TW201319479A - Cooling device for housing - Google Patents

Abstract

A cooling device (1) for a housing has: an air heat exchanger (20); an electronic cooler (30) in which a Peltier element (35) is disposed between a heat absorbing side heat sink (31) and a heat releasing side heat sink (33); and a control unit (40) that drives fans (22, 23) for the air heat exchanger (20), a heat absorption fan (32), a heat release fan (34), and the Peltier element (35) on the basis of a temperature (T1) inside the housing, outside air temperature (T2), and Peltier element (35) cooling air temperature (T3). The control unit (40) drives the fans (22, 23) with (T2 < T1) as a condition when a first setting temperature is reached within the preset normal operating temperature range inside the housing, and when a second setting temperature that is higher than a first setting temperature is reached, the Peltier element (35) cooling is driven with (T3 >= SVB; SVB being a preset condensation determination value) as a condition along with stopping the drive of the fans (22, 23).

Description

Frame cooling device

The present invention relates to a cooling device for a frame for cooling a casing, and the casing houses a component (also referred to as a heating element) that controls heat generation such as a substrate.

Conventionally, a cooling device that stores the above-described heat generating body to a constant temperature or lower is widely known. For example, Patent Document 1 discloses a cooling device in which a cooling device of an integrated air heat exchange type air conditioner and a refrigerant air conditioner is installed in a casing. The cooling device is configured to use an air heat exchange type air conditioner and a refrigerant type air conditioner in response to the temperature inside the casing and the outside air temperature. Such a cooling device is configured to perform a plurality of sets in accordance with a heat load (the number of heat generating bodies). . Further, Patent Document 2 discloses that an internal air passage from the inside of the casing and an external air passage from the outside of the casing are disposed independently, and an air heat exchange element is disposed in a portion where the two intersect, and a thermoelectric element is disposed so that the heat absorbing portion is disposed The inner gas passage faces the rear side, and the heat radiating portion faces the outer air passage on the rear side. In such a cooling device, when the temperature of the internal gas passing through the air heat exchange element is high, cooling is performed by the thermoelectric element.

Further, Patent Document 3 discloses a cooling device that can perform humidity management in addition to the temperature inside the casing. This cooling device is a device using a thermoelectric element, and a humidity sensor is provided in the casing to perform operation control so that the dehumidification operation is performed when the predetermined humidity or higher is reached. Furthermore, in Patent Document 4, it is disclosed that the heat absorbing side of the thermoelectric element is accommodated. A cooling device that is brought into direct contact with the inside of the casing to obtain a cooling effect.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Laid-Open Patent Publication No. 2001-193995

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2005-55025

[Patent Document 3] Japanese Laid-Open Patent Publication No. 2008-141089

[Patent Document 4] Japanese Patent Laid-Open Publication No. 2003-8275

However, the cooling device disclosed in the above-mentioned Patent Document 1 has a structure in which a plurality of cooling devices of the integrated air heat exchange type air conditioner and the refrigerant type air conditioner are installed in accordance with the load, so that the installation space of the cooling device becomes large. The cost is also increased, and the control during cooling is complicated. Further, in the cooling device disclosed in Patent Document 2, in the case where the outside air temperature is higher than the internal gas, the internal gas is heated by the air heat exchange element, and it is necessary to pass the heated internal gas. The thermoelectric element is cooled. In other words, in the configuration disclosed in Patent Document 2, when the outside air temperature is high and the internal gas is directly cooled by the thermoelectric element, it is necessary to have a relatively large amount of energy.

Further, the cooling device disclosed in Patent Document 3 is provided with a humidity sensor that operates the thermoelectric element to perform dehumidification when the humidity exceeds a predetermined humidity, but discharge occurs in a frame having high airtightness, which may occur. Problems such as liquid discharge. Further, the cooling device disclosed in the above Patent Document 4 In the case where there are a plurality of heating elements in the frame, the number of the thermoelectric elements and the heat sink must be the same, the number of the heating elements is set, or the setting method is limited, and the cost is also high, and the control during cooling is complicated. Chemical. Further, since the thermoelectric element is in direct contact with the heating element, it may also have an influence on the heating element due to condensation.

