JPH0659465B2 - Cleaning method and equipment for buildings - Google Patents

Description

The present invention relates to a method of cleaning a building or the like and an apparatus thereof, and particularly to a cleaning method suitable for cleaning a building such as a nuclear power plant or a repair work, and a method thereof. Regarding the device.

[Prior art]

When constructing a nuclear power plant, it is necessary to clean large-capacity buildings such as the reactor building and turbine building before loading fuel.

Conventionally, it has been difficult to use a cleaning robot or the like because piping having a complicated shape is provided in the reactor building as is well known. Therefore, when cleaning such a large-capacity building, dust with a relatively large particle size accumulated on the floor surface should be removed with an electric cleaner, and dust adhering to the wall surface should be removed with a waste cloth or a chemical rag. ing.

[Problems to be solved by the invention]

However, since the conventional cleaning method is performed by human sea tactics using an electric cleaning machine, a waste cloth, a chemical rag, etc., a large number of cleaning works are required in a reactor building where piping is complicated in a large space building. It has the drawback of requiring personnel.

Also, among the dust particles in the air, those with a large particle size are deposited on the floor surface and can be removed relatively easily with an electric vacuum cleaner, but those with a small particle size, especially those with a diameter of 1 μm or less, are on the floor surface. It had a drawback that it was difficult to settle and could not be completely removed because it floats in the air.

The present invention has been made in view of such circumstances, and proposes a cleaning method of a building or the like and an apparatus thereof that can perform unattended cleaning without requiring many cleaning workers as in the past. Is intended.

[Means for solving problems]

The present invention, in order to achieve the above object, while blowing air on the walls, ceiling, floor, equipment, pipes and the like in the building to raise the attached dust, and cause a circulating flow of air in the building, It is characterized in that a filter is arranged in the flow path of the air circulation flow to remove dust, and a part of the air from which dust has been removed is used as blowing air for raising the dust.

[Action]

In the present invention, the dust adhering to the wall surface of the building is soared, and the air circulation flow path is formed in the building, and the soared dust is placed on the circulation flow path to circulate the dust and the circulation flow. Since the dust is removed by the filter arranged on the road, it is possible to easily clean a room having a large space such as a reactor building without an operator.

〔Example〕

Hereinafter, preferred embodiments of a method for cleaning a building and the like according to the present invention and a device therefor will be described in detail with reference to the accompanying drawings.

FIG. 1 shows the structure of the first embodiment according to the present invention. In FIG. 1, the small-sized purifier 10 is arranged on the floor surface in the building, and the small-sized purifier 10 has an axial fan 12 for supplying and exhausting air and a filter 14 inside. When the axial fan 12 operates, the air in the building is sucked in through the suction port 15 of the small-sized purifier 10 and the clean air is exhausted from the chamber 16. Hose 18 is filter 1
Part of the clean air that has passed through 4 is exhausted, and an air shower nozzle 20 is provided at the tip of the hose 18. The air shower nozzle 20 is suspended from the ceiling 21 by a wire 22 and is rotatably supported around the wire 22. The air shower nozzle 20 has a cylindrical body 2
A plurality of blow-out pipes 24 are radially provided on the outer periphery of the pipe 3.
have. The blow-out pipe 24 is provided so as to be slightly inclined with respect to the radial direction, and is formed in a spiral shape as a whole. Therefore, when the clean air is sent from the hose 18 to the air shower nozzle 20, the clean air is discharged to the outside through the pipe 24 of the air shower nozzle 20, and the discharge of the air causes the air shower nozzle 20 to move around the wire 22. Piping 30 and duct 31 that rotate and are placed inside the building
The dust that adheres to the top is made to fly up into the air.

The hose 18 has a hose 34 branched from the middle thereof, and a porous foot header 36 is provided at the tip of the hose 34. As shown in FIG. 2, the perforated foot header 36 is formed of a cylindrical body 38, and a large number of holes are formed on the outer peripheral surface thereof, and a flexible pipe 40 is provided in the holes. Therefore, when air is sent to the hose 34, air is blown from the pipe 40 of the header 36 and the pipe 4
0 swings, and by this swing, the dust adhered to the duct 32 and the like is blown up into the air while stroking the duct 32 and the like.

The air shower nozzle 20 and the perforated foot header 36 may be used in combination, or a plurality of types may be used according to the size of the building.

According to the first embodiment configured as described above, when the axial fan 12 operates, the air shower nozzle 20 and the porous foot header 36 operate, and the ceiling 21, the pipes 30, and the duct 32.
The air adhering to etc. is made to rise in the space inside the building.
As a result, dust with a small particle diameter, which has conventionally adhered to the wall surface, etc., can be reliably blown up into the air. At the same time, air is sucked in through the suction port 15 of the small-sized purifier 10. After the dust is removed by the filter 14, air is blown out from the chamber 16. As a result, an air circulation path is formed in the room, and the air passes through the filter 14, whereby the cleanliness of the air in the room is gradually improved. In the above embodiment, the air shower nozzle 2
0, the ejector cleaners 46, 46 may be used together via the hoses 42, 44 in addition to the multi-hole header 36.

