JP2018102052A - Power Conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power conditioner which does not require frequent maintenance and can prevent dust from entering an interior of a duct even when a strong wind blows when placed outdoors.SOLUTION: A power conditioner 1 includes: a casing 2; a power conversion device 3 disposed inside the casing 2 for converting DC power into AC power; a duct 5 disposed inside the casing 2 for discharging heat generated in the power conversion device 3 to outside of the casing 2; a first door 6 disposed in an air inlet 51 of the duct 5 and capable of closing the air inlet 51; and a second door 7 disposed at an exhaust port 52 of the duct 5 and capable of closing the exhaust port 52.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a power conditioner having a power conversion device that converts DC power into AC power.

  Conventionally, there has been proposed a power conditioner that has a power conversion device that converts DC power into AC power and is disposed outdoors. Heat is generated in the power conversion device, and the generated heat can cause malfunction or failure of the electrical components inside the power conditioner. Therefore, a duct for releasing the heat generated in the power conversion device to the outside of the casing is arranged inside the casing constituting the power conditioner.

  When the dust enters the inside from the outside of the duct, the efficiency with which the heat generated in the power conversion device is discharged to the outside of the housing decreases. In order to prevent dust from entering the inside of the duct from the air inlet of the duct, a power conditioner having a dustproof filter disposed at the air inlet has been proposed (for example, see Patent Document 1). In order to prevent dust from entering the inside of the duct from the exhaust port of the duct, a power conditioner having a duct in which the rear stage of the path is bent has been proposed (for example, see Patent Document 2).

JP 2000-152655 A JP 2004-55681 A

  However, in the conventional power conditioner having a dustproof filter, dust is likely to be clogged in the dustproof filter, so that the dustproof filter must be maintained relatively frequently. In a conventional power conditioner having a duct with a curved path, when the power conditioner is disposed outdoors, dust enters the inside of the duct from the exhaust port of the duct during a strong wind. As described above, when dust enters the inside of the duct from the outside, the efficiency with which the heat generated in the power conversion device is discharged to the outside of the casing is reduced.

  The present invention has been made in view of the above, and does not require frequent maintenance, and suppresses intrusion of dust into the duct even when a strong wind blows when placed outdoors. It aims at obtaining the power conditioner which can do.

  In order to solve the above-described problems and achieve the object, the present invention provides a housing, a power conversion device that is disposed inside the housing and converts DC power into AC power, and the housing. A duct for dissipating heat generated in the power conversion device to the outside of the housing; a first door disposed at an inlet of the duct and capable of closing the inlet; and the duct And a second door capable of closing the exhaust port.

  The present invention does not require frequent maintenance, and has an effect that dust can be prevented from entering the inside of the duct even when a strong wind blows when placed outdoors.

The figure which shows the structure of the power conditioner concerning Embodiment 1. FIG. The figure which shows the state which the 1st door and 2nd door of the power conditioner concerning Embodiment 1 opened. The figure which shows a part of structure of the power conditioner concerning Embodiment 2. FIG. The figure which shows the state which the 2nd door of the power conditioner concerning Embodiment 2 opened. The figure for demonstrating the function which the power conditioner concerning Embodiment 2 has. The figure which shows a part of structure of the power conditioner of the modification concerning Embodiment 2. FIG. The figure which shows a part of structure of the power conditioner concerning Embodiment 3. FIG. The figure which shows a part of structure of the power conditioner of the 1st modification concerning Embodiment 3. FIG. The figure which shows a part of structure of the power conditioner of the 2nd modification concerning Embodiment 3. FIG. The figure which shows a part of structure of the power conditioner of the 3rd modification concerning Embodiment 3. FIG.

  Below, the power conditioner concerning embodiment of this invention is demonstrated in detail based on drawing. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
FIG. 1 is a diagram illustrating a configuration of a power conditioner 1 according to the first embodiment. Specifically, FIG. 1 shows one cross section of the power conditioner 1. The power conditioner 1 includes a housing 2 and a power conversion device 3 that is disposed inside the housing 2 and converts DC power into AC power. In the power converter 3, heat is generated when DC power is converted into AC power. The power conditioner 1 further includes an electrical component 4.