The present invention has been made in view of the above problems, and it is an object of the invention to provide a cooling device which can effectively cool a housing body without being affected by an installation state of a heat generating body provided in a housing. Further, it is an object of the present invention to provide a cooling device which can effectively cool a casing and prevent liquid discharge.

In order to achieve the above object, the cooling device for a frame body according to the present invention includes: an air heat exchanger, which is provided in a casing that houses the heat generating body, and can exchange heat with air outside the frame; and The cooler is a heat-dissipating-side heat sink provided with a heat-absorbing fan inside the casing, and a heat-dissipating heat sink having a heat-dissipating fan outside the casing, and the heat-dissipating-side heat sink and the heat-dissipating heat sink a cooling element is disposed between the control unit and the control unit, and the fan, the heat absorbing fan, and the heat absorbing fan that drive the air heat exchanger are controlled according to a temperature T1 inside the casing, an outside air temperature T2, and a cooling air temperature T3 of the cooling element. a cooling fan and a cooling element; wherein the control unit drives the air heat exchanger under the condition of (T2<T1) when the temperature rises to the first set temperature within a predetermined operating temperature range of the preset frame The fan stops driving when it rises to the second set temperature higher than the first set temperature The fan of the air heat exchanger is operated while cooling (T3≧SVB, SVB is a predetermined condensation determination value), and the cooling element is cooled and driven.

The cooling device for a frame body configured as described above is configured such that an air heat exchanger and an electronic cooler are disposed in a casing in which the heating element is housed, and the control unit switches the control operation in accordance with a predetermined condition, so that the cooling frame can be efficiently cooled. in vivo. In this case, the switching control between the air exchanger and the electronic cooler is performed based on the temperature T1 inside the casing, the outside air temperature T2, and the cooling temperature T3 of the cooling element, so that an efficient cooling effect can be obtained. In particular, in the normal operating temperature range of the preset frame, when the temperature rises to the first set temperature, the fan of the air heat exchanger is driven, and the driving of the fan is based on (T2<T1). For this reason, when the temperature inside the casing is higher than the temperature of the outside air, it is not necessary to introduce a higher temperature external air into the casing, and the temperature inside the casing does not rise sharply. Further, when the temperature rises to a second set temperature higher than the first set temperature, the fan that drives the air heat exchanger is stopped, and the cooling element (switching operation) is cooled and cooled, and the cooling can be efficiently cooled. Inside the frame. Further, the cooling drive of the cooling element can be prevented from being discharged in the casing by stopping the control of the cooling drive when the cooling air temperature of the cooling element is lower than the condensation determination value (SVB).

In the cooling device for a frame body configured as described above, the control unit controls the heating to be the cooling when the temperature is lowered to a third set temperature lower than the first set temperature within a normal operating temperature range. The components are also good.

In this case, the temperature inside the frame is within the normal operating temperature range. In the inside, since the temperature in the casing is lowered, the temperature in the casing is raised to an appropriate temperature by heating the cooling element to be maintained.

Further, in the cooling device for a casing configured as described above, the cooling elements are arranged in parallel in a plurality of systems, and the control unit is ON/OFF driven for each system in accordance with the temperature T1 inside the casing. Also good.

With such a configuration, the load (temperature load) of the heat generating body housed in the casing can be adapted to the minimum configuration of the load (the most suitable capacity for the load) by sequentially operating each system. To control the operation, you can save energy. In particular, the degree of temperature fluctuation in the library can be improved as compared with the configuration in which the cooling element is turned ON/OFF in a manner in which the control operation is performed for each system and stage.

Therefore, in the configuration in which the above-described cooling elements are arranged in parallel in a plurality of systems, it is also preferable to form a plurality of cooling elements provided in a plurality of systems in parallel.

In such a manner, cooling and heating ability can be improved.

Further, in the cooling device for a frame body configured as described above, it is preferable that the control unit is controlled to maintain the driving state of the heat absorbing fan within the normal operating temperature range.

