WO2016157818A1

WO2016157818A1 - Cooling device

Info

Publication number: WO2016157818A1
Application number: PCT/JP2016/001625
Authority: WO
Inventors: 智之樋口; 直之舟田; 訓央清本; 悠人増田; 将吾前田; 柴田　洋; 忍織戸
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2015-03-31
Filing date: 2016-03-22
Publication date: 2016-10-06

Abstract

Air (internal air) inside a heating-element storage box (2) is blown into a casing (11) of a cooling device (1) by an internal-air blower (35) disposed inside the heating-element storage box (2) via an indoor-air outlet (10) provided in a substantially central area, in the longitudinal direction, of an upper surface (2c) of the heating-element storage box (2). Then, the blown internal air is cooled by heat exchangers (24) disposed in an inverted V shape that is horizontally symmetrical with respect to a center line formed by an external-air partitioning plate (18) provided inside the casing (11). Thus, the cooling device (1) can suppress an increase in power consumption of an air conditioner even if the amount of heat from a heating element increases.

Description

Cooling system

The present invention relates to a cooling device for a heating element storage box that stores a heating element such as a power conditioner.

The power conditioner converts direct current used in solar power generation systems into alternating current. At the time of conversion, the power conditioner generates heat and becomes a heating element. Therefore, it is necessary to cool the power conditioner during use.

Therefore, conventionally, a cooling device for a solar power generation system has been disclosed in which a power conditioner is arranged in a switchboard and a cooling fan is provided on the upper side of the power conditioner to cool the solar power generation system (for example, see Patent Document 1).

The solar power generation system of Patent Document 1 includes an exhaust fan inside the power conditioner. Furthermore, the air conditioner which discharge | releases the heat | fever which generate | occur | produces inside a power conditioner to the exterior from a heat generating body storage box is provided. The air conditioner cools the inside of the heating element storage box provided with the power conditioner.

JP2015-46952A

However, when the external space where the power conditioner is installed is cooled by the air conditioner, the power consumption of the air conditioner increases if the heat generation amount of the heating element increases.

Therefore, the present invention provides a cooling device that can be used in combination with an air conditioner to suppress an increase in power consumption of the air conditioner even if the amount of heat generated by the heating element increases.

That is, the present invention is a cooling device that processes exhaust heat from a heating element storage box installed in the storage room with the back face close to the wall surface of the storage room, and cools the space in the storage room. The cooling device includes a casing installed on the upper surface of the heating element storage box, a heat exchanger disposed inside the casing, an outside air blower and an inner / outer partition plate, and an interior for allowing the inside air of the heating element storage box to flow into the casing. A blower. The heat exchanger includes a condenser and an evaporator that form a refrigerant cycle, and a refrigerant air pipe and a refrigerant liquid pipe that connect the condenser and the evaporator. The inner and outer partition plates form a lower inside air compartment and an upper outside air compartment, which are independent of each other inside the casing. The heating element storage box includes an indoor air outlet on the upper surface and an indoor air inlet on the front surface. The casing has an inside air outlet, an outside air inlet, and an outside air outlet. The evaporator is provided in the inside air compartment, and the condenser is provided in the outside air compartment. The indoor air blower sucks in the indoor air from the storage room via the indoor air intake port of the heating element storage box, and blows out the internal air blown out from the indoor air outlet through the evaporator in the internal air compartment of the casing into the storage room. Blow out. Further, the outside air blower sucks outside air from the outside air inlet of the outside air section of the casing, and blows out outside from the outside air outlet through the condenser to cool the storage chamber.

According to this configuration, the cooling device is installed on the upper surface of the heating element storage box in the storage chamber. Thereby, even when the emitted-heat amount of the heat generating body inside a heat generating body storage box increases, the increase in the power consumption of an air conditioner can be suppressed. As a result, it is possible to provide a cooling device that can cope with an increase in the amount of heat generated by the heating element with low power consumption.

FIG. 1 is an internal perspective view of a storage chamber in which a heating element storage box and a cooling device according to Embodiment 1 of the present invention are installed. FIG. 2 is a perspective view of the heating element storage box and the inside of the cooling device seen through. FIG. 3 is a block diagram showing a partial cross section of the cooling device. FIG. 4 is a configuration diagram of the evaporator (condenser). FIG. 5 is an internal perspective view of the storage chamber in which the heating element storage box and the cooling device according to Embodiment 2 of the present invention are installed. FIG. 6 is a perspective view of the heating element storage box and the cooling device. FIG. 7 is an exploded perspective view of the heating element storage box and the cooling device. FIG. 8A is an internal perspective view seen from diagonally above the left rear of the cooling device. FIG. 8B is an internal see-through perspective view seen from the diagonally upper right rear of the cooling device. FIG. 9 is a configuration diagram showing a cross section taken along line 9-9 of FIG. 8B. FIG. 10 is a diagram showing the flow of the inside air of the cooling device. FIG. 11 is a diagram showing a flow of outside air of the cooling device.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
Hereinafter, a schematic configuration of a cooling system for a heating element including the cooling device according to the first embodiment will be described with reference to FIG.

