JP5372572B2 - Electronic equipment cooling device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic apparatus cooling device in which cost in operation is reduced. <P>SOLUTION: The electronic apparatus cooling device includes a cabinet 12 which is installed in outdoor and accommodates an electronic apparatus 11, and an evaporator 36 which is provided in the cabinet 12. When the outdoor temperature is high, a control part cools the electronic apparatus 11 by an evaporator 36, and when the outdoor temperature is low, it cools the electronic apparatus 11 by the outside air. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to an electronic device cooling apparatus for cooling an electronic device.

Conventionally, an air-water heat exchanger is arranged on the air outlet side of a cabinet in which electronic equipment is housed, and the air blown by a fan attached to the electronic equipment housed in the cabinet is cooled by the air-water heat exchanger. There is known an electronic device cooling apparatus that returns the air to the room (for example, see Patent Document 1).
US Patent Application Publication No. 2006/0232945

In the above-described electronic device cooling apparatus, there is a need to reduce the cost for the operation of the electronic apparatus cooling device.
The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide an electronic device cooling apparatus that reduces the cost of operation.

In order to achieve the above object, the present invention provides a cabinet that is installed outside and stores an electronic device, an evaporator provided in the cabinet, and the electronic device by the evaporator when the outdoor temperature is high. When the outdoor temperature is low, the electronic device is cooled by the outside air, and the outside air introduction means for introducing the outside air into the cabinet, the cooling means when the outdoor temperature is low , by introducing outside air to cool the electronic equipment in the cabinet by the outside air introduction means, and Lud Shikanto dehumidifier to dehumidify the air introduced into the cabinet by the external air introduction means, the exhaust heat of the electronic apparatus And a desiccant regeneration means for regenerating the desiccant of the desiccant dehumidifier using the desiccant dehumidifier, wherein the desiccant dehumidifier is a desiccant rotor. The desiccant regeneration means, characterized by reproducing the desiccant regeneration side of the said desiccant rotor by utilizing the exhaust heat of the electronic device.
According to this configuration, when the outdoor temperature is low, the electronic device can be cooled by the outside air without causing the evaporator to function, and the cost for operation can be reduced.
According to this configuration, the electronic device can be suitably cooled by the outside air by introducing the outside air by the outside air introducing unit.
According to this configuration, it is possible to prevent the outside air from being dried by the dehumidifying means and the moisture contained in the outside air from adversely affecting the electronic device. In addition, since moisture hardly condenses in the evaporator, the input to the evaporator for cooling the outside air can be reduced when the evaporator functions.
According to this configuration, the desiccant (desiccant) of the desiccant dehumidifier can be suitably regenerated using the exhaust heat of the electronic device.
According to this configuration, it is possible to suitably regenerate the desiccant on the regeneration side of the desiccant rotor using the exhaust heat of the electronic device.

In order to achieve the above object, the present invention provides a cabinet that is installed outside and stores an electronic device, an evaporator provided in the cabinet, and when the outdoor temperature is high, When the electronic device is cooled and the outdoor temperature is low, the electronic device has a cooling means for cooling the electronic device with outside air, a heat absorbing part extending into the cabinet, and a heat radiating part formed above the heat absorbing part. e Bei and the heat pipe, wherein the cooling means, when the outdoor temperature is low, the absorbed heat in the cabinet by the heat absorbing portion, the heat absorbing portion of the heat radiating portion is cooled by the outside air has absorbed heat cooling said electronic device by dissipating, characterized.
According to this configuration, when the outdoor temperature is low, the electronic device can be cooled using the heat pipe without causing the evaporator to function, and the cost for operation can be reduced.

Moreover, in the electronic device cooling apparatus of the above invention, a heat insulating material may be arranged on the wall portion of the cabinet.
According to this configuration, it is possible to prevent the temperature of the outside air from adversely affecting the inside of the cabinet.

The electronic device cooling apparatus of the present invention further includes an outdoor temperature detection means for detecting an outdoor temperature, and when the outdoor temperature detected by the outdoor temperature detection means is lower than a predetermined threshold, the outdoor temperature is You may make it discriminate | determine that it is low.
According to this configuration, it is possible to reliably detect that the temperature of the outside air is low enough to cool the electronic device based on the temperature of the outside air detected by the outside air temperature detecting means.

In the electronic device cooling apparatus according to the invention, the predetermined threshold value may be determined based on a target temperature in the cabinet for cooling the electronic device.
According to this configuration, the predetermined threshold value can be reliably set to the outside air temperature at which the inside of the cabinet becomes the target temperature.

  ADVANTAGE OF THE INVENTION According to this invention, the cost concerning the driving | operation of an electronic device cooling device can be reduced.

Embodiments of the present invention will be described below with reference to the drawings.
<First Embodiment>
FIG. 1 is a perspective view of an electronic apparatus cooling apparatus 1A according to the present embodiment, and FIGS. 2 and 3 are cross-sectional views of the electronic apparatus cooling apparatus 1A. 2 shows the electronic device cooling apparatus 1A during a low temperature operation and a high temperature operation described later, and FIG. 3 shows the electronic device cooling apparatus 1A during a desiccant regeneration operation described later.
The electronic device cooling device 1 </ b> A is a device that stores an electronic device 11 such as a server or a network device in a cabinet 12 and cools the stored electronic device 11.

  As shown in FIGS. 1, 2, and 3, the electronic device cooling apparatus 1 </ b> A includes a box-shaped cabinet 12 for housing the electronic device 11 to be cooled. The cabinet 12 is installed outdoors, and in the electronic device cooling apparatus 1A according to the present embodiment, as described later, when the outdoor air is lower than a predetermined threshold, the outdoor air is used as the cabinet 12. The stored electronic device 11 is cooled.

  The cabinet 12 has a size that conforms to the standard of the electronic device 11 to be stored, and includes an upper wall portion 12a that forms an upper surface, a left wall portion 12b that forms a left side surface when viewed from the front (FIG. 1), and a right side surface. A right wall portion 12c (FIG. 1) that forms the back surface, a back wall portion 12d (FIG. 2) that forms the back surface, and a lower wall portion 12e (FIG. 2) that forms the bottom surface. An opening 13 is formed on the front surface of the cabinet 12, and an internal space 14 for accommodating the electronic device 11 is formed in a space surrounded by the walls of the cabinet 12.

  In this internal space 14, shelves 15a, 15b, 15c, 15g are provided at intervals in the vertical direction. These shelf plates 15a, 15b, 15c and 15g are plate-like members extending horizontally in the internal space 14, and are supported by support portions (not shown) provided on the left wall portion 12b and the right wall portion 12c. ing. None of the shelf boards 15a, 15b, 15c, and 15g has air permeability.