  The power conditioner 1 further includes a duct 5 that is disposed inside the housing 2 and that releases heat generated in the power conversion device 3 to the outside of the housing 2. The intake port 51 on one end side of the duct 5 is an opening for taking air outside the housing 2 into the duct 5. The exhaust port 52 on the other end side of the duct 5 is an opening for discharging the air inside the duct 5 to the outside of the housing 2. When the power conditioner 1 is disposed outdoors, the power conditioner 1 is disposed such that the intake port 51 is positioned vertically downward and the exhaust port 52 is positioned vertically upward.

  The power conversion device 3 and the electrical component 4 are disposed outside the duct 5 inside the housing 2. Therefore, even if dust enters the inside of the duct 5 from the intake port 51 or the exhaust port 52, the dust does not damage the power conversion device 3 and the electrical component 4, and the power conversion device 3 and the electrical component 4 are protected. .

  The power conditioner 1 is disposed at the air inlet 51 of the duct 5 to close the air inlet 51, and the power conditioner 1 is disposed at the air outlet 52 of the duct 5 to close the air outlet 52. The door 7 is further provided. FIG. 1 shows a state in which the first door 6 and the second door 7 of the power conditioner 1 according to the first embodiment are closed. FIG. 2 is a diagram illustrating a state in which the first door 6 and the second door 7 of the power conditioner 1 according to the first embodiment are opened.

  The first door 6 is a plate. As shown in FIGS. 1 and 2, the first door 6 rotates around the first rotation center 61 and can close or open the intake port 51. The second door 7 is a plate. As shown in FIGS. 1 and 2, the second door 7 rotates around the second rotation center 71 and can close or open the exhaust port 52. In FIG. 2, the arrow 6 a indicates that the first door 6 rotates in the direction toward the outside of the housing 2, and the arrow 7 a indicates that the second door 7 rotates in the direction toward the outside of the housing 2. It shows that it moves.

  The power conditioner 1 further includes a first drive unit 8 connected to the first door 6 and a second drive unit 9 connected to the second door 7. The first drive unit 8 is a plate. One side surface portion of the first drive unit 8 is the first rotation center of the first door 6 in a state where the first door 6 and the first drive unit 8 are not located on one plane. It is connected to the rotation center 61. Furthermore, the first drive unit 8 is located closer to the inside of the housing 2 than the first door 6. In other words, the first door 6 is located closer to the outside of the housing 2 than the first drive unit 8.

  The second drive unit 9 is a plate. One side surface portion of the second drive unit 9 is the second rotation center of the second door 7 in a state where the second door 7 and the second drive unit 9 are not located on one plane. It is connected to the rotation center 71. Furthermore, the second drive unit 9 is located closer to the inside of the housing 2 than the second door 7. In other words, the second door 7 is located closer to the outside of the housing 2 than the second driving unit 9.

  The power conditioner 1 further includes a first actuator 10 that opens and closes the first door 6 and a second actuator 11 that opens and closes the second door 7. Specifically, the first actuator 10 opens and closes the first door 6 by driving the first drive unit 8, and the second actuator 11 drives the second drive unit 9. Thus, the second door 7 is opened and closed.

  The power conditioner 1 further includes a first regulating unit 12 that regulates the range of operation of the first drive unit 8 and a second regulating unit 13 that regulates the range of operation of the second drive unit 9. The first actuator 10 opens and closes the first door 6 by driving the first driving unit 8 within a range regulated by the first regulating unit 12. The second actuator 11 opens and closes the second door 7 by driving the second driving unit 9 within a range regulated by the second regulating unit 13.

