JP2018060829A - Electrical facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrical facility having a structure suitable for outdoor installation.SOLUTION: An inner case 160 in an electrical facility 1000 houses an electrical apparatus. A body case 100 houses the inner case 160. An inner case top plane 162 in the inner case 160 is provided with an exhaust fan 164. In the body case 100, the exhaust fan 164 is disposed at the outside of the body case top plane 110 facing to the inner case top plane 162 of the inner case 160, to which the exhaust fan 164 is disposed.SELECTED DRAWING: Figure 10

Description

  The present invention relates to an electrical facility, and more particularly to an electrical facility that houses electrical equipment.

  Electronic equipment installed outdoors is exposed to rain when it rains. For this reason, the casing of such an electronic device has a waterproof structure (see, for example, Patent Document 1).

JP, 2015-12140, A

  Devices installed outdoors need to be waterproof, but not only waterproof, but also a structure suitable for the outdoors is required.

  This invention is made | formed in view of such a condition, The objective is to provide the electrical equipment which has a structure suitable for the outdoors.

  In order to solve the above problems, an electrical facility according to an aspect of the present invention includes an inner case that houses an electrical device and an outer case that houses an inner case. An exhaust fan is provided on one surface of the inner case, and a heat radiating fin is provided outside the surface of the outer case facing the one surface of the inner case where the exhaust fan is provided.

  ADVANTAGE OF THE INVENTION According to this invention, the electrical equipment which has a structure suitable for the outdoors can be provided.

It is a perspective view which shows the structure of the electrical installation which concerns on the Example of this invention. It is another perspective view which shows the structure of the electrical installation of FIG. It is a disassembled perspective view which shows the structure of the electric equipment of FIG. It is a side view which shows the structure of the electrical installation of FIG. It is a decomposition | disassembly side view which shows the structure of the electric equipment of FIG. It is a front view which shows the structure of the electrical installation of FIG. It is another exploded perspective view which shows the structure of the electrical installation of FIG. FIGS. 8A and 8B are perspective views showing structures of a main body case, a piping cover, and a wiring cover in the electric facility of FIG. It is a perspective view which shows the structure of the piping cover of Fig.8 (a)-(b). It is a perspective view which shows the structure of the main body case in the electric equipment of FIG. It is a perspective view which shows the structure of the 1st heat sink of Fig.8 (a)-(b). It is another perspective view which shows the structure of the 1st heat sink of Fig.8 (a)-(b). It is another perspective view which shows the structure of the 1st heat sink of Fig.8 (a)-(b). It is a perspective view which shows the structure of the 2nd heat sink of Fig.8 (a)-(b).

Before specifically describing the embodiments of the present invention, an outline of the embodiments will be described. The embodiment relates to an electrical facility installed outdoors. An example of electrical equipment is a power converter. Electrical equipment installed outdoors is required to be waterproof in order to suppress the influence of rain. Furthermore, such an electrical installation is placed in the following situation.
(I) In the outdoors, warm air containing water vapor is easily cooled by electric equipment. As a result, condensation may occur inside the electrical equipment. If moisture due to condensation adheres to electrical equipment stored in the electrical equipment, the electrical equipment may be damaged.
(Ii) Outdoors, the temperature in the electrical equipment tends to increase due to solar radiation. An excessive rise in temperature is not preferable for an electric device housed in an electric facility.
(Iii) When installed outdoors, the electrical equipment becomes conspicuous. If the mechanical structure of the electrical equipment is exposed, the appearance will be impaired.

(Iv) In order to improve waterproofness, it is effective to make the electrical equipment a sealed structure, but the heat dissipation of the electrical equipment is lowered by the sealed structure. On the other hand, since the electrical equipment housed in the electrical equipment generates heat due to the operation, heat dissipation is required.
(V) Piping or wiring is inserted into the electrical equipment from the outside. The insertion portion is closer to the exposure than the other portions, and water easily enters even if it is not directly exposed to rain. If water penetrates into the electrical equipment from the insertion part, the electrical equipment housed in the electrical equipment may be damaged.
(Vi) Dust may be trapped outdoors in the air. If dust enters the electrical equipment, the electrical equipment housed in the electrical equipment may be damaged.
(Vii) Since changes in temperature and weather are large outdoors, the waterproofness of the electrical equipment tends to deteriorate. If the deterioration of the waterproof property is large, the burden of maintenance on the electric equipment becomes large.
(Viii) Since the installation work is outdoors, the ease of installation affects workability.
(Ix) Electrical equipment that improves waterproofness tends to increase manufacturing costs.
It can be said that a structure that improves these situations is a structure suitable for the outdoors. In this embodiment, an electrical facility having a structure suitable for the outdoors will be described.

  In the following description, “parallel” and “vertical” include not only perfect parallel and vertical, but also include cases in which they deviate from parallel and vertical within an error range. Further, “substantially” means that they are the same in an approximate range. In the following, in order to clarify the explanation, (1) overall structure, (2) piping structure and wiring structure, (3) body case structure, and (4) electrical equipment structure will be described in this order.

(1) Overall Structure The overall structure of the electrical equipment 1000 will be described with reference to FIGS. As shown in FIG. 1, an orthogonal coordinate system including an x-axis, a y-axis, and a z-axis is defined. The x axis and the y axis are orthogonal to each other within the bottom surface of the electric facility 1000. The z-axis is perpendicular to the x-axis and the y-axis and extends in the height (vertical) direction of the electric equipment 1000. Further, the positive directions of the x-axis, y-axis, and z-axis are each defined in the direction of the arrow in FIG. 1, and the negative direction is defined in the direction opposite to the arrow. Also, the positive direction side of the x axis is “front side” or “front side”, the negative direction side of the x axis is “rear side” or “rear side”, and the positive direction side of the z axis is “upper side” or “top side” The negative direction side of the z-axis is sometimes referred to as “lower side” or “bottom side”. Furthermore, the y-axis direction may be referred to as “side surface side”.