On the shelf boards 15a and 15b, the electronic device 11 is placed. Since the electronic device 11 may become a high temperature exceeding 50 ° C. depending on the device, a heat insulating material (not shown) is interposed between the shelf boards 15 a and 15 b and the electronic device 11.
2 and 3, an air passage 16a through which air can flow is formed between the front end of the shelf 15a and the door 20, and similarly, the rear end of the shelf 15a and the back wall An air passage 16b through which air can flow is formed between the portion 12d. In the position where the shelf board 15a is arranged in the vertical direction, the air flows from the bottom to the top through the air passage 16a and the air passage 16b.
2 and 3, a cooling air opening 68 through which air can flow is formed between the rear end of the shelf board 15b and the back wall portion 12d. In the position where the shelf board 15 b is arranged in the vertical direction, the air flows from the bottom to the top through the cooling air opening 68.

An evaporator 36 is attached to the back surface of the shelf board 15c by a method such as screwing. As the evaporator 36, for example, a plate-shaped evaporator by a roll bond manufacturing method or a cross fin tube-shaped evaporator in which a tube is passed between fins arranged in parallel to each other is applied.
An opening 36a is formed at a position corresponding to the evaporator 36 in the shelf plate 15c. Air that passes through the evaporator 36 and is cooled by the evaporator 36 flows from the bottom to the top through the opening 36a.

The evaporator 36 is connected to the heat source unit 37. The heat source unit 37 includes a compressor 40, a condenser 41, an expansion valve 42, and a heat source machine fan 43. The compressor 40 is driven by a compressor motor (not shown) that is driven by electric power supplied from a commercial power source. Under the control of the control unit 50 described later, the compressor 40 compresses and discharges the refrigerant charged in the refrigerant circuit 44, whereby the refrigerant circulates in the refrigerant circuit 44 and the refrigeration cycle operation is performed.
The shelf board 15g is located above the electronic device 11 placed on the shelf board 15a. An air passage 16c through which air can flow is formed between the front end of the shelf board 15g and the door 20. At the position where the shelf board 15g is arranged in the vertical direction, the air flows from the bottom to the top through the air passage 16c.

  In the present embodiment, the electronic device 11 placed on the shelf plates 15a and 15b includes an electronic device fan 47 for cooling therein. The electronic device 11 drives the electronic device fan 47 to take in the air in the cabinet 12 to cool the internal device, and from the back surface 11a on the side where the electronic device fan 47 is provided to the inside. Exhaust air after cooling the equipment. In the present embodiment, the electronic device 11 is placed on the shelf plates 15a and 15b so that the back surface 11a faces the door 20 provided on the front surface of the cabinet 12. Therefore, when the electronic device fan 47 is driven, air flows as shown by an arrow Y1 in FIGS.

  As shown in FIG. 1, a door 20 is provided on the front surface of the cabinet 12 so as to be freely opened and closed via a door shaft (not shown). The door 20 closes the opening 13 of the cabinet 12 when closed. More specifically, as shown in FIG. 1, an elastic packing 22 is attached along the outer edge of the back surface 21 of the door 20 (the surface facing the cabinet 12 when the door 20 is closed). When the door 20 is closed, the gap between the door 20 and the cabinet 12 is completely closed while the packing 22 is elastically deformed between the door 20 and the cabinet 12. Of the four sides of the door 20, three latch members 23 are provided at intervals in the vertical direction on the side facing the up and down side on which the door shaft is provided, as shown in FIG. 1. A latch receiver 24 is provided at a position corresponding to each of the latch members 23 on the front surface of the cabinet 12. When the door 20 is in the closed state, the latch member 23 and the latch receiver 24 are engaged with the door 20 pressed against the cabinet 12, so that the packing 22 is attached to the door 20 while the door 20 is closed. The state of being pressed and elastically deformed is maintained, and the gap between the door 20 and the cabinet 12 is closed.

  As shown in FIG. 1, a panel unit 30 is provided in the approximate front center of the door 20. The panel unit 30 includes a display 31 for displaying various information such as the current temperature in the cabinet 12, and an operator 32 for instructing operation start / stop of the electronic device cooling apparatus 1A. I have.

  As shown in the sectional view of FIG. 2 (the left wall portion 12b and the right wall portion 12c are not shown in FIG. 2), each wall portion constituting the door 20 and the cabinet 12 has a cavity formed therein. A face material is provided, and a heat insulating material 35 is filled in a cavity inside the face material. When the door 20 is closed, the heat insulating material 35 thermally shuts off the internal space 14 of the cabinet 12 and the outside of the cabinet 12, and the temperature of the internal space 14 is affected by the temperature outside the cabinet 12. Is prevented.

  In the lower wall portion 12e, an outside air introduction portion 51 (outside air introduction means) for introducing outside air into the cabinet 12 is formed. The outside air introduction part 51 is formed with an outside air introduction path 52 penetrating the lower wall portion 12e in the vertical direction. A position corresponding to the lower surface of the outside air introduction path 52 is covered with the outside air. A barrier 53 for preventing dust on the ground from entering the introduction path 52 is provided. When the outside air is introduced into the cabinet 12, the outside air is introduced into the cabinet 12 through the outside air introduction path 52 of the outside air introduction unit 51 in accordance with the driving of the outside air introduction fan 54 described later. At that time, the barrier 53 prevents the dust on the ground from entering the cabinet 12.

A desiccant dehumidifier 55 (dehumidifying means) is provided at a position corresponding to the upper surface of the outside air introduction path 52. The desiccant dehumidifier 55 includes a dehumidifying unit 56 that allows air to pass therethrough. The dehumidifying unit 56 includes a desiccant (desiccant) such as a silica gel-based adsorbent. The desiccant dehumidifier 55 dries the air passing through the dehumidifying unit 56 by adsorbing moisture of the air passing through the dehumidifying unit 56 to the desiccant.
As shown in FIGS. 2 and 3, the desiccant dehumidifier 55 includes a dehumidifier support portion erected on the lower wall portion 12 e in a state where the dehumidification portion 56 covers the upper surface of the outside air introduction path 52 of the outside air introduction portion 51. 57. The air introduced into the cabinet 12 through the outside air introduction path 52 with the driving of the outside air introduction fan 54 described later is guided to the dehumidifying part 56 of the desiccant dehumidifier 55 by the dehumidifier support part 57, and in the dehumidifying part 56. After being dried, the air is blown upward from the dehumidifying unit 56.

  In the back wall portion 12d, a regeneration outside air introduction hole 59 penetrating the back wall portion 12d in the horizontal direction is formed at a position corresponding to the position where the shelf plate 15b is provided, and below the regeneration outside air introduction hole 59, Is formed with a regeneration inside air exhaust hole 60 penetrating the back wall portion 12d in the horizontal direction.

  The regeneration inside air discharge hole 60 is a hole for discharging air after regenerating the desiccant in a desiccant regeneration operation to be described later for regenerating the desiccant of the dehumidifying unit 56 of the desiccant dehumidifier 55. A regeneration operation fan 61 is provided in the vicinity of the regeneration inside air discharge hole 60. During the desiccant regeneration operation, the regeneration operation fan 61 is driven, and outside air is introduced from the outside air introduction section 51. After the desiccant is regenerated, it is discharged to the outside through the inside air discharge hole 60 during regeneration.

