 2a and the upper partition plate 17 and the lower partition plate 18 sandwiching the vertical partition plate 2a form an in-panel air ventilation passage 22 having a trapezoidal cross section, and an inner air intake port 22a and an internal air return port 22b on the back surface 12 in the lateral direction. It is provided and formed. The radiator 3 on the heat absorbing side is arranged in the air passage 22 in the panel so as to close the air passage 22 in the panel, and cools the hot air taken in from the internal air inlet 22a. The internal air return port 22b is returned to the inside of the panel by the fan 3a provided in the internal air return port 22b to suppress a rise in the temperature inside the panel.
[0022]
Outside the inside air passage 22 of the box 1, an outside air passage 23 outside the board is provided on one side plate 13 of the box 1, and an outside air outlet 23 b is provided between the other side plate 13 and the front cover 11. It is formed by providing outside air intakes 23a, 23a. The radiator 4 on the heat radiation side is provided in the outside air passage 23. The radiator 4 on the heat radiation side is installed so as to face the exhaust fan 4a attached to the outside air outlet 23b provided on one side plate portion 13 of the box 1 forming the outside air ventilation passage 23, and the other side. The outside air taken in from outside air intakes 23a, 23a provided in the side plate portion 13 and the front cover 11 is brought into contact with the radiator 4 so that the outside air takes in heat and is discharged from the outside air outside outlet 23b. .
[0023]
Further, the radiators 3 and 4 are each formed by a plate-shaped radiator unit 5, and a radiator corresponding to a required cooling capacity can be obtained simply by increasing or decreasing the number of the radiator units 5. In this embodiment, the radiator 3 on the heat absorption side is vertically stacked with two radiator units 5 placed vertically, and the radiator 3 on the heat radiation side is vertically placed with two radiator units 5 placed vertically. In this example, two layers are provided side by side in the horizontal direction. The reason why the number of the radiator units 5 of the radiator 4 on the heat radiation side is larger than that on the heat absorption side is that the Peltier element is used for the cooling unit as described later in this embodiment. This is because the capacity of the side needs to be larger than that of the endothermic side.
[0024]
Further, the cooling section 6 using the Peltier element 7 is attached to the center of the above-mentioned vertical partition plate 2a and disposed in the outside air ventilation passage 23. The cooling unit 6 has the Peltier element 7 with the heat absorbing side heat sink 8a and the heat radiating side heat sink 8b so that the heat absorbing surface of the Peltier element 7 is in contact with the heat absorbing side heat sink 8a and the heat radiating surface is in contact with the heat releasing side heat sink 8b. Are sandwiched in the lateral direction so as to face the vertical partition plate 2a. The heat sink 8a and the heat sink 8b of the cooling unit 6 have a liquid cooling structure provided with a cooling liquid passage.
[0025]
A heat-absorbing pump 9a and a heat-dissipating pump 9b are located below the radiator 4 on the heat-dissipating side at the bottom of the box 1 below the outside air flow passage 23. The heat radiating tank 10b is provided with appropriate heat insulating means. The heat-absorbing heat sink 8a is connected to the heat-absorbing radiator 3 via a heat-absorbing pump 9a and a heat-absorbing tank 10a by a piping (not shown), and the cooling liquid cooled by the Peltier element 7 is supplied to the heat-absorbing radiator. 3, the radiator 3 is cooled, the air in the panel taken in from the air inlet 22a into the panel air ventilation path 22 by the heat absorbing fan 3a is brought into contact with the cooled radiator 3 and cooled, and the air return port is provided. From 22b, it is returned to the board.
[0026]
The radiating heat sink 8b is connected to the radiator 3 on the heat absorbing side via a radiator 3 on the heat absorbing side via a heat radiating pump 9b and a heat absorbing tank 10b through a piping (not shown), and absorbs the heat generated by the heat radiating surface of the Peltier element 7. It is sent to the radiator 4 on the heat radiating side, and the outside air taken in from the outside air intakes 23a, 23a is brought into contact with the radiator 4 by the heat radiating fan 4a, heat is taken into the outside air, and the outside air outlet provided on the side plate 13 of the box 1 is provided. 23b.
[0027]
Such a panel cooler of the present invention is mounted on the side of a cabinet 100 such as a self-contained distribution board, distribution board, communication board or the like as shown in FIG. It is the same as a conventional panel cooler that suppresses a rise in the temperature inside. A feature of the cooler for a panel according to the present invention is that the radiator 3 on the heat absorption side and the radiator 4 on the heat radiation side are formed by the radiator unit 5. Thus, various types of radiators having different capacities can be manufactured by combining a plurality of one type of heat exchange unit 5 with the radiator 3 on the heat absorption side and the radiator 4 on the heat radiation side. It is possible to provide a cooler for a panel that can be adapted to the cabinet of the above.
