JP2008290010A - Electrical apparatus and welding apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To resolve problems in dust removing methods in a conventional electrical apparatus wherein a disassembling/assembling work requires removal of screws fixing the cover of a casing and fastening of the screws fixing the cover of the casing after finishing removal of dust, and needs to secure a work space, causing extremely poor dust removal efficiency. <P>SOLUTION: The electrical apparatus is provided with the casing, components provided in the casing, and a pipe with at least a part set inside the casing for running fluid thereinside and having holes injecting the fluid toward the components, to thus easily and efficiently remove dust attached to the components in the electrical apparatus. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an electric device having a structure for removing dust accumulated on an electrical component or the like in a housing or discharging the dust to the outside of the housing, and a welding device as an example thereof.

Conventionally, dust accumulated in a casing of an electric apparatus such as a welding apparatus has been removed by removing screws or the like that fix the cover of the casing and blowing brushes or air or sucking it with a vacuum cleaner.
JP 2001-046987 A JP 2003-334500 A

  However, conventional dust removal methods require disassembly and assembly work such as removing the screws etc. that fix the cover of the housing, and attaching the screws etc. that fix the cover of the housing after the dust removal is completed. The dust removal efficiency was very poor because it was necessary and the work space had to be secured. And from such inefficiency, the dust removal in a housing | casing was not often implemented.

  In addition, what is performing dust cleaning with compressed air and a vacuum duct is known as conventional dust removal (for example, refer patent document 1). However, there is a problem that dust cleaning is not performed on a portion that is blocked or shielded by parts because dust is blown out and sucked in one place.

  In addition, as another conventional dust removal, there is also one that performs dust cleaning by generating a turbulent flow of air by the discharge of the injected air in a random direction by the rotational movement of the L-shaped tube through the rotary joint and the vibration of the tube It is known (for example, see Patent Document 2). However, when air turbulence is generated in the housing, there is a problem that dust is scattered and enters the corner and cannot be removed.

  The present invention makes it possible to remove dust inside the housing or to easily discharge it outside the housing without removing the cover of the housing, causing failure of the electrical component due to dust accumulated in the housing, short circuit to the electrical component. An object of the present invention is to provide an electric device that prevents smoke, fire, and the like caused by fire.

  In order to solve the above-described problems, an electrical device according to the present invention includes a housing, a component provided in the housing, and at least a part of the electrical device in the housing that allows fluid to pass through the housing. On the other hand, a tube having a hole for ejecting the fluid is provided.

  Moreover, the electric device of the present invention is the above-described electric device in which a movable nozzle capable of changing the blowing direction of the fluid blown out from the hole is provided on the tube.

  Further, the electrical device of the present invention includes a plurality of pipes having holes in the above electrical device that are at least partially in the housing and allow fluid to pass through the interior, and eject the fluid to the components in the housing. It is a thing.

  Moreover, the electrical device of the present invention is the above electrical device, wherein the inlet for injecting fluid into the tube is made of a taper-shaped resin member.

  The electrical device of the present invention is the above-described electrical device, wherein at least a part of the electrical device is in the casing and allows a fluid to pass inside, and includes a suction pipe having a hole for sucking the fluid blown out from the pipe. is there.

  Moreover, the electric device of the present invention includes an opening / closing means provided at the inlet of the pipe for injecting the fluid and the spout of the pipe for sucking the fluid in the above electric device.

  The electric device of the present invention is the electric device described above, further comprising a fan for discharging the fluid blown out from the pipe to the outside of the casing.

  The electric device according to the present invention is the electric device described above, wherein a fan is provided on the surface of the housing located in the direction of blowing out the fluid blown out from the pipe.

  Moreover, the electric device of the present invention is the above electric device, wherein the pipe and / or the suction pipe are made of a flame-retardant material or a non-flammable material.

  Moreover, the electric device of the present invention is the above-described electric device in which the fluid is an incombustible gas.

  Moreover, the electrical device of the present invention is such that the fluid is air in the electrical device described above.

  Moreover, the welding apparatus of this invention is a welding apparatus which has the same structure as said electric apparatus, and uses the same gas as the shielding gas used for welding as a fluid.

  As described above, according to the electric device of the present invention, dust such as parts in the electric device can be easily and efficiently removed.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 8.

(Embodiment 1)
FIG. 1 shows an outline of the external appearance of an electric device, and is for explaining an example in which dust is removed by ejecting fluids 4a to 4n from a fluid injection tube 2a provided in a housing 1. FIG.

