JP2011188671A - Power supply apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power supply apparatus for efficiently cooling various components without damaging an arrangement degree of freedom of a plurality of components and easily removing dust without the possibility of damaging a fan. <P>SOLUTION: The power supply apparatus (A) includes an air duct 9 extending in a longitudinal direction, a fan 8 for sending wind into the air duct 9, and the plurality of components 3 arranged along the air duct 9 and cools the components 3 by wind passing through the air duct 9. The fan 8 is arranged to send the wind in a direction crossing the longitudinal direction of the air duct 9. The fan 8 is disposed in an intermediate part in the longitudinal direction of the air duct 9. Both ends in the longitudinal direction of the air duct 9 are outlets 90 of the wind. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

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

  Conventional power supply devices for welding include a plurality of electronic components, a longitudinally extending air passage, and a fan that sends air into the air passage (see, for example, Patent Document 1). In the power supply device disclosed in this document, a plurality of electronic 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 the electronic components. In particular, electronic components that tend 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 wind flows over a relatively long distance from one end to the other end in the longitudinal direction of the air passage, so that the electronic component located far from the fan is cooler than the one near the fan. This makes it difficult to efficiently cool a plurality of electronic components arranged on the side wall of the air passage.

  In addition, a plurality of electronic components to be cooled are arranged near the fan so that they are more likely to generate heat, and the position in the longitudinal direction of the air path is restricted. Therefore, there is a problem that the degree of freedom of component arrangement is not so high. .

  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 various components can be efficiently cooled without impairing the degree of freedom of arrangement of a plurality of components, and the fan may be damaged. It is an object of the present invention to provide a power supply device that can easily perform dust removal work.

  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 fan for sending air to the air passage, and a plurality of components arranged along the air passage, and passes through the air passage. A power supply device configured to cool the components by wind, wherein the fan is arranged to send wind in a direction intersecting with a longitudinal direction of the air path. .

  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 a preferred embodiment of the present invention, a heat sink is disposed on a wall facing the fan in the air passage, and at least some of the plurality of parts are disposed along the back surface of the heat sink. Yes.

  In a preferred embodiment of the present invention, the heat sink has a plurality of fins extending in the longitudinal direction of the air passage and arranged in the short direction of the air passage.

  In a preferred embodiment of the present invention, the air passage extends linearly in the horizontal direction and is surrounded by a pair of vertical walls facing in the width direction, and an upper wall and a bottom wall facing in the up-down direction. The at least part of the plurality of parts is disposed along one of the pair of vertical walls, and the fan is disposed on the other inner surface of the pair of vertical walls. It is arranged so that the wind blows from.

  In a preferred embodiment of the present invention, at least a part of the plurality of parts is disposed on the outside along one of the pair of vertical walls.

  In a preferred embodiment of the present invention, the component arranged on the outside along one of the pair of vertical walls is an electronic component.

  In a preferred embodiment of the present invention, at least a part of the plurality of components is along at least one of the pair of vertical walls or along at least one of the top wall and the bottom wall. These are arranged so as to penetrate the wall.

  In a preferred embodiment of the present invention, the wall passes through at least one of the pair of vertical walls or along at least one of the top wall and the bottom wall. The arranged components are a reactor or a transformer, and their coil portions are located in the air path.

  In the above configuration, since the fan blowing direction intersects the longitudinal direction of the air passage, the fan air is, for example, divided into two hands and air-cooled on each part while blowing out from both longitudinal ends of the air passage. To do. That is, the distance that the wind flows from the fan to both ends in the longitudinal direction of the air path is shorter than the entire length of the air path. As a result, the wind from the fan quickly removes the heat of each component and is released to the outside, and efficiently cools these components with air. Since the plurality of components arranged along the air path are located closer to the fan, the plurality of components are efficiently cooled by the wind from the fan. Thereby, it is not necessary to determine the position of the component according to the heat generation characteristic of the component, and each component can be arranged freely to some extent. Further, since the wind of the fan is discharged from both ends in the longitudinal direction of the air passage, the resistance of the air flowing through the air passage can be reduced, which also contributes to efficient cooling of the parts. In the dust removal operation, for example, compressed air can be injected into the air passage from the outlet at one end in the longitudinal direction of the air passage by an air blow gun. At that time, the jet direction of the compressed air is a direction crossing the blowing direction of the fan. That is, since the compressed air from the air blow gun is less likely to directly hit the fan, the fan is not reversed at high speed even by a strong jet of compressed air. Therefore, according to the present invention, various components can be efficiently cooled without impairing the degree of freedom of arrangement of a plurality of components, and further, dust removal using an air blow gun can be performed without concern that the fan will be damaged. It can be done easily.

