JP5560078B2 - Power supply - Google Patents

Description

  The present invention relates to a power supply apparatus for welding, for example, and more particularly to a power supply apparatus provided with a fan and an air passage for cooling air.

  A conventional power supply device for welding includes a plurality of parts for configuring a power supply circuit, a longitudinally extending air passage, and a fan for sending air to the air passage (for example, Patent Documents). 1). In the power supply device disclosed in this document, a plurality of components are arranged along the side wall of the air passage, and a fan is provided at one end in the longitudinal direction of the air passage. The wind sent into the air passage by the fan blows out from the outlet at the other end in the longitudinal direction of the air passage while taking heat from each component. Parts that are particularly likely to generate heat are arranged in the vicinity of the fan so as to be efficiently air-cooled.

  Such a power supply device for welding is used in an atmosphere environment with a lot of dust such as a factory, and dust easily enters and accumulates in the air passage. For this reason, when operating the power supply device, for example, a dust removal operation is required in which an air blow gun is directed from the outlet of the air passage to the inside thereof, and dust inside is periodically blown off by injection of compressed air.

  However, in the above-described conventional power supply device, the parts far from the fan are more difficult to cool than those near the fan, and the cooling effect varies depending on the position of the parts. There was a problem that it was not possible to cool efficiently. Such a problem is particularly noticeable for components such as reactors and transformers that are relatively large and generate large amounts of heat.

  Furthermore, since it is necessary to place a component that generates a large amount of heat in the vicinity of the fan in the device, the position of the component in the device or on the circuit board is restricted, and the degree of freedom of component placement is not so high. is there.

  In dust removal work, the compressed air injected from the outlet of the air passage toward the inside is likely to directly hit the fan located at one end in the longitudinal direction of the air passage, so the fan may be reversed at a high speed and damaged. There is.

JP 2008-229644 A

  The present invention has been conceived under the above circumstances, and provides a power supply device capable of efficiently cooling various parts to be cooled without impairing the degree of freedom of arrangement of the parts. Is the issue.

  In order to solve the above problems, the present invention takes the following technical means.

A power supply device provided by the present invention includes a longitudinally extending air passage, a partition plate that defines the air passage, a fan that sends air into the air passage, and a plurality of components that are disposed along the air passage. A power supply device configured to be cooled by wind passing through the air path, wherein the partition plate has an opening facing the air path, and the plurality of parts Includes an electrical component that fits into the opening, a part of the electrical component is exposed to the air passage, the electrical component is a reactor or a transformer, and a main body portion thereof is the air passage. The body portion includes a core portion, a winding portion wound around the core portion, and a resin cover that seals the opening and covers the core portion and the winding portion. The resin cover is integrated with multiple heat dissipating fins. By which, and the plurality of heat radiation fins extend in the longitudinal direction of the air path in the end face of the resin cover, and is characterized in Rukoto lined in the lateral direction of the air duct.

  In a preferred embodiment of the present invention, the fan is disposed at a longitudinal intermediate portion of the air passage, and both longitudinal end portions of the air passage serve as wind outlets.

  In preferable embodiment of this invention, the said fan is arrange | positioned so that a wind may be ejected in the direction orthogonal to the longitudinal direction of the said air path.

  According to the said structure, the part exposed to the said air path of the said electrical component will be directly cooled by the wind sent in the said air path by the said fan. For this reason, it becomes possible to cool the said electrical component efficiently. Furthermore, since the electric component can be efficiently cooled, the electric component can be installed at a position farther from the fan than before, and the degree of freedom in arranging the electric component is increased. Therefore, according to the present invention, it is difficult to impair the degree of freedom of arrangement of the plurality of components, and the electrical components can be efficiently cooled.

  Other features and advantages of the present invention will become more apparent from the detailed description given below with reference to the accompanying drawings.