  The first actuator 10 opens the first door 6 when the power conversion device 3 is operating, and closes the first door 6 when the power conversion device 3 is stopped. The second actuator 11 opens the second door 7 when the power conversion device 3 is operating, and closes the second door 7 when the power conversion device 3 is stopped. That is, the first door 6 and the second door 7 are opened when the power conversion device 3 is operating, and are closed when the power conversion device 3 is stopped.

  The first actuator 10 includes a position where the first door 6 is completely closed, a position where the first door 6 is fully opened, a position where the first door 6 is completely closed, and the first door 6. The first door 6 is positioned either at a position intermediate between the position where the first door is fully opened. FIG. 1 shows an example of a state in which the first door 6 is completely closed, and FIG. 2 shows an example of a state in which the first door 6 is fully opened. The second actuator 11 includes a position where the second door 7 is completely closed, a position where the second door 7 is fully opened, a position where the second door 7 is completely closed, and the second door 7. The second door 7 is positioned either at a position intermediate between the position where the first door is fully opened. FIG. 1 shows an example of a state in which the second door 7 is completely closed, and FIG. 2 shows an example of a state in which the second door 7 is fully opened. Note that the intermediate position may be one position or any of a plurality of positions.

  The power conditioner 1 further includes a heat radiating portion 14 that releases heat generated in the power conversion device 3 into the duct 5. A part 15 of the heat radiating portion 14 is located outside the duct 5 inside the housing 2. The remaining portion 16 of the heat radiating portion 14 is located between the intake port 51 and the exhaust port 52 inside the duct 5. The remaining part 16 of the heat radiating part 14 is, for example, a fin. The power converter 3 and the electrical component 4 are connected to a part 15 of the heat radiating part 14 through, for example, a heat conductive sheet or grease.

  The power conditioner 1 further includes a fan 17 located inside the duct 5. Specifically, the fan 17 is located between the remaining portion 16 of the heat radiating portion 14 and the exhaust port 52 inside the duct 5. The fan 17 is used to take air from outside the housing 2 into the duct 5 from the air inlet 51 and to discharge air inside the duct 5 from the air outlet 52 to the outside of the housing 2. In FIG. 1, the fan 17 is shown in a state of a schematic structure in consideration of easy understanding.

  By the fan 17, air from the outside of the housing 2 is taken into the duct 5 from the air inlet 51 and discharged from the air outlet 52 to the outside of the housing 2. That is, the air advances from the air inlet 51 to the air outlet 52 inside the duct 5 by the fan 17. Therefore, the heat generated in the power conversion device 3 is discharged to the duct 5 through the heat radiating unit 14 and further discharged to the outside of the housing 2, that is, to the outside of the power conditioner 1.

  As described above, the power conditioner 1 according to the first embodiment does not have a dustproof filter, and therefore does not require frequent maintenance. The power conditioner 1 has a first door 6 and a second door 7. Therefore, even if the power conditioner 1 is disposed outdoors and a strong wind blows, the power conditioner 1 suppresses the entry of dust into the duct 5 by closing the first door 6 and the second door 7. can do. That is, the power conditioner 1 can suppress the remaining part 16 of the heat radiating part 14 and the fan 17 from being damaged by dust. The power conditioner 1 may further include a dust filter. Since the power conditioner 1 has the 1st door 6 and the 2nd door 7, it is not necessary to maintain a dustproof filter frequently.

  In the first embodiment, the first door 6 rotates around the first rotation center 61 and opens and closes the intake port 51. However, the first door 6 may open and close the intake port 51 by sliding. Alternatively, the first door 6 may have a foldable part, and the air inlet 51 may be closed by expanding the foldable part, and the air inlet 51 may be opened by folding the foldable part. . In any case, the first door 6 opens and closes the intake port 51.

  Similarly, the second door 7 may open and close the exhaust port 52 by sliding. Alternatively, the second door 7 may have a foldable portion, the exhaust port 52 may be closed by unfolding the foldable portion, and the exhaust port 52 may be opened by folding the foldable portion. . In any case, the second door 7 opens and closes the exhaust port 52.