FIG. 1 is a diagram illustrating an example of a schematic configuration of a cooling system for a heating element including the cooling device of the present embodiment. In addition, the arrangement | positioning of each component is demonstrated according to the front, back, upper direction, lower direction, left side, and right side shown in FIG. The same applies to the subsequent drawings.

The cooling system includes, for example, a cooling device 1, a heating element storage box 2, a storage chamber 3, an air conditioner 6, and the like.

The cooling device 1 of the present embodiment is installed on the upper surface 2c of the heating element storage box 2 stored in the storage chamber 3, as shown in FIG. The heating element storage box 2 stores a heating element (not shown) such as a power conditioner.

The interior of the storage room 3 is composed of an airtight space surrounded by a floor surface 3a, a ceiling surface 3b, and four wall surfaces 3c. The storage chamber 3 includes an air conditioner 6 including an indoor unit 4 installed on the inner side and an outdoor unit 5 installed on the outer side.

The rear surface 2a of the heating element storage box 2 is installed on the inner wall surface of the wall surface 3c of the storage chamber 3 so as to be substantially parallel (including parallel).

The heating element storage box 2 includes an indoor air inlet 7 on the front surface 2b side and an indoor air outlet 10 on the upper surface 2c side. The air inside the storage chamber 3 (hereinafter referred to as “inside air”) is sucked into the heating element storage box 2 through the indoor air suction port 7 by driving of the inside air blower 35 described later, and the indoor air outlet 10 is blown out into the cooling device 1.

The cooling device 1 includes an outside air intake duct 8 and an outside air exhaust duct 9 that are installed at the top so as to protrude from the ceiling surface 3 b of the storage chamber 3. Air outside the storage chamber 3 (hereinafter referred to as “outside air”) is sucked into the cooling device 1 through the outside air intake duct 8 by driving an outside air blower 19 described later. The outside air sucked into the cooling device 1 is discharged to the outside of the storage chamber 3 through a condenser 20 and an outside air exhaust duct 9 which will be described later.

As described above, a cooling system for a heating element including the cooling device of the present embodiment is configured.

Hereinafter, the configuration of the cooling device and the heating element storage box will be described with reference to FIGS. 2 and 3.

FIG. 2 shows a perspective view of the heating element storage box 2 and the inside of the cooling device 1 according to the present embodiment. FIG. 3 is a block diagram showing a partial cross section of the cooling device.

As shown in FIG. 2, the heating element storage box 2 includes, for example, a round hole-shaped indoor air outlet 10 at a substantially central portion (including the central portion) in the longitudinal direction (left-right direction) of the upper surface 2 c. The inside air of the heating element storage box 2 is blown out from the indoor air outlet 10 to the inside of the cooling device 1 by the action of a blower (inside air blower 35) installed on the upper surface 2c of the heating element storage box 2, for example. When the inside air blower 35 is installed on the upper surface 2c, the inside air blower 35 is placed in the same space as the inside air section 16 as shown in FIG.

The cooling device 1 includes a casing 11, two heat exchangers 24 disposed inside the casing 11, an outside air blower 19, an inside / outside partition plate 15, and an outside air partition partition plate 18.

The inner / outer partition plate 15 divides the inside of the casing 11 in the vertical direction into a lower inside air compartment 16 and an upper outside air compartment 17.

The outside air partition plate 18 divides the inside of the outside air compartment 17 in the left-right direction. And the condenser 20A and the condenser 20B of the two heat exchangers 24 are arranged symmetrically with the outside air partition plate 18 as the center line. At this time, the condenser 20 </ b> A and the condenser 20 </ b> B are installed symmetrically in a “C” shape (inverted V shape) with the outside air partition plate 18 as the center line. Here, the “C shape” means a shape that inclines obliquely downward as it goes away from the center line. That is, the “C-shape” means a shape that is inclined to the lower left on the left side of the center line and a shape that is inclined to the lower right on the right side of the center line as viewed from the front of FIG.

The casing 11 includes an outside air inlet 12 connected to the outside air intake duct 8 and an outside air outlet 13 connected to the outside air exhaust duct 9 on the upper surface 11a.

Moreover, the casing 11 includes an inside air outlet 14 that communicates with the inside air section 16 and opens toward the inside of the storage chamber 3 on both sides of the front surface 11b. The inside air outlet 14 blows out the inside air flowing through the cooling device 1 into the storage chamber 3 by driving the inside air blower 35.

Next, a detailed configuration of the cooling device 1 will be described with reference to FIG.

As shown in FIG. 3, the inside of the casing 11 of the cooling device 1 is divided into a lower inside air section 16 and an upper outside air section 17 by the above-described inner and outer partition plates 15. Further, the inside of the outside air compartment 17 is divided into two right and left compartments by an outside air compartment partition plate 18.