  A discharge hole opening / closing member 62 is provided at a position corresponding to the inside air discharge hole 60 at the time of regeneration on the outer surface of the back wall portion 12d (surface facing the outdoor side). The discharge hole opening / closing member 62 is a plate-like member, and rotates between a closed state (FIG. 2) and an open state (FIG. 3) about the rotation shaft 63. 60 is closed, and the regeneration inside air discharge hole 60 is opened in the open state. The discharge hole opening / closing member 62 is urged so as to be kept closed by an urging member (not shown), and is kept closed while the regeneration operation fan 61 is not driven. On the other hand, when the regeneration operation fan 61 is driven, the discharge hole opening / closing member 62 is opened by the pressure of the air blown out through the regeneration inside air discharge hole 60 as the regeneration operation fan 61 is driven. .

A regeneration outside air introduction hole 59 formed above the regeneration inside air discharge hole 60 is a hole for introducing outside air into the cabinet 12 in a desiccant regeneration operation described later.
A ventilation duct 65 is provided on the outer surface of the back wall portion 12d and corresponding to the regeneration outside air introduction hole 59 so as to cover the regeneration outside air introduction hole 59 and open downward. The duct 65 prevents the outdoor dust and rain water during rain from entering the cabinet 12 through the outside air introduction hole 59 during regeneration.
In addition, an outside air introduction hole opening / closing member 66 is provided on the inner surface of the back wall portion 12d at a position corresponding to the outside air introduction hole 59 during regeneration. The outside air introduction hole opening / closing member 66 is a plate-like member, and has a first state (FIG. 2) in which the outside air introduction hole 59 is closed and the cooling air opening 68 is opened around the rotation shaft 67. It rotates between the second state (FIG. 3) in which the outside air introduction hole 59 is opened during regeneration and the cooling air opening 68 is closed. The outside air introduction hole opening / closing member 66 is connected to an opening / closing control motor 73 (FIG. 4) having a stepping motor, and enters either the first state or the second state according to the driving of the opening / closing control motor 73. It rotates as follows.

The upper wall portion 12a is formed with a cooled air discharge portion 70 for discharging the air after cooling the electronic device 11 to the outside of the room. The post-cooling air discharge part 70 is formed with a post-cooling air discharge path 71 that penetrates the upper wall portion 12a in the vertical direction. In the covered state, a barrier 72 for preventing outdoor dust and rainwater from entering the air discharge path 71 after cooling is provided.
In addition, an outside air introduction fan 54 is provided at a position corresponding to the upper surface of the after-cooling air discharge path 71. When the outside air introduction fan 54 is driven, the air in the cabinet 12 is discharged to the outside through the air discharge path 71 after cooling.

The electronic device cooling apparatus 1A includes a desiccant regeneration mechanism 75 (desiccant regeneration means). The desiccant regeneration mechanism 75 includes a heat absorbing portion 76 provided at a position corresponding to the lower surface of the cooled air discharge passage 71, and a heat radiating portion 78 connected to the heat absorbing portion 76 via a connection pipe 77. . The heat radiating part 78 is provided inside the dehumidifying part 56 of the desiccant dehumidifier 55.
The connection pipe 77 is filled with working refrigerant under reduced pressure. The connection pipe 77 is provided with a circulation pump 79 for circulating the working refrigerant in the connection pipe 77 and a closing valve 74 for stopping the circulation of the working refrigerant in the connection pipe 77.
The desiccant regeneration mechanism 75 is a mechanism for regenerating the desiccant of the dehumidifying unit 56 of the desiccant dehumidifier 55 during the desiccant regeneration operation. The desiccant regeneration operation will be described later.

FIG. 4 is a block diagram showing a functional configuration of the electronic device cooling apparatus 1A.
The control unit 50 centrally controls each part of the electronic device cooling apparatus 1A. The control unit 50 controls a CPU as an arithmetic execution unit, a basic control program executed by the CPU, data related to the basic control program, and the like. A ROM that stores data in a nonvolatile manner, a program that is executed by the CPU, a RAM that temporarily stores data related to the program, and other peripheral circuits are provided.

A compressor 40, an expansion valve 42, and a heat source machine fan 43 are connected to the control unit 50, and these devices are controlled by the control unit 50 to execute a refrigeration cycle operation.
The display unit 31 a displays various types of information on the display unit 31 under the control of the control unit 50.
The operation unit 32 a detects an operation of the operation element 32 and outputs a signal corresponding to the operation to the control unit 50.
The in-casing temperature sensor 25 is provided inside the cabinet 12, detects the temperature in the cabinet 12, and outputs it to the control unit 50. The in-casing temperature sensor 25 includes a thermistor, for example. The control unit 50 detects the temperature in the cabinet 12 based on the detection value of the in-casing temperature sensor 25.
The outdoor temperature sensor 26 (outside air temperature detection means) is provided outside the cabinet 12, detects the outdoor temperature, and outputs it to the control unit 50. The outdoor temperature sensor 26 includes, for example, a thermistor. The controller 50 detects the outdoor temperature based on the detection value of the outdoor temperature sensor 26.
The exhaust temperature sensor 200 detects the temperature of the air exhausted from the cabinet 12 and outputs it to the control unit 50. The control unit 50 detects the temperature of the air exhausted from the cabinet 12 based on the detection value of the exhaust temperature sensor 200.
The controller 50 is connected to an outside air introduction fan 54, a regeneration operation fan 61, a shut-off valve 74, a circulation pump 79, and an opening / closing control motor 73, and the devices including these devices are controlled to control the low temperature described later. Hour operation, high temperature operation and desiccant regeneration operation are executed.

Next, the operation of the electronic device cooling apparatus 1A will be described.
FIG. 5 is a flowchart showing the operation of the electronic device cooling apparatus 1A.
In the following operation, the control unit 50 functions as a cooling unit.
First, the control unit 50 of the electronic device cooling apparatus 1A determines whether or not to perform a desiccant regeneration operation (step SA1). The desiccant regeneration operation is an operation for regenerating the desiccant of the dehumidifying unit 56 of the desiccant dehumidifier 55. In the electronic device cooling device 1A according to the present embodiment, a predetermined time from the start of the operation of the electronic device cooling device 1A. The desiccant regeneration operation is executed every time elapses. Therefore, in step SA1, the control unit 50 determines whether or not a predetermined time has elapsed since the previous desiccant regeneration operation. If the predetermined time has elapsed, the control unit 50 executes the desiccant regeneration operation.
In step SA1, when the desiccant regeneration operation is performed (step SA1: YES), the control unit 50 is currently performing a high temperature operation described later, and the temperature of the air discharged from the cabinet 12 is a predetermined value. It is determined whether the temperature is higher than the exhaust temperature threshold (step SA2). The reason for the operation in step SA2 will be described later.

In step SA2, when the high temperature operation is currently being executed and the temperature of the air discharged from the cabinet 12 is higher than the predetermined exhaust temperature threshold (step SA2: YES), the control unit 50 performs the desiccant regeneration. The process returns to step SA1 without executing the operation.
On the other hand, in step SA2, when the operation is not performed at a high temperature or the temperature of the air discharged from the cabinet 12 is lower than a predetermined exhaust temperature threshold value (step SA2: NO), the control unit 50 executes the desiccant regeneration operation. (Step SA3), and the process returns to Step SA1.