  In the first embodiment, the first actuator 10 opens and closes the first door 6, and the second actuator 11 opens and closes the second door 7. However, the first door 6 may be opened and closed without being controlled by the first actuator 10, and the second door 7 may be opened and closed without being controlled by the second actuator 11. In any case, the first door 6 and the second door 7 are opened when the power conversion device 3 is operating, and are closed when the power conversion device 3 is stopped.

  The first door 6 and the second door 7 may be closed when a force equal to or greater than a preset force is applied from the outside of the duct 5 to the inside. For example, the preset force that is applied is the force that the strong wind brings. Thereby, the power conditioner 1 can suppress dust from entering the inside of the duct 5 from the intake port 51 or the exhaust port 52. As a result, the power conditioner 1 can suppress the remaining portion 16 of the heat radiating portion 14 and the fan 17 from being damaged by dust.

  In the first embodiment, the first door 6 and the second door 7 are plates, and the first drive unit 8 and the second drive unit 9 are plates. However, at least a part of the first door 6 and the second door 7 may be a plate. For both the first drive unit 8 and the second drive unit 9, at least a part may be a plate.

  The power conditioner 1 detects the temperature of the power conversion device 3, and when the detected temperature is higher than a predetermined temperature, the rotational speed of the fan 17 is increased to increase the amount of air flowing through the duct 5, and the first You may raise the ratio which the 1 door 6 and the 2nd door 7 open. When the detected temperature is lower than a predetermined temperature, the power conditioner 1 reduces the amount of air flowing through the duct 5 by reducing the number of rotations of the fan 17, and the first door 6 and the second door 7. You may reduce the rate at which opens. The power conditioner 1 can appropriately perform heat dissipation and suppression of entry of dust into the duct 5 by performing the above-described operation. In addition, the power conditioner 1 can reduce the power consumption applied to the fan 17.

  When the temperature of the environment where the power conditioner 1 is used is relatively low, or when the temperature of the power conversion device 3 disposed inside the housing 2 is relatively low, the fan 17 may stop operating. Thereby, the power consumption concerning the fan 17 can be reduced. The rate at which the first door 6 and the second door 7 open is controlled so as to suppress the entry of dust into the duct 5.

  When the power conditioner 1 is used in a cold region and the temperature of the environment in which the power conditioner 1 is used is extremely low, the ratio of opening the first door 6 and the second door 7 is that the inside of the housing 2 is overcooled. Thus, the power conversion device 3 and the electrical component 4 are controlled to prevent problems. Since the ratio of opening the first door 6 and the second door 7 is made relatively low, the heat generated in the power conversion device 3 arranged inside the housing 2 can be used. Reducing the opening ratio of the door 6 and the second door 7 to a relatively low level can reduce power consumption compared to the case where a heater is disposed inside the housing 2.

  When the power conditioner 1 is disposed outdoors, a wind speed sensor that detects the wind speed may be installed outside the housing 2. The rate at which the first door 6 and the second door 7 open may be controlled based on the value detected by the wind speed sensor. For example, the atmospheric pressure calculated based on the value detected by the wind speed sensor and the atmospheric pressure outside the housing 2 is relatively high, which may adversely affect the cooling of the inside of the housing 2. In some cases, the rate at which the first door 6 and the second door 7 open is controlled to be relatively low.

Embodiment 2. FIG.
FIG. 3 is a diagram illustrating a part of the configuration of the power conditioner 1 </ b> A according to the second embodiment. Specifically, FIG. 3 shows one cross section of a part of the power conditioner 1 </ b> A including the exhaust port 52. The power conditioner 1 </ b> A includes all the components included in the power conditioner 1 according to the first embodiment, and includes a first elastic body and a second elastic body 18. The first elastic body is for opening and closing the first door 6, and the second elastic body 18 is for opening and closing the second door 7. Note that the first elastic body is not shown in FIG. An example of the first elastic body and the second elastic body 18 is a spring. The difference between the second embodiment and the first embodiment is that the power conditioner 1 according to the first embodiment does not have the first elastic body and the second elastic body 18, but the second embodiment. Since the power conditioner 1 </ b> A according to the second embodiment has the first elastic body and the second elastic body 18, the second embodiment will mainly describe differences from the first embodiment.