  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 disassembled perspective view which shows one Embodiment of the power supply device which concerns on this invention. It is the disassembled perspective view which showed the power supply device of FIG. 1 from another angle. It is sectional drawing which follows the III-III line of FIG. It is a side view which shows other embodiment of the power supply device which concerns on this invention. It is a front view of the V arrow direction 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 sectional drawing which follows the IIX-IIX line | wire of 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 a disassembled perspective view which shows other embodiment of the power supply device which concerns on this invention.

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

  1 to 3 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, various components 3 constituting a power supply circuit, a heat sink 5, a first partition plate 6, two second partition plates 7A and 7B, and a cooling fan. 8 is provided. A hollow air passage 9 surrounded by a part of the base member 1, a part of the first partition plate 6, and the second partition plates 7A and 7B is provided in the apparatus. The air passage 9 extends in the longitudinal direction in the front-rear direction of the power supply device A (hereinafter referred to as “F direction”). Inside the apparatus, the outside of the air passage 9 is surrounded by a part of the base member 1, a part of the housing cover 2, a part of the first partition plate 6, and the second partition plates 7A and 7B. An arrangement space B1 for the component 3 and an arrangement space B2 for the fan 8 are provided.

  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. At the center of the upper surface of the base member 1, second partition plates 7A and 7B are arranged so as to face each other with a predetermined interval.

  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, an intake hole portion 20 for guiding outside air to the arrangement space B2 of the fan 8 is provided in a region near both ends in the F direction. The intake hole 20 is composed of a large number of relatively small slit holes. Ventilation holes 21 for guiding the wind from the air passage 9 to the outside are provided in regions corresponding to the air passage 9 in the front portion 2C and the back portion 2D. The ventilation hole portion 21 is composed of a relatively large number of holes for good ventilation.

  The component 3 is likely to generate heat during operation, and is, for example, an electronic component such as a switching element, a diode, or a capacitor that constitutes a power supply circuit, or an electrical component such as a transformer or a reactor. These components 3 are directly attached to the heat sink 5 through the second partition plate 7A. Thereby, heat from each component 3 is quickly transmitted to the heat sink 5.

  The heat sink 5 is a heat radiating member made of, for example, aluminum, and includes a base 50 fixed to the second partition plate 7A, and a plurality of fins 51 extending from the base 50 and extending in the F direction and arranged in the vertical direction. The component 3 is directly attached to a part of the base 50 facing the second partition plate 7A via a screw (not shown) or the like. 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. The heat sink 5 has the same size as the second partition plate 7 </ b> A and has a longitudinal dimension that extends to the entire length of the air passage 9. In the present embodiment, the heat sink 5 is also a cooling target. The size of the heat sink may be smaller than that of the second partition plate 7A.

  The 1st partition plate 6 is metal, for example, and divides the space in an apparatus into the space of an upper stage and a lower stage. The first partition plate 6 has a rectangular shape that is approximately the same size as the base member 1, and is disposed horizontally at the intermediate position in the vertical direction of the housing cover 2. The first partition plate 6 forms an upper wall of a lower space such as the arrangement space B1 of the component 3, the arrangement space B2 of the fan 8, and the air passage 9. Although not particularly shown, parts and the like are also provided in the upper space.