  1 and 2 are perspective views showing the structure of an electrical installation 1000 according to an embodiment of the present invention. FIG. 1 is a view of the electrical installation 1000 viewed from the front side, and FIG. It is the structure seen from the side. FIG. 3 is an exploded perspective view showing the structure of the electrical equipment 1000, and is an exploded perspective view in the same direction as FIG. 4 is a side view showing the structure of the electric equipment 1000, and FIG. 5 is an exploded side view showing the structure of the electric equipment 1000 in the same direction as FIG. FIG. 6 will be described later. Here, the case where the electrical installation 1000 is installed outdoors is illustrated.

  The electrical equipment 1000 includes a main body case 100, a front cover 200, a rear cover 300, a piping cover 400, and a wiring cover 500. The main body case 100 includes a main body case top surface 110, a main body flange 112, a main body case side surface 116, a handle portion 118, a main body case rear surface 122, a bottom cover 124, a main body case bottom surface 126, a storage space 150, an opening space 152, an inner wall 154, an inner side. A case 160, an inner case top surface 162, an inner case side surface 168, and an electric device lid 180 are included. The front cover 200 includes a front cover top surface 210, a heat radiation port 212, a front cover side surface 216, and a front cover front surface 220. The rear cover 300 includes a rear cover top surface 310, a rear flange 312, a notch 314, a rear cover side surface 316, a rear cover rear surface 322, a rear cover bottom surface 326, a rear surface opening 328, a shielding plate 350, and a slit 360.

  The constituent elements of the main body case 100, the front cover 200, the rear cover 300, and the wiring cover 500 are connected by screws, welding, adhesives, and the like. Description is omitted. The same applies to the connection among the main body case 100, the front cover 200, the rear cover 300, the piping cover 400, and the wiring cover 500. Moreover, a some component may be formed integrally.

  The main body case 100 is formed in a box shape opened to the positive side of the x axis. Here, the main body case top surface 110 is disposed on the positive side of the z axis, the main body case side surface 116 is disposed on both sides in the y axis direction, and the main body case back surface 122 is disposed on the negative direction side of the x axis. A main body case bottom face 126 is disposed on the negative direction side of the z-axis. A bottom cover 124 is disposed on the negative side of the z-axis of the main body case bottom surface 126, and the bottom cover 124 supports the main body case 100 from the negative direction side of the z-axis. Each main body case side surface 116 is provided with a handle portion 118 that can be gripped by the user. An inner wall 154 having a plate shape extending in the y-axis direction is arranged inside the main body case 100 formed in a box shape. The inner wall 154 separates the inside of the main body case 100 into a storage space 150 on the positive side of the z axis and an opening space 152 on the negative direction side of the z axis.

  An inner case 160 is disposed in the storage space 150. The inner case 160 is formed in a box shape opened to the positive direction side of the x-axis, like the main body case 100. Although the details of the structure of the inner case 160 will be described later, the inner case top surface 162 is disposed on the positive direction side of the z axis, and the inner case side surfaces 168 are disposed on both sides in the y axis direction. Further, the negative side of the inner case 160 on the x axis is closed by the main body case back surface 122. The inner case 160 houses electrical equipment. An example of the electric device is a conversion circuit that converts DC power into AC power. Although details of the conversion circuit will be described later, it can be said that this is a circuit including a heating element. Moreover, the opening part of the inner side case 160 is closed by the electric equipment lid | cover 180 so that opening and closing is possible. The electric device lid 180 is formed in a plate shape having a rectangular shape in the yz plane. A piping cover 400 and a wiring cover 500 are connected to the opening space 152. The piping cover 400 and the wiring cover 500 will be described later.

  The front cover 200 is disposed in front of the main body case 100, that is, on the positive side of the x axis so as to cover the opening in the main body case 100. In the front cover 200, the front cover front surface 220 for covering the opening in the main body case 100 is formed in a plate shape extending in the yz plane, the front cover top surface 210 on the positive side of the z axis, Surrounded by front cover side surfaces 216 on both sides. A plurality of heat radiation ports 212 are provided on both ends of the front cover top surface 210 in the y-axis direction. The front cover 200 is attached to the main body case 100 from the positive direction side of the x-axis as shown in FIGS. Here, in order to make the configuration of the main body case 100 easier to understand, the front cover 200 is shown as transparent, but the main body case 100 is actually colored.

  The rear cover 300 is disposed behind the main body case 100, that is, on the negative direction side of the x axis so as to cover the main body case rear surface 122. In the rear cover 300, the rear cover rear surface 322 for covering the main body case rear surface 122 is formed in a plate shape extending in the yz plane, and the rear cover top surface 310 on the positive side of the z axis, both directions of the y axis. The rear cover side surface 316 on the side and the back cover bottom surface 326 on the negative direction side of the z-axis are surrounded. A plurality of slits 360 are provided in the rear cover top surface 310 and the back cover bottom surface 326. The slit 360 is used for heat dissipation against heat generation in the main body case 100. In addition, a rear opening 328 and a shielding plate 350 are provided on the rear cover rear surface 322. Since the rear cover 300 is attached to the main body case 100 from the negative direction side of the x axis as shown in FIGS. 1, 2, and 4, the main body case 100 is surrounded by the front cover 200 and the rear cover 300. Thereby, the main body case 100 is not exposed, and it is suppressed that the appearance is impaired regardless of the configuration of the main body case 100. Further, the surface on the negative direction side of the x-axis of the rear cover back surface 322 is fixed to a standing wall such as a building (not shown).

  In a state where the front cover 200 and the rear cover 300 are attached to the main body case 100, the front cover top surface 210 is disposed above the main body case top surface 110 and the rear cover top surface 310, that is, on the positive direction side of the z axis. The Here, since the width of the front cover top surface 210 in the x-axis direction is wider than the width of the main body case top surface 110 in the x-axis direction, the main body case top surface 110 is covered with the front cover top surface 210. That is, a double structure of the front cover top surface 210 and the main body case top surface 110 is formed in the z-axis direction. The double structure improves waterproofness, and the presence of an air layer between the front cover top surface 210 and the main body case top surface 110 suppresses the occurrence of condensation or increases the temperature inside the main body case 100 due to solar radiation. It is suppressed. When the x-axis direction of the front cover top surface 210 is narrower than the width of the main body case top surface 110 in the x-axis direction, the main body case top surface 110 is covered with the front cover top surface 210 and the rear cover top surface 310. May be.