In the outside air section 17, for example, two outside air blowers 19 arranged in the front-rear direction and a condenser 20 are installed corresponding to the outside air inlet 12. An evaporator 21 is installed inside the inside air section 16. The condenser 20 and the evaporator 21 are connected by a refrigerant air pipe 22 and a refrigerant liquid pipe 23 to constitute a heat exchanger 24.

The heat exchanger 24 forms a refrigerant cycle, that is, a thermosiphon, with the refrigerant sealed inside. The refrigerant air pipe 22 and the refrigerant liquid pipe 23 penetrate the inner / outer partition plate 15, and the penetrating portion is sealed with, for example, a gasket (not shown). Thereby, the independence (airtightness) of the inside air section 16 and the outside air section 17 in the casing 11 constituting the cooling device 1 is ensured.

Note that the condenser 20 and the evaporator 21 of the heat exchanger 24 are each configured to be stacked in, for example, three rows in the vertical direction. At this time, the refrigerant gas pipe 22 and the refrigerant liquid pipe 23 connect the uppermost rows, the middle rows, and the lowermost rows of the condenser 20 and the evaporator 21, respectively. FIG. 3 illustrates only the refrigerant air pipe 22 and the refrigerant liquid pipe 23 that connect the uppermost rows.

Next, the evaporator 21 (condenser 20) which comprises the heat exchanger 24 is demonstrated using FIG. Since the basic configurations of the evaporator 21 and the condenser 20 are the same, the evaporator 21 will be described as an example.

As shown in FIG. 4, the evaporator 21 of the heat exchanger 24 includes two headers 25, a plurality of tubes 26, and corrugated fins 27. The tubes 26 are arranged at regular intervals between the headers 26. The fins 27 are inserted between the tubes 26 and allow the inside air or outside air to flow therethrough. Then, the heat of the inside air and the outside air is transmitted to the tube 26 through the fins 27 to exchange heat with the refrigerant flowing in the tube 26. The tube 26 and the fin 27 are welded at a large number of contact portions 27a. By welding the contact portion 27a, good heat transfer between the tube 26 and the fin 27 is provided.

Next, the operation and action of the cooling device 1 will be described mainly according to the flow of inside air and outside air.

First, the flow of the inside air of the cooling device 1 will be described.

In the cooling system of the heating element configured as described above, when a heating element such as a power conditioner in the heating element storage box 2 is operated, heat is generated and the air (inside air) around the heating element is heated. At this time, the inside air blower 35 disposed on, for example, the upper surface 2c of the heating element storage box 2 is driven. Thereby, the heated inside air flows into the inside air compartment 16 of the casing 11 from the indoor air outlet 10 that opens to the upper surface 2 c of the heating element storage box 2. As described above, the indoor air outlet 10 includes the left evaporator 21A and the right evaporator 21B that constitute the two evaporators 21 arranged in a “C” shape (inverted V shape). Between.

Next, the inside air that has flowed into the inside air section 16 of the casing 11 from the indoor air outlet 10 is divided into left and right and passes between the fins 27 of the evaporator 21. Thereby, the heated inside air is heat-exchanged with the refrigerant flowing through the evaporator 21 and cooled.

Next, the inside air cooled by the evaporator 21 is blown into the storage chamber 3 from the inside air outlet 14 that opens forward on both sides of the casing 11 in the left-right direction. In FIG. 3, as an example, the flow of the internal air on the right side in the internal air section 16 of the casing 11 is indicated by a solid line arrow.

At this time, in this embodiment, the evaporator 21 is provided with the left evaporator 21A and the right evaporator 21B symmetrically. Therefore, the inside air that has flowed into the inside air section 16 of the casing 11 is distributed to the left and right substantially evenly (including evenly). Then, the inside air of substantially the same air volume (including the same air volume) passes through the left evaporator 21A and the right evaporator 21B.

The inside air blown into the storage chamber 3 is sucked from the indoor air inlet 7 that opens in the front surface 2b of the heating element storage box 2, and circulates again to cool the heating element.

In addition, as shown in FIG. 4, the inside air which flowed in from the indoor air outlet 10 passes between the corrugated fins 27 of the evaporator 21 (substantially triangular space (including the triangular space) shown in FIG. 4). At this time, the pressure loss of the inside air passing between the fins 27 is lower than that of the stacked heat exchange elements. Therefore, a separate air blower is not provided in the inside air compartment 16 of the casing 11, and the inside air blower 35 disposed on the upper surface 2 c of the heating element storage box 2 can be used as a blower.

Hereinafter, the flow of the outside air of the cooling device 1 will be described.

First, when the cooling system for the heating element configured as described above is activated, the outside air blower 19 is driven. Accordingly, as shown in FIG. 3, outside air (outside air) is sucked from the outside air inlet 12 of the casing 11 through the outside air intake duct 8 shown in FIG. 1 in the outside air compartment 17 of the casing 11. .

The sucked outside air passes between the fins 27 of the condenser 20 of the heat exchanger 24 as indicated by broken line arrows shown in FIG. Thereby, the sucked outside air is heat-exchanged with the refrigerant flowing in the condenser 20 and heated.