  The second partition plates 7A and 7B are made of, for example, metal, and divide the lower space in the apparatus into spaces such as an arrangement space B1 for the component 3, an arrangement space B2 for the fan 8, and an air passage 9. The second partition plates 7 </ b> A and 7 </ b> B have the same size in the F direction as the base member 1, and are disposed perpendicular to the base member 1 and the first partition plate 6. The second partition plates 7 </ b> A and 7 </ b> B form vertical walls of a space such as the arrangement space B <b> 1 of the component 3, the arrangement space B <b> 2 of the fan 8, and the air passage 9. The second partition plate 7A is provided with a square window 70 for exposing a part of the base 50 of the heat sink 5 to the arrangement space B1 and allowing the component 3 to be attached thereto. The square window 70 is closed by the base 50. An opening 71 for allowing the fan 8 to face the air passage 9 is provided in an intermediate portion in the F direction of the second partition plate 7B (see FIG. 3).

  The fan 8 is, for example, an axial flow type in which a plurality of blades and an electric motor are integrated, and has an air suction port 80 and a discharge port 81 on both ends in the axial direction of the motor. The fan 8 is arranged such that the discharge port 81 coincides with the opening 71 of the second partition plate 7B. That is, the fan 8 is disposed in the middle portion in the longitudinal direction of the air passage 9 and is positioned so that the discharge port 81 faces the inside of the air passage 9. Thus, the blowing direction of the fan 8 is a direction that intersects the longitudinal direction of the 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. Thus, the side surface portion 2 </ b> A becomes a fan facing wall that faces the suction port 80. 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.

  The air passage 9 cools the heat sink 5 with air from the fan 8 and guides the air to both ends in the longitudinal direction. The air passage 9 has the second partition plates 7A and 7B as a pair of vertical walls facing each other in the width direction, and further a part of the first partition plate 6 and a part of the base member 1 facing each other in the vertical direction. It is enclosed as a wall and a bottom wall and has a rectangular cross section. Both ends in the longitudinal direction of the air passage 9 become outlets 90 from which the wind blows. The wind sent from the fan 8 into the air passage 9 hits the fin 51 and splits into two ends in the longitudinal direction of the air passage 9 and blows out from the outlet 90 while taking a lot of heat from the fin 51. That is, the distance that the wind flows from the fan 8 to the outlet 90 in the air passage 9 is about half of the entire length of the air passage 9, and the air is quickly discharged to the outside. Thereby, the component 3 is efficiently cooled via the heat sink 5. 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.

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

  During operation, the power supply device A generates a large current and a high voltage for welding, so that the plurality of components 3 generate heat and their temperature increases. The heat of each component 3 is directly transmitted to the heat sink 5 as well as being transferred to the air in the arrangement space B1. At this time, since the metal that is the material of the heat sink 5 has a higher thermal conductivity than air, the heat generated in each component 3 is efficiently transmitted to the heat sink 5.

  The heat sink 5 has a large surface area that comes into contact with air by the plurality of fins 51. Therefore, the heat of the heat sink 5 is efficiently radiated into the air in the air passage 9 by the plurality of fins 51.

  When the fan 8 is operated, air around the suction port 80 is taken into the fan 8 and the air is sent out from the discharge port 81 into the air passage 9 in the direction intersecting the longitudinal direction of the air passage 9 as wind. Accordingly, outside air flows from the intake hole 20 into the arrangement space B2.

  At this time, as shown in FIG. 3, the suction hole portion 20 at a position away from the suction port 80 becomes an inflow resistance of the air, and a sufficient pressure difference exists between the vicinity of the suction port 80 and the vicinity of the suction hole portion 20. Arise. Thereby, the arrangement space B2 has a negative pressure. The air containing the dust sucked into the arrangement space B2 from the suction hole portion 20 is sufficiently removed while flowing to the suction port 80 while decelerating and staying, and the fan 8 uses the air with a smaller amount of dust. Can be captured. Therefore, dust entering the air path 9 together with the wind from the fan 8 is effectively suppressed.

  The wind sent from the fan 8 into the air passage 9 directly hits the heat sink 5 and flows along the fins 51 to both ends in the longitudinal direction of the air passage 9. At that time, since the wind efficiently hits a large number of fins 51, a lot of heat is taken from the surface of each fin 51. The wind from the fan 8 is split into two ends in the longitudinal direction of the air passage 9, flows through a relatively short distance, and is discharged to the outside from the outlets 90 on both sides. Therefore, the resistance of the wind flowing through the air passage 9 is reduced, and the wind is quickly discharged from the outlet 90. Thereby, the heat sink 5 is efficiently air-cooled, and the component 3 is also efficiently cooled via the heat sink 5.