It is a side view which shows an example of embodiment of the power supply device which concerns on this invention. It is a figure of the II arrow direction of FIG. It is sectional drawing which follows the III-III line of FIG. It is sectional drawing which follows the IV-IV line of FIG. It is sectional drawing which follows the VV line of FIG. It is sectional drawing which follows the VI-VI line of FIG. It is sectional drawing which follows the VII-VII line of FIG. It is a perspective view which shows an example of the electrical component shown in FIG. It is sectional drawing which follows the IX-IX line of FIG. It is sectional drawing which follows the XX line of FIG. It is sectional drawing which shows another example of the electrical component shown in FIG.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

  1 to 7 show an embodiment of a power supply device according to the present invention. The power supply device A of this embodiment is used, for example, to output a large current and a high voltage necessary for arc welding. The power supply device A is generally used in an atmosphere environment with a lot of dust such as a factory.

  The power supply device A includes a base member 1, a housing cover 2, a plurality of electronic components 30 and electrical components 31 and 32 that constitute a power supply circuit, a heat sink 5, a first partition plate 6, second partition plates 7 </ b> A and 7 </ b> B, A third partition plate 7C and first and second fans 8 and 8 'for cooling are provided. In the apparatus, a first air passage 9 surrounded by a lower portion of the second partition plate 7A, the third partition plate 7C, and a part of the base member 1 is provided. Separately from the air path 9, the first partition plate 6, the upper portion of the second partition plate 7 </ b> A, the second partition plate 7 </ b> B, and the third partition plate 7 </ b> C are surrounded by a part of the first partition plate 6. Two air passages 9 'are provided. These first and second air passages 9 and 9 ′ extend in the longitudinal direction in the front-rear direction of the power supply device A (hereinafter referred to as “F direction”). Inside the apparatus, outside of the first and second air passages 9 and 9 ′, a part of the base member 1, the housing cover 2, the first partition plate 6, and the second partition plate 7 A are surrounded. An arrangement space B1 is provided. Further, the fan 8 surrounded by a part of the base member 1, a part of the housing cover 2, a part of the first partition plate 6, a second partition plate 7B, and a part of the third partition plate 7C. , 8 'is provided. The arrangement space B1 is continuous with the space above the first partition plate 6.

  The base member 1 is a long rectangular flat plate member that is long in the F direction. A plurality of wheels 10 are pivotally supported on the lower surface of the base member 1 via brackets. The base member 1 can move on the floor surface by these wheels 10. As shown in FIG. 3, a second partition plate 7 </ b> A is arranged at the center of the upper surface of the base member 1 perpendicular to the upper surface of the base member 1. A third partition plate 7C is arranged so as to surround the lower partial one surface of the second partition plate 7A and a part of the upper surface of the base member 1.

  The housing cover 2 is made of, for example, metal and is for protecting the inside of the apparatus. The housing cover 2 has a box shape that can be attached to and detached from the base member 1, and has two side surfaces 2 </ b> A and 2 </ b> B that form a vertical surface along both sides of the base member 1, and the front end and the rear of the base member 1. It has the front part 2C and back part 2D which make a vertical surface along an edge part. In one side surface portion 2A, in the region near both ends in the F direction, an intake hole portion 20 for guiding external air to the arrangement space B2 of the first and second fans 8 and 8 'is provided. The intake hole 20 is composed of a large number of relatively small slit holes. In the front portion 2C and the rear portion 2D, ventilation holes 21 are provided in regions corresponding to the first and second air passages 9 and 9 'to guide the air from the air passages 9 and 9' to the outside. ing. The ventilation hole portion 21 is composed of a relatively large number of holes for good ventilation.

  The first partition plate 6 is made of metal, for example, and as shown in FIG. 3, a space such as the arrangement space B2 of the first and second fans 8 and 8 ′ and the second air passage 9 ′ and the electronic component 30. Is separated from the arrangement space B1. The first partition plate 6 has the same length as that of the base member 1 in the F direction, and one end in the short-side direction is vertically joined to the upper end of the second partition plate 7A. As a result, the first partition plate 6 is positioned horizontally at the middle portion in the vertical direction of the housing cover 2. The first partition plate 6 forms an upper wall of the arrangement space B2 of the fans 8, 8 'and the second air passage 9'.