The outside air heated by the condenser 20 is discharged from the outside air outlet 13 of the casing 11 to the outside through the outside air exhaust duct 9.

At this time, the heat exchanger 24 operates as follows.

First, the refrigerant flowing inside the evaporator 21 evaporates from the inside air flowing in from the indoor air outlet 10 by absorbing heat. The evaporated refrigerant flows into the condenser 20 through the refrigerant trachea 22. At this time, the inside air is cooled by the endothermic action accompanying the evaporation of the refrigerant in the evaporator 21. The cooled inside air is blown into the storage chamber 3 from the inside air outlets 14 provided on the left and right sides of the inside air section 16 of the casing 11. Thereby, the inside air heated with the heat generating body can be cooled.

On the other hand, the high-temperature refrigerant flowing in the condenser 20 is cooled by heat radiation to the outside air sucked from the outside air inlet 12, and is condensed and liquefied. The liquefied refrigerant flows into the evaporator 21 again through the refrigerant liquid pipe 23. At this time, the outside air heated by heat exchange with the refrigerant in the condenser 20 passes through the outside air outlet 13 of the casing 11 and is discharged outside.

That is, in the heat exchanger 24, the refrigerant in the evaporator 21 absorbs heat from the inside air heated in the heating element storage box 2 and evaporates. The evaporated refrigerant dissipates heat to the outside air passing through the condenser 20 of the heat exchanger 24 and condenses. And the refrigerant | coolant which changes a gaseous-phase state and a liquid phase state repeatedly circulates the inside of the heat exchanger 24 by a density difference. Thereby, the thermosiphon effect | action which performs heat conveyance is implement | achieved.

As described above, in the present embodiment, the heat exchanger 24 of the cooling device 1 is arranged in a “C-shape” (inverted V-shape) symmetrically about the outside air partition plate 18 as a center line. . At this time, the evaporator 21 and the condenser 20 constituting the heat exchanger 24 are installed at an inclination angle of, for example, 20 degrees with respect to the horizontal.

With this configuration, the cooling device 1 can be installed in a limited space between the upper surface 2c of the heating element storage box 2 and the ceiling surface 3b of the storage chamber 3. That is, the height of the cooling device 1 can be designed low. Further, in the case of a power conditioner or the like that has already been operated and no heat exchanger is installed, the cooling device 1 can be easily installed by retrofitting when the amount of heat generated by the heating element increases.

At this time, the inclination angle of the evaporator 21 and the condenser 20 is preferably 15 degrees to 25 degrees. When the inclination angle is smaller than 15 degrees, the pressure loss of the air passing between the fins 27 increases. On the other hand, when the inclination angle is larger than 25 degrees, the height of the cooling device 1 is increased and the cooling device 1 is increased in size.

In the present embodiment, the configuration in which two heat exchangers 24 are provided has been described as an example, but the present invention is not limited to this. For example, the number of heat exchangers 24 may be increased or decreased according to the amount of heat generated by the heating element. When the heat generation amount of the heating element is small, a configuration in which one heat exchanger 24 is provided may be used.

In the present embodiment, the configuration in which two outside air blowers 19 are provided for one heat exchanger 24 has been described as an example, but the present invention is not limited thereto. For example, the number of outside air blowers 19 may be increased or decreased according to the amount of heat generated by the heating element. When the heat generation amount of the heating element is small, a configuration in which one outside air blower 19 is provided may be used.

Also, as described above, the two condensers 20 of the present embodiment preferably have the left condenser 20A and the right condenser 20B symmetrically provided with the outside air partitioning plate 18 as the center line. The outside air that has passed through the left condenser 20A and the outside air that has passed through the right condenser 20B are discharged from the outside air outlet 13 to the outside without interfering with each other by the outside air partitioning plate 18. Thereby, the outside air flowing into the outside air section 17 can smoothly pass between the fins 27 of the condenser 20. As a result, the heat exchange efficiency between the outside air and the refrigerant in the condenser 20 of the heat exchanger 24 can be increased.

Further, as shown in FIG. 3, the height 16 a of the inside air section 16 before the inside air blown out from the room air outlet 10 by the inside air blower 35 passes through the evaporator 21 is the inside air after passing through the evaporator 21. It is preferable that the height of the section 16 is higher than 16b. According to this configuration, the inside air hits the evaporator 21 from a wider space of the inside air section 16 toward the evaporator 21, for example, with a low pressure loss. Therefore, the heat exchange efficiency between the inside air and the refrigerant in the evaporator 21 of the heat exchanger 24 can be further increased.

Further, as shown in FIG. 3, the height 17 a of the outside air section 17 before the outside air sucked from the outside air inlet 12 by the outside air blower 19 passes through the condenser 20 is the outside air section after passing through the condenser 20. The height 17 is preferably higher than the height 17b. According to this configuration, outside air strikes favorably toward the condenser 20 from a wider space of the outside air section 17. Therefore, the heat exchange efficiency between the outside air and the refrigerant in the condenser 20 of the heat exchanger 24 can be further increased.

