JP4607218B2 - Heating element storage box cooling device and control method thereof - Google Patents

Description

  The present invention is a box structure that is installed outdoors, has a limited space for installing a cooling device, has a heating element inside, has a large amount of heat generation, and requires cooling even in winter, The present invention relates to a box having a precise control board in which temperature, humidity, dust and the like affect the performance and life of an electronic component, and more particularly to a cooling device and a control method thereof.

  In recent years, higher performance of electronic components and higher density of electronic components with respect to the control board have progressed, and the amount of heat generated from the control board has increased dramatically. Along with this, the temperature in the box tends to rise, and the operation guarantee and product life of the electronic components on the control board are greatly affected by the temperature in the box. For this reason, it is impossible to ensure reliability unless the temperature in the box is cooled below a certain level.

  In addition, it has become an important factor to remove moisture and dust in the air in the box by refining electronic components.

  Conventionally, when cooling this type of box, there is a method of installing an indoor unit in the box and connecting it to an outdoor unit outside the box with a refrigerant pipe, and the one shown in FIG. It was.

  Hereinafter, the heating element storage box cooling device will be described with reference to FIG.

  As shown in the figure, inside the box 101 are a control board 102 that generates a thermal load, an indoor unit 103, a temperature sensor 104 that detects the air temperature inside the box 101 and sends a signal to the indoor unit 103, A power source 105 is installed.

  An outdoor unit 106 is installed outside the box 101 and is connected to the indoor unit 103 through a refrigerant pipe 107.

  In the above configuration, when the control board 102 is operated, the temperature inside the box 101 gradually increases due to the heat generation.

  Therefore, when the temperature detected by the temperature sensor 104 exceeds the set temperature, an operation signal is generated and the indoor unit 103 starts to operate, the temperature inside the box 101 decreases, and the temperature detected by the temperature sensor 104 is When the temperature falls below the set temperature, a stop signal is generated and the indoor unit 103 stops.

  While the above operation was repeated, the temperature inside the box 101 was maintained within a certain range.

  In such a conventional heating element storage box cooling device, since the surroundings are sealed with a heat insulating material, there is no heat dissipation, so even if the outside air temperature is low such as in winter, the cooling device must be operated without fail. The cooling energy is consumed.

  The present invention solves such a conventional problem, and by installing a cooling device on the panel of the heating element storage box, heat exchange is performed between the outside air and the air in the box when the outside air temperature is low. Since the air in the box is cooled, the operation time of the existing cooling device is reduced, which saves energy.

  Moreover, since it is externally attached to the panel, it does not take up space in the heating element storage box, and the construction for the existing heating element storage box is easy.

  An object of the present invention is to provide such a heat generating body storage box cooling apparatus with energy saving and good workability.

One means of the heating element storage box cooling device in the present invention for solving the above problems is provided with an outside air side fan, an inside air side fan, and a heat exchange element inside the box body. An outside air inlet and an inside air outlet that communicate with the heating element storage box, an outside air inlet and an outside air outlet that communicate with the outside air, and the outside air fan and the inside air fan are provided on the same rotating shaft. The rotation axis is arranged so as to be parallel to the stacking direction of the heat exchange elements and orthogonal to the direction of blowing out the inside air.

  And according to this invention, the box of a heat generating body storage box cooling device can be made thin and small by the said means, and construction also becomes easy.

  As described above, according to the present invention, the box of the heating element storage box cooling device is made thin and small by an arrangement configuration in which the rotation axis of the blower is parallel to the stacking direction of the heat exchange elements and perpendicular to the direction of blowing out the inside air. Therefore, the construction for installing the cooling device becomes easy.

  In addition, it has an air cooler that auxiliary cools the heating element storage box when the outside air temperature is high, so it can save energy when the outside air temperature is low, and can respond to an increase in the amount of cooling required when the outside air temperature is high. Can do.

  In addition, the shape of the inside air suction port and the inside air outlet is a round hole and is arranged in the box of the heating element storage box cooling device. When the heating element storage box cooling device is installed, an opening is formed in the box panel. It has the effect | action that the process which provides this becomes easy.

  In addition, flanges are provided at the inside air inlet and the inside air outlet, so that airtightness can be ensured by easy construction even when the panel of the heating element storage box is thick.

  Further, since the heat transfer plate of the heat exchange element is made impermeable to moisture, there is an effect that the adverse effect of moisture due to dew condensation on the equipment inside the heating element storage box does not occur.

  In addition, when the outside air temperature is low, the operation of the air cooler is stopped and heat exchange is performed, and when the outside air temperature is high, the air cooler is operated without heat exchange. By avoiding unnecessary operation of the refrigerator, energy saving can be realized.