  Further, a main body flange 112 protruding toward the front cover top surface 210 is provided at the edge of the main body case top surface 110 on the positive side of the x-axis. The main body flange 112 fills a gap between the front cover top surface 210 and the main body case top surface 110. The main body flange 112 is also provided on the main body case side surface 116. The main body flange 112 protrudes toward the front cover side surface 216 and fills a gap between the main body case side surface 116 and the front cover side surface 216. This also leads to improved waterproofness.

  A rear flange 312 that protrudes toward the front cover top surface 210 is provided at the edge of the rear cover top surface 310 on the positive side of the x-axis. The rear flange 312 fills a gap between the front cover top surface 210 and the rear cover top surface 310. This also leads to improved waterproofness. The rear flange 312 is provided with a plurality of notches 314 having a recessed shape. Note that a heat radiation port may be provided instead of the notch 314. Thereby, even if heat is generated inside the main body case 100, heat dissipation is promoted.

  FIG. 6 is a front view showing the structure of the electric facility 1000. Main body case 100 in electrical equipment 1000 further includes a terminal portion 156. A plurality of terminal portions 156 are provided on the inner wall 154 on the opening space 152 side. The terminal part 156 is a terminal for connecting piping or wiring inserted into the electric facility 1000 from the outside. Here, piping and wiring correspond to electric wires. In the following, illustration of piping and wiring is omitted. With such a connection, electric power is input and output between the electric equipment stored in the electric facility 1000 and the outside. Since the terminal portion 156 is disposed on the opening space 152 side, piping or wiring is not inserted into the storage space 150. This eliminates the need to provide a hole in the inner wall 154 for passing piping or wiring, and prevents water or dust from entering the storage space 150.

  As described above, the heat radiation ports 212 are provided on both ends of the front cover top surface 210 in the y-axis direction. The heat radiation port 212 is disposed on the positive side of the z-axis in the space sandwiched between the body case side surface 116 and the front cover side surface 216. Thereby, even if heat is generated inside the main body case 100, heat is radiated through the air path 800 formed in the space.

  A handle portion 118 is provided on the side surface 116 of the main body case so as to be disposed in a space between the side surface 116 of the main body case and the side surface 216 of the front cover. The main body case side surface 116 and the front cover side surface 216 are provided apart from each other, and the front cover side surface 216 has a certain length in the z-axis direction. Therefore, the front cover side surface 216 is easily bent toward the main body case 100, but the bending is suppressed by the handle portion 118 supporting the front cover side surface 216.

(2) Piping Structure and Wiring Structure FIG. 7 is another exploded perspective view showing the structure of the electric equipment 1000, and is an exploded perspective view in the same direction as FIG. FIGS. 8A and 8B are perspective views showing structures of the main body case 100, the piping cover 400, and the wiring cover 500 in the electric equipment 1000, and are further exploded perspective views of the main body case 100 in FIG. The main body case 100 further includes a bottom surface opening 128, a main body opening 130, a fixing bracket 132, and a piping hole 134. The piping cover 400 includes a piping hole 402. The wiring cover 500 includes a first flange 510, a second flange 512, a third flange 514, a cover part 520, and a sealing groove part 530. A first heat sink 600 and a second heat sink 700 are disposed on the main body case back surface 122.

  The main body case bottom surface 126 is provided with a bottom surface opening 128 and a plurality of piping holes 134. The bottom opening 128 opens in a rectangular shape on the positive side of the y-axis of the main body case bottom 126. The bottom opening 128 is provided for inserting a pipe (not shown) from below the main body case 100 into the main body case 100. Further, a plurality of piping holes 134 are provided in a portion where the bottom opening 128 is not provided in the main body case bottom 126. The plurality of piping holes 134 are also provided for inserting piping from below the main body case 100 into the main body case 100. Since one pipe is passed through one pipe hole 134, the diameter of the pipe hole 134 is a size corresponding to the diameter of the pipe and larger than the diameter of the pipe.

  The pipe cover 400 is attached to the main body case bottom surface 126 so as to cover the bottom surface opening 128 from below. The pipe cover 400 is formed in a plate shape that expands in the xy plane, and has a size larger than the bottom opening 128 in the xy plane. A plurality of piping holes 402 are provided in the piping cover 400. The piping hole 402 is formed in the same manner as the piping hole 134. The pipe passing through the pipe hole 402 or the pipe hole 134 is connected to the terminal portion 156 described above. Here, when installing the electrical equipment 1000, the pipe cover 400 is attached to the bottom surface 126 of the main body case after passing the pipe through the pipe hole 402. Therefore, workability at the time of installation is improved. Moreover, since the piping cover 400 has a size larger than the bottom opening 128, water intrusion from between the piping cover 400 and the bottom opening 128 is suppressed. Details of the piping cover 400 will be described later.

  A main body opening 130 is provided on the rear surface 122 of the main body case. The main body opening 130 is disposed so as to be close to the bottom surface opening 128, and is disposed so as to face the rear surface opening 328 provided on the rear cover back surface 322 in the x-axis direction. The main body opening 130 has a shape that is a mirror image object with respect to the rear opening 328, and has, for example, a rectangular shape with one upper corner missing. Wiring from the outside of the electric equipment 1000, for example, a standing wall that fixes the electric equipment 1000, is passed through the rear opening 328. The wiring is inserted into the main body case 100 through the main body opening 130 following the rear opening 328. The wiring that passes through the main body opening 130 is connected to the terminal portion 156 described above.

  The wiring cover 500 is attached so as to connect the main body case 100 and the rear cover 300 while surrounding the main body opening 130 and the rear opening 328 from above. The first flange 510 in the wiring cover 500 has a shape that surrounds at least a part of the main body opening 130, specifically, the upper side and the side, and is fitted to the edge of the main body opening 130 while being aligned with the edge of the main body case 130. Fixed to. The second flange 512 has a shape surrounding at least a part of the rear opening 328, specifically, the upper side and the side, and is fixed to the rear cover rear surface 322 while being fitted to the edge of the rear opening 328. . Cover portion 520 is arranged to connect between first flange 510 and second flange 512 in the x-axis direction. The cover part 520 covers the wiring from the positive direction side of the z axis. In the cover part 520, the negative direction side of the z-axis is opened.

