JPS6159147A - Apparatus for cleaning duct for air conditioner - Google Patents

Abstract

PURPOSE:To obtain an apparatus for cleaning a duct automatically and quite efficiently with neither damaging the duct itself nor requiring for a worker to step into the duct, by arranging movably, in a duct for air conditioning a structure, suction means equipped with a flexible hose. CONSTITUTION:When compressed air is pumped from a compressor 12 to a nozzle 6, a great attracting force is induced in a small hose group 14 and a dust collector 15 by the action of the nozzle 6. With this state kept, when an oscillator 23 is driven to pull a traction wire 25 forward, the dust collector 15 and the small hose group 14 are moved forward via an indirectly connected flexible. hose 5. Then, a brush 21 of a vibrator apparatus 16 strokes or slides the inner surfaces to wipe off the dust attached thereto to be sucked into the flexible hose 5, and the small hose group 14 sucks the dust remaining on the inner wall sections of the duct 1 into the flexible hose 5.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a device for cleaning dust accumulated in an air conditioning duct of a structure.

(Conventional technology) 4! The air-conditioning ducts of IS-built air conditioners have accumulated a lot of dust over the years of use, and pathogens can easily breed inside these boxes, and these pathogens can spread indoors through the air-conditioning ducts. It has recently been confirmed that it can cause infection.

In addition, since the dust inside the duct is in a dry state, it has recently been learned that if the deer contains highly flammable deer, it can ignite due to static electricity and cause a fire. In recent years, it has become important to keep the inside of this duct clean.

However, in the past, cleaning (hanging) this long and narrow duct was considered to be an extremely difficult task for national electricians, and in reality, the duct had to be cut out and cleaned in designated areas, or in the case of large-diameter ducts. This method required workers to directly enter the duct and clean it, which was extremely inefficient.

(Problems to be solved by the invention) The present invention has been made in view of the above problems.
The purpose is to provide a device that automatically and highly efficiently cleans a duct without damaging the duct itself and without requiring an operator to enter the duct.

(Means for solving the problem) The air conditioning duct cleaning device according to the present invention is disclosed in Japanese Patent Publication No. 58-2
This was done by using a fluid device as shown in Japanese Patent No. 8440, and its structure is such that a suction means equipped with a flexible hose is movably installed in an air conditioning duct of a structure. The suction hose is connected to the upstream side of a suction nozzle having a cylindrical cavity in the center outside the air conditioning duct, and a minute annular gap opening toward the downstream side is defined at the periphery of the nozzle. At the same time, the annular cavity is connected to a compressor. With this configuration, when pressurized air is pumped into the annular gap, the front end of the flexible hose becomes low pressure, and a large amount of outside air is sucked in from the suction means connected thereto. A large amount of dust inside the duct is sucked together with this large amount of outside air, and this dust passes through the hollow pipe and is captured in the downstream collection point, thereby cleaning the duct.

General air cleaning devices include household or industrial vacuum cleaners, and large ones include vacuum cars, but small ones have low suction ability and small capacity, and are used for cleaning air conditioning ducts. (It cannot be used for W. On the other hand, large-sized devices are extremely expensive, and using such expensive equipment to clean the air conditioning ducts of countless buildings would not be cost-effective. turn into.

On the other hand, one major feature of the present invention is that it uses a relatively inexpensively available compressor together with special suction nozzles, and the suction nozzles are connected in series in multiple stages. Since the suction force increases almost proportionally, the suction force can be changed appropriately by simply changing this multi-stage connection, which is extremely convenient for adapting to ducts of various sizes.

(Embodiments) Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a duct cleaning system using the device of the present invention, in which 1 shows the arrangement of ducts in a medium-rise building, where the ducts 1 on each floor are connected to a single air conditioning compartment 2, and each A plurality of air outlets 3 are provided on each floor. The suction means 4 of the present invention is inserted into the duct 1 from the outlet 3 thereof, and is connected to a fluid device outside the duct 1, that is, a suction nozzle 6 via a hose 5. There is.

As shown in Japanese Patent Publication No. 58-2844.0, this suction nozzle 6 has an upstream end of an outer tube 8 fitted into the downstream end of an inner tube 7, and a minute annular shape formed between them. A cavity 9 is formed. This cavity 9 opens toward the downstream side of the outer tube 8 , and a through hole 10 is formed in the outer circumference of the outer tube 8 that defines this cavity 9 . is attached, and one end of this pressure pipe 11 is connected to a compressor 12.

The end of the hose 5 is connected to the upstream end of the inner pipe 7 of this nozzle 6, and the downstream end of the outer pipe 8 is connected to the other hose 5.
It is connected to collection 1!1113 via a. Duct 1
If the diameter of the duct 1 is large, a single nozzle 6 may be sufficient, but if the diameter of the duct 1 is large, it is necessary to suck in a large volume of air, so multiple nozzles 6 may be connected in series. be.