  The plurality of parts 3 arranged along the air passage 9 are preferably located around the fan 8 because the fan 8 is located in the middle in the longitudinal direction of the air passage 9. That is, the distance between the fan 8 and each component 3 in the longitudinal direction of the air passage 9 is shorter than the entire length of the air passage 9, and each component 3 is disposed at a relatively close position to the fan 8. . The plurality of components 3 are efficiently cooled also by such a positional relationship between the fan 8 and the components 3. Therefore, it is not necessary to determine the position of each component 3 according to the heat generation characteristics of the component 3, and a plurality of components 3 can be freely arranged to some extent.

  In addition, in the power supply device A, since the resistance of the wind flowing through the air passage 9 is reduced, the fan 8 can be reduced in size and weight, and the fan 8 can be easily reduced in noise and power consumption. .

  During operation of the power supply device A, a certain amount of dust enters the air passage 9 together with air, so that the dust enters the gaps of the fins 51 of the heat sink 5 in the air passage 9 after being used for a relatively long time. Tends to be accumulated in If the power supply device A is used in such a state, the heat dissipation effect of the heat sink 5 is weakened, and as a result, the component 3 is not sufficiently cooled, and the component 3 may be thermally damaged. Therefore, in operation, a dust removing operation is performed in which dust in the air passage 9 is periodically blown out using an air blow gun (not shown).

  In the dust removal work using the air blow gun, the housing cover 2 is removed from the base member 1 so that the outlet 90 of the air passage 9 is exposed. Compressed air is injected with the outlet facing inward. The compressed air becomes a jet along the longitudinal direction of the air passage 9, and for example, dust accumulated between the fins 51 is blown away toward the other outlet 90.

  Moreover, the injection direction of the compressed air injected from the air blow gun is a direction along the longitudinal direction of the air passage 9, that is, a direction intersecting the blowing direction of the fan 8. Thereby, the compressed air from the air blow gun becomes a jet that makes it difficult to directly apply the wind pressure to the blades of the fan 8. Therefore, at the time of dust removal work using an air blow gun, the fan 8 is not reversed at high speed by a strong jet of compressed air, and there is no possibility of damaging the blades of the fan 8 and the rotary bearing.

  Furthermore, according to the power supply device A, dust entering the air path 9 together with the wind from the fan 8 can be suppressed. Therefore, it is possible to extend the period until the dust removal work is performed and to increase the operation efficiency.

  4 to 10 show other embodiments of the power supply device according to the present invention. The power supply device A1 shown in the figure has the same air path in the upper and lower stages as in the previous embodiment. In the following description, the same or similar components as those according to the above-described embodiment are denoted by the same or similar reference numerals, and the description thereof is omitted.

  The power supply device A1 includes a base member 1, a housing cover 2, an electronic component 30 and an electrical component 31 constituting a power supply circuit, a heat sink 5, a first partition plate 6, second partition plates 7A and 7B, and a third partition. A plate 7C and first and second fans 8, 8 '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. In the apparatus, on the outer side of the first and second air passages 9 and 9 ′, a part of the base member 1, a part of the side surface portion 2 </ b> A of the housing cover 2, and a part of the first partition plate 6. An arrangement space B2 for the fans 8, 8 ′ surrounded by a part of the second partition plate 7B and the third partition plate 7C is provided. The arrangement space B1 for the electronic component 30 or the like is continuous with the space above the first partition plate 6.

  As shown in FIG. 6, a second partition plate 7 </ b> A is disposed at the center of the upper surface of the base member 1 perpendicular to the upper surface. 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.