  Further, in the first flange 510, the second flange 512, and the cover portion 520, the negative side end of the z axis is connected by the third flange 514. Here, the first flange 510, the second flange 512, the third flange 514, and the cover portion 520 are integrally formed. Thus, since the wiring straddling between the main body case back surface 122 and the rear cover back surface 322 is covered by the wiring cover 500, water is temporarily inserted between the main body case back surface 122 and the rear cover back surface 322 from the positive side of the z axis. Even if it intrudes, the wiring is prevented from getting wet, so that the waterproofness is improved.

  When installing the electrical equipment 1000 on the standing wall, the main body case 100 is attached to the rear surface cover 300 after the rear surface cover 300 is fixed to the standing wall. At that time, the wiring cover 500 is connected to the rear cover rear surface 322 while being fixed to the main body case rear surface 122. Therefore, since the connection between the second flange 512 and the rear cover back surface 322 is made at the installation site of the electric equipment 1000, the connection state may vary and the waterproofness may deteriorate. In order to suppress this deterioration in waterproofness, a sealing groove 530 is formed on the surface of the second flange 512 on the rear cover back surface 322 side along the shape of the surface. A sealing member such as packing is disposed in the sealing groove 530. Therefore, the second flange 512 and the rear cover back surface 322 are connected while sandwiching the sealing member. As a result, the connection becomes strong and deterioration of waterproofness is suppressed. Note that the sealing groove 530 may also be formed in the first flange 510 and the third flange 514 in the same manner as the second flange 512. At that time, the sealing member is also disposed in the sealing groove 530 of the first flange 510 and the third flange 514.

  In the wiring cover 500, the cover portion 520 is not formed on the negative direction side of the z axis, and the wiring cover 500 opens in this direction. Here, the third flange 514 is covered by the pipe cover 400 from the negative direction side of the z-axis. With such a configuration, entry of water from below is suppressed. Here, the piping cover 400 has a size corresponding to the interval between the two third flanges 514 in the y-axis direction. Since the piping cover 400 is not too large, a reduction in heat dissipation is suppressed. Moreover, since the piping cover 400 and the wiring cover 500 are connected, the piping drawing position and the wiring drawing position are combined, and the positions to be waterproofed are collected. In a state where the pipe cover 400 is attached to the main body case bottom surface 126, the bottom cover 124 is connected to the main body case bottom surface 126 from the negative direction side of the z axis.

  A first heat sink 600 and a second heat sink 700 are arranged in the y-axis direction on the main body case rear surface 122. The first heat sink 600 and the second heat sink 700 have different structures, and each radiates heat generated by the electrical equipment housed in the main body case 100. The second heat sink 700 is formed so that the length in the z-axis direction is shorter than that of the first heat sink 600. Therefore, the space on the negative direction side of the z-axis of the second heat sink 700 is larger than the space on the negative direction side of the z-axis of the first heat sink 600. In order to effectively use such a space, the bottom opening 128 and the main body opening 130 are disposed on the negative direction side of the z-axis of the second heat sink 700. Fixing fitting 132 is connected to main body case back surface 122 so as to cover first heat sink 600 and second heat sink 700. The fixing bracket 132 is also connected to the rear cover back surface 322.

  Further, a shielding plate 350 is provided on the rear cover back surface 322 in order to suppress water intrusion when the wiring cover 500 fixed to the main body case back surface 122 is connected to the rear cover back surface 322. The shielding plate 350 protrudes toward the positive direction side of the x-axis on the positive direction side of the z-axis of the rear opening 328, that is, toward the back side of the main body case 122.

  FIG. 9 is a perspective view showing the structure of the piping cover 400. The piping cover 400 includes a piping hole 402, a cover bottom surface 404, a waterproof wall 410, a waterproof groove 420, and a drain hole 430. The cover bottom surface 404 is formed in a substantially rectangular shape. A plurality of piping holes 402 are arranged on the bottom surface 404 of the cover. A waterproof wall 410 is erected on the cover bottom surface 404 so as to surround the piping hole 402 in the positive direction of the z axis. A waterproof groove 420 is provided on the cover bottom surface 404 so as to surround the waterproof wall 410. In the waterproof groove 420, a plurality of walls and grooves are arranged. The waterproof groove 420 is provided with a drain hole 430 that penetrates the cover bottom surface 404 in the z-axis direction. When the pipe cover 400 is attached to the main body case 100, the waterproof groove 420 contacts the main body case bottom surface 126 and the third flange 514. The water that has entered the waterproof groove 420 flows through the groove along the wall without flowing into the piping hole 402 side beyond the waterproof wall 410 and is discharged from the drain hole 430. With such a configuration, entry of water from the piping cover 400 into the main body case 100 is suppressed, and waterproofness is improved.

(3) Main Body Case Structure FIG. 10 is a perspective view showing the structure of the main body case 100 in the electric equipment 1000. This corresponds to a configuration in which the electric device lid 180 is removed from the main body case 100 of FIG. The main body case 100 further includes an exhaust fan 164, a heat radiation fin 166, an inner case bottom surface 170, and an inner case opening 172. On the mounting surface 602, a plurality of reactor elements 610, a plurality of coils 612, and a transformer 614 are arranged. A control board 710 and a circuit 712 are arranged on the mounting surface 702. As described above, the interior of the main body case 100 is divided into the storage space 150 and the opening space 152 with the inner wall 154 as a boundary. The storage space 150 stores electrical equipment, and the opening space 152 includes the bottom opening 128, the main body. An opening 130 and a terminal portion 156 are included.