The second partition plate 7A is made of, for example, metal, and partitions the first and second air paths 9, 9 ′ from the arrangement space B1. The second partition plate 7 </ b> A has the same F-direction dimension as the base member 1, and is disposed perpendicular to the base member 1 and the first partition plate 6. That is, the second partition plate 7A forms a vertical wall of the first and second air passages 9, 9 ′. The lower part of the second partition plate 7A is provided with openings 71 and 72 through which the electrical components 31 and 32 can be fitted. As shown in FIG. 3 , the heat sink 5 is disposed on the upper side of one side that is inside the air passage 9 ′ of the second partition plate 7 </ b> A. Further, the second partition plate 7A is provided with an opening 73 for exposing a part of the heat sink 5 to the arrangement space B1.

  The second partition plate 7B is made of, for example, metal, and partitions the second air passage 9 'and the arrangement space B2. The second partition plate 7 </ b> B also has the same size in the F direction as the base member 1. The second partition plate 7B is disposed so as to face the upper portion of the second partition plate 7A, and the upper end and the lower end thereof are perpendicular to the first partition plate 6 and the third partition plate 7C. Be joined. That is, the second partition plate 7B forms a vertical wall of the second air passage 9 '. An opening 70 'for allowing the second fan 8' to face the second air passage 9 'is provided in the intermediate portion in the F direction of the second partition plate 7B (see FIG. 7).

  Third partition plate 7 </ b> C is made of, for example, metal and has an L-shaped cross section surrounding first air passage 9. The third partition plate 7 </ b> C also has the same dimension in the F direction as the base member 1. The distal end of the horizontal portion of the third partition plate 7C is joined perpendicularly to the central portion of the second partition plate 7A, while the proximal end of the vertical portion is joined perpendicularly to the base member 1. Thereby, the horizontal portion of the third partition plate 7C forms the upper wall of the first air passage 9 and the bottom wall of the second air passage 9 ', and the vertical portion thereof is below the second partition plate 7A. A vertical wall of the first air passage 9 facing the side portion is formed. An opening 70 for allowing the first fan 8 to face the first air passage 9 is provided in an intermediate portion in the F direction in the vertical portion of the third partition plate 7C (see FIG. 6).

  The heat sink 5 is a heat radiating member made of, for example, aluminum, and includes a base 50 fixed to one surface of the second partition plate 7A, and a plurality of fins extending from one end surface of the base 50 and extending in the F direction and aligned in the vertical direction. 51. The base 50 seals the opening 73 formed in the second partition plate 7A. Most of the other end surface of the base 50 is exposed from the opening 73 to the arrangement space B1. The plurality of fins 51 are portions that efficiently dissipate heat transferred from the base 50 into the air, and have a large surface area in order to enhance the heat dissipation effect. As shown in FIG. 7, the heat sink 5 is approximately the same as or shorter than the entire length of the air passage 9 'in the F direction. In the present embodiment, the heat sink 5 is a cooling target. In addition, the heat sink 5 may be arrange | positioned so that two or more may be located in a line with the 2nd partition plate 7A.

  The plurality of electronic components 30 are switching elements, diodes, capacitors, and the like, and are directly installed on the other end surface of the base 50 exposed to the arrangement space B1 from the opening 73 of the second partition plate 7A. Heat from each electronic component 30 is quickly transmitted to the heat sink 5.