  The second elastic body 18 is connected to the second drive unit 9, and the expansion and contraction of the second elastic body 18 is controlled by the second actuator 11. For example, the expansion and contraction of the second elastic body 18 is controlled by changing the position of the second actuator 11. FIG. 3 shows a state in which the second door 7 of the power conditioner 1A according to the second embodiment is closed. FIG. 4 is a diagram illustrating a state where the second door 7 of the power conditioner 1 </ b> A according to the second embodiment is opened. As shown in FIGS. 3 and 4, the second actuator 11 cooperates with the second drive unit 9 when the second door 7 is closed, and the second elastic body 18 with respect to the second elastic body 18. A second force is applied in the direction of the inner side of 18 and the second force is released when the second door 7 is opened. Thus, the expansion and contraction of the second elastic body 18 is controlled by the second actuator 11.

  FIG. 5 is a diagram for explaining functions of the power conditioner 1 </ b> A according to the second embodiment. In FIG. 5, an arrow 7 b indicates that the second door 7 rotates in the direction toward the inside of the housing 2. As shown in FIGS. 3, 4, and 5, the second door 7 is located closer to the outside of the housing 2 than the second drive unit 9. Therefore, when the strong wind 80 blows from the outside of the housing 2 toward the exhaust port 52, the second door 7 rotates in the direction inside the duct 5. That is, when the strong wind 80 blows from the outside of the housing 2 toward the exhaust port 52, the second door 7 is closed. Thereby, the power conditioner 1 </ b> A can prevent dust from entering the duct 5 from the exhaust port 52. As a result, even if the power conditioner 1A is installed outdoors and the strong wind 80 is blowing outdoors, the power conditioner 1A can suppress the remaining portion 16 of the heat radiating portion 14 and the fan 17 from being damaged by dust.

  Although the opening and closing of the second door 7 of the second embodiment has been described with reference to FIGS. 3, 4, and 5, the first door 6 opens and closes similarly to the second door 7 although not shown. That is, the first elastic body has the same function as the second elastic body 18, and although not shown, the first elastic body is connected to the first drive unit 8, and the first elastic body expands and contracts. Is controlled by the first actuator 10. When the first actuator 10 closes the first door 6, the first actuator 10 cooperates with the first driving unit 8 to apply a first force to the first elastic body toward the inside of the first elastic body. In addition, when the first door 6 is opened, the first force is released. Thus, the expansion and contraction of the first elastic body is controlled by the first actuator 10.

  The first door 6 is located closer to the outside of the housing 2 than the first drive unit 8. Therefore, when strong wind blows from the outside of the housing 2 toward the intake port 51, the first door 6 rotates in the direction inside the duct 5. That is, when strong wind blows from the outside of the housing 2 toward the air inlet 51, the first door 6 is closed. Thereby, the power conditioner 1 </ b> A can prevent dust from entering the duct 5 from the air inlet 51. As a result, even if the power conditioner 1 </ b> A is installed outdoors and strong winds are blowing outdoors, the power conditioner 1 </ b> A can suppress the remaining portion 16 of the heat radiating unit 14 and the fan 17 from being damaged by dust.

  The first door 6 and the second door 7 are closed when a force greater than a preset force is applied from the outside of the duct 5 to the inside. For example, the preset force that is applied is the force that the strong wind brings. As a result, the power conditioner 1 </ b> A can prevent dust from entering the duct 5 from the intake port 51 or the exhaust port 52. As a result, the power conditioner 1A can suppress the remaining portion 16 of the heat radiating portion 14 and the fan 17 from being damaged by dust.

