JP5730701B2 - Power conditioner device and photovoltaic power generation system - Google Patents

Description

  The present invention relates to a power conditioner device and a photovoltaic power generation system.

  In addition to the solar battery, the solar power generation system uses a power conditioner device that converts DC power generated by the solar battery into AC power (DC / AC conversion). This power conditioner device is assumed to be used in a state of being attached to a predetermined attachment surface (a wall of a house, an inner surface of a storage box, etc.).

  Patent Document 1 discloses a power conversion device that secures a necessary air volume in each power conversion unit by minimizing the number of fans in a power conversion panel in which a plurality of power conversion units are stored.

JP 2011-15454 A

  In the case of a wall-mounted power conditioner device, the air exhausted from the exhaust port of the power conditioner device circulates to the intake port and is sucked again into the power conditioner device, increasing the internal temperature of the power conditioner device. There is a risk.

  This will be described in detail with reference to FIG. FIG. 6 shows a perspective view of a conventional power conditioner device viewed from the back side. As shown in FIG. 6, doors 83 are provided on the front surface of the housing 80, while fixing members for attaching the power conditioner device to attachment surfaces such as walls are provided at the four corners of the back surface portion 81 of the housing 80. 84 is provided.

  In this power conditioner device, an internal intake port (not shown) is provided in the back surface portion 81 of the casing 80, and a cover box portion 85 is attached so as to cover the internal intake port. On the lower surface of the cover box portion 85, an air inlet 91 for taking in external air from below is provided. The air sucked into the cover box portion 85 from the air inlet 91 is taken into the housing 80 through the internal air inlet of the back surface portion 81. Further, the air that has passed through the housing 80 is exhausted from an exhaust port 92 provided in the bottom surface portion 82 of the housing 80.

  Thus, in the conventional power conditioner device, the intake port 91 and the exhaust port 92 are both provided in the same downward direction. For this reason, in a state where the power conditioner device is attached to the attachment surface, a part of the air exhausted from the exhaust port 92 reaches the intake port 91 through the attachment surface, as indicated by an arrow in FIG. That is, an air channel that circulates between the exhaust port 92 and the intake port 91 is easily formed. As a result, there is a problem that the air exhausted from the exhaust port 92 is re-sucked into the intake port 91, the cooling efficiency is lowered, and the internal temperature of the power conditioner device is increased.

  As another problem, there is a problem that the space between the normal casing 80 and the mounting surface is narrow, and the intake port 91 provided on the back side of the casing 80 cannot secure a sufficient intake air volume. .

  Therefore, an object of the present invention is to provide a power conditioner device that can prevent air exhausted from an exhaust port from flowing into the intake port and can secure a sufficient intake air volume.

A power conditioner device according to one aspect of the present invention is provided.
A power conditioner device attached to a mounting surface,
An electrical device that converts DC power into AC power is installed therein, and has a back surface facing the mounting surface, and a housing;
An internal air inlet provided on the back surface of the housing and for sucking air into the housing from the outside;
A cover box provided on the back surface of the housing so as to cover the internal air inlet;
An intake port that is provided on a side surface of the cover box portion and sucks air taken into the housing through the internal intake port; and
An exhaust port that is provided on the bottom surface of the housing and exhausts air sucked from the intake port to the outside of the housing;
It is characterized by providing.

In the power conditioner device,
You may further provide the wind direction change member which is provided in the said exhaust port and changes the blowing direction of the air exhausted from the said exhaust port.

In the power conditioner device,
The wind direction changing member may include a frame portion that fits into the exhaust port, and a wind direction plate that is fixed to the frame portion and provided in parallel to the back surface portion of the housing. .

In the power conditioner device,
The wind direction changing member may change a blowing direction of air exhausted from the inside of the housing to the front side of the housing.

In the power conditioner device,
You may further provide the auxiliary | assistant inlet port which inhales air from the lower part of the said cover box part in the bottom face part of the said cover box part.

In the power conditioner device,
The side surface portion of the cover box portion may be provided so as to obliquely intersect with the back surface portion of the housing.

A power conditioner device according to one aspect of the present invention is provided.
A power conditioner device attached to a mounting surface,
An electrical device that converts DC power into AC power is installed therein, and has a back surface facing the mounting surface, and a housing;
An intake port that is provided on a side surface of the housing and sucks air into the interior from the outside of the housing;
An exhaust port that is provided on the bottom surface of the housing and exhausts air sucked from the intake port to the outside of the housing;
It is characterized by providing.