  In the storage space 150, an inner case 160 spaced inward from the main body case 100 is disposed. That is, the inner case top surface 162 is disposed so as to face the main body case top surface 110, and the inner case side surface 168 is disposed so as to face the main body case side surface 116. Further, the inner case bottom surface 170 is disposed so as to face the inner wall 154 on the negative direction side of the z-axis. Further, the inner case top surface 162, the inner case side surface 168, and the inner case bottom surface 170 surround the main body case rear surface 122 (not shown), thereby forming a box-shaped inner case 160 opened to the positive direction side of the x axis. Is done. Since the main body case 100 houses the inner case 160, the main body case 100 can be said to be an “outer case”.

  Inside the inner case 160, the placement surface 602 and the placement surface 702 are arranged in the y-axis direction while facing the positive direction side of the x-axis. Here, the mounting surface 602 is the surface on the opposite side of the first heat sink 600 shown in FIG. 8, and the mounting surface 702 is the surface on the opposite side of the second heat sink 700 shown in FIG. Therefore, the placement surface 702 is formed so that the length in the z-axis direction is shorter than the placement surface 602. Electric devices are mounted on the mounting surface 602 and the mounting surface 702. As described above, the electrical device is a conversion circuit. Here, among the conversion circuits, a plurality of reactor elements 610, a plurality of coils 612, and a transformer 614 are installed on the mounting surface 602, and the control board 710 and the circuit 712 are installed on the mounting surface 702. A plurality of reactor elements 610, a plurality of coils 612, a transformer 614, a control board 710, and a circuit 712 (hereinafter referred to as “circuit parts” or collectively referred to as “circuit parts”) are connected to each other. Since a known technique may be used for the configuration of the conversion circuit, description thereof is omitted here. Note that the circuit 712 includes a switch element.

  Since the electrical device configured in this manner generates heat, heat dissipation is required to suppress a temperature rise due to heat generation. Therefore, two exhaust fans 164 are provided on the inner case top surface 162. In particular, the two exhaust fans 164 are disposed on the positive side of the mounting surface 602 on which the electric device is mounted and the mounting surface 702 on the z axis. By such two exhaust fans 164, the air heated by the heat generated by the electrical equipment in the inner case 160 is output to the space between the main body case top surface 110 and the inner case top surface 162.

  Radiating fins 166 are provided outside the main body case top surface 110 opposite to the inner case top surface 162 where the exhaust fan 164 is provided. The heat radiating fins 166 exchange heat between the air outside the top surface 110 of the main body case and the air inside the top surface 110 of the main body case. Therefore, the air that is output to the space between the main body case top surface 110 and the inner case top surface 162 and is warmed is cooled by heat exchange. The cooled air passes through the storage space 150 to the inner wall 154 through an air path 810 formed in a portion sandwiched between the inner case side surface 168 and the main body case side surface 116. The air cools while exchanging heat through the body case side surface 116 while traveling through the air path 810. Thereafter, the air passes through the inner case opening 172 of the inner case bottom surface 170 or passes below the placement surface 702 to cool the electric device. Further, the air warmed by the electric device travels toward the exhaust fan 164, and thus the air is circulated.

(4) Electric Device Structure FIGS. 11 and 12 are perspective views showing the structure of the first heat sink 600. FIG. 11 shows the case where the reactor element 610 is installed, and FIG. 12 shows the reactor element 610 installed. The case where it is not done is shown. FIG. 13 is still another perspective view showing the structure of the first heat sink 600, which shows the opposite surface of FIG. 11 and FIG. The first heat sink 600 includes a mounting surface 602 and heat radiating fins 604. The placement surface 602 includes a first storage groove 620, a second storage groove 622, a third storage groove 624, and a fourth storage groove 626. Since a well-known technique should just be used for the reactor element 610, the coil 612, and the transformer 614, description is abbreviate | omitted here, but each of the several reactor element 610 has the non-planar connection surface 616. FIG. The coil 612 and the transformer 614 also have non-planar connection surfaces. The non-planar shape is, for example, a three-dimensional shape including a curved surface.

  In the first heat sink 600, heat radiating fins 604 are provided on one surface. On the other hand, in the first heat sink 600, on the mounting surface 602 opposite to the surface on which the heat radiating fins 604 are provided, a first storage groove 620, a second storage groove 622 for storing each of a plurality of circuit components, A third storage groove 624 and a fourth storage groove 626 are provided. The first storage groove 620 is a groove for storing the three reactor elements 610 in a line, and has a shape that is longer in the z-axis direction than in the y-axis direction. In addition, the second storage groove 622 is a groove that is disposed on the positive direction side of the first storage groove 620 in the y-axis and stores the two reactor elements 610 side by side.

  Reactor element 610 is stored in second storage groove 622 with connection surface 616 facing second storage groove 622. That is, the shape of the bottom of the second storage groove 622 is formed to match the shape of the connection surface 616. The same applies to the first storage groove 620, the third storage groove 624, and the fourth storage groove 626. In a state where circuit components are stored in the first storage groove 620 to the fourth storage groove 626, potting resin is injected into each of the first storage groove 620 to the fourth storage groove 626. As a result, the circuit component is fixed from the first storage groove 620 to the fourth storage groove 626. Since the first storage groove 620 to the fourth storage groove 626 are formed according to the shape of the connection surface of the circuit component, even if the connection surface of the circuit component is non-planar, the first storage groove 620 to the fourth storage groove 626 are stored. Storage of circuit components in the groove 626 is facilitated.

  The radiating fins 604 are fixed to the main body case rear surface 122 so as to face the rear cover rear surface 322. Therefore, even if heat is generated in the circuit components fixed from the first storage groove 620 to the fourth storage groove 626, the heat radiation fin 604 performs heat radiation to the outside of the main body case 100.

  FIG. 14 is a perspective view showing the structure of the second heat sink 700. The second heat sink 700 includes a mounting surface 702 and heat radiating fins 704. Since a known technique may be used for the control board 710 and the circuit 712 illustrated in FIG. 10, description thereof is omitted here, but each of the control board 710 and the circuit 712 has a planar connection surface. Direct to face 702.