According to this example, the air flow in the room where the tank and the like are installed was measured. A flow rate of 0.2 m / sec or more was observed in the range indicated by the arrow in FIG. The range of the air flow indicated by the arrow expands with the passage of time.

According to the above-described embodiment, since the inside of the building can be cleaned unattended without relying on the worker as in the conventional case, the cleaning work efficiency is significantly improved.

FIG. 4 shows the structure of the second embodiment according to the present invention. This second embodiment has a larger space and is suitable for cleaning the interior of a building. The first embodiment shown in FIG. 1 in the second embodiment
The same members as those in the embodiment or similar members are designated by the same reference numerals, and the description thereof will be omitted. In the second embodiment, an air curtain unit including an air blowing unit 50 and an air suction unit 52 is used instead of the small size cleaner of the first embodiment. The blow-out unit 50 has the air 54 from the blow-out surface 51.
Is blowing out. In addition, the suction unit 52
Has a suction port 56 on the surface of the blowing unit 50 facing the blowing surface 51 so as to suck the blown air 54. A filter is built in the suction unit 52, and dust in the air is removed by passing the filter. Further, a blower unit 58 is connected to the suction unit 52, and the blower unit 58 is connected to a lower portion of the suction unit 52 via a duct 60, sucks the air 54 from a suction surface 56 of the suction unit 52, and also pipes 61. A part of the clean air is returned to the blow-out unit 50 through the blower and blown out from the blow-out unit 50 again. Further, the blower unit 58 is connected to the air shower nozzle 20 via a hose 66, and is also connected to the porous foot headers 36, 36 via hoses 64, 68. As a result, part of the clean air is sent to the air shower nozzle 20 and the perforated foot header 36 to operate them.

According to the second embodiment of the present invention configured as described above, the blower unit 58 operates and the blowout unit 50 operates.
Air 54 is blown from the air 54, and the air 54 is sucked into the suction unit 52 having a built-in filter. This air flow 5
The surrounding air is sucked in by the flow of 4, and a large-scale circulating flow of air is gradually generated in the building.

On the other hand, the air shower nozzle 20, the perforated foot header 36, the ejector cleaner 46, etc. operate in the same manner as in the first embodiment, and the air adhering to the ceiling 21, the piping 30, the duct 32, etc. is blown up into the air. The air containing dust that has risen in the air forms a flow path of circulating air in the building, and when it enters this air flow, it passes through the suction unit 52. In this way, after a lapse of a certain period of time, dust is gradually removed by the filter mounted inside the suction unit 52, so that the interior of the building can be cleaned unattended.

Fig. 5 shows the result of measuring the air flow in the building where the tank etc. are installed. The air blown from two locations near the ceiling showed a wind speed of 0.2 m / sec or more within the range of the arrow.

In the second embodiment, the air flow blows out the unit 5
Since the circulation flow is formed by the air curtain unit including 0 and the suction unit 52, a larger air circulation flow path can be formed, and the invention can be applied to a building with a larger space.

Further, the small-sized cleaner 10 and the air curtain unit can be used together.

〔The invention's effect〕

As described above, according to the method for cleaning a building or the like and the apparatus for cleaning the building according to the present invention, dust adhering to the wall surface of the building is soared, and the soared dust forms an air circulation flow in the building. By doing so, dust is circulated by this circulation flow, and dust is removed by the filter placed in this circulation flow, so it is easy to clean a room with a large space such as a reactor building unattended. You can

[Brief description of drawings]

FIG. 1 is an explanatory view showing the structure of the first embodiment, FIG. 2 is a perspective view of a perforated foot header, FIG. 3 is an explanatory view showing the air flow of the first embodiment, and FIG. 4 is the present invention. FIG. 5 is an explanatory view showing the structure of the second embodiment, and FIG. 5 is an explanatory view showing the flow of the air flow of the second embodiment. 10: Small cleaning unit, 20: Air shower, 3
6 ... Porous foot header.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kikuo Fukuyama Inventor Kikuo Fukuyama 1-1-14 Uchikanda, Chiyoda-ku, Tokyo Hirtitsu Plant Construction Co., Ltd. (56) Reference JP-A-62-61687 (JP, A) Open 55-138699 (JP, A) Open 58-53288 (JP, U) Open 63-29031 (JP, U) Open 56-118777 (JP, U)

Claims (6)

[Claims] Claims: 1. Air is blown onto walls, ceilings, floors, etc. in a building to raise dust that has adhered thereto, and a circulating flow of air is generated in the building, and a filter is installed in the flow path of the circulating air. A method for cleaning a building or the like, characterized in that dust is removed, and part of the air from which dust has been removed is used as air for blowing air to raise the dust. 2. The method of cleaning a building or the like according to claim 1, wherein the circulating flow of air is formed by a small cleaner. 3. The method of cleaning a building according to claim 1, wherein the circulating flow of air is formed by an air curtain unit. 4. An air inlet, a filter for removing dust,
A cleaning device for a building or the like, which comprises a circulating air forming means having an air outlet, and a dust raising means operated by utilizing a part of the clean air blown out from the circulating air forming means. 5. The building cleaning device according to claim 4, wherein the circulating air forming means is a small cleaner or an air curtain unit. 6. The building cleaning device according to claim 4, wherein the dust raising means is an air shower or a porous foot header.