In the power conditioner device,
You may further provide the wind direction change member which is provided in the said exhaust port and changes the blowing direction of the air exhausted from the said exhaust port.

In the power conditioner device,
The wind direction changing member may include a frame portion that fits into the exhaust port, and a wind direction plate that is fixed to the frame portion and provided in parallel to the back surface portion of the housing. .

In the power conditioner device,
The wind direction changing member may change a blowing direction of air exhausted from the inside of the housing to the front side of the housing.

A photovoltaic power generation system according to one embodiment of the present invention is provided.
A power conditioner device according to the invention;
A solar cell for supplying direct current power to the power conditioner device;
A transformer device that transforms AC power supplied from the power conditioner device;
It is characterized by providing.

  A power conditioner device according to an aspect of the present invention includes a housing having a back surface portion facing the mounting surface, and a cover box portion that covers an internal air inlet provided in the back surface portion of the housing. And an air inlet is provided in the side part of a cover box part, and an exhaust port is provided in the bottom face part of a housing | casing. According to such a configuration, intake is performed from the side surface of the housing, while exhaust is performed from the bottom surface of the housing. For this reason, it is suppressed that the air exhausted from the exhaust port which connected the attachment surface, such as a wall, is again sucked into the housing through the intake port.

  In other words, according to the present invention, since the intake direction and the exhaust direction are different, it is difficult to form an air channel connecting the exhaust port and the intake port, and therefore, the exhausted air is prevented from flowing into the intake port. Is done. As a result, an increase in the internal temperature of the power conditioner device can be prevented.

  Furthermore, since the intake port is provided on the side surface portion of the cover box portion, a sufficient intake air volume can be secured in a state where the power conditioner device is attached to the attachment surface.

(A) is the perspective view which looked at the power conditioner apparatus which concerns on embodiment of this invention attached to the attachment surface from the front side, (b) is a back view of the power conditioner apparatus which concerns on embodiment of this invention It is the perspective view seen from the side. It is the perspective view seen from the back side of the power conditioner device concerning the embodiment of the present invention in the state where the cover box part was removed. It is a figure which shows an example of a wind direction change member, (a) is a top view of a wind direction change member, (b) is a lower side view of a wind direction change member, (c) is a side view of a wind direction change member. . It is the perspective view seen from the back side of the power conditioner device which concerns on the modification of embodiment by this invention. It is a schematic block diagram of a solar power generation system. It is the perspective view which looked at the power conditioner apparatus by a prior art from the back side.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, in each figure, the component which has an equivalent function is attached | subjected the same code | symbol, and detailed description of the component of the same code | symbol is not repeated.

(Solar power system)
First, the configuration of a photovoltaic power generation system including a power conditioner device will be described with reference to FIG. As shown in FIG. 5, the photovoltaic power generation system 500 includes a power conditioner device 100, a solar battery 200 that supplies DC power (for example, DC 200 to 500 V) to the power conditioner device 100, and a transformer device 300. . The power conditioner apparatus 100 converts the DC voltage supplied from the solar cell 200 into a three-phase AC (for example, 200 V) and outputs the converted voltage. This AC power is transformed to a high voltage (for example, 6600 V) by a transformer 300 connected to the output terminal of the power conditioner device 100 and supplied to the commercial power distribution network.

(Power conditioner device)
Next, the power conditioner device 100 according to the embodiment of the present invention will be described in detail. FIG. 1 shows a perspective view of a power conditioner device 100 according to an embodiment of the present invention. 1A is a perspective view of the power conditioner device 100 attached to the attachment surface 1 as seen from the front side, and FIG. 1B is a perspective view of the power conditioner device 100 as seen from the back side. It is.

  As shown in FIG. 1A, the power conditioner device 100 is a wall-mounted type that is attached to a mounting surface 1 such as a wall of a house or an inner surface of a storage box by fixing brackets 40 provided at four corners of the housing. It is a power conditioner device. A door 15 for accessing an electric device (for example, a DC-AC converter that converts direct current power into alternating current power) installed in the housing 10 is provided on the front surface of the housing 10. The door 15 is provided with an opening / closing lever 15a for opening and closing the door 15.