With such a configuration, by driving the heat absorption fan in the casing, the internal gas is constantly kept in a circulating state, and the inside of the casing can be stabilized. Temperature T1.

Further, in the cooling device for a frame body configured as described above, the control unit is preferably controlled to drive the heat radiation fan when the temperature rises to the first set temperature within the normal operating temperature range.

With such a configuration, in order to cool the heat sink on the heat radiating side of the electronic cooler before cooling the cooling element that drives the electronic cooler, the cooling efficiency at the time of cooling and driving the electronic cooler can be improved, and the cooling efficiency can be quickly exerted. Cooling effect. Further, after the cooling and driving of the cooling element is stopped, since the heat radiating fan is temporarily driven, the performance of the cooling element can be maintained for a long period of time.

Further, in the cooling device for a frame body configured as described above, the control unit controls to drive the fan of the air heat exchanger and the drive of the heat absorbing fan when the upper limit value of the normal operating temperature range is exceeded. The driving of the cooling fan and the cooling driver of the cooling element are also preferred.

With such a configuration, the temperature rise in the casing exceeds the normal operating temperature range, and both the air heat exchanger and the electronic cooler can be driven to quickly cool the temperature inside the casing, and the casing can be returned to the normal operating temperature. Within the scope. In other words, both of the driving air heat exchanger and the electronic cooler are limited to increase beyond the normal operating temperature range, and an efficient cooling operation can be performed.

Further, in the cooling device for a frame body configured as described above, the control unit controls to stop the driving of the fan of the air heat exchanger and the heat absorbing fan when the temperature is lower than the lower limit of the normal operating temperature range. The drive, the drive of the aforementioned cooling fan, and the heating driver of the cooling element are also good.

Usually, the temperature inside the casing is gradually increased due to the operation of the heating element. However, when the temperature falls below the lower limit of the normal operating temperature range, the driving elements may be heated abnormally to perform the stop state. The way, you can figure out the energy-saving operation and the improvement of safety.

According to the present invention, the arrangement of the heat generating body provided in the casing is not affected, and the inside of the casing can be efficiently cooled. Further, by efficiently cooling the casing, a cooling device for the casing which can prevent the liquid discharge from being generated is obtained.

Hereinafter, in one embodiment of the cooling device for a frame body according to the present invention, a specific description will be given with reference to the drawings.

Fig. 1 is a schematic view showing the overall configuration of a casing having a cooling device.

The casing 1 of the present embodiment is a box shape in which the heat insulating wall member 3 is partitioned into a substantially rectangular cross section; the internal space (hereinafter referred to as "inside") 4 is attached to the front portion 3A. The door 3A' can be opened and closed to be sealed. In the case of the interior 4, for example, a plurality of heating elements such as a data machine and a power supply unit of a communication device can be housed. In the present embodiment, a rack 5 having a plurality of shelves 5a is disposed in the interior 4 Various heat generating bodies are provided on the shed plate 5a.

In the housing 1 described above, a cooling device 10 that controls and manages the temperature inside the casing is disposed in a distributed manner. The cooling device 10 is provided with: disposed in the frame 1 The top plate portion 3B is connected to the air heat exchanger 20 inside and outside the frame, the electronic cooler 30 disposed on the back surface portion 3C and connected inside and outside the frame, and a control unit that controls the operation of the air heat exchanger 10 and the electronic cooler 20 40. In this case, the control unit 40 can be provided at any position of the casing 1. In the present embodiment, it is provided on the shelf 5a of the frame 5 of the interior 4. Further, the cooling device 10 includes a sensor S1 that measures the temperature T1 inside the casing, a sensor S2 that measures the temperature of the outside air T2, and a sensory temperature T3 that measures the cooling element of the electronic cooler 30. The temperature information detected by the sensors S1 to S3 is input to the control unit constituting the control unit 40 as described later, and becomes a trigger signal for controlling the operation of each of the driving elements.