  For example, a strong wind may blow on the power conditioner 1A for a relatively long time due to a typhoon. In that case, even if the power converter device 3 is operating, the first door 6 and the second door 7 are closed. If the first door 6 and the second door 7 are closed while the power conversion device 3 is operating, one or both of the power conversion device 3 and the electrical component 4 may be damaged or malfunction due to heat. Therefore, the temperature of the remaining part 16 of the power conversion device 3, the electrical component 4, or the heat radiating unit 14 is detected by a sensor, and one or both of the power conversion device 3 and the electrical component 4 are damaged or malfunctioned based on the detected temperature. Before doing so, the power conversion device 3 stops operating. Thereby, it can avoid that one or both of the power converter device 3 and the electrical component 4 damage or malfunction.

  FIG. 6 is a diagram illustrating a part of the configuration of a power conditioner 1 </ b> B according to a modification example of the second embodiment. As shown in FIG. 6, the power conditioner 1 </ b> B does not have the second actuator 11. The power conditioner 1B has a second elastic body 18 in the same manner as the power conditioner 1A. The second elastic body 18 of the power conditioner 1B has an urging force for opening and closing the second door 7, and the urging force for the second elastic body 18 of the power conditioner 1A to open and close the second door 7. Add in the opposite direction. Thereby, the second door 7 can be opened only by the pressure of the gas discharged from the fan 17 to the outside of the housing 2.

Embodiment 3 FIG.
FIG. 7 is a diagram illustrating a part of the configuration of the power conditioner 1 </ b> C according to the third embodiment. Specifically, FIG. 7 shows one cross section of a part of the power conditioner 1 </ b> C including the portion of the intake port 51. The power conditioner 1 </ b> C includes all the components of the power conditioner 1 according to the first embodiment, but the first door 6 may not be disposed at the intake port 51, and the second door is disposed at the exhaust port 52. 7 may not be arranged. The duct 5 of the power conditioner 1 </ b> C has a labyrinth structure portion 19 located between the air inlet 51 and the remaining portion 16 of the heat radiating portion 14 inside the duct 5. The difference between the third embodiment and the first embodiment is that the duct 5 of the power conditioner 1 according to the first embodiment does not have the labyrinth structure portion 19, whereas the power conditioner 1C according to the third embodiment. Is a point having a labyrinth structure portion 19. As described above, the first door 6 may not be disposed at the intake port 51, and the second door 7 may not be disposed at the exhaust port 52.

  Since the power conditioner 1 </ b> C has the labyrinth structure portion 19, even if relatively large dust enters the inside of the duct 5 from the air inlet 51, the dust remains in the labyrinth structure portion 19 and the dust reaches the remaining portion 16 of the heat radiating portion 14. Can be prevented from reaching. As shown in FIG. 7, the labyrinth structure portion 19 includes a housing configuration door 20 that constitutes a part of the housing 2 and is detachable. The user of the power conditioner 1 </ b> C can remove the dust that has remained on the labyrinth structure portion 19 by removing the casing configuration door 20 from the casing 2. That is, the user can perform maintenance of the duct 5 of the power conditioner 1C relatively easily.

  FIG. 8 is a diagram illustrating a part of the configuration of the power conditioner 1 </ b> D of the first modification example according to the third embodiment. As shown in FIG. 8, the duct 5 of the power conditioner 1 </ b> D further includes an adsorbent 21 located in the path of the labyrinth structure 19. Specifically, the duct 5 of the power conditioner 1 </ b> D has three adsorbents 21, and the one adsorbent 21 is located on the housing configuration door 20. The adsorbent 21 allows the dust to be reliably retained by the labyrinth structure portion 19. A user of the power conditioner 1 </ b> D can remove the housing component door 20 from the housing 2 and remove the dust remaining on the labyrinth structure portion 19. That is, the user can perform maintenance of the duct 5 of the power conditioner 1D relatively easily.