  As shown in FIGS. 1A and 1B, the power conditioner device 100 includes a substantially rectangular parallelepiped housing 10 having a back surface portion 11 and a bottom surface portion 12, and a cover box portion 20 provided on the back surface portion 11. And an air inlet 21 a provided in the side surface portion 21 of the cover box portion 20 and an air outlet 12 a provided in the bottom surface portion 12 of the housing 10.

  The exhaust port 12 a is provided in the bottom surface portion 12, and exhausts air that has been sucked in from the intake port 21 a and has cooled the electrical equipment and the like in the housing 10 to the outside of the housing 10.

  In addition, in the state where the power conditioner device 100 is attached to the attachment surface 1, the back surface portion 11 is a surface facing the attachment surface 1. The bottom surface portion 12 is a surface adjacent to the back surface portion 11 in the vertical direction.

  FIG. 2 is a perspective view of the power conditioner device 100 as viewed from the back side in a state where the cover box portion 20 is removed. As shown in FIG. 2, the back surface portion 11 of the housing 10 has an internal air intake port 11 a for taking in external air sucked through the air intake port 21 a of the cover box portion 20 into the housing 10. Is provided. As described above, the internal air inlet 11 a is provided in the back surface portion 11 of the housing 10 and sucks air into the inside from the outside of the housing 10.

  The cover box part 20 is provided in the back surface part 11 of the housing | casing 10 so that said internal inlet port 11a may be covered. The air inlet 21a of the cover box unit 20 sucks air taken into the housing 10 through the internal air inlet 11a. As shown by the arrows in FIGS. 1A and 1B, the air inlet 21 a takes in outside air from the side surface direction of the housing 10.

  As described above, the intake port 21 a is provided on the side surface of the cover box portion 20, and the exhaust port 12 a is provided on the bottom surface of the housing 10. For this reason, intake is performed from the lateral direction via the intake port 21a, while exhaust is performed downward from the exhaust port 12a. Thus, since the intake direction and the exhaust direction are different, it is difficult to form an air channel connecting the exhaust port 12a and the intake port 21a. Therefore, according to the present embodiment, it is possible to suppress the air exhausted from the exhaust port 12a from flowing into the intake port 21a. As a result, an increase in the internal temperature of the power conditioner device 100 can be prevented.

  Furthermore, according to the present embodiment, since intake is performed from the side surface of the housing, the space between the housing 10 and the mounting surface 1 is narrow as in a conventional power conditioner device in which an intake port is provided on the back surface. A sufficient intake air volume can be secured without limiting the intake air flow rate due to space.

  In addition, the side part 21 of the cover box part 20 is provided so that it may cross with the back part 11 of the housing | casing 10, as shown to Fig.1 (a) and (b). That is, the shape of the cover box portion 20 viewed from the bottom surface portion 12 side of the power conditioner device 100 is a trapezoid. Thereby, compared with the case where the side part of a cover box part is orthogonal to the back part of a housing | casing like the conventional power conditioner apparatus (refer FIG. 6), the area of the side part 21 (intake port 21a) increases. Therefore, the intake air volume can be further increased.

  The power conditioner device 100 further includes a wind direction changing member 30 that is provided at the exhaust port 12a and changes the blowing direction of the air exhausted from the exhaust port 12a. As shown in FIG. 1B, the wind direction changing member 30 is fixed to the bottom surface portion 12 of the housing 10 with screws or the like, and the blowing direction of the air exhausted from the inside of the housing 10 is set in the housing 10. Change to the front side. Thereby, since the air exhausted from the exhaust port 12a and rising through the attachment surface 1 is reduced, it is possible to further suppress the air exhausted from the exhaust port 12a from flowing into the intake port 21a.

  The configuration of an example of the wind direction changing member 30 will be described with reference to FIG. 3A shows a top view of the wind direction changing member 30, FIG. 3B shows a lower side view of the wind direction changing member 30, and FIG. 3C shows a side view of the wind direction changing member 30. .

  The wind direction changing member 30 vertically intersects at the frame portion 31 fitted to the exhaust port 12 a, four wind direction plates 32 fixed to the frame portion 31, and the central portion of the wind direction plate 32, and supports the wind direction plate 32. And a support plate 33. The wind direction plate 32 is provided in parallel to the back surface portion 11 of the housing 10. Further, as shown in FIG. 3C, the wind direction plate 32 has a frame portion 31 so that the wind direction changing member 30 changes the blowing direction of the air exhausted from the inside of the case 10 to the front side of the case 10. It is provided so as to cross obliquely.

