JP2013039607A - Sucking device for exhaust - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sucking device for exhaust that effectively collects fine powder dust and odor and the like generating at working, while securing workability at detailed work.SOLUTION: A dust collection hood 21 is connected to an exhaust piping system 14 via a free arm 19 doubling as an exhaust duct. The dust collection hood 21 includes a transparent window 23 in the center of a hood body 22 whose lower surface is open, and a magnifying lens 24 is fitted into the transparent window 23. A light source 25 is located under the lower surface of the hood body 22 and around the magnifying lens 24.

Description

  The present invention relates to an exhaust suction device suitable for desk work and the like.

  As a conventional exhaust suction device, the upper surface of a dust generation source that performs welding work is covered with a dust collection hood, and this dust collection hood is connected to a dust collector via a suction duct pipe and a transport duct pipe. There is a gas dust collector that collects gas dust generated at times (see, for example, Patent Document 1).

  In such welding work, it is necessary to secure a sufficient height from the dust generation source to the suction duct tube from the viewpoint of fire prevention, so a sufficient working space can be secured under the dust collection hood. However, there is no problem in terms of workability, but if the dust collection hood is positioned so that the dust collection hood covers the operator's hand, the dust collection hood is It becomes a factor that hinders workability, and it is not easy to achieve both dust and odor collection efficiency and workability.

  For example, a conventional desktop work type dust collection hood includes a disc-type hood 1 shown in FIG. 4, a ball-type hood 2 shown in FIG. However, the main purpose of these dust collection hoods is to collect fine dust and odor generated by light work performed on a tabletop, and their shape emphasizes collection efficiency over workability. It is.

JP-A-10-272326

  However, when performing fine work, it is necessary to use a separately prepared magnifying lens, etc. If this magnifying lens is used, the magnifying lens may come into contact with the dust collecting hood, and workability may be significantly impaired. There is.

  On the other hand, if the dust collection hood is moved away from the work target part, contact between the magnifying lens and the dust collection hood can be avoided, so workability can be ensured, but dust and odor collection efficiency decreases, and these are May inhale by inhalation.

  The present invention has been made in view of such points, and provides an exhaust suction device capable of efficiently collecting fine dust or odor generated during work while ensuring workability when performing fine work. The purpose is to do.

  The invention described in claim 1 comprises a hood body having an opening on the bottom surface connected to the exhaust piping system, a see-through window provided in the hood body, and a magnifying lens fitted to the see-through window. This is an exhaust suction device.

  According to a second aspect of the present invention, in the exhaust suction device according to the first aspect, a light source disposed on the lower surface of the hood main body and around the magnifying lens is provided.

  According to a third aspect of the present invention, the hood body in the exhaust suction device according to the first or second aspect is for exhaust via a universal arm that also serves as an exhaust duct that can be freely deformed by a plurality of universal joints for piping. It is connected to the piping system.

  According to the first aspect of the present invention, the magnifying lens is fitted to the see-through window of the hood main body connected to the exhaust piping system, so that a fine working portion is enlarged by the magnifying lens and the fine work is performed. The hood main body having a lower surface opening shape that can be secured with the magnifying lens and close to the work target portion can efficiently collect fine dust and odor generated from the work target portion during work.

  According to the second aspect of the present invention, the workability when carrying out the fine work by illuminating the fine work part brightly while magnifying the fine work part by the light source disposed on the lower surface of the hood main body and around the magnifying lens. Can be further improved.

  According to the third aspect of the present invention, the hood body and the magnifying lens can be moved to any position and the angle can be adjusted by the universal arm that also serves as an exhaust duct that can be freely deformed by a plurality of universal joints for piping. It is possible to improve the workability and the collection efficiency of fine dust and odor.

1 is a perspective view showing an embodiment of an exhaust suction device according to the present invention. It is a perspective view from the upper side which shows the dust collection hood of a suction apparatus same as the above. It is a perspective view from the lower side which shows the dust collection hood of a suction apparatus same as the above. It is a perspective view which shows an example of the conventional dust collection hood. It is a perspective view which shows the other example of the conventional dust collection hood.

  Hereinafter, the present invention will be described in detail based on the embodiment shown in FIGS.

  FIG. 1 shows an exhaust suction device 11, and a plurality of branch pipes 16 are branched from a main pipe 15 of an exhaust pipe system 14 connected to an intake port such as a blower 12 via a filter 13. A dust collection hood 21 is connected to each of 16 through a universal arm 19 that also serves as an exhaust duct that can be freely deformed by a swivel joint 17 and a plurality of universal joints 18 and 18 for piping.

  As shown in FIGS. 2 and 3, the dust collection hood 21 has a bottom-opening hood main body 22 in which a peripheral side plate portion 22b is integrally formed from the periphery of the disc-shaped top plate portion 22a with steel or plastic. A see-through window 23 is provided at the center of the disc-shaped top plate portion 22a of the hood body 22, and a magnifying lens 24 such as a convex lens is fitted in the see-through window 23 in an airtight manner.