  In FIG. 1, components 5a, 5b, 5c, to 5n, which are power control devices such as IGBTs, diodes, transistors, SCRs, transformers, and the like are provided in the housing 1 of the electric device. Although not provided, a printed circuit board on which electronic components are mounted, a terminal block for relaying signals, a connector, and the like are provided. In the vicinity of these components 5a, 5b, 5c to 5n, a fluid injection pipe 2a having fluid ejection holes 3a to 3n is disposed. Then, a fluid (not shown) is injected from the fluid inlet 9 of the fluid injection pipe 2a. The end of the fluid injection pipe 2a is sealed (not shown). Accordingly, the injected fluid enters the fluid injection pipe 2a, and is ejected from the fluid ejection holes 3a to 3n. The ejected fluids 4a to 4n adhere to and accumulate on the components 5a, 5b, 5c, and 5n. Dust (not shown) can be removed.

  The fluid ejection holes 3a to 3n of the fluid injection pipe 2a are preferably provided at positions where the fluids 4a to 4n can be directly sprayed onto the components 5a, 5b, 5c, and 5n.

  The position of the fluid injection port 9 of the fluid injection pipe 2a may be arranged so as to be the same surface as one surface of the housing 1 or may be arranged so as to be outside the housing 1. good.

(Embodiment 2)
In the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. The difference from the first embodiment is that fluid ejection nozzles are provided in the fluid ejection holes 3a to 3n.

  FIG. 2 is a diagram showing a main part of a location where fluid ejection nozzles are provided in the fluid ejection holes 3a to 3n of the fluid injection pipe 2a. FIG. 2A to FIG. 2D show examples in which different ejection nozzles are provided.

  In FIG. 2A, the fluid ejection nozzle 6a is supported on the fluid injection pipe 2a by a fluid ejection nozzle support 7a. The direction of the fluid ejection nozzle 6a can be freely changed by the nozzle support 7a, and the direction can be determined in accordance with the size, orientation, and mounting position of the components 5a, 5b, 5c to 5n. The fluid injected from the fluid injection port 9 of the fluid injection pipe 2a is ejected as the ejection fluid 4a from the spout 8a which is the tip of the fluid ejection nozzle 6a having a cylindrical shape, and the dust adhered and deposited on the component 5a is removed. Remove.

  In FIG. 2B, the fluid ejection nozzle 6b is supported on the fluid injection pipe 2a by a fluid ejection nozzle support 7b. The direction of the fluid ejection nozzle 6b can be freely changed by the nozzle support 7b, and the direction can be determined in accordance with the size, orientation, and mounting position of the components 5a, 5b, 5c to 5n. The fluid injected from the fluid injection port 9 of the fluid injection pipe 2a is ejected as the ejection fluid 4a from the spout 8b which is the tip of the fluid ejection nozzle 6b having a rectangular shape, and the dust adhered and deposited on the component 5a is removed. Remove.

  In FIG. 2 (c), the fluid ejection nozzle 6c is supported by the fluid injection pipe 2a by a fluid ejection nozzle support 7c. The direction of the fluid ejection nozzle 6c can be freely changed by the nozzle support 7c, and the direction can be determined according to the size, orientation, and mounting position of the parts 5a, 5b, 5c to 5n. The fluid injected from the fluid injection port 9 of the fluid injection pipe 2a is ejected as a fluid 4a ejected from a spout 8c provided at a tip of a fluid ejection nozzle 6c having a tapered shape and having a plurality of circular fluid ejection holes. Then, the dust adhering to and accumulating on the component 5a is removed.

  In FIG. 2D, the fluid ejection nozzle 6d is supported on the fluid injection pipe 2a by a fluid ejection nozzle support 7c. The direction of the fluid ejection nozzle 6c can be freely changed by the nozzle support 7c, and the direction can be determined according to the size, orientation, and mounting position of the parts 5a, 5b, 5c to 5n. The fluid injected from the fluid injection port 9 of the fluid injection pipe 2a is ejected as a fluid 4a ejected from a spout 8c provided at the tip of a fluid ejection nozzle 6c having a tapered shape and having a circular fluid ejection hole. Then, the dust adhered and deposited on the component 5a is removed.

(Embodiment 3)
In the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. The difference from the first embodiment is that a plurality of fluid injection pipes 2b to 2n connected directly or indirectly to the fluid injection pipe 2a are provided in addition to the fluid injection pipe 2a.