  As described above, by using the wind direction changing member 30, the air exhausted from the housing 10 hardly goes up to the back surface of the housing 10 through the attachment surface 1. As shown, an auxiliary intake port 22a for sucking outside air may be provided on the bottom surface portion 22 of the cover box portion 20. Thereby, the intake flow rate can be further increased.

(Modification)
In the above embodiment, the intake port is provided in the side surface portion of the cover box portion, but the intake port may be provided directly in the side surface portion of the housing 10 without providing the cover box portion.

  FIG. 4 shows a perspective view of the power conditioner device 100A according to this modification as seen from the back side. As shown in FIG. 4, in the power conditioner device 100 </ b> A, an air inlet 13 a that sucks air from the outside to the inside of the housing 10 is provided in the side surface portion 13 of the housing 10.

  That is, the power conditioner device 100A according to the present modification is provided with the housing 10, the air inlet 13a provided in the side surface portion 13, the bottom surface portion 12 of the housing 10, and the air is sucked from the air inlet 13a. And an exhaust port 12a for exhausting air out of the housing 10. The side surface portion 13 is a surface adjacent to the back surface portion 11 of the housing 10 in the horizontal direction, and the bottom surface portion 12 is a surface adjacent to the back surface portion 11 of the housing 10 in the vertical direction.

  In addition, the power conditioner device 100 </ b> A may further include the above-described wind direction changing member 30, similarly to the power conditioner device 100.

  According to the present modification, similarly to the above-described power conditioner device 100, the air exhausted from the exhaust port 12a is prevented from flowing into the intake port 13a of the side surface portion 13 of the housing 10 and being re-intaked. The As a result, an increase in the internal temperature of the power conditioner device can be prevented. Furthermore, since intake is performed from the side surface of the power conditioner device 100A, a sufficient intake air volume can be ensured.

  Based on the above description, those skilled in the art may be able to conceive additional effects and various modifications of the present invention, but the aspects of the present invention are not limited to the individual embodiments described above. . You may combine suitably the component covering different embodiment. Various additions, modifications, and partial deletions can be made without departing from the concept and spirit of the present invention derived from the contents defined in the claims and equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Attachment surface 10 Housing | casing 11 Back surface part 11a Internal inlet 12 Bottom surface 12a Exhaust port 13 Side surface 15 Door 15a Opening / closing lever 20 Cover box part 21 Side surface 21a Inlet 22 Bottom 22a Auxiliary inlet 30 Wind direction change member 31 Frame Portion 32 Wind direction plate 33 Support plate 40 Fixing bracket 80 Housing 81 Back surface portion 82 Bottom surface portion 83 Door 84 Fixing member 85 Cover box portion 91 Air inlet 92 Air outlet 100, 100A Power conditioner device 200 Solar cell 300 Transformer device 500 Solar light Power generation system

Claims (6)

A power conditioner device attached to a mounting surface,
An electrical device that converts DC power into AC power is installed therein, and has a back surface facing the mounting surface, and a housing;
An internal air inlet provided on the back surface of the housing and for sucking air into the housing from the outside;
A cover box provided on the back surface of the housing so as to cover the internal air inlet;
An intake port that is provided on a side surface of the cover box portion and sucks air taken into the housing through the internal intake port; and
An exhaust port that is provided on the bottom surface of the housing and exhausts air sucked from the intake port to the outside of the housing;
Auxiliary air inlets for sucking air from below the cover box part on the bottom part of the cover box part,
A power conditioner device comprising:   The power conditioner device according to claim 1, further comprising a wind direction changing member that is provided at the exhaust port and changes a blowing direction of air exhausted from the exhaust port.   The wind direction changing member includes a frame portion that fits into the exhaust port, and a wind direction plate that is fixed to the frame portion and provided in parallel to the back surface portion of the housing. The power conditioner device according to claim 2.   4. The power conditioner device according to claim 2, wherein the wind direction changing member changes a blowing direction of air exhausted from the inside of the housing to a front side of the housing. 5. It said side portions of said cover box portion, a power conditioner device according to any one of claims 1 to 4, characterized in that provided on the rear portion and obliquely intersect the housing. A power conditioner device according to any one of claims 1 to 5 ,
A solar cell for supplying direct current power to the power conditioner device;
A transformer device that transforms AC power supplied from the power conditioner device;
A photovoltaic power generation system comprising:

Images