The air heat exchanger 20 is provided with a casing 21 provided on the top plate portion 3B. The inside of the casing 21 is exhausted by a fan 22 provided inside the top plate portion 3B while being disposed in the casing 21 The fan 23 passes through the outside air 23A. In this case, the casing 21 of the present embodiment includes a flow path 21A through which the outside air 23A passes and a flow path 21B through which the internal gas 22A passes. Each of the flow paths 21A and 21B is preferably formed to be independent of the outside air. It does not mix with the internal gas, and has a structure in which heat is exchanged by the wall surface 21C of the adjacent flow path. Further, it is preferable that each of the flow paths 21A and 21B constitute a fin shape that is easy to dissipate heat.

Further, the fan 22 and the fan 23 as described above are synchronously driven by the aforementioned control unit 40.

The electronic cooler 30 includes a heat absorption side heat sink (heat dissipation fan) 31 disposed inside the library, and a heat dissipation side heat sink disposed outside the library. 33; These are the openings 3d which are formed by the mounting plate (not shown) provided in the back surface part 3C of the housing 1. In this case, the electronic cooler 30 is provided with a thermoelectric element 35 as a cooling element; the thermoelectric element 35 is disposed on the metal plate 36 and the heat absorption side heat sink (heat dissipation fan) 31 which are connected to the mounting plate via a gasket. between. Further, the heat radiation side heat sink 33 is attached to a surface opposite to the surface of the thermoelectric element 35 on which the metal plate 36 is attached. Further, the thermoelectric element 35 is combined with a heat dissipating fin; the heat dissipating fin is a product which can constitute various fin shapes, or a product using a heat pipe.

One end portion of the heat absorbing side heat sink 31 is provided with a heat absorbing fan 32 that allows the internal gas in the chamber to pass therethrough; the internal gas 32A in the chamber flows in the heat absorbing side heat sink 31 and is discharged from the other end portion. In this case, at the other end, as described above, the sensor S3 for measuring the cold air temperature T3 of the cooling element (thermoelectric element 35) is disposed. Further, on one end side of the heat-dissipating-side heat sink 33, a heat-dissipating fan 34 is disposed to discharge air trapped in the heat-dissipating-side heat sink 33, and air 34A which is cooled by the thermoelectric element 35 is discharged to the bank. outer.

The above-described cooling element 35, and the heat absorbing fan 32 and the heat radiating fan 34 are individually driven by the control unit of the control unit 40. In this case, it is preferable that the heat-absorbing fan 32 and the heat-dissipating fan 34 are disposed in the respective heat sinks 31 and 33 so that the airflow is relatively in a positional relationship; in particular, the heat-dissipating fan 34 is disposed on the heat-dissipating side on the upper side. The air in the radiator 33 is efficiently dissipated, and it is preferable to arrange the internal gas to rise from the lower end.

Further, in the above configuration, the material constituting the frame body 1 is preferably a weather resistance or strength, and the outer plate is made of stainless steel. However, there is a case where the louver or the frame material inside the casing is used, and in consideration of weight reduction, it is preferable to use aluminum. In addition, as for the material constituting the inside panel 5a (rack 5), etc., it is preferable to use stainless steel from the viewpoint of strength and dustproof. Further, as for the above-mentioned metal plate 36, it is preferable to use a copper plate from the viewpoint of heat conduction, but it is preferable to use aluminum in terms of weight increase.

Fig. 2 is a block diagram showing the configuration of a control unit that operates and controls each of the driving units of the cooling device.

The control unit 40 includes a predetermined operation program and includes a control unit 41. The control unit 41 includes a control temperature signal transmitted from each of the sensors S1 to S3 to control the driving of the air heat exchanger 20. The fans 22, 23, and the heat absorbing fan 32 of the electronic cooler 30, the heat radiating fan 34, and the cooling element (thermoelectric element) 35 function. In other words, the fans 22 and 23 of the air heat exchanger 20 are synchronously turned ON/OFF via the fan drive unit 42 including the drive circuit, and the heat absorption fan 32 and the heat dissipation fan 34 of the electronic cooler 30 are provided separately. The fan drive units 43 and 44 having the drive circuits are individually turned ON/OFF.