  On the other hand, when the desiccant regeneration operation is not executed in step SA1 (step SA1: NO), the control unit 50 detects the outdoor temperature based on the detected value of the outdoor temperature sensor 26, and the detected outdoor temperature is a predetermined value. It is determined whether it is lower than the threshold (step SA4).

Here, the predetermined threshold will be described.
The predetermined threshold value is a threshold value for determining whether the operation at the low temperature or the high temperature operation is performed. When the outdoor temperature is lower than the predetermined threshold value, the low temperature operation is performed, When the outdoor temperature is higher than a predetermined threshold, the high temperature operation is executed. The predetermined threshold value is determined based on a target temperature in the cabinet 12 for reliably cooling the electronic device 11 in the cabinet 12. Specifically, the predetermined threshold value is set to a temperature at which the inside of the cabinet 12 can fall below the target temperature when outside air is introduced into the cabinet 12. For example, when the target temperature is 20 ° C., the predetermined threshold value is 15 ° C.

  In step SA4, when the outdoor temperature is lower than the predetermined threshold (step SA4: YES), the control unit 50 performs the low temperature operation (step SA5), returns the processing procedure to step SA1, and the outdoor temperature is When it is higher than the predetermined threshold (step SA4: NO), the high temperature operation is executed (step SA6), and the processing procedure is returned to step SA1.

Next, the desiccant regeneration operation in step SA3 will be described using the flowcharts of FIGS.
In the desiccant regeneration operation, the control unit 50 first stops driving the compressor 40 (step SB1). Next, the control unit 50 drives the outside air introduction fan 54 (step SB2). Next, the control unit 50 drives the regeneration operation fan 61 (step SB3). Next, the controller 50 drives the open / close control motor 73 to place the outside air introduction hole opening / closing member 66 in the second state (step SB4). Next, the control unit 50 opens the closing valve 74 (step SB5). Next, the control unit 50 drives the circulation pump 79 (step SB6).
Through a series of processes in steps SB1 to SB6, the electronic device cooling apparatus 1A is brought into a state shown in FIG. 3, and an air flow indicated by arrows Y3 and Y4 in FIG.
Here, the desiccant regeneration operation will be described by explaining the air flow indicated by the arrows Y3 and Y4.

During the desiccant regeneration operation, as indicated by an arrow Y3, air is introduced into the cabinet 12 from the regeneration outside air introduction hole 59 as the outside air introduction fan 54 is driven. The air introduced into the cabinet 12 from the outside air introduction hole 59 at the time of regeneration passes through the electronic device 11, then passes through the heat absorbing portion 76 of the desiccant regeneration mechanism 75, and is discharged from the air discharge portion 70 after cooling to the outside. . In the heat absorption part 76, the working refrigerant evaporates due to the heat of the air after being discharged from the electronic device 11.
The working refrigerant evaporated in the heat absorption part 76 flows into the heat radiation part 78 through the gas pipe 77 a of the connection pipe 77 as the circulation pump 79 is driven.

Further, during the desiccant regeneration operation, air is introduced into the cabinet 12 from the outside air introduction unit 51 as the regeneration operation fan 61 is driven, as indicated by an arrow Y4. Then, the air introduced into the cabinet 12 from the outside air introduction unit 51 passes through the dehumidifying unit 56 of the desiccant dehumidifier 55.
Here, in the heat radiating section 78 existing inside the dehumidifying section 56, the working refrigerant dissipates heat and liquefies the air introduced into the cabinet 12 through the outside air introducing section 51. Thereby, the said air is heated and the relative humidity of the said air falls. The low-humidity air passes through the desiccant in the dehumidifying section 56 of the desiccant dehumidifier 55 to regenerate these desiccants. The air which regenerated the desiccant is discharged from the regeneration inside air discharge hole 60 as the regeneration operation fan 61 is driven, as indicated by an arrow Y4.
Note that, during the desiccant regeneration operation, the cooling air opening 68 is blocked by the outside air introduction hole opening / closing member 66, and therefore cooling of the electronic device 11 is hindered by the air heated by the heat radiating portion 78, as indicated by an arrow Y4. There is nothing.

  Now, returning to FIG. 6 described above, in step SB7, the control unit 50 starts measuring the elapsed time after the start of the desiccant regeneration operation. Next, the control unit 50 determines whether or not a predetermined time has elapsed as a time when the desiccant regeneration operation should be performed (step SB8). When a predetermined time has elapsed since the start of measurement of the elapsed time (step SB8: YES), the control unit 50 ends the desiccant regeneration operation.

  Thus, in this embodiment, the desiccant of the dehumidifying part 56 of the desiccant dehumidifier 55 can be suitably regenerated by the desiccant regeneration mechanism 75 using the exhaust heat of the electronic device 11.

Next, the low temperature operation in step SA5 in FIG. 5 will be described with reference to the flowcharts in FIGS.
In the low temperature operation, the control unit 50 stops driving the compressor 40 (step SC1). Next, the controller 50 drives the outside air introduction fan 54 (step SC2). Next, the control unit 50 stops the regeneration operation fan 61 (step SC3). Next, the controller 50 controls the open / close control motor 73 to place the outside air introduction hole opening / closing member 66 in the first state (step SC4). Next, the control unit 50 closes the closing valve 74 (step SC5). Next, the control unit 50 stops the circulation pump 79 (step SC6). Note that the circulation of the working refrigerant in the connection pipe 77 of the desiccant regeneration mechanism 75 is completely stopped by the operations of Step SC5 and Step SC6.
Through the series of processes in steps SC1 to SC6 described above, the electronic device cooling apparatus 1A enters the state shown in FIG. 2, and an air flow indicated by an arrow Y5 in FIG.
Here, the cooling method of the electronic device 11 in the low temperature operation will be described by explaining the air flow indicated by the arrow Y5.

During operation at low temperatures, as indicated by the arrow Y5, outside air is introduced through the outside air introduction unit 51 as the outside air introduction fan 54 is driven. The air introduced here is air having a temperature lower than a predetermined threshold, that is, air having a temperature at which the inside of the cabinet 12 can reach the target temperature.
The air introduced into the cabinet 12 through the outside air introduction unit 51 passes through the dehumidifying unit 56 of the desiccant dehumidifier 55, and the moisture is removed to become dry air. The dried air passes through the electronic device 11 after passing through the cooling air opening 68, cools the electronic device 11, and then is discharged outside the room through the post-cooling air discharge unit 70.
In addition, since the air which cools the electronic device 11 is dry air, it is prevented that the water | moisture content contained in the air has a bad influence with respect to the apparatus which the electronic device 11 incorporates.

  Thus, in this embodiment, when the temperature of outside air is lower than a predetermined threshold value, the above-described low temperature operation is performed. In this low temperature operation, as shown in step SC1 of the flowchart of FIG. 7, the driving of the compressor 40 is stopped, so that no electric power for driving the compressor 40 is required. Thereby, the cost concerning the driving | operation of 1 A of electronic device cooling devices can be reduced.