  As shown in FIG. 4, the side surface portion 2A of the housing cover 2 serves as a wall facing the first and second fans 8 and 8 '. In the side surface portion 2A, intake holes 20 are provided in regions near both ends in the F direction. The intake hole 20 is for guiding external air to the arrangement space B2 of the fans 8 and 8 ', and is composed of a large number of relatively small slit holes as in the above-described embodiment. As shown in FIGS. 5, 9, and 10, the vent hole 21 is provided in a region corresponding to the first and second air passages 9 and 9 ′ in the front portion 2 </ b> C and the back portion 2 </ b> D.

  As shown in FIG. 10, the electronic component 30 is a switching element, a diode, or a capacitor, and is directly attached to the base 50 of the heat sink 5 through the square window 70 of the second partition plate 7A, as in the above-described embodiment. ing. As shown in FIGS. 6 and 8, the electronic component 30 is disposed along the upper portion of the second partition plate 7A. As shown in FIG. 9, the electrical component 31 is a transformer or a reactor, and has a coil portion 31A and a terminal portion 31B. The coil portion 31 </ b> A has at least a tip portion located in the first air passage 9, and the terminal portion 31 </ b> B is arranged in the same arrangement space B <b> 1 as the electronic component 30. That is, the electrical component 31 is disposed so as to penetrate the lower part of the second partition plate 7 </ b> A and face the placement space B <b> 1 and the first air passage 9. The electrical component 31 used in such a power supply device A1 is relatively large and heavy. Therefore, the electric component 31 is fixed by penetrating the second partition plate 7A by adjusting the protruding amount of the coil portion 31A facing the first air passage 9 in order to balance the weight when fixed. The coil portion 31A of the electrical component 31 may have a winding exposed or may be sealed with a mold resin.

  As shown in FIGS. 6 and 10, the heat sink 5 includes a base 50 fixed to the second partition plate 7A, and a plurality of fins 51 extending from the base 50 and extending in the F direction and aligned in the vertical direction. . The electronic component 30 is directly attached to one surface of the base 50 facing the second partition plate 7A via a screw (not shown) or the like. As shown in FIG. 10, the heat sink 5 is formed larger than the square window 70 of the second partition plate 7A, and is approximately equal to or shorter than the entire length of the air passage 9 'in the F direction. Also in this 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.

  As shown in FIG. 6, the first partition plate 6 divides the space such as the arrangement space B2 of the fans 8 and 8 ′ and the second air passage 9 ′ and the arrangement space B1 of the electronic component 30 vertically. . 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 partitions the first and second air passages 9, 9 'from the arrangement space B1. The second partition plate 7 </ b> A also has the same dimension in the F direction 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 '. A square window 70 is provided on the upper part of the second partition plate 7A so that a part of the base 50 of the heat sink 5 is exposed to the arrangement space B1, and the electronic component 30 can be attached to that part. The square window 70 is closed by the base 50. The lower part of the second partition plate 7A is provided with an opening through which the electrical component 31 can be fitted (reference numeral omitted).

  The second partition plate 7B partitions the second air path 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 71 '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. 10).

  The third partition plate 7 </ b> C has an L-shaped cross section surrounding the 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 71 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. 9).

  As shown in FIG. 6, the first fan 8 has an air suction port 80 and a discharge port 81. The first fan 8 is arranged such that the discharge port 81 coincides with the opening 71 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. 6, 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 71 '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 positioned to some extent with respect to the suction hole 20 positioned near both ends in the F direction of the side surface 2 </ b> A.

  As shown in FIG. 9, the first air passage 9 directly cools the electrical component 31 with 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 opposed in the width direction, and further a horizontal portion of the third partition plate 7C. A part of the base member 1 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 ends in the longitudinal direction of the air passage 9 become outlets 90 from which the wind blows. The wind sent from the first fan 8 into the first air passage 9 directly hits the coil portion 31A of the electrical component 31 and is split into two ends at both ends in the longitudinal direction of the first air passage 9. It blows out from the outlet 90 while taking a lot of heat from the portion 31A. 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 component 31 is 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. 10, the second air path 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 a pair of vertical walls opposed to each other in the width direction in the upper part of the second partition plate 7A and the second partition plate 7B, and a part of the first partition plate 6 and the third partition plate 7B. The horizontal portion of the partition plate 7C is surrounded as an upper wall and a bottom wall facing in the vertical direction, and is formed in a rectangular cross section. Both ends in the longitudinal direction of the second air passage 9 'serve as outlets 90' from 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 in which 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 ′, and the air is quickly introduced to the outside. To be discharged. Thereby, the electronic component 30 is efficiently cooled via the heat sink 5. The wind that blows out from the outlet 90 ′ is quickly blown out through the ventilation holes 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 A1 will be described.