The electrical component 31 is a transformer, for example, and has a main body 31A and five terminal portions 31B as shown in FIGS. As shown in FIG. 9, the main body portion 31 </ b> A includes a core portion 311, a primary winding portion 312, a secondary winding portion 313, a support member 314, and a resin cover 315. The core part 311 is, for example, a U-shaped or E-shaped metal core. The primary and secondary winding portions 312 and 313 are wound around the core portion 311 so as to form coils. In this embodiment, the primary winding part 312 is arrange | positioned so that the secondary winding part 313 may be pinched | interposed. The support member 314 is fixed by sandwiching the core portion 311 between the plate-like bottom portion 314A and the lid portion 314B. The bottom portion 314A, the lid portion 314B, and the core portion 311 are fixed by a plurality of screws 314a. The resin cover 315 is formed of, for example, urethane resin, epoxy resin, or silicone resin so as to cover the core portion 311, the primary winding portion 312, the secondary winding portion 313, and the bottom portion 314A of the support member 314. . The resin cover 315 is fitted into an opening 71 described later so that one end 315a faces the first air passage 9 and the other end 315b faces the arrangement space B1. A plurality of heat radiating fins 316 are formed on one end side 315 a of the resin cover 315. The five terminal portions 31B are provided so as to protrude from the other end portion 315b of the resin cover 315. Each terminal portion 31B is connected to both ends of the primary winding portion 312, both ends of the secondary winding portion 313, and appropriate positions of the secondary winding portion 313, respectively.

  The plurality of radiating fins 316 are formed so as to extend in the F direction and to be arranged in the vertical direction. Each radiating fin 316 has a triangular cross section as shown in FIG.

  Furthermore, a pair of connection fittings 33 is attached to the electrical component 31. As shown in FIG. 8, the connection fitting 33 is attached to the resin cover 315 in advance before the electric component 31 is assembled into the power supply device A. As shown in FIG. 9, each connection fitting 33 has an L-shaped cross section and is composed of a pair of plate pieces 33 </ b> A and 33 </ b> B that are orthogonal to each other. A long hole 33a is formed in the plate piece 33A so that the thickness direction of the second partition plate 7A is the longitudinal direction. A screw hole 33b that penetrates in the thickness direction of the partition plate 7A is formed in the plate piece 33B. The connection fitting 33 is attached to the resin cover 315 by a screw 331 fitted into the long hole 33a. The electrical component 31 is fixed to the second partition plate 7A through a screw 332 and a nut 333 that are passed through the screw hole 33b. According to such an attachment structure, by loosening the screw 331, the resin cover 315 can be moved in the thickness direction of the partition plate 7A by the length in the longitudinal direction of the long hole 33a.

  The electrical component 32 is a reactor, for example, and has a main body portion 32A and a terminal portion 32B. As shown in FIG. 10, the main body portion 32 </ b> A includes a core portion 321, a winding portion 322 wound around the core portion 321, a fixing member 323 that fixes the core portion 321, and a resin cover that holds the fixing member 323. 324. The electrical component 32 is fitted into an opening 72 to be described later, and is fixed to the second partition plate 7 </ b> A using a connection fitting 33 similar to that used for the electrical component 31. The connection fitting 33 is attached to the resin cover 324. According to such a mounting structure, by loosening the screw 331, the resin cover 324 can be moved in the thickness direction of the partition plate 7A by the length in the longitudinal direction of the long hole 33a.

  The electrical components 31 and 32 used in such a power supply device A tend to be relatively large and heavy, and the resin covers 315 and 324 projecting into the first air passage 9 have a weight balance when fixed. It is desirable to adjust the amount. First, the amount of the resin covers 315 and 324 protruding into the first air passage 9 can be adjusted by setting the attachment position of the connection fitting 33 with respect to the resin covers 315 and 324. Furthermore, in this embodiment, even after the connection fitting 33 is attached to the resin covers 315 and 324 and fixed to the second partition plate 7A, the resin covers 315 and 324 are partitioned by loosening the screws 331 as described above. The position can be adjusted by moving in the thickness direction of the plate 7A. By retightening the screw 331 after the movement, the resin covers 315 and 324 can be fixed at the moved position.