As described above, according to the present embodiment, the cooling device 1 is installed on the upper surface 2 c of the heating element storage box 2. Thereby, even when the calorific value of the heating element inside the heating element storage box 2 increases, the increase in the power consumption of the air conditioner can be suppressed by arranging the cooling device 1 individually. As a result, it can respond appropriately according to the increase or decrease in the amount of heat generated by the heating element.

(Embodiment 2)
Below, schematic structure of the cooling system of a heat generating body provided with the cooling device concerning this Embodiment 2 is demonstrated using FIGS. 5-7.

FIG. 5 is a diagram illustrating an example of a schematic configuration of a heating element cooling system including the cooling device according to the second embodiment. FIG. 6 is a perspective view of the heating element storage box and the cooling device.

FIG. 7 is an exploded perspective view of the heating element storage box and the cooling device.

As shown in FIGS. 5 to 7, a plurality of cooling devices 1 according to the present embodiment are installed in the upper surface 2 c of, for example, one heating element storage box 2 stored in the storage chamber 3. The heating element storage box 2 stores a heating element (not shown) such as a power conditioner.

The rear surface 2a of the heating element storage box 2 is disposed on the inner wall surface of the wall surface 3c of the storage chamber 3 so as to be substantially parallel (including parallel).

The heating element storage box 2 includes an indoor air inlet 7 on the front surface 2b side and an indoor air outlet 10 on the upper surface 2c side. Air inside the storage chamber 3 (hereinafter referred to as “inside air”) is sucked into the heating element storage box 2 through the indoor air suction port 7 by driving of an inside air blower 31 described later, 10 is blown out into the cooling device 1.

Further, as shown in FIGS. 6 and 7, a plurality of cooling devices 1 (for example, three in the present embodiment) are disposed on the upper surface 2 c of the heating element storage box 2 through the chamber 28. At this time, the cooling device 1 has a protruding portion 110 that protrudes from the front surface 2 b of the heating element storage box 2. The chamber 28 is formed with an inside air passage hole 29 corresponding to each of the plurality of cooling devices 1 arranged. Thereby, the inside air flowing into the chamber 28 from the indoor air outlet 10 of the heating element storage box 2 is distributed to the respective cooling devices 1.

Hereinafter, a detailed configuration of the cooling device of the present embodiment will be described with reference to FIGS. 8A and 8B.

FIG. 8A shows an internal perspective view seen from diagonally above the left rear of the cooling device 1. FIG. 8B shows an internal perspective view seen from diagonally above the right rear of the cooling device 1.

As shown in FIGS. 8A and 8B, the cooling device 1 includes a casing 11, a heat exchanger 24, an inside air blower 31, two outside air blowers 32, an inside / outside partition plate 15, an inside air, which are arranged inside the casing 11. It is comprised from the air blower partition plate 31a, the external air blower partition plate 32a, the external air wind path partition plate 30, the external air wind path forming plate 33, and the like.

The inside air blower partition plate 31a divides the casing 11 in the front-rear direction on the front surface 11b (see FIG. 6) side of the casing 11 to form an inside air blower chamber 31b.

The outside air blower partition plate 32a is divided in the left-right direction of the casing 11 to form an outside air blower chamber 32b on one side surface side. Thereby, the casing 11 is divided into the inside air section 16, the outside air section 17, the inside air blower chamber 31b, and the outside air blower chamber 32b.

The outside air blower chamber 32b has two outside air blowers 32 disposed therein. The two outside air blowers 32 are individually partitioned by the outside air path partition plate 30. Thereby, outside air (outside air) is discharged to the outside from the respective air passages via the two outside air blowers 32.

The inside air blower chamber 31b has at least one inside air blower 31 disposed therein.

The outside air path forming plate 33 is disposed in the outside air section 17 so as to form an air path from the outside air inlet 12 to the condenser 20. Specifically, the outside air path formation plate 33 is provided so as to cover the side surface of the condenser 20.

The casing 11 includes an outside air inlet 12 that opens upward on the back surface 2a side of the heating element storage box 2 (see FIG. 7) and communicates with the outside air compartment 17. The outside air blower chamber 32 b includes an outside air outlet 13 that opens to the back surface 2 a side of the casing 11.

Moreover, the casing 11 has the protrusion part 110 which protrudes from the front surface 2b (refer FIG. 6) of the heat generating body storage box 2. As shown in FIG. An internal air outlet 14 that opens to the lower surface of the casing 11 is formed in the protrusion 110. Thereby, the inside air heat-exchanged by the evaporator 21 of the cooling device 1 is blown out downward along the front surface 2 b of the heating element storage box 2 from the inside air outlet 14 of the protrusion 110.

Next, the operation and action of the heat exchanger 24 of the cooling device 1 will be described with reference to FIG.

FIG. 9 is a configuration diagram showing a cross section taken along line 9-9 of FIG. 8B.

As shown in FIG. 9, the inside of the casing 11 is divided into a lower inside air compartment 16 and an upper outside air compartment 17 by the inner and outer partition plates 15 described above.