  In the power supply device A1, during operation, the electronic component 30 and the electrical component 31 generate heat and their temperature increases. The heat of the electronic component 30 is directly transmitted to the heat sink 5 in addition to being transmitted to the air in the arrangement space B1. The heat transmitted to the heat sink 5 is efficiently radiated into the air of the second air passage 9 ′ by the plurality of fins 51. On the other hand, in the electrical component 31, the coil portion 31A is most likely to generate heat, and the heat of the coil portion 31A is transmitted to the air in the first air passage 9 '.

  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 is used as the wind for the first and second fans. Is sent out from the discharge port 81 into the air passages 9 and 9 ′ in a direction intersecting the longitudinal direction of the air passages 9 and 9 ′. Accordingly, outside air flows from the intake hole 20 into the arrangement space B2.

  At this time, similarly to the above-described embodiment, the intake hole portion 20 at a position away from the suction ports 80 and 80 ′ becomes the inflow resistance of the air, and the vicinity of the suction ports 80 and 80 ′ and the vicinity of the suction hole portion 20 A sufficient pressure difference occurs between them. 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, dust entering the first and second air passages 9 and 9 ′ together with the wind from these fans 8 and 8 ′ is effectively suppressed.

  The wind sent from the first fan 8 into the first air passage 9 is divided into two hands and strikes the electrical component 31 while flowing to both longitudinal ends of the air passage 9. At that time, since the wind directly hits the coil portion 31A of the electrical component 31, heat is efficiently removed from the coil portion 31A. The wind from the first fan 8 is split into two ends in the longitudinal direction of the first air passage 9, flows through a relatively short distance, and is discharged to the outside from the outlets 90 on both sides. Therefore, the resistance of the wind flowing through the first air passage 9 is reduced, and the wind is quickly discharged from the outlet 90. Thereby, the electrical component 31 is efficiently air-cooled.

  The wind sent from the second fan 8 ′ into the second air passage 9 ′ directly hits the heat sink 5 and flows along the fins 51 to both ends in the longitudinal direction of the air passage 9 ′. At that time, since the wind efficiently hits a large number of fins 51, a lot of heat is taken from the surface of each fin 51. The wind from the second fan 8 ′ is split into two ends in the longitudinal direction of the second air passage 9 ′, flows through a relatively short distance, and is discharged to the outside from the outlets 90 ′ on both sides. . Therefore, the resistance of the wind flowing through the second air passage 9 'is reduced, and the wind is quickly discharged from the outlet 90'. Thereby, the heat sink 5 is efficiently air-cooled, and the electronic component 30 is efficiently cooled via the heat sink 5.

  Since the first and second air passages 9 and 9 'are divided into an upper stage and a lower stage, the electronic component 30 located on the upper stage and the electric component 31 located on the lower stage are not affected by heat from each other. The first and second fans 8, 8 'are cooled by the wind. Thereby, the electronic component 30 and the electrical component 31 can also be efficiently air-cooled.

  For example, when the temperature of the lower electrical component 31 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 fan. can do. 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 component 31 are different in time, the timings at which the first and second fans 8 and 8 ′ are operated can be made different accordingly.

  Also in the power supply device A1 of the present embodiment, the distance between the first fan 8 and the electrical component 31 in the longitudinal direction of the first air passage 9 and the second fan 8 in the longitudinal direction of the second air passage 9 ′. The distance between 'and the electronic component 30 is shorter than the entire length of the air passages 9 and 9', and the electronic component 30 and the electric component 31 are disposed relatively close to the fans 8 and 8 '. Therefore, the electronic component 30 and the electrical component 31 can be freely arranged to some extent in the F direction along the first and second air paths 9 and 9 ′.