  The first and second fans 8 and 8 'are, for example, axial flow types in which a plurality of blades and an electric motor are integrated.

  As shown in FIG. 3, the first fan 8 has an air suction port 80 and a discharge port 81. The first fan 8 is disposed such that the discharge port 81 coincides with the opening 70 of the third partition plate 7C. That is, the first fan 8 is disposed in the middle in the longitudinal direction of the first air passage 9 and is positioned so that the discharge port 81 faces the inside of the air passage 9. Thereby, the blowing direction of the first fan 8 is a direction that intersects the longitudinal direction of the first air passage 9 in the horizontal plane. The suction port 80 is located in the arrangement space B2 and faces the inner surface of the side surface portion 2A with a predetermined interval. The suction hole 20 is not provided in the front area of the suction port 80 in the side surface portion 2A. That is, the suction port 80 is located at a certain distance from the suction hole 20 located near both ends of the side surface 2A in the F direction.

  As shown in FIG. 3, the second fan 8 'has an air suction port 80' and a discharge port 81 '. The second fan 8 'is disposed with the discharge port 81' aligned with the opening 70 'of the second partition plate 7B. That is, the second fan 8 'is disposed in the middle portion in the longitudinal direction of the second air passage 9', and is positioned so that the discharge port 81 'faces the inside of the air passage 9'. As a result, the blowing direction of the second fan 8 'is a direction that intersects the longitudinal direction of the second air passage 9' in the horizontal plane. The suction port 80 'is located in the arrangement space B2 and faces the inner surface of the side surface portion 2A with a predetermined interval. The suction hole 20 is not provided in the front area of the suction port 80 ′ in the side surface 2 </ b> A. That is, the suction port 80 ′ is located to some extent away from the suction hole 20 located near both ends in the F direction of the side surface 2 </ b> A.

  As shown in FIG. 6, the first air passage 9 directly cools the electrical components 31 and 32 by the wind from the first fan 8 and guides the wind to both ends in the longitudinal direction. The first air passage 9 has a lower portion of the second partition plate 7A and a vertical portion of the third partition plate 7C as a pair of vertical walls facing each other in the width direction, and further the horizontal of the third partition plate 7C. The portion and a part of the base member 1 are surrounded as an upper wall and a bottom wall facing each other in the vertical direction, and are formed in a rectangular cross section. Both ends in the longitudinal direction of the first air passage 9 serve as outlets 90 from which the wind blows. The wind sent from the first fan 8 to the first air passage 9 directly hits the main body portion 32A of the electrical component 32 and is split into two ends in the longitudinal direction of the first air passage 9. Furthermore, the one hand flows along the radiation fins 316 of the main body 31A of the electrical component 31. Therefore, the wind sent from the first fan 8 to the first air passage 9 blows out from the outlet 90 while taking a lot of heat from the main body portions 31A and 32A. That is, the distance that the wind flows from the first fan 8 to the outlet 90 in the first air passage 9 is shorter than the entire length of the first air passage 9, and the air is quickly discharged to the outside. . Thereby, the electrical components 31 and 32 are efficiently air-cooled by the wind flowing through the first air passage 9. The wind that blows out from the outlet 90 quickly blows out to the outside through the vent holes 21 provided in the front part 2C and the back part 2D of the housing cover 2.