A condenser 20 is installed inside the outside air section 17, and an evaporator 21 is installed inside the inside air section 16. The condenser 20 and the evaporator 21 are connected by a refrigerant air pipe 22 and a refrigerant liquid pipe 23 to constitute a heat exchanger 24.

The heat exchanger 24 forms a refrigerant cycle, that is, a thermosiphon, with the refrigerant sealed inside. The refrigerant air pipe 22 and the refrigerant liquid pipe 23 penetrate the inner and outer partition plates 15, and the penetrating portion is sealed with, for example, a gasket (not shown). Thereby, the independence (airtightness) of the inside air section 16 and the outside air section 17 in the casing 11 constituting the cooling device 1 is ensured.

Note that the condenser 20 and the evaporator 21 of the heat exchanger 24 are each configured to be stacked in, for example, three rows in the vertical direction. At this time, the refrigerant gas pipe 22 and the refrigerant liquid pipe 23 connect the uppermost rows, the middle rows, and the lowermost rows of the condenser 20 and the evaporator 21, respectively. FIG. 9 shows only the refrigerant air pipe 22 and the refrigerant liquid pipe 23 connecting the uppermost rows.

Moreover, about the evaporator 21 (condenser 20) which comprises the heat exchanger 24 of this Embodiment, since it is the same as the heat exchanger 24 demonstrated using FIG. 4 in Embodiment 1, description is abbreviate | omitted. To do.

Next, the cooling action of the cooling device 1 will be described mainly in accordance with the flow of inside air and outside air.

First, the flow of the inside air of the cooling device 1 will be described with reference to FIG.

In the cooling system of the heating element configured as described above, when a heating element such as a power conditioner in the heating element storage box 2 is operated, heat is generated and the air (inside air) around the heating element is heated. Further, the blower in the heating element storage box 2 and the inside air blower 31 in the casing 11 are driven. At this time, the heated inside air flows into the chamber 28 from the indoor air outlet 10 that opens in the upper surface 2 c of the heating element storage box 2 by being pushed by the blower and sucked by the inside air blower 31.

The inflowing inside air spreads horizontally in the chamber 28 and is rectified. The rectified inside air flows from the inside air passage holes 29 corresponding to the three cooling devices 1 while being dispersed into the inside air section 16 of the casing 11.

The inflowing inside air first passes through the evaporator 21 in the inside air section 16. Thereby, the inside air is cooled by exchanging heat with the refrigerant flowing in the evaporator 21. The cooled inside air is sucked into the inside air blower chamber 31b by the inside air blower 31 via the inside air section 16. The sucked inside air is turned 90 degrees in the inside air blower chamber 31b. And it blows off perpendicularly downward from the inside air blower outlet 14 of the inside air blower chamber 31b corresponding to the protrusion part 110 of the casing 11. In this case, the inside air blower chamber 31b functions as a chamber and rectifies the sucked inside air. Then, the rectified inside air is blown downward along the front surface 2b of the heating element storage box 2 from the inside air outlet 14 opened on the lower surface of the protrusion 110 protruding from the front surface 2b of the heating element storage box 2. FIG. 10 shows the flow of the inside air with black arrows and white arrows.

At this time, the indoor air inlet 7 of the heating element storage box 2 is provided below the front surface 2b of the heating element storage box 2. Therefore, the inside air is blown downward along the front surface 2 b of the heating element storage box 2 from the inside air outlet 14 formed on the lower surface of the projecting portion 110, and is sucked from the indoor air inlet 7. Thereby, the air cooled by the evaporator 21 of the inside air section 16 can be supplied to the indoor air inlet 7 of the heating element storage box 2 through the shortest path.

That is, even when the temperature of the air in the storage chamber 3 is slightly high, the inside air cooled by the cooling device 1 can be supplied almost directly into the heating element storage box 2 and efficiently cooled. Therefore, the set temperature of the air conditioner 6 can be increased as compared with the case where the inside air temperature is reduced only by the air conditioner 6. As a result, the power consumption of the air conditioner 6 can be suppressed and the energy saving effect can be improved.

Next, the flow of the outside air of the cooling device 1 will be described with reference to FIG.

First, when the cooling system for the heating element configured as described above is activated, the outside air blower 32 is driven. Thereby, as shown by the arrow in FIG. 11, outside air is sucked into the outside air compartment 17 from the outside air inlet 12 on the back surface of the casing 11.

The sucked outside air passes between the fins 27 of the condenser 20 of the heat exchanger 24. Thereby, the outside air is heat-exchanged with the refrigerant flowing in the condenser 20 and heated.

The outside air heated by the condenser 20 is sucked into the two outside air blowers 32 arranged in the outside air blower chamber 32b. The sucked inside air is turned 90 degrees toward the back surface of the casing 11 in the outside air blower chamber 32b. The direction-changed outside air is blown out horizontally in the rear direction, and is discharged from the outside-air outlet 13 through the wall surface 3c of the storage chamber 3 to the outside.