  Furthermore, the peripheral portion of the work visual field may be darkened by the hood main body 22, and in order to solve this fear, a light source 25 such as an LED light source is disposed on the lower surface of the hood main body 22 and around the magnifying lens 24. Has been.

  As shown in FIG. 1, each of the piping universal joints 18 and 18 of the universal arm 19 that also serves as an exhaust duct can rotate one elbow pipe portion 27 with respect to the straight pipe portion 26 via a seal member. The other elbow pipe part 28 is rotatably fitted to the one elbow pipe part 27 via a seal member, and the straight pipe part 26 is sealed to the other elbow pipe part 28. It is fitted through a member so as to be rotatable.

  The universal arm 19 can keep the dust collecting hood 21 in a fixed position by fitting between the pipe portions of the universal joints 18 and 18 so as to be rotatable while providing an appropriate frictional resistance. At the same time, the dust collection hood 21 can be moved to an arbitrary position and the angle of the dust collection hood 21 can be adjusted as necessary.

  As shown in FIGS. 2 and 3, the hood main body 22 of the dust collecting hood 21 is integrally provided with a connection port portion 29 connected to a universal arm 19 that also serves as an exhaust duct. The inside of the main body 22 communicates with the free arm 19.

  Next, the function and effect of this embodiment will be described.

  Dust, gas, smoke, odors, etc. generated at each desktop work section are sucked from the dust collection hood 21 by the suction force of the blower 12 etc. provided in the exhaust piping system 14 and passed through the flexible arm 19 that also serves as an exhaust duct. Then, clean air, which is collected in the main pipe 15 of the exhaust piping system 14 and from which dust and odors are removed by the filter 13, is discharged to the outdoors.

  At this time, the magnifying lens 24 is fitted to the hood main body 22 of the dust collection hood 21 connected to the exhaust piping system 14 via the free arm 19, so that the magnifying lens 24 enlarges a fine working portion. This ensures workability when performing fine work.

  In particular, the hood main body 22 and the magnifying lens 24 are integrated into the hood main body 22 so that the work field of view that is enlarged even when performing fine work due to the effect of the magnifying lens 24 enables smooth operation. The operation can be performed smoothly without being disturbed and without paying attention to these contacts when the hood main body 22 and the magnifying lens 24 are handled separately.

  At the same time, fine dust and odor generated from the work target portion at the time of work can be efficiently collected by the hood main body 22 having the lower surface opening that is close to the work target portion together with the magnifying lens 24. That is, because the hood body 22 is connected to the exhaust pipe system 14 via the universal arm 19 that also serves as an exhaust duct, the hood body 22 generates harmful fine dust by the connection port portion 29 provided in the hood body 22. Even during such operations, the risk of the operator inhaling these dusts can be reduced.

  In particular, the universal arm 19 that also serves as an exhaust duct is configured to be freely deformable by a plurality of universal joints 18 and 18, so that the hood body 22 and the magnifying lens 24 can be moved to any position and the angle can be adjusted. Therefore, it is possible to improve workability and improve the collection efficiency of fine dust and odor.

  In addition, the light source 25 located on the lower surface of the hood 22 and around the magnifying lens 24 illuminates a fine work area brightly while magnifying it to improve workability when performing fine work. Can do.

  Next, another embodiment not shown will be described.

  In the illustrated embodiment, the shape of the hood main body 22 is a disc shape. However, as another embodiment, the hood main body has a conical shape or a quadrangular pyramid in consideration of the contents of work and the nature of the generated dust. It may be formed into a shape.

  The magnifying lens 24 is not limited to a convex lens, and a thin and light Fresnel lens may be used as another embodiment of the magnifying lens.

  The light source 25 is also an LED light source in the illustrated embodiment, but a circular fluorescent lamp or a colored LED light source such as red or green may be used depending on the work contents.

  The connection port portion 29 of the hood main body 22 is also cylindrical in the illustrated embodiment, but may be a plate-shaped flat tube or a similar tube.

  The present invention can be used in the manufacturing industry of an exhaust suction device.

14 Exhaust piping system
18 Universal joint for piping
19 Swivel arm
22 Hood body
23 Perspective window
24 Magnifying lens
25 Light source

Claims (3)

A bottom-opening hood body connected to the exhaust piping system;
A perspective window provided on the hood body,
An exhaust suction device comprising: a magnifying lens fitted to the see-through window. The exhaust suction device according to claim 1, further comprising a light source disposed on a lower surface of the hood main body and around the magnifying lens. 3. The exhaust suction device according to claim 1, wherein the hood body is connected to the exhaust piping system via a universal arm that also serves as an exhaust duct that can be freely deformed by a plurality of piping universal joints. .

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