  As shown in FIG. 7, the second air passage 9 ′ cools the heat sink 5 with the wind from the second fan 8 ′ and guides the wind to both ends in the longitudinal direction. The second air passage 9 ′ has an upper portion of the second partition plate 7A and the second partition plate 7B as a pair of vertical walls facing each other in the width direction, and a part of the first partition plate 6 and the second partition plate 7B. The horizontal portion of the third partition plate 7C is surrounded as an upper wall and a bottom wall facing each other in the vertical direction, and is formed in a rectangular cross section. Both longitudinal ends of the second air passage 9 'serve as outlets 90' through which the wind blows. The wind sent from the second fan 8 ′ into the second air passage 9 ′ directly hits the heat sink 5 and splits into two ends in the longitudinal direction of the second air passage 9 ′. It blows out from the exit 90 'taking a lot of heat. That is, the distance that the wind flows from the second fan 8 ′ to the outlet 90 ′ in the second air passage 9 ′ is also shorter than the entire length of the second air passage 9 ′. Discharged. Thereby, the electronic component 30 is efficiently cooled via the heat sink 5. The wind that blows out from the outlet 90 ′ quickly blows out through the vent hole 21 provided in the front part 2 </ b> C and the back part 2 </ b> D of the housing cover 2.

  Next, the operation of the power supply device A will be described.

  In the power supply device A, as a large current and a high voltage for welding are output, the plurality of electronic components 30 and the electrical components 31 and 32 generate heat and their temperature increases. In particular, the electrical components 31, 32 such as transformers and reactors generate a large amount of heat during operation and have a relatively large outer size.

  In the electrical component 31, heat generated in the primary and secondary winding portions 312 and 313 is transmitted to the resin cover 315 through the core portion 311. The resin cover 315 has a plurality of heat radiation fins 316 and has a large surface area. Further, the plurality of heat radiating fins 316 are exposed to the first air passage 9 from the opening 71 and directly come into contact with the air sent by the fan 8. For this reason, in the power supply device A, the heat generated in the primary and secondary winding portions 312 and 313 when the electric component 31 is driven is efficiently removed, and the electric component 31 is cooled.

  In the electrical component 32, the core portion 321 and the winding portion 322 are exposed to the first air passage 9 from the opening 72, and are directly cooled by the wind sent from the first fan 8. For this reason, in the power supply device A, the heat generated in the winding part 322 when the electric component 32 is driven is efficiently taken, and the electric component 32 is cooled.

  Furthermore, in this embodiment, the several radiation fin 316 is arrange | positioned so that the F direction may be followed, and the air flows through the inside of the 1st air path 9 along the radiation fin 316. FIG. For this reason, in the power supply device A, the electrical components 31 and 32 to be cooled can be cooled more efficiently.

  Furthermore, in this embodiment, since the electronic component 30 is installed in the base 50 of the heat sink 5, the heat of the electronic component 30 is quickly transmitted to the plurality of fins 51 in addition to being transmitted to the air. The plurality of fins 51 are formed so as to have a large surface area in contact with air, and heat from the electronic component 30 is efficiently radiated into the air in the air passage 9 ′ by the plurality of fins 51.

When the first and second fans 8 and 8 ′ are operated, the air around the suction ports 80 and 80 ′ is taken into the first and second fans 8 and 8 ′, and the air flows into the first and second winds. The air is sent out from the discharge ports 81 , 81 ′ into the air passages 9, 9 ′ in a direction intersecting the longitudinal direction of the passages 9, 9 ′. Accordingly, outside air flows from the intake hole 20 into the arrangement space B2.

  At this time, the suction hole portion 20 at a position away from the suction ports 80 and 80 ′ serves as air inflow resistance, and a sufficient pressure difference is generated between the suction ports 80 and 80 ′ and the suction hole portion 20. . Thereby, the arrangement space B2 has a negative pressure. While the air containing the dust sucked into the arrangement space B2 from the suction hole portion 20 flows while decelerating and staying in the suction ports 80 and 80 ′ of the fans 8 and 8 ′, the dust is sufficiently removed. And the 2nd fans 8 and 8 'can take in air with less quantity of dust. Therefore, it is possible to effectively prevent dust from entering into the first and second air passages 9 and 9 ′ together with the wind from these fans 8 and 8 ′.

  Furthermore, in this embodiment, it is possible to move the electrical components 31 and 32 along the long hole 33 a provided in the connection fitting 33. For this reason, it is possible to finely adjust the protruding amounts of the resin covers 315 and 324 facing the first air passage 9 in order to balance the weight even after the connection fitting 33 is fixed to the second partition plate 7A. It has become. Therefore, the power supply device A can maintain a more preferable weight balance.