In the present embodiment as well, as described with reference to FIG. 4 in the first embodiment, the inside air that has been dispersed in the chamber 28 from the indoor air outlet 10 and has flowed into the inside air section 16 is removed from the evaporator 21 (condensation). Passing between the corrugated fins 27 of the container 20) (substantially triangular space (including triangular space) in FIG. 4). At this time, the pressure loss of the inside air passing between the fins 27 is lower than that of the stacked heat exchange elements. Therefore, the output of the inside air blower 31 provided in the inside air blower chamber 31b can be lowered. As a result, the energy saving effect can be further enhanced as compared with the conventional blower. In addition, since the output can be similarly reduced in the two outside air blowers 32 provided in the outside air blower chamber 32b, an energy saving operation is possible.

Here, in the present embodiment, the inside air blower 31 is constituted by one unit for the two outside air blowers 32. The reason for this is that the heating element storage box 2 includes a blower (not shown) inside. That is, the heated inside air can be caused to flow from the indoor air outlet 10 into the chamber 28 by being pushed by the blower. For this reason, even if the single air blower 31 is used, a sufficient blowing function can be obtained.

Hereinafter, the operation of the heat exchanger 24 will be specifically described.

First, the refrigerant flowing inside the evaporator 21 evaporates from the air flowing in from the indoor air outlet 10 by absorbing heat. The evaporated refrigerant flows into the condenser 20 through the refrigerant trachea 22. At this time, the inside air is cooled by the endothermic action accompanying the evaporation of the refrigerant in the evaporator 21. The cooled inside air is blown out from the inside air outlet 14 formed on the lower surface of the projecting portion 110 (corresponding to the inside air blower chamber 31b) of the casing 11 toward the indoor air inlet 7 of the heating element storage box 2. Thereby, cooling of a heat generating body can be performed efficiently.

On the other hand, the high-temperature refrigerant flowing in the condenser 20 is cooled by heat radiation to the outside air sucked from the outside air inlet 12, and is condensed and liquefied. The liquefied refrigerant flows into the evaporator 21 again through the refrigerant liquid pipe 23. At this time, the outside air heated by heat exchange with the refrigerant of the condenser 20 is discharged from the outside air outlet 13 of the casing 11 to the outside.

In the present embodiment, the outside air inlet 12 is provided on the upper side of the back side of the casing 11 shown in FIGS. 8A and 8B, and the outside air outlet 13 is provided on the back side of the outside air blower chamber 32b. And the hole (not shown) corresponding to the said external air inlet 12 and the external air outlet 13 is provided in the wall surface 3c of the storage chamber 3 which contact | connects the back surface 2a of the heat generating body storage box 2. FIG. As a result, it is possible to directly exchange outside air through the outside air inlet 12 and the outside air outlet 13. Therefore, there is no need to provide a duct or the like outside the cooling device 1. As a result, the height of the cooling device 1 can be reduced. Further, in the case of a power conditioner or the like that has already been operated and no heat exchanger is installed, the cooling device 1 can be easily installed by retrofitting when the amount of heat generated by the heating element increases.

Also in the present embodiment, as in the first embodiment, the evaporator 21 and the condenser 20 of the heat exchanger 24 are arranged to be inclined at an inclination angle of 15 degrees to 25 degrees with respect to the horizontal direction. A configuration is preferred. When the inclination angle is smaller than 15 degrees, the pressure loss of the air passing between the fins 27 increases. On the other hand, when the inclination angle is larger than 25 degrees, the height of the cooling device 1 is increased and the cooling device 1 is increased in size.

In the present embodiment, the cooling device 1 is described as an example of the configuration in which the cooling device 1 is provided on the upper surface 2c of the heating element storage box 2 via the chamber 28, but the present invention is not limited to this. The chamber 28 is effective when a plurality of cooling devices 1 are provided. Therefore, when providing one cooling device 1, it can respond by providing the leg part which extended the four side surfaces of the casing 11 below. That is, the chamber 28 becomes unnecessary by covering the indoor air outlet 10 of the heating element storage box 2 with the legs.

In the present embodiment, the configuration in which three cooling devices 1 are provided for one heating element storage box 2 has been described as an example, but the present invention is not limited thereto. For example, the number of cooling devices 1 may be increased or decreased according to the amount of heat generated by the heating element. When the heat generation amount of the heating element is small, a configuration in which one cooling device 1 is provided may be used.

In the present embodiment, the configuration in which two outside air blowers 32 are provided for one heat exchanger 24 is described as an example, but the present invention is not limited to this. For example, the number of outside air blowers 32 may be increased or decreased according to the amount of heat generated by the heating element. When the heat generation amount of the heating element is small, a configuration in which one outside air blower 32 is provided may be used.

As described above, according to the present embodiment, the cooling device 1 is installed on the upper surface 2 c of the heating element storage box 2. Thereby, even when the heat generation amount of the heating element inside the heating element storage box 2 increases, the increase in power consumption of the air conditioner is suppressed by installing a plurality of cooling devices 1 on the upper surface 2c of the heating element storage box 2. it can. As a result, it can respond appropriately according to the increase or decrease in the amount of heat generated by the heating element.