  In the second heat sink 700, a heat radiating fin 704 is provided on one surface. On the other hand, in the 2nd heat sink 700, the mounting surface 702 on the opposite side to the surface in which the radiation fin 704 is provided is formed in planar shape. Although the control board 710 and the circuit 712 are fixed to the mounting surface 702 by potting resin, all of the mounting surface 702, the control board 710, and the circuit 712 have flat surfaces, so that the fixing is easy. The heat radiation fins 704 are fixed to the main body case rear surface 122 so as to face the rear cover rear surface 322. Therefore, even if heat is generated in the circuit component fixed to the mounting surface 702, the heat radiation fin 704 performs heat radiation to the outside of the main body case 100.

  Unlike the first heat sink 600 in which the first storage groove 620 and the like are formed on the mounting surface 602, a general-purpose product can be used for the second heat sink 700 in which the mounting surface 702 is flat. Therefore, using the second heat sink 700 suppresses an increase in manufacturing cost. In addition, since circuit components having non-planar connection surfaces are collected in the first heat sink 600 and circuit components having flat connection surfaces are collected in the second heat sink 700, a plurality of circuit components can be easily mounted.

According to the present embodiment, it is possible to provide the electric equipment 1000 having a structure suitable for the outdoors so as to improve the above-described situations (i) to (ix).
(I) Since a double structure of the front cover top surface 210 and the main body case top surface 110 is formed, the presence of an air layer between the front cover top surface 210 and the main body case top surface 110 may cause condensation. Can be suppressed. Moreover, since the double structure of the front cover top surface 210 and the main body case top surface 110 is formed, waterproofness can be improved.
(Ii) Since a double structure of the front cover top surface 210 and the main body case top surface 110 is formed, the main body case caused by solar radiation is caused by the presence of an air layer between the front cover top surface 210 and the main body case top surface 110. The temperature rise inside 100 can be suppressed.
(Iii) Since the main body case 100 is surrounded by the front cover 200 and the rear cover 300, the main body case 100 can be prevented from being exposed. Moreover, since exposure of the main body case 100 is prevented, it can suppress that an external appearance is impaired irrespective of the structure of the main body case 100. FIG.

(Iv) Since a plurality of cutout portions 314 having a recessed shape are provided in the rear flange 312, even if heat is generated inside the main body case 100, heat dissipation can be promoted. Further, since the heat radiation port 212 is opened in the front cover top surface 210, the air path 800 can be formed in the space sandwiched between the main body case side surface 116 and the front cover side surface 216. In addition, since the air path 800 is formed in the space between the main body case side surface 116 and the front cover side surface 216, heat can be radiated through the air path 800 even if heat is generated inside the main body case 100. Further, since the heat radiating fins 166 are provided on the outer side of the surface facing the one surface of the inner case 160 where the exhaust fan 164 is provided, warm air output from the exhaust fan 164 can be radiated by the heat radiating fins 166. Moreover, since the air path 810 is formed in the portion sandwiched between the inner case side surface 168 and the main body case side surface 116, air can be circulated. Moreover, since the air circulates, the electric equipment can be cooled. Further, since the conversion circuit is housed as an electric device, the conversion circuit can be cooled.

(V) Since the pipe cover 400 has a size larger than the bottom opening 128, it is possible to suppress water from entering between the pipe cover 400 and the bottom opening 128. Moreover, since the piping cover 400 has the piping hole 402, piping can be passed through with the piping cover 400 connected to the main body case 100. Moreover, since the waterproof wall 410 surrounding the piping hole 402 is erected in the piping cover 400, it is difficult for water that has entered the waterproof groove 420 to flow into the piping hole 402 side. Further, since the waterproof groove portion 420 surrounding the waterproof wall 410 is provided and the drainage hole 430 is provided in the waterproof groove portion 420, the water flowing through the waterproof groove portion 420 can be discharged from the drainage hole 430. In addition, since the water flowing through the waterproof groove 420 is discharged from the drain hole 430, the intrusion of water from the pipe cover 400 into the main body case 100 can be suppressed. In addition, water entry from the piping cover 400 to the inside of the main body case 100 is suppressed, so that waterproofness can be improved.

  In addition, since the wiring straddling between the main body case rear surface 122 and the rear cover rear surface 322 is covered by the wiring cover 500, even if water enters between the main body case rear surface 122 and the rear cover rear surface 322, the wiring is wetted. Can be prevented. Further, since the wiring is prevented from getting wet, the waterproof property can be improved. Moreover, although an electric wire is drawn in by a wall surface and exposed piping, the intrusion risk of the water and dust of this drawing-in part can be reduced. In addition, it is possible to reduce the risk that storms or dust during a storm will enter the interior from the retracted part. Moreover, since the lower part opened in the cover part 520 is covered with the piping cover 400, the penetration | invasion of the water from the downward direction can be suppressed. Moreover, since the piping cover 400 and the wiring cover 500 are connected, the piping drawing-in position and the wiring drawing-in position are combined, and the positions to be waterproofed can be collected.

(Vi) Since the terminal portion 156 is disposed on the opening space 152 side, piping or wiring can be prevented from being inserted into the storage space 150. Moreover, since piping or wiring is not inserted into the storage space 150, it is not necessary to provide a hole for passing the piping or wiring in the inner wall 154, and water or dust can be prevented from entering the storage space 150. Also. Since the inner wall 154 is provided, the waterproof property of the storage space 150 can be improved.
(Vii) Since the second flange 512 and the rear cover back surface 322 are connected while sandwiching the sealing member, the connection can be strengthened. In addition, since the connection becomes strong, deterioration of waterproofness can be suppressed. In addition, since the deterioration of waterproofness is suppressed, the maintenance burden on the electrical equipment 1000 can be reduced.

(Viii) Since the handle portion 118 is provided on the side surface 116 of the main body case, the safety can be improved by having the handle portion 118 at the time of installation. In addition, since the handle portion 118 supports the front cover side surface 216, the front cover side surface 216 can be thinned. Moreover, since the front cover side surface 216 is thinned, the electric equipment 1000 can be reduced in weight. In addition, since the handle portion 118 supports the front cover side surface 216, the bending of the front cover side surface 216 can be suppressed. Further, since the piping cover 400 is attached to the bottom face 126 of the main body case after passing the piping through the piping hole 402 when installing the electrical equipment 1000, the workability at the time of installation can be improved. In addition, in the rear cover 300, the shielding plate 350 is provided above the rear opening 328, so that water can be prevented from entering during installation.