Next, the high temperature operation will be described with reference to the flowcharts of FIGS.
In the high temperature operation, in step SC1 of the flowchart of FIG. 7, an operation different from the low temperature operation is performed in that the compressor 40 is driven. When the operation shown in the flowchart of FIG. 7 is performed, the electronic device cooling apparatus 1A enters the state shown in FIG. 2 and the air flow as shown by the arrow Y5 in FIG. Is done.
Here, the cooling method of the electronic device 11 in the high temperature operation will be described by explaining the air flow indicated by the arrow Y5.

In the high temperature operation, the outside air is introduced through the outside air introduction unit 51 as the outside air introduction fan 54 is driven, as indicated by an arrow Y5. The air introduced here is air that is higher than a predetermined threshold.
The air introduced into the cabinet 12 through the outside air introduction unit 51 passes through the dehumidifying unit 56 of the desiccant dehumidifier 55, and the moisture is removed to become dry air. Then, it passes through the evaporator 36 and is cooled. By cooling the evaporator 36, the temperature of the air becomes a temperature at which the electronic device 11 can be cooled. The air cooled by the evaporator 36 passes through the electronic device 11 through the cooling air opening 68, cools the electronic device 11, and then is discharged outside through the air discharge unit 70 after cooling. In addition, since the air which cools the electronic device 11 is dry air, it is prevented that the water | moisture content contained in the air has a bad influence with respect to the apparatus which the electronic device 11 incorporates. In addition, since moisture hardly condenses in the evaporator 36, when the outside air is cooled by the evaporator 36, the input for cooling the outside air can be reduced.

  As described above, in the present embodiment, when the temperature of the outside air is higher than the predetermined threshold, the above-described high temperature operation is performed, and the electronic device 11 is reliably cooled by the air cooled by the evaporator 36. .

In Step SA2 of FIG. 5, when the high temperature operation is being performed and the temperature of the air exhausted from the cabinet 12 is higher than a predetermined exhaust temperature threshold, the control unit 50 executes the desiccant regeneration operation. do not do.
As described above, this is a state in which the outside air is higher than a predetermined threshold value during high temperature operation. Under such conditions, when the temperature of the air exhausted from the cabinet 12 is higher than a predetermined exhaust temperature threshold, the electronic device 11 is cooled by the air cooled by the evaporator 36 without executing the desiccant regeneration operation. This is because the electronic device 11 can be cooled reliably. Here, when the temperature of the air exhausted from the cabinet 12 is higher than the predetermined exhaust temperature threshold, the predetermined exhaust temperature threshold is set to function by causing the evaporator 36 to function in order to cool the electronic device 11. The temperature is set to a temperature at which the electronic device 11 needs to be cooled by the air cooled by 36.

As described above, the electronic device cooling apparatus 1 </ b> A according to the present embodiment includes the cabinet 12 that is installed outside the room and stores the electronic device 11, and the evaporator 36 provided in the cabinet 12. And the control part 50 of 1 A of electronic device cooling devices cools the electronic device 11 using the evaporator 36, when the outdoor temperature is high, and cools the electronic device 11 with external air when the outdoor temperature is low.
According to this, when the outdoor temperature is low, the electronic device 11 can be cooled by the outside air without causing the evaporator 36 to function, and the cost for operation can be reduced.

The electronic device cooling apparatus 1 </ b> A according to the present embodiment includes an outside air introduction unit 51 that introduces outside air into the cabinet 12 as the outside air introduction fan 54 is driven. Then, when the outdoor temperature is low, the control unit 50 of the electronic device cooling apparatus 1A introduces outside air into the cabinet 12 from the outside air introduction unit 51 and cools the electronic device 11.
According to this, the electronic device 11 can be suitably cooled by outside air by introducing outside air from the outside air introducing portion 51.

The electronic device cooling apparatus 1 </ b> A according to the present embodiment includes a desiccant dehumidifier 55 that dehumidifies the air introduced from the outside air introduction unit 51 into the cabinet 12.
According to this, it is possible to prevent the outside air from being dried by the desiccant dehumidifier 55 and to prevent the water contained in the outside air from adversely affecting the electronic device 11. Further, since moisture hardly condenses in the evaporator 36, the input for cooling the outside air when the outside air is cooled by the evaporator 36 can be reduced.

Further, the electronic device cooling apparatus 1A according to the present embodiment includes a desiccant regeneration mechanism 75 that regenerates the desiccant (desiccant) of the desiccant dehumidifier 55 using the exhaust heat of the electronic device 11.
According to this, the desiccant of the desiccant dehumidifier 55 can be suitably regenerated using the exhaust heat of the electronic device 11.

Moreover, in the electronic device cooling apparatus 1 </ b> A according to the present embodiment, the heat insulating material 35 is disposed on each wall portion of the cabinet 12.
According to this, it is possible to prevent the temperature of the outside air from adversely affecting the inside of the cabinet 12.

The electronic device cooling apparatus 1A according to the present embodiment includes an outdoor temperature sensor 26 that detects an outdoor temperature, and the outdoor temperature detected based on the detection value of the outdoor temperature sensor 26 is lower than a predetermined threshold value. When the temperature is low, the low temperature operation is executed, and when the outdoor temperature is lower than a predetermined threshold, the high temperature operation is executed.
According to this, it is possible to reliably detect that the temperature of the outside air is low enough to cool the electronic device 11.

In the present embodiment, the above-described predetermined threshold is determined based on a target temperature in the cabinet 12 for cooling the electronic device 11.
According to this, the predetermined threshold value can be reliably set to the temperature of the outside air so that the inside of the cabinet 12 becomes the target temperature.

Second Embodiment
Next, an electronic device cooling apparatus 1B according to the second embodiment will be described with reference to FIG.
In FIG. 8, the same components as those shown in FIGS. 2 and 3 are denoted by the same reference numerals, and the description thereof is omitted.

In the electronic device cooling apparatus 1B according to the present embodiment, an air passage 16d is formed between the front end of the shelf plate 15b and the door 20. In the position where the shelf board 15b is arranged in the vertical direction, the air flows from the bottom to the top through the air passage 16d.
The electronic device 11 is placed on the shelf boards 15a and 15b. In that case, in this embodiment, the electronic device 11 is mounted on the shelf boards 15a and 15b so that the back surface 11a of the electronic device 11 faces the back wall part 12d of the cabinet 12. Therefore, when the electronic device fan 47 is driven, air flows as shown by an arrow Y8 in FIG.

  An outside air introduction portion 80 (outside air introduction means) for introducing outside air into the cabinet 12 is formed on the lower wall portion 12e of the electronic device cooling apparatus 1B. The outside air introduction portion 80 is formed with an outside air introduction passage 81 that penetrates the lower wall portion 12 e in the vertical direction, and a barrier portion 82 is provided at a position corresponding to the lower surface of the outside air introduction passage 81. As shown in FIG. 8, the outside air introduction portion 80 is provided on the front side of the lower wall portion 12 e with respect to the center of the lower wall portion 12 e in the front-rear direction.