  The power source device A1 of the present embodiment also performs dust removal work using an air blow gun. At that time, for example, the compressed air is injected from one outlet 90 of the first air passage 9 toward the air outlet of the air blow gun. The compressed air becomes a jet along the longitudinal direction of the first air passage 9, and blows off dust adhering to the coil portion 31 </ b> A of the electrical component 31 toward the other outlet 90. The injection direction of the compressed air injected from the air blow gun is a direction along the longitudinal direction of the first air passage 9, that is, a direction crossing the blowing direction of the first fan 8. Thus, during the dust removal operation using the air blow gun, the first fan 8 is not reversed at a high speed by a strong jet of compressed air, and there is no possibility of damaging the blades or the rotary bearing of the fan 8. Similarly, the dust removal operation can be performed on the second air passage 9 'using an air blow gun, and there is no possibility of damaging the blades or the rotary bearing of the second fan 8'.

  Also with such a power supply device A1, dust entering the first and second air passages 9 and 9 ′ together with the wind from the first and second fans 8 and 8 ′ can be suppressed. The period can be extended and the operating efficiency can be increased.

  FIG. 11 shows another embodiment of the power supply device according to the present invention. The power supply device A2 shown in the figure is obtained by adding an electrical component 31 to the power supply device A shown in FIGS.

  In the power supply device A <b> 2 shown in FIG. 11, the electric component 31 passes through the partition plate 6 that is the upper wall of the air passage 9 and the coil portion 31 </ b> A is disposed in the air passage 9. The wind from the fan 8 flows to both ends in the longitudinal direction of the air passage 9 while hitting the coil portion 31A of the electrical component 31 and the fins 51 of the heat sink 5, and blows out from the outlet 90 to the outside. According to such a configuration, a plurality of components arranged along different walls of one air passage 9 can be efficiently air-cooled. In addition, the same effect can be obtained by arranging parts on the vertical wall on which the fan is arranged or on the bottom wall facing the top wall.

  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.

  You may arrange | position so that an electronic component may face the air path inside.

  A plurality of fans may be arranged in one air passage.

A, A1, A2 Power supply device 1 Base member 2 Housing cover 2A, 2B Side surface portion 2C Front surface portion 2D Rear surface portion 20 Air intake hole portion 21 Ventilation hole portion 3 Component 30 Electronic component 31 Electrical component 31A Coil portion 31B Terminal portion 5 Heat sink 50 Base 51 Fin 6 First partition plate 7A, 7B Second partition plate 7C Third partition plate 8 Fan (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 (9)

A longitudinally extending air passage,
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 power supply device according to claim 1, wherein the fan is arranged to send wind in a direction intersecting with a longitudinal direction of the air passage.   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 a heat sink is disposed on a wall facing the fan in the air passage, and at least a part of the plurality of parts is disposed along a back surface of the heat sink. .   The power supply device according to claim 3, wherein the heat sink has a plurality of fins extending in a longitudinal direction of the air passage and arranged in a short direction of the air passage. The air passage extends in a straight line in the horizontal direction and has a rectangular cross section surrounded by a pair of vertical walls facing in the width direction, and an upper wall and a bottom wall facing in the vertical direction. ,
At least a part of the plurality of parts is disposed along one of the pair of vertical walls,
The power supply device according to any one of claims 1 to 4, wherein the fan is arranged such that wind blows from the other inner surface of the pair of vertical walls.   6. The power supply device according to claim 5, wherein at least a part of the plurality of parts is disposed on an outer side along one of the pair of vertical walls.   The power supply device according to claim 6, wherein the component arranged on the outside along one of the pair of vertical walls is an electronic component.   At least some of the plurality of parts are arranged so as to penetrate the walls along at least one of the pair of vertical walls or along at least one of the top wall and the bottom wall. The power supply device according to claim 5.   A part arranged so as to penetrate the wall along at least one of the pair of vertical walls or along at least one of the upper wall and the bottom wall is a reactor or a transformer. The power supply device according to claim 8, wherein the coil portions are located in the air passage.

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