Further, the thermoelectric elements 35 of the present embodiment are arranged in parallel and in a plurality of systems (in FIG. 2, four systems of thermoelectric elements 35A to 35D are disclosed); the control unit 41 is a thermoelectric element for a plurality of systems. Do ON/OFF drive for each system. In other words, the thermoelectric elements 35A to 35D of the respective systems are individually heated/cooled and driven by the thermoelectric drive units 45 to 48 including the drive circuits having the polarity of the respective currents. ON/OFF drive.

Further, in the present embodiment, the cooling elements 35A to 35D which are provided in parallel in a plurality of systems are configured as a plurality of thermoelectric elements, specifically, two thermoelectric elements (35A, 35a1) in each system. (35B, 35b1), (35C, 35c1), (35D, 35d1) are connected in series. Of course, the number of systems of the thermoelectric elements or the number of the series of thermoelectric elements can be appropriately changed depending on the specifications of the cooling device and the like.

Next, a control operation method by the above-described control unit 40 will be specifically described with reference to FIG. 3.

3 shows the control of the fans 22, 23 of the air heat exchanger 20 implemented in the control unit 41 of the control unit 40, and the heat absorbing fan 32 of the electronic cooler 30, the heat radiating fan 34, and the thermoelectric element 35. The control table of the example.

When the temperature T1 in the casing rises to the first set temperature (SV2) in the normal operating temperature range R in the preset casing, the control unit 41 sets the outside air temperature T2 to be smaller than the temperature T1 in the casing (T2<T1). As a condition, the fans 22, 23 of the air heat exchanger 20 are driven (see the control table (a)). When the temperature T1 in the casing rises to the second set temperature (SV3) higher than the first set temperature (SV2), the fans 22 and 23 that drive the air heat exchanger 20 are stopped (see the control table (b). At the same time, the cold air temperature T3 of the thermoelectric element 35 is equal to or higher than the condensation determination value (SVB) set in advance as a condition (T3≧SVB), and the thermoelectric element 35 is cooled and driven (see the control table (c)).

As described above, when the internal temperature T1 rises to the first set temperature (SV2) in the normal operating temperature range R in the casing 1, it is driven. The manner in which the fans 22, 23 of the air heat exchanger 20 cool the elevated temperature in the interior. As described above, in the range where the temperature in the casing is different from the temperature of the outside air, only the air heat exchanger 20 is operated, and the operation of the electronic cooler 30 is not performed, so that energy saving can be achieved. In this case, the driving of the fans 22 and 23 is as described above, and the external gas temperature T2 < the internal gas temperature T1 is used as a condition, and when the temperature in the casing is higher than the temperature of the outside air, it is not necessary. The external air having a high temperature is introduced into the casing 1, and the temperature in the casing 1 is not suddenly increased. In other words, until the outside air temperature is lower than the inner temperature, the fans 22 and 23 that drive the air heat exchanger 20 are stopped, and as far as possible, the external heat is not moved to the inside of the casing.

Then, by stopping the driving of the fans 22 and 23, the temperature T1 in the casing rises, and when the temperature rises to the second set temperature (SV3) higher than the first set temperature (SV2), the thermoelectric element 35 is cooled and driven to be controlled. Cool the library and keep it at a certain temperature (see control table (c)). Further, when the thermoelectric element 35 is associated with the entire system failure, the driving of the fans 22, 23 takes the external gas temperature T2 < the internal gas temperature T1 as a condition and continues to drive as it is, performing the cooling in the library (see the control table). (b) ※1).

In the case where the thermoelectric element 35 is driven to be cooled, when the cold air temperature T3 of the thermoelectric element 35 is lower than a predetermined condensation determination value (SVB), it is possible to generate a portion of the heat sink side (heat radiating fan) 31. Condensation, so stop controlling the cooling drive to prevent draining in the library (see control table (c)). In other words, in the present embodiment, the portion where condensation is likely to occur is controlled to cool the temperature region where condensation does not occur (condensation) The judgment value is below), and the temperature in the library is controlled to be constant.