  FIG. 3 is a diagram illustrating an example in which a plurality of fluid injection pipes having holes for ejecting fluid are provided. Then, the fluid injection pipe 2b, the fluid injection pipe 2c, and the fluid injection pipe 2n are connected to the fluid injection pipe 2a in accordance with the size, orientation, and mounting position of the components 5a, 5b, 5c, to 5n shown in FIG. Then, the fluid is injected from the fluid injection port 9, and the fluids 4a and 4n are ejected from the fluid injection pipes 2a, 2b, 2c, and 2n, and the dust adhered and deposited on the components 5a, 5b, 5c, and 5n Remove.

  In addition, although the example which provided the some fluid injection pipes 2b-2n directly or indirectly connected to the fluid injection pipe 2a was shown, it is so arranged that each is not connected but provided a plurality of independent fluid injection pipes 2a. It may be.

(Embodiment 4)
In the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. The difference from the first embodiment is that a fluid injection port 10 made of a resin member is connected to the fluid injection tube 2a, and fluid is injected from the fluid injection port 9.

  FIG. 4 is a diagram showing the main part of the portion of the inlet 9 for injecting fluid into the fluid inlet pipe 2a. A fluid inlet 10 having a tapered shape made of a resin member is connected to the fluid inlet pipe 2a. Inject fluid from 9. And it becomes easy to inject | pour a fluid from the fluid inlet 9 by setting it as such a taper shape.

(Embodiment 5)
In the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. The difference from the first embodiment is that a fluid suction pipe 21 including suction nozzles 15a to 15c is provided instead of the fluid injection pipe 2a.

  FIG. 5 is a view showing a main part of a place where the suction nozzles 15 a to 15 c are provided in the fluid suction pipe 21. 5 (a) to 5 (d) show examples in which different suction nozzles are provided.

  In FIG. 5A, the fluid suction nozzle 15a is supported by the fluid suction pipe 21 by a fluid suction nozzle support 14a. The direction of the fluid suction nozzle 15a can be freely changed by the support 14a of the nozzle, and the direction can be determined in accordance with the size, orientation, and mounting position of the components 5a, 5b, 5c to 5n. The dust adhering / depositing on the component 5a is sucked by the suction fluid 20 into the suction port 16a of the circular fluid suction nozzle which is the tip of the cylindrical fluid suction nozzle 15a, and the dust adhering / depositing on the component 5a is removed. Then, dust is discharged from the fluid outlet 17 of the fluid suction pipe 21.

  In FIG. 5B, the fluid suction nozzle 15b is supported by the fluid suction pipe 21 by a support 14b of the fluid suction nozzle. The direction of the fluid suction nozzle 15b can be freely changed by the support 14b of the nozzle, and the direction can be determined according to the size, orientation, and mounting position of the components 5a, 5b, 5c to 5n. Then, the dust adhering / depositing on the component 5a is sucked into the suction port 16b of the rectangular fluid suction nozzle which is the tip of the rectangular fluid suction nozzle 15b by the suction fluid 20, and the dust adhering / depositing on the component 5a is removed. Then, dust is discharged from the fluid outlet 17 of the fluid suction pipe 21.

  In FIG. 5C, the fluid suction nozzle 15c is supported by the fluid suction pipe 21 by a support 14c of the fluid suction nozzle. The direction of the fluid suction nozzle 15c can be freely changed by the support 14c of the nozzle, and the direction can be determined according to the size, orientation, and mounting position of the components 5a, 5b, 5c to 5n. Then, the dust adhering / depositing on the component 5a is sucked into the suction port 16c of the fluid suction nozzle provided at the tip of the tapered fluid suction nozzle 15c by the suction fluid 20 and having a plurality of circular suction holes, and is sucked into the component 5a. The attached and accumulated dust is removed, and the dust is discharged from the fluid outlet 17 of the fluid suction pipe 21.

  In FIG. 5D, the fluid suction nozzle 15c is supported by the fluid suction pipe 21 by a fluid suction nozzle support 14c. The direction of the fluid suction nozzle 15c can be freely changed by the support 14c of the nozzle, and the direction can be determined according to the size, orientation, and mounting position of the components 5a, 5b, 5c to 5n. Then, the dust adhering / depositing on the component 5a is sucked into the suction port 16d of the fluid suction nozzle provided at the tip of the tapered fluid suction nozzle 15c by the suction fluid 20 and having a circular single suction hole, and the component 5a. The dust adhering to and depositing on the fluid is removed, and the dust is discharged from the fluid outlet 17 of the fluid suction pipe 21.