The present invention is useful as a cooling device for a heating element storage box or the like in which the calorific value changes because it can suppress an increase in power consumption of the air conditioner used in combination and cope with an increase in the calorific value.

DESCRIPTION OF SYMBOLS 1 Cooling device 2 Heating body storage box

2a Back surface

2b,

11b Front surface

2c, 11a Upper surface 3 Storage room

3a Floor surface

3b Ceiling surface 3c Wall surface 4 Indoor unit 5 Outdoor unit 6 Air conditioner 7 Indoor air intake port 8 Outside air intake duct 9 Outside air exhaust Duct 10 Indoor air outlet 11 Casing 12 Outside air inlet 13 Outside air outlet 14 Inside air outlet 15 Inside / outside partition plate 16 Inside

air compartment

16a, 16b, 17a, 17b Height 17 Outside air compartment 18 Outside air compartment plate 19

Outside air blower

20, 20A ,

20B Condenser

21, 21A, 21B Evaporator 22 Refrigerant air pipe 23 Refrigerant liquid pipe 24 Heat exchanger 25 Header 26 Tube 27 Fin 27a Contact portion 28 Chamber 29 Inside air passage hole 30 Outside air air

passage partition plate

31, 35 Inside air blower 31a Inside air Blower partition plate 31b Chamber 32 outside air blower 32a outside air blower partition plate 32b outside air blower chamber 33 outside air air path forming plate 110 protruding portions

Claims

A cooling device for treating exhaust heat from a heating element storage box installed with a back surface close to the inner wall surface of the storage chamber in the storage chamber and cooling the internal space of the storage chamber,
A casing installed on an upper surface of the heating element storage box;
A heat exchanger, an outside air blower and an inside / outside partition plate disposed inside the casing;
An internal blower for allowing the inside air of the heating element storage box to flow into the casing,
The heat exchanger includes a condenser and an evaporator that form a refrigerant cycle, and a refrigerant pipe and a refrigerant liquid pipe that connect the condenser and the evaporator.
The inner and outer partition plates are independent from each other inside the casing, forming a lower inside air compartment and an upper outside air compartment,
The heating element storage box includes an indoor air outlet on the upper surface and an indoor air inlet on the front surface,
The casing has an inside air outlet, an outside air inlet, an outside air outlet,
The evaporator is provided in the inside air compartment, and the condenser is provided in the outside air compartment,
The inside air blower sucks from the storage chamber through the indoor air suction port of the heating element storage box, and blows out the internal air blown out from the indoor air outlet through the evaporator of the inside air section of the casing. To blow out from the inside air outlet into the storage room,
The outside air blower sucks outside air from the outside air inlet of the outside air section of the casing, and blows out from the outside air outlet through the condenser.
A cooling device for cooling the storage chamber.
The casing has at least two of the heat exchangers therein, and each of the heat exchangers is partitioned by an outside air partition partition plate provided at a central portion in the longitudinal direction of the casing of the outside air compartment, Each of the partitioned outside air compartments includes one or more outside air blowers,
2. The cooling device according to claim 1, wherein each of the heat exchangers is disposed so as to be symmetrical in a C shape (inverted V shape) symmetrically about the outside air partition plate as a center line.
The cooling device according to claim 1, wherein a height of the inside air compartment before the inside air flowing through the inside air compartment passes through the evaporator is higher than a height of the inside air compartment after passing through the evaporator. .
2. The cooling device according to claim 1, wherein a height of the outside air section before the outside air flowing through the outside air section passes through the condenser is higher than a height of the outside air section after passing through the condenser. .
The cooling device according to claim 2, wherein an inclination angle of the heat exchanger arranged to be inclined in the C shape (inverted V shape) is 15 degrees to 25 degrees with respect to a horizontal direction.
The cooling device according to claim 1, wherein the inside air blower is disposed on an upper surface of the heating element storage box.
The casing includes an inside air blower partition plate that forms an inside air blower chamber that houses the inside air blower on the front side, and an outside air blower partition plate that forms an outside air blower chamber that houses the outside air blower on the side surface side,
The inside air suction port is provided on the lower surface side of the inside air section of the casing, and the inside air outlet is provided on the lower surface side of the inside air blower chamber,
The cooling device according to claim 1, wherein the outside air inlet is provided on a back side of the outside air section of the casing, and the outside air outlet is provided on a back side of the outside air blower chamber.
The casing includes a protruding portion that protrudes from the front surface of the heating element storage portion into the storage chamber,
The cooling device according to claim 7, wherein the inside air outlet is disposed on a lower surface side of the protruding portion.
The cooling device according to claim 7, wherein a chamber for allowing the inside air to flow is disposed between the casing and the heating element storage box.
A plurality of the casings are disposed on the upper surface of the heating element storage box,
The cooling device according to claim 9, wherein the chamber has an inside air passage hole corresponding to each of the plurality of casings.