A desiccant rotor shaft 83 is erected on the lower wall portion 12e, and a desiccant rotor 84 is provided on the desiccant rotor shaft 83. The desiccant rotor 84 has a disk shape, and the desiccant rotor shaft 83 passes through the center thereof. The desiccant rotor 84 includes a desiccant inside, and the desiccant dehumidifies the air introduced into the cabinet 12 from the outside air introduction unit 80. This will be described later.
The desiccant rotor shaft 83 is connected to the shaft rotation motor 110 (FIG. 9), and rotates in the horizontal direction (circumferential direction) based on the drive of the shaft rotation motor 110. As the desiccant rotor shaft 83 rotates, the desiccant rotor 84 rotates at a predetermined speed in the direction indicated by the arrow Y7 in FIG.

  Although not shown, the desiccant rotor shaft 83 is connected to a dehumidifying chamber 85 formed on the front side of the desiccant rotor shaft 83 and a partition plate for partitioning the regeneration chamber 86 formed on the back side. Specifically, a plate-like partition plate extending in the left-right direction is provided at a location where the desiccant rotor shaft 83 is located, and the dehumidifying chamber 85 and the regeneration chamber 86 are partitioned by this partition plate. . In the partition plate, a notch is formed at a position where the desiccant rotor 84 is located, and the desiccant rotor 84 can be rotated by this notch.

The dehumidifying chamber 85 is a room for dehumidifying the air introduced into the cabinet 12 from the outside air introduction unit 80 by the desiccant rotor 84, and the dehumidifying side for dehumidifying the air in a portion extending to the dehumidifying chamber 85 in the desiccant rotor 84. A desiccant rotor 84a is formed. The air introduced from the outside air introduction unit 80 is dehumidified by passing through the dehumidifying side desiccant rotor 84a of the desiccant rotor 84.
On the other hand, the regeneration chamber 86 is a chamber for regenerating the desiccant included in the desiccant rotor 84. In the desiccant rotor 84, a regeneration side desiccant rotor 84 b is formed in a portion extending to the regeneration chamber 86. The reproduction chamber 86 will be described later.

A plate member 87 extending in the horizontal direction is provided above the desiccant rotor 84. In this plate member 87, a dehumidified air introduction hole 88 penetrating the plate member 87 is provided above the dehumidifying side desiccant rotor 84 a. Is formed. The air that has passed through the dehumidifying side desiccant rotor 84a of the desiccant rotor 84 is blown upward from the dehumidifying air introduction hole 88.
The evaporator 36 is disposed above the dehumidified air introduction hole 88. In the present embodiment, when the outdoor temperature is higher than a predetermined threshold, the evaporator 36 is caused to function, and the electronic device 11 is cooled by the air cooled by the evaporator 36.

  An inclined plate 89 is connected to the end portion 87a on the back side of the plate member 87 so as to go upward as it goes to the back side. A cooling chamber partition plate 94 is connected to the rear end 89 a of the inclined plate 89. The cooling chamber partition plate 94 extends upward from the end portion 89 a of the inclined plate 89, then bends forward at the bent portion 93, further bends upward at the bent portion 91, and further bent portion 92. At the front, and extends to the door 20. In the cooling chamber partition plate 94, exhaust heat derivation holes 96 penetrating in the front-rear direction are formed at positions corresponding to the electronic device fan 47 of the electronic device 11.

  A cooling chamber 95 is formed in a space partitioned by the cooling chamber partition plate 94 and the shelf plate 15c. The cooling chamber 95 is a room for cooling the electronic device 11, and the electronic device 11 is cooled by the air introduced into the cooling chamber 95 through the above-described dehumidified air introduction hole 88.

  On the other hand, a heat exhaust chamber 99 is formed in a space surrounded by the cooling chamber partition plate 94 and the upper wall portion 12a and the back wall portion 12d. Air after cooling the electronic device 11 is driven into the exhaust heat chamber 99 through the exhaust heat derivation hole 96 by driving the outside air introduction fan 54 and the electronic device fan 47.

  Below the exhaust heat chamber 99, an exhaust heat air introduction plate 97 extending in parallel with the inclined plate 89 is provided below the inclined plate 89. The rear end portion 97a of the exhaust heat air introduction plate 97 is connected to the back wall portion 12d, and the front end portion 97b is located at a position corresponding to the position where the plate member 87 exists in the vertical direction. Yes. A regenerative air introduction path 100 is formed in a space between the inclined plate 89 and the exhaust heat air introduction plate 97. As the regeneration operation fan 101 described later is driven, the air in the exhaust heat chamber 90 flows into the regeneration chamber 86 through the regeneration air introduction path 100.

  An opening opening / closing member 102 is provided at a position corresponding to the opening on the lower surface of the regeneration air introduction path 100. The opening / closing member 102 rotates between an open state (FIG. 8) and a closed state around a rotation shaft 103 provided at an end 97 b on the front side of the exhaust heat air introduction plate 97. The opening / closing member 102 is urged so as to be kept closed by an urging member (not shown), and the regeneration chamber is opened through the opening on the lower surface of the regeneration air introduction path 100 as the regeneration operation fan 101 is driven. An open state is established by the pressure of the air blown to 86.

  In the back wall portion 12d of the regeneration chamber 86, a regeneration inside air discharge hole 105 penetrating in the front-rear direction is provided in the back wall portion 12d below the desiccant rotor 84. The regeneration internal air discharge hole 105 is a hole for discharging the air after regenerating the desiccant of the regeneration-side desiccant rotor 84b of the desiccant rotor 84. A regeneration operation fan 101 is provided in the vicinity of the regeneration inside air discharge hole 60, and the regeneration operation fan 101 is driven, and air is introduced from the exhaust heat chamber 90 into the regeneration chamber 86 through the regeneration air introduction path 100. Then, after the desiccant is regenerated by the introduced air, the air is discharged to the outside through the inside air discharge hole 105 at the time of regeneration.

  A ventilation duct 107 that opens downward is provided on the outer surface of the back wall portion 12d at a position corresponding to the regeneration inside air discharge hole 105 so as to cover the regeneration inside air discharge hole 105. The duct 107 prevents outdoor dust and rain water during rain from entering the cabinet 12 through the inside air discharge hole 105 during regeneration.

FIG. 9 is a block diagram showing a functional configuration of the electronic device cooling apparatus 1B.
As shown in FIG. 9, in this embodiment, a shaft rotation motor 110 is connected to the control unit 50, and the shaft rotation motor 110 is driven under the control of the control unit 50. As the shaft rotation motor 110 is driven, the desiccant rotor 84 rotates at a predetermined speed.

