JPH0353038B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cleaning tool for cleaning ducts for air conditioning and the like.

[Prior Art] Air conditioning ducts have not been cleaned for many years because the ducts are arranged vertically and horizontally, and their cross-sectional area is narrow, making it impossible for people to go inside and clean them. It is often used without. Therefore, soot, dust, etc. are accumulated inside the duct, and this peels off and exits from the air outlet, thereby deteriorating the indoor living environment.

Conventionally, as cleaning tools for cleaning such ducts, Japanese Patent Application Laid-Open No. 59-49887 (Conventional Example 1), Japanese Patent Application Laid-Open No. 18157-1987 (Conventional Example 2), and Utility Model Application Laid-Open No. 57-131893 have been used. The one described in Japanese Patent No. 3 (Conventional Example 3) is known.

[Problems to be Solved by the Invention] However, in Conventional Examples 1 and 2, a rotary duster (tool) is inserted at the tip of the flexible rotary shaft inside the duct (pipe) and moved, so When the duster duct has a cross section other than a circle, such as a rectangular cross section, it is not easy to clean the corners. A means for supporting the rotary duster in the center of the duct must be placed inside the duct, making it cumbersome to arrange it inside the duct. C. Since it has a support means and a rotating shaft, it is heavy, and the duct support member requires considerable strength, which limits the places where it can be used. D. Continuous cleaning of a duct with a right-angled step is difficult, and it is also difficult to increase the length of the rotating shaft too much, so it is difficult to clean a long range of the duct at once.

In addition, in Conventional Example 3, a bundle of fiber strings is pulled with a rope and reciprocated inside the pipe, and the inner wall of the pipe is rubbed and cleaned by friction. In addition to being troublesome to collect, extremely large forces are required for reciprocating motion, making it impossible to use in ducts with large differences in level or large changes in cross-sectional area.

The purpose of the present invention is to provide ducts with different cross-sectional shapes and diameters, winding ducts, inclined ducts,
The scope of application is wide, including ducts with a cross section other than simple and smooth shapes such as circles, and the dust removed from the inner wall of the duct can be collected smoothly, and the duct can be uniformly cleaned and a sufficient internal cleaning effect can be obtained. To provide a duster for cleaning inside ducts for air conditioning, etc., which is excellent in performance and economy.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a duster that cleans the inside of a duct by circulating an airflow inside the duct using a blower, a suction fan, etc. Multiple air blowing holes are formed around the outer periphery of the closed bag, and the open end is pulled by a rope.

[Operation and Effects of the Invention] (1) Since the flow velocity of the airflow between the outer periphery of the duster and the inner wall of the duct increases, the duster and the inner wall of the duct
Cleaning can be done effectively by friction caused by airflow.
In addition, air is blown out from the air blowing hole, and dust can be strongly removed.

(2) By loosening the rope or pulling it, the duster can be moved, allowing the removal of accumulated dust evenly over the entire inner wall of the duct, and making it possible to clean long ducts (approximately 200 m at a time) ).

(3) A cleaning duster can move freely within the duct regardless of the structure of the duct, such as changes in the cross-sectional shape of the duct, bends in the duct, presence or absence of steps, etc. Additionally, although the bag expands in the wind, it is still small before it expands, so dust can be inserted through the small opening in the duct.

Thus, a very wide range of types of duct cleaning is possible.

(4) Dust removed by dusters can be collected at all times by placing a dust collector at the end of the duct.

(5) Dusters are extremely light and have a simple structure. Therefore, the duster can be easily handled without putting a burden on the support structure of the duct.

[Example] Hereinafter, the present invention will be explained with reference to the drawings.

A first embodiment of the duster 1 is shown in FIGS. 1 and 3.

The duster 1 is a bag body 8, and a large number of air blowing holes 81 are provided on the outer peripheral surface.

Due to the air flow 70 inside the duct 6, the duster 1 starts to fly and hits the inner wall surface of the duct 6, and at the same time blows air from the air outlet 81 to perform powerful cleaning. In addition, the part of the bag 8 towed by the rope 5 may be a frame. In addition, the code|symbol 51 is a guide rope.

FIG. 2 shows a second embodiment of the duster 1, in which a large number of ribbons 82 are attached to the duster 1 of FIG. 1 to increase the dusting action.

Next, follow the third method of cleaning the duct using duster 1.
This will be explained with figures.

Insert duster 1 into duct 6.

The dust collector 7 is connected to the outlet 61 and sucks air for dust collection, so the difference in atmospheric pressure causes the duct 6 to
An air flow 70 flows inside in the direction of the arrow.

The other end of the rope 5 connected to the duster 1 is the duct 6
It is taken out of the duct 6 through a guide pipe at an appropriate position.

If the rope 5 is pulled or loosened, the duster 1 in the duct 6 moves.

When the rope 5 is held, the duster 1 floats and dances, hitting the inner wall surface of the duct 6 and at the same time blowing air from the air suction hole 81 to remove dust.

The dust dropped by the duster 1 is carried by an air flow 70 flowing inside the duct 6 to the dust collector 7 at the outlet 61 of the duct 6 and collected therein.

Duster 1 provides the following effects that cannot be achieved with conventional cleaning tools.

(1) No need to remove ceilings or ducts other than work openings and installation locations.

(2) The applicable ducts are applicable to a wide range of sizes and shapes, regardless of whether they are for air conditioning or industrial use.

(3) Can be used to remove accumulated dust uniformly over the entire inner surface of the duct.

(4) After implementation, the residual dust in the duct will not be re-dispersed, and there will be no significant adverse effects on the working environment such as noise, vibration, dust generation, pollution, etc.

(5) Does not cause a significant increase in cost compared to conventional cleaning tools.

(Modification) The bag body 8 can be made of paper, cloth, vinyl sheet, or the like. Further, the cross-sectional shape may be appropriately selected depending on the shape of the duct, the dirtiness inside the duct, and the like.

In FIG. 3, instead of sucking air with the dust collector 7, the air may be caused to flow from the left to the right (as shown) in the duct 6 using a blower.

In this specification, the rope 5 may be a string, a wire,
It also includes chains, ropes, or rod-shaped bodies connected to each other so as to be rotatable, or the above-mentioned rod-shaped bodies combined to make the whole telescopic.

[Brief explanation of drawings]

Figures 1 and 2 are perspective views showing the first and second embodiments of the cleaning duster of the present invention, respectively.
The figure is a partially removed perspective view for explaining the use of the cleaning duster of this embodiment. In the diagram: 1... duster (duster for cleaning inside the duct), 5... rope, 6... duct, 7... dust collector (suction fan), 8... bag, 70... air flow (air flow), 81...Air outlet.

Claims (1)

[Scope of Claims] 1. A duster that cleans the inside of a duct by generating airflow using a blower, a suction fan, etc., and having a plurality of air jets around the outer periphery of a bag whose rear end is closed. A duster for cleaning inside ducts that forms a hole and whose open end is pulled by a rope.