(Ix) Since the first storage groove 620 to the fourth storage groove 626 are formed according to the shape of the connection surface of the circuit component, even if the connection surfaces of the reactor element 610, the coil 612, and the transformer 614 are non-planar. These can be easily stored in the first heat sink 600. Moreover, since it becomes easy to store the reactor element 610, the coil 612, and the transformer 614 in the first heat sink 600, an increase in manufacturing cost can be suppressed. Further, unlike the first heat sink 600 in which the first storage groove 620 and the like are formed on the mounting surface 602, a general-purpose product can be used for the second heat sink 700 in which the mounting surface 702 is flat. In addition, an increase in manufacturing cost can be suppressed by using the general-purpose second heat sink 700. In addition, since circuit components having a non-planar connection surface are collected on the first heat sink 600 and circuit components having a flat connection surface are collected on the second heat sink 700, a plurality of circuit components can be easily mounted. Moreover, since it becomes easy to mount a plurality of circuit components, an increase in manufacturing cost can be suppressed.

  In addition to the effects described so far, according to the present embodiment, the following effects can also be obtained. Since the main body case top surface 110 is provided with the main body flange 112 and the rear surface cover top surface 310 is provided with the rear surface flange 312, it is possible to temporarily shield water wound up in the wind due to a storm or the like. Moreover, since the water wound up by the wind in storms etc. is shielded temporarily, waterproofness can further be improved. Further, the main body case top surface 110 is provided with the main body flange 112, and the rear cover top surface 310 is provided with the rear surface flange 312. Therefore, it can be used for alignment when the front cover 200 is attached. Since the main body flange 112 and the rear surface flange 312 are used for alignment when the front cover 200 is attached, the installation of the electric equipment 1000 can be facilitated.

  Further, since the first heat sink 600 and the second heat sink 700 having a shorter vertical length than the first heat sink 600 are arranged side by side, the space below the second heat sink 700 is lower than the space below the first heat sink 600. Can be wider. Further, since the bottom opening 128 and the main body opening 130 are disposed below the second heat sink 700, such a space can be used effectively.

The outline of one embodiment of the present invention is as follows.
[Item 1-1]
A main body case (100) for storing electrical equipment;
A front cover (200) disposed in front of the main body case (100);
A rear cover (300) disposed behind the body case (100),
The main body case top surface (110) is covered with at least one of a front cover top surface (210) and a rear cover top surface (310).

[Item 1-2]
The front cover top surface (210) is disposed above the main body case top surface (110) and the rear cover top surface (310),
The main body case top surface (110) is provided with a main body flange (112) protruding toward the front cover (200),
The electrical equipment (1000) according to item (1-1), characterized in that a rear flange (312) protruding toward the front cover (200) is provided on the top surface (310) of the rear cover.

[Item 1-3]
The electrical equipment (1000) according to item (1-2), wherein the rear flange (312) is provided with a notch (314) or a heat radiation port.
[Item 1-4]
A heat radiation port (212) is opened in the front cover top surface (210),
From the items (1-1) to (1), the heat radiating port (212) is arranged above the air path (800) sandwiched between the main body case side surface (116) and the front cover side surface (216). -3) The electrical equipment of any one of (1000).
[Item 1-5]
A handle (118) is provided on the side surface (116) of the main body case,
The electrical equipment (1000) according to any one of items (1-1) to (1-4), wherein the handle portion (118) supports the front cover side surface (216).

[Item 1-6]
A bottom cover (128) provided on the bottom surface (126) of the main body case, and a pipe cover (400) covering the bottom surface opening (128) from below to insert the pipe from below into the main body case (100). In addition,
The pipe cover (400) has a size larger than the bottom opening (128) and has a pipe hole (402) through which the pipe passes, and the items (1-1) to (1-5) Electrical equipment (1000) given in any 1 paragraph.
[Item 1-7]
The electrical equipment (1000) according to item (1-6), wherein the pipe cover (400) is provided with a waterproof wall (410) surrounding the pipe hole (402).

[Item 1-8]
The pipe cover (400) is provided with a waterproof groove (420) surrounding the waterproof wall (410),
The electrical equipment (1000) according to item (1-7), wherein the waterproof groove (420) is provided with a drain hole (430) penetrating the pipe cover (400).
[Item 1-9]
The main body case (100) is provided with an inner wall (154) that separates a storage space (150) in which an electric device is to be stored and a bottom opening (128).
Any one of items (1-6) to (1-8) is characterized in that a terminal portion (156) for connecting a pipe is provided on the bottom opening (128) side of the inner wall (154). Electrical installation as described (1000).

[Item 2-1]
A main body case (100) for storing electrical equipment;
A rear cover (300) disposed behind the body case (100);
A wiring cover (500) disposed between the rear cover (300) and the main body case (100);
The rear cover (300) is provided with a rear opening (328) through which wiring is passed,
A surface of the main body case (100) facing the rear cover (300) is provided with a main body opening (130) for inserting the wiring from the rear surface opening (328) into the main body case (100).
The wiring cover (500) surrounds at least a part of the rear opening (328) and a first flange (510) connected to the main body case (100) while enclosing at least a part of the main body opening (130). A second flange (512) connected to the rear cover (300), and a cover part (520) for connecting the first flange (510) and the second flange (512) to cover the wiring are provided. Electrical installation (1000).

[Item 2-2]
The second flange (512) is provided with a sealing groove (530) for disposing a sealing member,
The electrical equipment (1000) according to item (2-1), wherein the second flange (512) and the rear cover (300) are connected while sandwiching the sealing member.
[Item 2-3]
The rear cover (300) is provided with a shielding plate (350) protruding toward the main body case (100) above the rear opening (328), and the item (2-1) or (2- Electrical equipment (1000) as described in 2).
[Item 2-4]
The main body case (100) is provided with an inner wall (154) that separates a storage space (150) in which an electric device is to be stored and a main body opening (130).
Any one of items (2-1) to (2-3) is characterized in that a terminal portion (156) for connecting wiring is provided on the inner wall (154) on the main body opening (130) side. Electrical installation as described (1000).