According to the first aspect of the present invention, an outside air side fan, an inside air side fan, and a heat exchange element are provided inside the box body , and the box body has an inside air suction port communicating with the heating element storage box. And an outside air inlet and an outside air outlet communicating with outside air, the outside air fan and the inside air fan
Are provided on the same rotating shaft, and this rotating shaft is a heating element storage box cooling device arranged so as to be parallel to the stacking direction of the heat exchange elements and perpendicular to the direction of blowing out the inside air. Since the box body of the heating element storage box cooling device is made thin and small, it has an effect that the construction when installing the cooling device can be easily performed.

  Another invention is equipped with an air cooler for auxiliary cooling of the heating element storage box when the outside air temperature is high. When the outside air temperature is low, it is necessary to cool the outside air temperature while performing energy saving operation. It has an effect that it can cope with an increase in the amount.

  In addition, another invention is that the shape of the inside air inlet and the inside air outlet is a round hole and is arranged in the box of the heating element storage box cooling device. This has the effect that the process of providing the opening in the panel becomes easy.

  Another invention has an effect that airtightness can be ensured by easy construction even when the inside air inlet and the inside air outlet are provided with flanges and the panel of the heating element storage box is thick.

  In another invention, the heat transfer plate of the heat exchange element is impermeable to moisture, so that moisture contained in the outside air does not enter the inside of the heating element storage box, and dew condensation on the equipment inside the heating element storage box is achieved. It has the effect that the adverse effect of moisture due to the above does not occur.

  In another invention, when the outside air temperature is low, the operation of the air cooler is stopped and heat exchange is performed, and when the outside air temperature is high, the air cooler is operated without heat exchange. It has the effect of saving energy by avoiding unnecessary energy consumption and unnecessary refrigerator operation.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

Example 1
FIG. 1 and FIG. 2 show Example 1 which can be said to be a basic configuration of a heating element storage box cooling device in the present invention.

  The box 1 of the heating element storage box cooling device is attached to the outer shell of the panel of the heating element storage box, and is configured by so-called “external attachment”.

  The internal configuration will be described below.

  The air in the heating element storage box (hereinafter referred to as “inside air”) is taken into the inside air side fan 3A of the blower 3 from the inside air suction port 2 and then passes through the heat exchange element 4 and then the heating element storage box. An inside air passage 5 is formed to circulate back inside.

  On the other hand, outside air is taken in from the outside air inlet 6, and an outside air air passage 9 is formed through the heat exchange element 4, the outside air fan 3 </ b> B of the blower, and the outside air outlet 8 to be discharged to the outside air.

  A partition plate 10 is provided for partitioning the air paths in a substantially airtight manner so that these two air paths are independent, and the sensible heat of the outside air and the inside air is exchanged at the intersection of the outside air path 9 and the inside air path 5. A heat exchange element 4 is arranged.

  With the above configuration, the heating element storage box cooling device takes in outside air when the outside air temperature is low, exchanges heat with the warm air inside the heating element storage box, and exhausts the warm outside air. Then, cool air is supplied into the box.

  As a result, the operation of the existing cooling device can be minimized and the temperature in the box can be lowered, and energy can be saved.

  In addition, since the outside air air passage 9 and the inside air air passage 5 are independent by the partition plate 10, the outside air and the air inside the heating element storage box are not mixed, so that dust contained in the outside air is contained in the heating element storage box. There is no contamination, and no adverse effects due to dust on the equipment inside the heating element storage box occur.

  As shown in FIG. 2, an inside air inlet 2 and an inside air outlet 11 communicated with the heating element storage box are provided on one surface of the wall of the box body 1 forming the heating element storage box cooling device, and outside air is provided on the other surface. The outside air inlet 6 and the outside air outlet 8 provided in communication are provided. The blower and the heat exchange element 4 are provided in the box 1, and the rotary shaft 3 </ b> C of the blower 3 is disposed in the longitudinal direction of the heat exchange element 4 (lamination Direction) and perpendicular to the blowing direction of the inside air.

  From the above arrangement, cold outside air is sucked in from the outside air inlet 6 below the heating element storage box cooling device, and blown out from the outside air outlet 8 provided above via the heat exchange element 4 and the outside air side fan 3B of the blower 3, Heated air from the heating element storage box is sucked in from the upper inside air suction port 2, and heat exchange between the inside air and the outside air is performed from the inside air outlet 11 provided below through the heat exchange element 4 and the inside air side fan 3 A of the blower 3. Can be blown out while performing.

  Moreover, the longitudinal direction of the rotating shaft 3C and the heat exchange element 4 of the blower 3 can be set to the horizontal direction, and the blower 3 and the heat exchange element can be arranged at the center of the box 1 of the heating element storage box cooling device. Thereby, heat exchange can be performed in a space-efficient manner, and since the box 1 of the heating element storage box cooling device is made thin and small, it is possible to facilitate the installation when installing the cooling device.