  Note that the suction ports 16a to 16n of the fluid suction nozzle are preferably provided at positions where they can be directly sucked from the components 5a, 5b, 5c, and 5n.

  Further, the position of the fluid outlet 17 of the fluid suction pipe 21 may be arranged so as to be the same surface as one surface of the housing 1 or may be arranged so as to be outside the housing 1. good.

  Further, in the present embodiment, an example in which the fluid suction pipe 21 including the suction nozzles 15a to 15c is provided instead of the fluid injection pipe 2a is shown, but both the fluid injection pipe 2a and the fluid suction pipe 21 are provided. You may do it. And when providing both in this way, it is desirable to arrange | position so that the fluid ejection hole 3a of the fluid injection pipe 2a and the suction nozzle 15a of the fluid suction pipe 21 may face each other on the basis of the component 5a.

(Embodiment 6)
In the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. The difference from the first embodiment is that a lid 11 is provided that can open and close the fluid inlet 9 of the fluid inlet tube 2a.

  FIG. 6 is a diagram showing a portion of the fluid injection port 9 of the fluid injection tube 2a, and shows an example in which the lid 11 is attached to and removed from the fluid injection port 9. FIG.

  As described in the first embodiment with reference to FIG. 1, when the dust is removed by injecting the fluid 4a from the outside of the housing 1 through the fluid fluid inlet 9 of the fluid inlet pipe 2a to remove dust, but when cleaning is not performed There is a possibility that dust may enter from the fluid inlet 9. Therefore, the pipe lid 11 can be attached to the fluid inlet 9 and when the ejection fluid 4a is not injected, the pipe lid 11 is closed and the ejection fluid 4a is closed as shown in FIG. As shown in FIG. 6B, the tube lid 11 is opened. By doing in this way, it can prevent that dust mixes from the fluid inlet 9 when cleaning is not performed.

  The tube lid 11 is supported by an opening / closing support 12 of the lid 11 as shown in FIGS. 6 (a) and 6 (b).

  FIGS. 6C and 6D also show an open / closed state of the fluid inlet 9 by the lid 11, but show an example in which the open / close support 12 of the lid 11 is a string or the like.

  In addition, it is desirable that the lid 11 can be attached / detached also at the fluid outlet 17 of the fluid suction pipe 21, similarly to the fluid inlet 9.

  In at least one of the first to sixth embodiments, a fan 18 is provided in the housing 1 as shown in FIG. 7, and the parts 5a to 5n are attached to the parts 5a to 5n by the ejected fluid 4a blown out from the fluid injection pipe 2a. The accumulated dust may be discharged to the outside of the housing 1 as the exhaust fluid 19 by the fan 18.

  Further, in at least one of the first to sixth embodiments described above, as shown in FIG. 8, the dust adhered to and deposited on the component 5n by the ejected fluid 4a ejected from the fluid injection tube 2a is ejected and the fluid 4a is ejected. A fan 18 may be provided on the surface of the housing 1 positioned in the direction, and the exhaust fluid 19 may be discharged outside the housing 1.

  In at least one of the first to sixth embodiments, it is desirable that the fluid injection pipe 2a and / or the fluid suction pipe 21 be made of a flame-retardant material or a non-flammable material.

  In at least one of the first to sixth embodiments, it is desirable to use a nonflammable gas as the ejection fluid 4a.

  Moreover, a welding apparatus is mentioned as an example of the electric apparatus in at least any one of said Embodiment 1-6. And this welding apparatus includes power control devices such as IGBTs, diodes, transistors, SCRs, transformers, etc. as parts 5a, 5b, 5c, .about.5n, printed circuit boards on which electronic components are mounted, terminal blocks for relaying signals, connectors. Etc. are provided, and a welding shield gas is supplied for arc welding from a welding torch (not shown) to perform arc welding. In such a welding apparatus, the same gas as the shielding gas used for the welding may be used as the ejection fluid 4a to remove dust adhering to and accumulating on the parts 5a to 5n.

  The welding environment in which the welding apparatus is used often has dust or the like adhering to the workpiece, and dust or the like may be mixed inside the casing 1 of the welding apparatus. In such a welding apparatus, It is very useful to be able to remove dust easily and efficiently.