Further, regarding the determination of the condensation, for example, the operation controller may be determined by detecting the dew point temperature by the humidity sensor and the temperature inside the chamber. However, in the present embodiment, the condensation determination value (SVB) is set in advance, via By controlling the operation below this temperature as the dew point temperature, the control item can be simplified. Further, in the present embodiment, even if the sensor S1 detecting the temperature T1 in the casing fails, the sensor S3 for measuring the cold air temperature T3 may be substituted.

Further, the control unit 41 is controlled to maintain the driving of the fans 22 and 23 of the air heat exchanger 20 when the upper limit value (SV3 + 10 ° C) of the normal operating temperature range R is exceeded, and the electronic cooler 30 The driving of the cooling fan 32 of the driving unit, the driving of the cooling fan 34, and the cooling driving of the thermoelectric element 35 are performed.

As a result, the temperature T1 in the casing 1 rises above the normal operating temperature range R, and both the air heat exchanger 20 and the electronic cooler 30 are driven to rapidly cool the temperature inside the casing, and return the casing to the normal operating temperature range. R. In other words, both of the air heat exchanger 20 and the electronic cooler 30 are driven to restrict the temperature T1 in the casing from rising beyond the normal operating temperature range R, and an efficient cooling operation can be performed.

As described above, according to the above-described cooling device 10, the air heat exchanger 20 and the electronic cooler 30 are disposed in the casing 1 that houses the heating element, and the control unit 40 can perform the switching control operation in accordance with the preset conditions, thereby reducing the operation. The cost, while being able to efficiently cool the inside of the frame. Also, air heat In each of the most appropriate states, the exchanger 20 and the electronic cooler 30 are capable of switching either or both of the drives, and it is not necessary to integrate the integrated air heat exchanger and the electronic cooler in response to the load of the heating element. With multiple settings, the setup space in the frame can be increased, or the cost will not be high. Further, the switching control of the air heat exchanger 20 and the electronic cooler 30 is performed according to the temperature T1 in the casing, the outside air temperature T2, and the cold air temperature T3 of the thermoelectric element 35, so that an efficient cooling effect can be obtained; The cooling drive of the thermoelectric element stops the control of the cooling drive when the temperature of the cold air is lower than the condensation determination value (SVB), thereby preventing the liquid discharge from being generated in the casing.

Further, in the present embodiment, the control unit 41 controls the third set temperature (SV1) to be lower than the first set temperature (SV2) in the normal operating temperature range R. The thermoelectric element 35 is heated to be driven (see control table (d)).

In this case, even if the temperature in the casing 1 is relatively lowered in the normal operating temperature range R, the temperature in the casing 1 can be raised to a more appropriate temperature by driving the thermoelectric element 35 by heating. To maintain. In addition, the temperature in the heating operation frame by the thermoelectric element 35 does not rise (SV1-5 ° C or lower), and this does not occur in the normal operation state. Therefore, in the present embodiment, in such a situation, there is a possibility that a heating abnormality (exceeding the specification operating temperature range of the machine) may occur, and it is controlled to stop all the driving elements to improve safety. Or, if the temperature inside the library becomes (SV1-5 °C or less), the heating abnormality may be caused as a result of a certain period of time. The system 41 may also issue an abnormal alarm to the outside.

Further, it is preferable that the control unit 41 is controlled to maintain the heat absorbing fan 32 of the electronic cooler 30 in the driving state in the normal operating temperature range R. With such a configuration, in the casing 1, since the internal air is constantly circulated while the heat absorbing fan 32 is constantly driven, the temperature T1 inside the casing can be stabilized.

Further, in the normal operation temperature range R, the control unit 41 controls the heat radiation fan 34 of the electronic cooler 30 to be driven when the temperature T1 in the casing rises to the first set temperature (SV2). Here, when the thermoelectric element 35 is cooled and cooled at the second set temperature (SV3), the heat radiating fin portion of the thermoelectric element is included in the heating side (heat radiating side heat sink 33) of the thermoelectric element, even after the thermoelectric element is stopped ( The temperature inside the chamber drops to the first set temperature SV2), and the state continues to be high for a while; and the thermoelectric element 35 does not rapidly dissipate heat on the heating side, which affects the performance and life of the element, so the cooling of the thermoelectric element 35 is performed. During operation (refer to control table (e)) and before and after (refer to control table (f)), to control the cooling fan 34 in the driving state, it can be quickly dissipated on the heating side, which can prevent the temperature T1 in the casing from rising. The cooling effect is maintained, and the performance of the thermoelectric element 35 can be stabilized for a long period of time. Further, the driving of the cooling fan 34 may be controlled so as to be linked to the cooling driver of the thermoelectric element 35, or may be driven for a predetermined period of time by stopping the cooling drive of the thermoelectric element or by delaying the timer or the like.