  Since the first and second air passages 9 and 9 'are divided into the upper and lower stages, the air heated by the heat generated by the lower electrical components 31 and 32 does not move upward, and the upper stage electrons The component 30 and the lower electrical components 31 and 32 are efficiently air-cooled without being affected by mutual heat generation.

  For example, when the temperature of the lower electrical components 31 and 32 is likely to be higher due to heat generation than the upper heat sink 5, the lower first fan 8 has a relatively strong blowing power or a large-sized one. Can be adopted. That is, the first and second fans 8 and 8 'can have different cooling capacities. Furthermore, for example, when the operations of the electronic component 30 and the electrical components 31 and 32 are greatly different in time, the timings at which the first and second fans 8 and 8 ′ are operated can be made different accordingly. .

  In the power supply device A of the present embodiment, the first and second fans 8 and 8 ′ are in the middle part of the first and second air paths 9 and 9 ′. For this reason, regions relatively close to the first and second fans 8 and 8 ′ are generated both in the front and rear direction in the F direction. Therefore, the electronic component 30 and the electrical components 31 and 32 can be freely arranged to some extent in the F direction along the first and second air paths 9 and 9 '.

  During operation of the power supply device A, since a certain amount of dust enters the first and second air passages 9 and 9 'together with air, the first and second winds after being used for a relatively long time. In the paths 9 and 9 ′, dust tends to be accumulated in the gaps between the fins 51 of the heat sink 5. If the power supply device A is used in such a state, the heat radiation effect of the heat sink 5 and the heat radiation fin 316 may be weakened. As a result, the electronic component 30 and the electrical components 31 and 32 may be thermally damaged without being sufficiently cooled. Therefore, during operation, a dust removal operation is performed in which dust in the first and second air passages 9 and 9 'is periodically blown out using an air blow gun (not shown).

  In the dust removal work using the air blow gun, the casing cover 2 is removed so that the outlets 90 and 90 ′ of the first and second air passages 9 and 9 ′ are exposed. Compressed air is injected into the air passages 9 and 9 ′ from one side in the longitudinal direction by an air blow gun. At that time, the jet direction of the compressed air is a direction intersecting at a substantially right angle with the blowing direction of the first and second fans 8 and 8 ′, and the compressed air is the first and second fans 8 and 8 ′. It is hard to let wind pressure act on. As a result, even during the dust removal operation using the air blow gun, the fans 8 and 8 'do not reversely rotate at high speed and are not damaged, and the dust removal operation can be easily performed.

  The arrangement space B1 in which the terminal portions 31B and 32B of the electronic component 30 and the electrical components 31 and 32 are located is divided into the first and second air passages 9 and 9 ′ and the first by the first and second partition plates 6 and 7A. And it is completely partitioned from the arrangement space B2 of the second fans 8, 8 ′. Furthermore, the electrical components 31 and 32 are fitted in the openings 71 and 72 formed in the second partition plate 7A, so that it is difficult for air to flow through the openings 71 and 72 into the arrangement space B1. Further, the opening 73 formed in the second partition plate 7 </ b> A is sealed by the base 50 of the heat sink 5. For this reason, there is no room for the wind from the fans 8 and 8 'and the outside air to actively enter the arrangement space B1. Accordingly, the arrangement space B1 does not accumulate dust so as to require dust removal work, and there is no possibility of causing malfunction of the electronic component 30 and the electric components 31 and 32 due to dust.

  In addition, this invention is not limited to said embodiment.

  The configuration shown in each of the above embodiments is merely an example, and all changes in each part within the scope of the matters described in each claim are included in the scope of the present invention.