  According to the electric device of the present invention, dust such as components in the electric device can be easily and efficiently removed, and dust accumulated on the electric components or the like in the housing of the electric device can be removed. It is industrially useful as an electric device having a structure for discharging outside the body.

The figure which shows schematic structure of the electric apparatus in Embodiment 1 of this invention. (A) The figure which shows schematic structure of the fluid ejection part in Embodiment 2 of this invention (b) The figure which shows schematic structure of the fluid ejection part in Embodiment 2 of this invention (c) Embodiment 2 of this invention The figure which shows schematic structure of the fluid ejection part in (d) The figure which shows schematic structure of the fluid ejection part in Embodiment 2 of this invention The figure which shows an example of the fluid injection pipe in Embodiment 3 of this invention The figure which shows an example of the shape of the fluid inlet of the fluid injection pipe in Embodiment 4 of this invention (A) The figure which shows schematic structure of the fluid suction part in Embodiment 5 of this invention (b) The figure which shows schematic structure of the fluid suction part in Embodiment 5 of this invention (c) Embodiment 5 of this invention The figure which shows schematic structure of the fluid suction part in (d) The figure which shows schematic structure of the fluid suction part in Embodiment 5 of this invention (A) The figure which shows the closed state of the inlet of the pipe | tube in Embodiment 6 of this invention (b) The figure which shows the open state of the inlet of the pipe in Embodiment 6 of this invention (c) Implementation of this invention The figure which shows the closed state of the inlet of the pipe | tube in Embodiment 6 (d) The figure which shows the open state of the inlet of the pipe in Embodiment 6 of this invention 1 is a schematic configuration diagram of an electric device including a fan that discharges fluid according to an embodiment of the present invention. 1 is a schematic configuration diagram of an electric device including a fan that discharges fluid according to an embodiment of the present invention. FIG. 1 is a configuration diagram in which a fan is provided on the surface of a housing located in a fluid blowing direction according to Embodiments 1 to 8 of the present invention.

Explanation of symbols

1 Housing 2a, 2b, 2c, 2n Fluid injection pipe 3a, 3n Fluid ejection hole 4a, 4n Fluid 5a, 5b, 5c, 5n Parts 6a, 6b, 6c Fluid ejection nozzle 7a, 7b, 7c Support for fluid ejection nozzle Body 8a, 8b, 8c, 8d Fluid ejection nozzle spout 9 Fluid inlet of fluid supply pipe 10 Tapered fluid inlet
11 Tube Lid 12 Lid Open / Close Support 14a, 14b, 14c Fluid Suction Nozzle Support
15a, 15b, 15c Fluid suction nozzles 16a, 16b, 16c Fluid suction nozzle inlet 17 Fluid outlet pipe fluid outlet
18 Fan 19 Exhaust fluid 20 Suction fluid 21 Fluid suction pipe

Claims (12)

  An electric device comprising a housing, a component provided in the housing, and a tube having at least a part in the housing and allowing fluid to pass through the inside and having a hole for ejecting the fluid to the component .   The electric device according to claim 1, wherein the tube is provided with a movable nozzle capable of changing a blowing direction of the fluid blown from the hole.   The electric device according to claim 1 or 2, further comprising a plurality of pipes each having at least a part in the casing and allowing fluid to pass through the casing and having holes for ejecting the fluid to the components in the casing.   The electric device according to any one of claims 1 to 3, wherein an inlet for injecting a fluid into the tube is formed of a tapered resin member.   The electric device according to any one of claims 1 to 4, further comprising a suction pipe having a hole for sucking a fluid blown out from the pipe, wherein at least a part thereof is in the casing and allows fluid to pass through the casing.   The electric device according to any one of claims 1 to 5, wherein an opening / closing means is provided at an inlet of a pipe for injecting fluid and an outlet of the pipe for sucking fluid.   The electric device according to any one of claims 1 to 6, further comprising a fan for discharging the fluid blown out from the pipe to the outside of the housing.   The electric device according to any one of claims 1 to 7, wherein a fan is provided on a surface of the casing located in a direction in which the fluid blown out from the pipe is blown out.   9. The electric device according to claim 1, wherein the pipe and / or the suction pipe are made of a flame-retardant material or a non-flammable material.   The electric device according to claim 1, wherein the fluid is a nonflammable gas.   The electrical device according to any one of claims 1 to 9, wherein the fluid is air. It is a welding apparatus which has the same structure as the electric apparatus of any one of Claim 1 to 11, Comprising: The welding apparatus using the same gas as the shielding gas used for welding as a fluid.

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