Further, the heat absorbing fan 32 and the heat radiating fan 34 are controlled to be the same when the fans 22 and 23 of the air heat exchanger 20 are driven. The step-driven method can make the temperature inside the frame escape to the outside by heat conduction, and can stabilize the temperature inside the library.

Further, in the cooling device of the present embodiment, the thermoelectric elements 35 constituting the electronic cooler 30 are arranged in parallel and are provided in a plurality of systems. In this case, the control unit 41 controls the ON/OFF drive for each system in response to the temperature T1 in the casing. Specifically, for example, as shown in FIG. 4, the temperature T1 in the casing gradually decreases, and when the thermoelectric element 35 is heated and driven from the third set temperature (SV1), the control unit 41 is controlled to When the set temperature (SV1) starts to decrease by 2 °C, the thermoelectric element 35A is driven, and the thermoelectric element 35B is driven at a temperature of 3 °C from the third set temperature (SV1), and the third set temperature (SV1) is driven. The thermoelectric element 35C was driven to start at a time when the temperature was lowered by 4 ° C, and the thermoelectric element 35D was driven to a maximum heating state when the temperature was lowered by 5 ° C from the third set temperature (SV1). Next, when the temperature T1 in the casing is controlled by such a control, the heating drive is sequentially controlled to stop the respective systems.

In this way, the thermoelectric element is provided in a plurality of system settings, and the phased control operation is performed for each system, and the temperature fluctuation in the casing can be improved as compared with the one-time ON/OFF driving of the thermoelectric element. Degree. Further, with such a configuration, it is possible to sequentially operate each system in accordance with the load (temperature load) of the heat generating body housed in the casing 1, and it is possible to have a minimum configuration suitable for the load (the most suitable load) With proper ability to perform control operations, it is possible to reduce the operating cost and save energy. Of course, such a phased control operation, the temperature inside the frame After the rise of T1, the temperature in the casing can be implemented by cooling the thermoelectric element 35 while cooling the thermoelectric element 35 at the second set temperature (SV3).

Further, in the present embodiment, the thermoelectric elements 35A to 35D which are arranged in parallel in a plurality of systems are connected in a plurality of series, and the cooling ability and the heating ability can be improved.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made.

For example, in the above-described electronic cooler 30, the thermoelectric elements 35 are arranged in a plurality of systems, and the stepwise control operation can be carried out even in a cooling device in which the air heat exchanger 20 is not provided. In other words, in such a configuration, the cooling (heating) drive control corresponding to the load of the heat generating body can be realized, the degree of the fluctuation can be improved, and the inside of the casing can be efficiently cooled (heated). Further, in addition to the thermoelectric elements, the electronic cooler 30 may use, for example, a cooling structure of a general refrigerant circulation.

Further, in the air heat exchanger 20 described above, the internal gas 22A is not in direct contact with the outside air 23A, and the wall surface 21C of the partition is thermally exchanged by heat conduction. However, the heat exchange method can be variously modified. For example, various heat dissipation fins are provided in the casing 21. For example, a lattice fin having a laminated structure may be provided, and heat exchange may be performed by a flow path between the lattices.

Further, it is also preferable to provide a humidity-adjusting function by providing a moisture absorbent in the casing 1 by improving the airtightness of the casing 1.