[0028]
In this embodiment, the heat exchange units 5 are vertically arranged and stacked in the height direction to form the radiator 3 on the heat absorbing side and the radiator 4 on the heat radiating side. Changing the size of the box 1 by increasing or decreasing the number of radiator units 5 of the radiators 3 and 4 is performed by changing the size in the height direction. In this case, the cooling cabinet 100 for self-contained electric equipment to be cooled also requires a large cooling power when the equipment storage capacity is changed by changing the size in the height direction in order to reduce the installation area. Since the cabinet to be used is high in height and the cabinet that requires only a small cooling power may be low in height, a cooler for a panel corresponding to the required cooling capacity of the cabinet can be accurately mounted on the side of the cabinet 100 and installed. is there.
[0029]
Further, in this embodiment, the air ventilation passage 22 in the panel is formed by the vertical partition plate 2a and the upper partition plate 17 and the lower partition plate 18 sandwiching the vertical partition plate 2a on the rear surface 12 side which is the mounting surface side of the box 1 to the panel. An internal air inlet 22a and an internal air return port 22b are provided in the back surface 12 as a trapezoidal cross section in the lateral direction, and an external air vent 23 is formed outside the internal air vent 22 in the panel. Therefore, the hot air from the inside of the panel and the cold air from the outside come into contact via the vertical partition plate 2a to perform heat exchange to cool the air in the panel. And, since the cross section is trapezoidal, the inner side surfaces of the swash plate portions 2b, 2b, which are the air conditioning plates on both sides thereof, can adjust the wind direction of the air in the panel and efficiently circulate the air with the panel. Also, since the outer surfaces of the swash plate portions 2b, 2b on both sides face the outside air outlet 23b provided on one side plate 13 of the box 1 and the outside air inlet 23a provided on the other side plate 13, Intake and discharge of outside air are smooth.
[0030]
【The invention's effect】
As described above, since the radiator is formed by combining a plurality of radiator units in the cooler for a panel according to the present invention, various types of radiators having different capacities can be prepared by preparing a radiator unit of one type. Since it can be manufactured, it is possible to provide a cooling capacity capable of accommodating various sizes of free-standing cabinets for storing electric and electronic equipment.
Therefore, the present invention has solved the problems of the conventional panel cooler, and has a great advantage to the industry.
[Brief description of the drawings]
FIG. 1 is a perspective view showing the first embodiment from the front side with a front cover removed.
FIG. 2 is a front view showing the first embodiment with a front cover removed.
FIG. 3 is a partial sectional view taken along line AA of FIG. 2;
FIG. 4 is a perspective view showing the first embodiment as viewed from the rear side.
FIG. 5 is a front view showing another specific example with a front cover removed.
6A and 6B are diagrams showing a radiator unit, wherein FIG. 6A is a perspective view and FIG. 6B is a plan view.
FIG. 7 is a perspective view showing a cooling unit using a Peltier element.
FIG. 8 is a perspective view showing a state of attachment to a self-contained cabinet for storing electric and electronic equipment.
FIG. 9 is a cross-sectional view showing a second embodiment.
FIG. 10 is a perspective view showing the second embodiment from the front side with a front cover removed.
FIG. 11 is a perspective view showing the second embodiment with the front cover removed from the back side.
FIG. 12 is a longitudinal sectional view showing a second embodiment.
FIG. 13 is a front view showing the second embodiment with a front cover removed.
FIG. 14 is a side view showing the second embodiment with a side plate removed.
FIG. 15 is a perspective view showing a state of attachment to a cabinet for storing a self-contained electric and electronic device.
[Explanation of symbols]
3 Radiator for heat absorption 4 Radiator for heat radiation 5 Radiator unit

Claims (3)

A cooler for a panel, wherein a radiator for absorbing or radiating heat by circulating a cooling medium is formed by combining a plurality of radiator units. The panel cooler according to claim 1, wherein a radiator is formed by arranging the radiator units horizontally and vertically stacking the radiator units. 2. The cooler for a panel according to claim 1, wherein the radiator unit is vertically arranged and vertically stacked to form a radiator.

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