Next, the operation of the electronic device cooling apparatus 1B having the above configuration will be described with reference to the flowcharts of FIGS.
In the present embodiment, for the same reason as in the first embodiment described above, when the temperature of the outside air is lower than the predetermined threshold value, the low temperature operation is performed, and when the temperature of the outside air is higher than the predetermined threshold value, Do the driving. The difference between the low temperature operation and the high temperature operation is that in the low temperature operation, the compressor 40 is stopped and air is not cooled by the evaporator 36, and in the high temperature operation, the compressor 40 is driven and the air generated by the evaporator 36 is not cooled. It is the point which cools. As a result, as in the first embodiment described above, in low temperature operation, power for driving the compressor 40 becomes unnecessary, and the cost for operation can be reduced.

FIG. 9 is a flowchart showing the operation of the electronic device cooling apparatus 1B during low temperature operation.
In the low temperature operation, the control unit 50 stops driving the compressor 40 (step SD1). Next, the controller 50 drives the outside air introduction fan 54 (step SD2). Next, the control unit 50 drives the regeneration operation fan 101 (step SD3). Next, the controller 50 drives the shaft rotation motor 110 (step SD4).
Through a series of operations of these steps SD1 to SD4, the electronic device cooling apparatus 1B is in the state shown in FIG. 8 and the air flow indicated by the arrows Y10 and Y11 is formed in the cabinet 12.
Here, the cooling method of the electronic device 11 in the low temperature operation will be described by explaining the air flow of the arrows Y10 and Y11.

  During operation at low temperatures, air is introduced into the cabinet 12 from the outside air introduction section 80 as the outside air introduction fan 54 is driven, as indicated by an arrow Y10. Here, the air introduced into the cabinet 12 is air whose temperature is lower than a predetermined threshold, and is air that can cool the electronic device 11. The air introduced into the cabinet 12 passes through the dehumidifying side desiccant rotor 84a of the desiccant rotor 84 and is dehumidified. The air that has passed through the desiccant rotor 84 is led to the cooling chamber 95 through the dehumidified air introduction hole 88. The air introduced into the cooling chamber 95 passes through the electronic device 11, cools the electronic device 11, and then is led out to the exhaust heat chamber 99 from the exhaust heat exhaust hole 96. A part of the air introduced into the exhaust heat chamber 99 is exhausted from the air exhaust section 70 after cooling to the outside in accordance with the driving of the external air introduction fan 54.

On the other hand, as indicated by an arrow Y 11, a part of the air introduced from the cooling chamber 95 into the exhaust heat chamber 99 through the exhaust heat derivation hole 96 is regenerated air introduction path as the regeneration operation fan 101 is driven. 100 is introduced into the regeneration chamber 86. Here, the air introduced into the regeneration chamber 86 is heated by the exhaust heat of the electronic device 11 and has a reduced relative humidity.
The air introduced into the regeneration chamber 86 passes through the regeneration-side desiccant rotor 84b of the desiccant rotor 84, and regenerates the desiccant in the regeneration-side desiccant rotor 84b. The air that has regenerated the desiccant is discharged to the outside through the regeneration inside air discharge hole 105 as the regeneration operation fan 101 is driven.

  Here, as described above, the desiccant rotor 84 rotates at a predetermined speed in the direction indicated by the arrow Y7. Therefore, the desiccant that has dehumidified the air in the dehumidifying desiccant rotor 84a moves to the regeneration desiccant rotor 84b by the rotation of the desiccant rotor 84, and is regenerated in the regeneration desiccant rotor 84b. The regenerated desiccant moves to the dehumidifying side desiccant rotor 84a by the rotation of the desiccant rotor 84, and the operation of dehumidifying the air in the dehumidifying side desiccant rotor 84a is performed as needed. Thereby, it is always possible to dehumidify the air with the regenerated desiccant, and the efficiency of air dehumidification can be improved.

As described above, the electronic device cooling apparatus 1 </ b> B according to the present embodiment includes the desiccant rotor 84. Then, the desiccant (desiccant) of the regeneration-side desiccant rotor 84b of the desiccant rotor 84 is regenerated using the exhaust heat of the electronic device 11.
According to this, the desiccant of the regeneration-side desiccant rotor 84b of the desiccant rotor 84 can be suitably regenerated using the exhaust heat of the electronic device 11.

<Third Embodiment>
Next, a third embodiment will be described with reference to FIG.
In FIG. 11, the same components as those shown in FIGS. 2 and 3 are denoted by the same reference numerals, and the description thereof is omitted.

In the electronic device cooling apparatus 1C according to the present embodiment, an air passage 16e is formed between the front end of the shelf 15b and the door 20 in the shelf 15b of the first embodiment described above.
The electronic device 11 is placed on the shelf boards 15a and 15b. In that case, in this embodiment, the electronic device 11 is mounted on the shelf boards 15a and 15b so that the back surface 11a of the electronic device 11 faces the back wall part 12d of the cabinet 12. Therefore, when the electronic device fan 47 is driven, air flows as shown by an arrow Y12 in FIG.

Further, the electronic device cooling apparatus 1C according to the present embodiment includes a heat pipe 120 extending vertically along the back wall portion 12d. A working refrigerant is sealed in the heat pipe 120 under reduced pressure.
The upper end portion of the heat pipe 120 protrudes from the cabinet 12 through the upper wall portion 12a. More specifically, a heat pipe through hole 121 through which the heat pipe 120 passes is formed in the upper wall portion 12a, and the upper end portion of the heat pipe 120 extends from the cabinet 12 through the heat pipe through hole 121. It protrudes. A wall portion 122 is provided at a position corresponding to the upper surface of the heat pipe through-hole 121 to prevent outdoor dust and rain water during rain from entering the heat pipe through-hole 121.
In the heat pipe 120, a heat absorbing portion 123 is formed in a portion below the heat pipe through hole 121, and a heat radiating portion 124 is formed in a portion above the heat pipe through hole 121. Further, the heat pipe 120 is provided with a closing valve 125 for stopping the circulation of the working refrigerant in the heat pipe 120.

FIG. 12 is a block diagram showing a functional configuration of the electronic device cooling apparatus 1C.
As shown in FIG. 12, a closing valve 125 is connected to the control unit 50. The closing valve 125 is in an open state or a closed state under the control of the control unit 50.

Next, the operation of the electronic device cooling apparatus 1C according to the present embodiment will be described with reference to the flowcharts of FIGS.
In the present embodiment, for the same reason as in the first embodiment described above, when the temperature of the outside air is lower than the predetermined threshold value, the low temperature operation is performed, and when the temperature of the outside air is higher than the predetermined threshold value, Do the driving.
The difference between the low temperature operation and the high temperature operation is that the air is not cooled by the evaporator 36 by stopping the compressor 40 in the low temperature operation, but the air is cooled by using the heat pipe 120 while the high temperature operation is performed. In the time operation, the compressor 40 is driven to cool the air by the evaporator 36 and the heat pipe 120 is not used. As a result, as in the first embodiment described above, in low temperature operation, power for driving the compressor 40 becomes unnecessary, and the cost for operation can be reduced.