1‧‧‧ frame

10‧‧‧Cooling device

20‧‧‧Air heat exchanger

22, 23‧‧‧ fans

30‧‧‧Electronic cooler

31‧‧‧heat side radiator

32‧‧‧heating fan

33‧‧‧heat side radiator

34‧‧‧ cooling fan

35‧‧‧Thermal components (peltier:device)

40‧‧‧Control unit

41‧‧‧Control Department

[Fig. 1] discloses a form of a cooling device for a frame body according to the present invention The overall outline of the state.

FIG. 2 is a block diagram showing a configuration of a control unit that controls each drive unit of the cooling device for operating the casing.

[Fig. 3] A control table showing a state in which the air heat exchanger and the electronic cooler are controlled to operate in the control unit.

Fig. 4 is a graph showing the relationship between the temperature inside the casing and the control operation of the electronic cooler.

1‧‧‧ frame

3‧‧‧Insulation wall material

3A‧‧‧ front part

3A’‧‧‧Open and close

3B‧‧‧Top Board

3C‧‧‧Back part

3d‧‧‧ openings

4‧‧‧Cune

5‧‧‧Rack

5a‧‧‧Shelf

10‧‧‧Cooling device

20‧‧‧Air heat exchanger

21‧‧‧ housing

21A, 21B‧‧‧ flow path

21C‧‧‧ wall

22, 23‧‧‧ fans

22A‧‧‧Internal gas

23A‧‧‧External gases

30‧‧‧Electronic cooler

31‧‧‧heat side radiator

32‧‧‧heating fan

32A‧‧‧Internal gas

33‧‧‧heat side radiator

34‧‧‧ cooling fan

34A‧‧‧Air

35‧‧‧Thermal components (peltier:device)

36‧‧‧Metal plates

40‧‧‧Control unit

S1~S3‧‧‧Sensor

Claims (8)

A cooling device for a frame body, comprising: an air heat exchanger, which is disposed in a frame body for accommodating the heat generating body, and can exchange heat with air outside the frame body; and the electronic cooler is exposed separately a heat-dissipating-side heat sink having a heat-absorbing fan, a heat-dissipating heat sink having a heat-dissipating fan outside the casing, and a cooling element disposed between the heat-absorbing side heat sink and the heat-dissipating heat sink; and The control unit controls a fan that drives the air heat exchanger, the heat absorbing fan, the heat radiation fan, and a cooling element according to a temperature T1 inside the casing, an outside air temperature T2, and a cooling air temperature T3 of the cooling element; The control unit is configured to drive the fan of the air heat exchanger under the condition of (T2<T1) when the temperature rises to the first set temperature within a normal operating temperature range of the preset frame. When the second set temperature is higher than the first set temperature, the fan that drives the air heat exchanger is stopped, and (T3≧SVB, SVB is used in advance) The set condensation determination value is used as a condition to cool and drive the cooling element. The cooling device for a frame according to claim 1, wherein the control unit heats and drives the cooling when falling to a third set temperature lower than the first set temperature within the normal operating temperature range element. A cooling device is used as the frame of claim 1 or 2, wherein The cooling element is arranged in parallel and is provided in a plurality of systems. The control unit performs ON/OFF driving for each system in response to the temperature T1 inside the casing. A cooling device is used for the frame of claim 3, wherein the plurality of cooling elements arranged in parallel and arranged in a plurality of systems are each connected in a plurality of series. The cooling device for a frame according to any one of claims 1 to 4, wherein the control unit maintains the heat absorbing fan in a driving state within the normal operating temperature range. The cooling device for a frame according to any one of claims 1 to 5, wherein the control unit drives the heat radiation fan when the temperature rises to the first set temperature within the normal operating temperature range. The cooling device for a frame according to any one of claims 1 to 6, wherein the control unit maintains driving of the fan of the air heat exchanger and the heat absorbing fan when the upper limit value of the normal operating temperature range is exceeded. The drive, the drive of the aforementioned cooling fan, and the cooling drive of the cooling element. The cooling device for a frame according to any one of claims 1 to 7, wherein the control unit stops the driving of the fan of the air heat exchanger when the temperature falls below a lower limit of the normal operating temperature range, The driving of the heat absorbing fan, the driving of the heat radiating fan, and the heating drive of the cooling element.