(Example 2)
FIG. 3 shows a second embodiment of the heating element storage box cooling device according to the present invention.

  In this embodiment, in addition to the above-described embodiment, an air cooler 12 for auxiliary cooling the heating element storage box when the outside air temperature is high is provided.

  When the outside air temperature is high, such as in summer, the operation is stopped while restricting the heat exchange by the heat exchange element 4, while the air cooler 12 is operated to auxiliary cool the heating element storage box.

  Accordingly, it is possible to cope with an increase in the amount of cooling required when the outside air temperature is high while performing energy saving operation when the outside air temperature is low.

  In the present embodiment, the explanation of auxiliary cooling is used. However, in the intermediate period or the like, there is a case where the main cooling is performed instead of the auxiliary, and the main cooling can be performed when the heat generation amount of the heating element storage box is not so high. Needless to say.

(Example 3)
FIG. 4 shows a third embodiment of the heating element storage box cooling device according to the present invention.

  The inside air inlet 2 and the inside air outlet 11 have round holes and are arranged in the box 1 of the heating element storage box cooling device.

  Generally, the outer shell of the heating element storage box has an aluminum honeycomb structure or a heat insulating material sandwich structure made of aluminum, and can be processed using a relatively simple tool.

  In this embodiment, in addition to the above embodiments, the hole shapes of the inside air inlet 2 and the inside air outlet 11 are circular. As a result, when the heating element storage box cooling device is installed, an opening is formed in the box panel. It becomes very easy to perform the processing.

Example 4
FIG. 5 shows a fourth embodiment of the heating element storage box cooling device according to the present invention.

  In this embodiment, in addition to the configuration of the above embodiment, a flange 13 is provided at the inside air inlet 2 and the inside air outlet 11.

  Thereby, even when the exterior panel which forms a heat generating body storage box is thick, airtightness can be ensured by easy construction.

(Example 5)
The heat transfer plate of the heat exchange element 4 was made non-moisture permeable (not shown).

  This prevents moisture contained in the outside air from entering the inside of the heating element storage box and prevents the moisture from being adversely affected by condensation on the equipment inside the heating element storage box.

(Example 6)
FIG. 6 shows a sixth embodiment of the heating element storage box cooling device according to the present invention.

  By measuring the outside air temperature, when the outside air temperature is low, the operation of the air cooler 12 is stopped and heat exchange is performed.

  When the outside air temperature is high, the air cooler 12 is operated without heat exchange.

  By performing such control, it is possible to save energy by avoiding unnecessary energy consumption due to heat exchange and unnecessary operation of the air cooler 12.

Schematic sectional view showing the structure of the heating element storage box cooling device according to the first embodiment of the present invention The see-through | perspective structure figure which showed the heat generating body storage box cooling device of the Example 1 FIG. 6 is a perspective structural view showing the heating element storage box cooling device of the second embodiment. The perspective structure figure which showed the heat generating body storage box cooling device of the Example 3 The perspective structure figure which showed the heat generating body storage box cooling device of Example 4 The figure which showed the control flow of the heat generating body storage box cooling device of the Example 6 Schematic sectional view showing the structure of a conventional heating element storage box cooling device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Box body 2 Inside air inlet 3 Blower 3A Inside air side fan 3B Outside air side fan 3C Rotating shaft 4 Heat exchange element 5 Inside air path 6 Outside air inlet 8 Outside air outlet 9 Outside air path 10 Partition plate 11 Inside air outlet 12 Air cooling Machine 13 Flange

Claims (6)

An outside air fan, an inside air fan, and a heat exchange element are provided inside the box,
In this box, an inside air inlet port, an inside air outlet port that communicates with the heating element storage box,
It is equipped with an outside air inlet and an outside air outlet that communicate with the outside air.
The outside air side fan and the inside air side fan are provided on the same rotating shaft,
The rotation axis is the heating element housing box cooling apparatus arranged so as to be perpendicular to the parallel and inside air outlet direction and stacking direction of the heat exchange element. The heating element storage box cooling device according to claim 1, further comprising an air cooler for auxiliary cooling of the heating element storage box when the outside air temperature is high. The heating element storage box cooling device according to claim 1 or 2, wherein the shapes of the inside air suction port and the inside air outlet are round holes and arranged in a box of the heating element storage box cooling device. The heating element storage box cooling device according to claim 3, wherein flanges are provided at the inside air inlet and the inside air outlet. The heat generating body storage box cooling device according to any one of claims 1 to 4, wherein the heat transfer plate of the heat exchange element is impermeable to moisture. The method of controlling a heating element storage box cooling device according to claim 2, wherein the cooling device installed on the panel of the heating element storage box is controlled to start and stop according to the outside air temperature.

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