  FIG. 9 is a diagram illustrating a part of the configuration of the power conditioner 1 </ b> E of the second modification example according to the third embodiment. FIG. 10 is a diagram illustrating a part of the configuration of the power conditioner 1 </ b> F of the third modification example according to the third embodiment. As shown in FIG.9 and FIG.10, a part of path | route of the labyrinth structure part 19 of the power conditioner 1E and the power conditioner 1F is concave. Specifically, a part of the path of the labyrinth structure portion 19 of the power conditioner 1E is the first recess 22, and a part of the path of the labyrinth structure portion 19 of the power conditioner 1F is the second recess 23. Even if dust enters the inside of the duct 5 from the intake port 51, the dust is likely to remain in the first recess 22 or the second recess 23. In other words, the first concave portion 22 or the second concave portion 23 can more reliably make dust stay on the labyrinth structure portion 19. The users of the power conditioner 1E and the power conditioner 1F can remove the dust that has remained on the labyrinth structure portion 19 by removing the casing-constituting door 20 from the casing 2. That is, the user can perform maintenance of the power conditioner 1E and the duct 5 of the power conditioner 1F relatively easily.

  The configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.

  1, 1A, 1B, 1C, 1D, 1E, 1F Power conditioner, 2 housing, 3 power conversion device, 4 electrical components, 5 duct, 6 first door, 7 second door, 8 first drive unit , 9 2nd drive part, 10 1st actuator, 11 2nd actuator, 12 1st restriction part, 13 2nd restriction part, 14 heat radiation part, 15 part of heat radiation part, 16 remainder of heat radiation part , 17 Fan, 18 Second elastic body, 19 Labyrinth structure part, 20 Housing structure door, 21 Adsorbent, 22 First concave, 23 Second concave, 51 Inlet, 52 Exhaust, 61 First Center of rotation, 71 Second center of rotation, 80 strong wind.

Claims (10)

A housing,
A power conversion device that is arranged inside the housing and converts DC power to AC power;
A duct disposed inside the housing for releasing heat generated in the power conversion device to the outside of the housing;
A first door disposed at the inlet of the duct and capable of closing the inlet;
A power conditioner comprising: a second door disposed at an exhaust port of the duct and capable of closing the exhaust port. 2. The power according to claim 1, wherein the first door and the second door are opened when the power conversion device is operating, and are closed when the power conversion device is stopped. conditioner. A first actuator for opening and closing the first door;
The power conditioner according to claim 1, further comprising: a second actuator that opens and closes the second door. The first actuator includes a position where the first door is completely closed, a position where the first door is fully opened, a position where the first door is completely closed, and the first door. Positioning the first door at a position intermediate between the fully open position and
The second actuator includes a position where the second door is completely closed, a position where the second door is fully opened, a position where the second door is completely closed, and the second door. The power conditioner according to claim 3, wherein the second door is positioned at a position intermediate between a position where the door is fully opened. A first elastic body for opening and closing the first door;
The power conditioner according to claim 1, further comprising: a second elastic body for opening and closing the second door. The first door and the second door are closed when a force equal to or greater than a preset force is applied from the outside to the inside of the duct. The power conditioner according to item 1. A housing,
A power conversion device that is arranged inside the housing and converts DC power to AC power;
A duct disposed inside the housing for releasing heat generated in the power conversion device to the outside of the housing;
A heat dissipating part that releases heat generated in the power converter into the duct;
A part of the heat dissipation part is located inside the casing and outside the duct,
The remainder of the heat dissipating part is located between the air inlet and the air outlet inside the duct,
The said duct has a labyrinth structure part located between the said inlet and the remainder of the said thermal radiation part inside the said duct. The power conditioner characterized by the above-mentioned. The power conditioner according to claim 7, wherein the labyrinth structure portion includes a detachable housing configuration door that forms a part of the housing. The power conditioner according to claim 7, wherein the duct further includes an adsorbent located in a path of the labyrinth structure portion. The power conditioner according to claim 7, wherein a part of the path of the labyrinth structure portion is concave.

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