First, the operation of the electronic device cooling apparatus 1C in the low temperature operation will be described with reference to FIG.
In the low temperature operation, the control unit 50 first stops the compressor 40 (step SE1). Next, the control unit 50 stops the outside air introduction fan 54 (step SE2). Next, the control unit 50 opens the closing valve (step SE3).
By this operation, the heat pipe 120 cools the inside of the cabinet 12, thereby cooling the electronic device 11. Specifically, the working refrigerant evaporates due to the exhaust heat of the electronic device 11 in the heat absorbing portion 123, thereby cooling the inside of the cabinet 12. In the present embodiment, as shown in step SE2 of FIG. 12A, in the low temperature operation, the outside air introduction fan 54 is not driven, and the air cooled by the heat pipe 120 stays in the cabinet 12, A high cooling effect can be obtained by the staying low-temperature air.
The working refrigerant evaporated in the heat absorbing part 123 moves to the heat radiating part 124. Then, it is cooled and liquefied by the low-temperature outside air in the heat radiating section 124, and is circulated again to the heat absorbing section 123 by the capillary phenomenon of the liquid circulating wick attached to the inner wall of the heat pipe 120.
Due to the circulation of the working refrigerant between the heat absorbing section 123 and the heat radiating section 124 in the heat pipe 120, the electronic device 11 in the cabinet 12 is continuously cooled during the low temperature operation.

Next, the operation of the electronic device cooling apparatus 1C during high-temperature operation will be described with reference to FIG.
In the high temperature operation, first, the control unit 50 drives the compressor 40 (step SF1). Next, the controller 50 drives the outside air introduction fan 54 (step SF2). Next, the control unit 50 closes the closing valve 125 (step SF3). The function of the cooler for cooling the heat pipe 120 of the heat pipe 120 is stopped by the operation of step SF3.
By a series of operations of steps SF1 to SF3, an air flow indicated by an arrow Y13 is formed in the cabinet 12. More specifically, the outside air is introduced into the cabinet 12 from the outside air introduction portion 51 as the outside air introduction fan 54 is driven. The air introduced into the cabinet 12 passes through the evaporator 36, is cooled by the evaporator 36, passes through the electronic device 11, and cools the electronic device 11. The air that has passed through the electronic device 11 is discharged to the outside from the air discharge unit 70 after cooling as the outside air introduction fan 54 is driven.
As described above, the air cooled by the evaporator 36 passes through the electronic device 11, whereby the electronic device 11 is continuously cooled during the high temperature operation.

As described above, the electronic device cooling apparatus 1C according to the present embodiment includes the heat pipe 120 including the heat absorbing portion 123 extending in the cabinet 12 and the heat radiating portion 124 formed on the upper portion of the heat absorbing portion 123. I have. When the outdoor temperature is low, the electronic device cooling apparatus 1C absorbs the heat in the cabinet 12 by the heat absorbing unit 123 and cools the heat radiating unit 124 with the outside air to radiate the heat absorbed by the heat absorbing unit 123. To cool the electronic device 11.
According to this, when the outdoor temperature is low, the electronic device 11 can be cooled by using the heat pipe 120 without causing the evaporator 36 to function, and the cost for operation can be reduced. it can.

The above-described embodiment is merely an aspect of the present invention, and can be arbitrarily modified and applied within the scope of the present invention.
For example, in the present embodiment, the compressor 40 of the heat source unit 37 is driven by electric power related to the commercial power supply, but may be driven by a gas engine, for example.
Moreover, you may comprise so that the electric power which concerns on solar power generation can be supplied to each part of electronic device cooling device 1A, 1B, 1C. In particular, in the present embodiment, since the cabinet 12 is provided outside the room, for example, a member relating to solar power generation can be provided on the top of the cabinet 12 to efficiently supply power.

It is a perspective view of the electronic device cooling device concerning a 1st embodiment. It is sectional drawing of an electronic device cooling device. It is sectional drawing of an electronic device cooling device. It is a block diagram which shows the functional structure of an electronic device cooling device. It is a flowchart which shows operation | movement of an electronic device cooling device. It is a flowchart which shows operation | movement of an electronic device cooling device. It is a flowchart which shows operation | movement of an electronic device cooling device. It is sectional drawing of the electronic device cooling device which concerns on 2nd Embodiment. It is a block diagram which shows the functional structure of an electronic device cooling device. It is a flowchart which shows operation | movement of an electronic device cooling device. It is sectional drawing of the electronic device cooling device which concerns on 3rd Embodiment. It is a block diagram which shows the functional structure of an electronic device cooling device. It is a flowchart which shows operation | movement of an electronic device cooling device.

1A, 1B, 1C Electronic equipment cooling device 11 Electronic equipment 12 Cabinet 12a Upper wall (wall)
12b Left wall (wall)
12c Right wall (wall)
12d Back wall (wall)
12e Lower wall (wall)
26 Outdoor temperature sensor (outside temperature detection means)
35 Heat Insulating Material 36 Evaporator 50 Control Unit (Cooling Means)
51, 80 Outside air introduction part (outside air introduction means)
55 Desiccant dehumidifier (dehumidification means)
75 Desiccant regeneration mechanism (desiccant regeneration means)
84 Desiccant rotor 84b Recycling side desiccant rotor 120 Heat pipe 123 Heat absorption part 124 Heat radiation part

Claims (5)

A cabinet installed outside and storing electronic equipment, an evaporator provided in the cabinet,
When the outdoor temperature is high, the electronic device is cooled by the evaporator, and when the outdoor temperature is low, cooling means for cooling the electronic device by outside air;
An outside air introduction means for introducing outside air into the cabinet,
When the outdoor temperature is low, the cooling means cools the electronic device by introducing outside air into the cabinet by the outside air introducing means,
And Lud Shikanto dehumidifier to dehumidify the air introduced into the cabinet by the external air introduction means,
Desiccant regeneration means for regenerating the desiccant of the desiccant dehumidifier using exhaust heat of the electronic device,
The desiccant dehumidifier is a desiccant rotor, and the desiccant regenerating unit regenerates the desiccant on the regeneration side of the desiccant rotor using exhaust heat of the electronic device. A cabinet installed outside and storing electronic equipment, an evaporator provided in the cabinet,
When the outdoor temperature is high, the electronic device is cooled by the evaporator, and when the outdoor temperature is low, cooling means for cooling the electronic device by outside air;
A heat pipe having a heat absorbing portion extending into the cabinet and a heat radiating portion formed on the upper portion of the heat absorbing portion, and
When the outdoor temperature is low, the cooling means absorbs the heat in the cabinet by the heat absorption part, and cools the heat dissipation part by outside air to dissipate the heat absorbed by the heat absorption part. An electronic device cooling device characterized by cooling.   The electronic device cooling apparatus according to claim 1, wherein a heat insulating material is disposed on a wall portion of the cabinet.   The outdoor temperature detection means for detecting the outdoor temperature is further provided, and when the outdoor temperature detected by the outdoor temperature detection means is lower than a predetermined threshold, it is determined that the outdoor temperature is low. The electronic device cooling apparatus according to any one of 1 to 3.   The electronic device cooling apparatus according to claim 4, wherein the predetermined threshold is determined based on a target temperature in the cabinet for cooling the electronic device.

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