  For example, as shown in FIG. 11, a flange portion 315 c may be provided on the resin cover 315 of the electrical component 31. The flange portion 315c is formed so as to spread outside the opening 71 in the thickness direction view of the second partition plate 7A. If the electrical component 31 is installed so that the flange portion 315c contacts the second partition plate 7A, the opening 71 can be sealed better. In this way, it becomes more difficult for air to flow from the first air passage 9 to the arrangement space B1 through the opening 71, and dust can be prevented from entering the arrangement space B1. Note that the resin cover 324 of the electrical component 32 can have the same structure. In these cases as well, it is possible to adjust the positions of the electrical components 31 and 32 by moving the resin covers 315 and 324 along the long holes 33a.

  Further, for example, in the above embodiment, the electrical component 32 has a structure in which the core portion 321 and the winding portion 322 are exposed from the resin cover 324, but the core portion 321 and the winding portion 322 are covered with the resin cover 324. It may be a different structure. Further, in that case, a heat radiating fin similar to the heat radiating fin 316 may be provided on the resin cover 324.

  Further, for example, in the electrical component 31 in the above embodiment, the core portion 311 and the primary and secondary winding portions 312 and 313 are covered with the resin cover 315, but the core portion 311 and the primary and secondary winding portions 312 are covered. , 313 may be exposed from the resin cover 315.

  Moreover, in the said embodiment, although the electrical components 31 and 32 are fitted by the opening 71 and 72 formed in 2nd partition plate 7A facing the 1st fan 8, according to the structure of an apparatus. An opening may be provided in the partition plate that does not face the fan, and electrical components may be fitted.

  For example, in the said embodiment, although the heat sink 5 and the electrical components 31 and 32 are installed in the separate air paths 9, 9 ', you may install them in the same air path. In that case, one air passage and one fan may be provided.

  Moreover, you may arrange | position so that a part of electronic component 30 may face the air path 9 'directly.

A power supply device 1 base member 2 housing cover 2A, 2B side surface portion 2C front surface portion 2D rear surface portion 20 intake hole portion 21 ventilation hole portion 30 electronic component 31, 32 electric component 31A, 32A main body portion 31B, 32B terminal portion 311, 321 Core portion 312 Primary winding portion 313 Secondary winding portion 314 Support member 314A Bottom portion 314B Lid portion 315, 324 Resin cover 315a One end portion 315b Other end portion 315c Flange portion 316 Heat radiation fin 322 Winding portion 323 Fixing member 33 Connecting metal fitting 33A , 33B plate piece 33a long hole 33b screw hole 331, 332 screw 333 nut 5 heat sink 50 base 51 fin 6 first partition plate 7A, 7B second partition plate 7C third partition plate 70, 71, 72, 73 opening 8 fans (first fan)
8 ′ Second fan 80, 80 ′ Suction port 81, 81 ′ Discharge port 9 Air passage (first air passage)
9 'second airway 90, 90' (windway) exit

Claims (3)

A longitudinally extending air passage,
A partition plate defining the air path;
A fan that sends wind into the air path,
A plurality of parts arranged along the air path;
With
A power supply device configured such that the component is cooled by wind passing through the air path,
The partition plate has an opening facing the air path,
The plurality of parts include electrical parts that fit into the openings,
A part of the electrical component is exposed to the air path ,
The electrical component is a reactor or a transformer, and their main body is located in the air path,
The main body includes a core, a winding wound around the core, and a resin cover that seals the opening and covers the core and the winding.
The resin cover is integrally formed with a plurality of radiating fins, and
The plurality of heat radiation fins, the end face of the resin cover extends in the longitudinal direction of the air path, and characterized by Rukoto lined in the lateral direction of the air path, the power supply device. 2. The power supply device according to claim 1, wherein the fan is disposed at an intermediate portion in a longitudinal direction of the air passage, and both longitudinal end portions of the air passage are outlets of the wind. The power supply device according to claim 2 , wherein the fan is arranged so as to eject wind in a direction orthogonal to a longitudinal direction of the air passage.

Images