[Item 2-5]
The main body case (100) is provided with a first heat sink (600) and a second heat sink (700) having a shorter vertical length than the first heat sink (600),
The electrical equipment (1000) according to any one of items (2-1) to (2-4), wherein the main body opening (130) is disposed below the second heat sink (700). .
[Item 2-6]
A bottom opening (128) provided in the vicinity of the main body opening (130) on the bottom surface (126) of the main body case, and a bottom opening (128) for inserting a pipe from below into the main body case (100). A pipe cover (400) covering the bottom from below,
The pipe cover (400) has a size larger than the bottom opening (128) and has a pipe hole (402) through which the pipe passes.
The electrical equipment (1000) according to any one of items (2-1) to (2-5), wherein a lower part opened in the cover part (520) is covered with a pipe cover (400). ).

[Item 3-1]
An inner case (160) for storing electrical equipment;
A main body case (100) for housing the inner case (160),
An exhaust fan (164) is provided on one surface of the inner case (160),
In the main body case (100), the electric equipment (1000) is characterized in that a heat radiating fin (166) is provided on the outer side of the surface facing the one surface of the inner case (160) where the exhaust fan (164) is provided.

[Item 3-2]
The exhaust fan (164) is disposed on the inner case top surface (162) which is the inner case top surface (162) and above the storage space (150) in which the electrical equipment is to be stored.
The electric equipment (1000) according to item (3-1), wherein an air path (810) is formed in a portion sandwiched between the inner case side surface (168) and the main body case side surface (122).
[Item 3-3]
The inner case (160) houses, as an electric device, a conversion circuit that converts DC power into AC power, and the electrical equipment (1000) according to item (3-1) or (3-2).
[Item 3-4]
The inner case (160) is an electrical facility (1000) according to any one of items (3-1) to (3-3), wherein a secondary battery is housed as an electrical device.

[Item 4-1]
Multiple circuit components,
A main body case (100) for storing a plurality of circuit components,
Each of the plurality of circuit components has a non-planar connection surface (616),
The main body case (100) is provided with a first heat sink (600) for connecting a plurality of circuit components,
A first storage groove (620) for storing each of the plurality of circuit components from the connection surface (616) side is provided on a surface of the first heat sink (600) opposite to the surface on which the heat dissipating fins (604) are provided. The electrical installation (1000), wherein a plurality of two storage grooves (622), a third storage groove (624), and a fourth storage groove (626) are provided.
[Item 4-2]
The electrical equipment (1000) according to item (4-1), wherein the plurality of circuit components include a reactor element (610).

[Item 4-3]
The body case (100) also accommodates another type of circuit component having a planar connection surface,
The main body case (100) is also provided with a second heat sink (700) for connecting another type of circuit component,
The surface of the second heat sink (700) opposite to the surface on which the heat dissipating fins (704) are provided is formed in a planar shape, according to item (4-1) or (4-2), Electrical installation (1000).
[Item 4-4]
Another type of circuit component includes the switch element, and the electrical installation (1000) according to item (4-3).

  In the above, this invention was demonstrated based on the Example. This embodiment is an exemplification, and it will be understood by those skilled in the art that various modifications can be made to each of those constituent elements or combinations of processing processes, and such modifications are also within the scope of the present invention. .

  In the present embodiment, the inner case 160 houses a conversion circuit as an electrical device. However, the present invention is not limited to this. For example, the inner case 160 may contain a secondary battery as an electric device. According to this modification, the degree of freedom of configuration can be improved.

  DESCRIPTION OF SYMBOLS 100 Main body case (outer case), 110 Main body case top surface (Top surface of main body case), 112 Main body flange, 116 Main body case side surface, 118 Handle part, 122 Main body case back surface, 124 Bottom cover, 126 Main body case bottom surface, 128 Bottom surface Opening portion, 130 body opening portion, 132 fixing bracket, 134 piping hole, 150 storage space, 152 opening space, 154 inner wall, 156 terminal portion, 160 inner case, 162 inner case top surface, 164 exhaust fan, 166 radiating fin, 168 Inner case side surface, 170 Inner case bottom surface, 172 Inner case opening, 180 Electrical equipment lid, 200 Front cover, 210 Front cover top surface (top surface of the front cover), 212 Heat radiation port, 216 Front cover side surface, 220 Front cover Front, 300 Rear cover, 310 Rear cover top (back cover top), 312 Rear flange, 314 Notch, 316 Rear cover side, 322 Rear cover back, 326 Rear cover bottom, 328 Rear opening, 350 Shielding Plate, 360 Slit, 400 Piping cover, 402 Piping hole, 404 Cover bottom, 410 Waterproof wall, 420 Waterproof groove, 430 Drain hole, 500 Wiring cover, 510 1st flange, 512 2nd flange, 514 3rd flange, 520 cover , 530 sealing groove, 600 first heat sink (heat sink), 602 mounting surface, 604 heat radiation fin, 610 reactor element (circuit component), 612 coil (circuit component), 614 transformer (circuit component), 616 620 first storage groove (storage groove), 622 second storage groove (storage groove), 624 third storage groove (storage groove), 626 fourth storage groove (storage groove), 700 second heat sink (another surface) Heat sink), 702 mounting surface, 704 heat radiation fin, 710 control board (circuit component), 712 circuit (circuit component), 800,810 air path (air path), 1000 electrical equipment.

Claims (4)

An inner case for storing electrical equipment,
An outer case for storing the inner case;
An exhaust fan is provided on one surface of the inner case,
In the outer case, a heat radiating fin is provided on the outer side of a surface facing the one surface of the inner case where the exhaust fan is provided. The exhaust fan is a top surface of the inner case, and is disposed on a top surface above a portion in which the electrical equipment is to be stored,
The electrical equipment according to claim 1, wherein an air path is formed in a portion sandwiched between a side surface of the inner case and a side surface of the outer case.   The electrical equipment according to claim 1, wherein the inner case houses a conversion circuit that converts direct current power into alternating current power as the electrical device.   The electrical equipment according to claim 1, wherein the inner case houses a secondary battery as the electrical device.

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