The compressor 12 is operated to supply pressurized air from the pressure pipe 11 to the annular gap 9 between the inner tube 7 and the outer tube 8 so that the ratio of the inflow pressure to the outflow pressure in the gap 9 is 21 or more. When pumped, this pressurized air becomes a minute slip flow in this cavity 9 and becomes extremely activated, and when released into the outer tube 8, it strongly sucks secondary air from the upstream side of the inner tube 7. That's what I do. Since the upstream side of the inner tube 7 is open into the duct 1 via the hose 5 and the suction means 4, a suction force is generated within the duct 1.

This suction means 4 is connected to the duct 1 as shown in detail in FIG.
A large number of small hose groups 14 are connected to the terminals of the flexible hoses 5 that can be moved within the hoses, and branch out radially from there;
It consists of a dust collector 15 disposed ahead of the small hose group 14 in the direction of travel, and a vibrator 16 disposed ahead of the dust collector 15 in the direction of travel. In order to maintain the radial shape as shown in the figure, the small hose group 14 is supported by inserting its ends into a support plate (not shown) having a large number of holes. Furthermore, the openings of the small hoses on the outer periphery of the small hose group 14 are brought close to the inner wall of the duct 1.

The dust collector 15 is formed to be slightly smaller than the diameter of the duct 1, and has a hollow box shape with an open front. One end of a collector hose 17 is connected to the center of the rear back of the dust collector 15, and the other end of the collector hose 17. is connected to a hole formed in the side wall of the flexible hose 5. Casters 18 are attached to the lower four corners of the dust collector 15 and connected to the flexible hose 5 by a support wire 19, so that when the flexible hose 5 is pulled forward, the dust collector 15 moves forward together with the hose 5. It is supposed to move. In order to effectively capture dust accumulated on the inner bottom surface of the duct 1 when the dust collector 15 moves forward, it is preferable to attach a downwardly inclined knocking plate 20 to the front surface of the bottom plate of the dust collector 15.

In the vibrator device 16 disposed in the front part of the dust collector 15, a large number of brushes 22 protrude from the side peripheral wall of the box body 21, and the tips of these brushes 22 are connected to the duct 1.
located close to the inner wall of the A vibrator 23 is attached to the inner bottom surface of the box body 21, and when the camera element 23 is driven, the box body 21 vibrates slightly up and down, and the brush 22 moves into the duct 1.
The dust attached to the inner surface of the duct 1 is thereby removed.

Casters 24 are attached to the four lower corners of the box body 21, and a traction wire 25 is attached to the front part of the casters 24, so that when the traction wire 25 is pulled forward, the vibrator device 16 moves forward. At this time, it is preferable that the hose 5 is also connected to the traction wire 25 so that the flexible hose 5 also moves forward within the duct.

(Function) Since the device of the present invention is configured as described above, when compressed air of a predetermined value or more is fed from the compressor 12 to the nozzle 6, it is connected to the open end of the flexible hose 5 by the action of the nozzle 6. A large suction force is generated at the ends of the small hose group 14 and the inner surface of the dust collector 15. In this state, when the vibrator 23 is driven and the pulling wire 25 is pulled forward, the vibrator device 16 directly connected to the wire 25 and the wire 25 are connected directly or indirectly. The dust collector 15 and the small hose group 14 move forward via the flexible hose 5. At this time, the brush 21 of the vibrator device 16 strikes or rubs the inner surface of the duct 1 to separate the lint adhering thereto, and the subsequent dust collector 15 then passes the separated dust through the collector hose 17 and passes it through the flexible hose 17. The small hose group 14 is connected to a pie break device 16.
The dust that has not been removed and is still attached to the inner wall of the duct 1 and the dust that has not been captured by the dust collector 15 is sucked into the flexible hose 5.

The dust sucked into this flexible hose 5 passes through the central space of the nozzle and is captured in collection II.

The air conditioning duct cleaning device of the present invention is not limited to the above embodiments, and can be modified in various ways.
If dust is not strongly adhered to the inner surface of the dow 1, the pie-breaking device 16 can be omitted. In addition, when the suction nozzle 6 is formed by fitting and combining the white color 7 and the outer tube 8, the inner ring and the outer ring are brought together and a minute annular gap is formed between them. forming part 9;
A pair of vibrators extending in the axial direction may be coupled to both sides of both rings.

(Effects) As described above, in the air conditioning duct 1~ clearing device according to the present invention, a suction means equipped with a flexible hose is movably arranged in the air conditioning duct of a structure, and the hose is connected to the air conditioning duct. It is connected to the upstream side of a suction nozzle having a cylindrical cavity in the center outside the duct, and a minute annular cavity opening toward the downstream side is defined at the periphery of the nozzle. The annular cavity is connected to a compressor and connected to the downstream side of the nozzle, so that the suction force of the suction nozzle operated outside the duct and the suction means moving inside the duct are connected to the compressor. The inside of the duct is cleaned by this method, and there is no need for a cleaner to enter the duct, and the cleaning work can be carried out extremely efficiently without having to separate a part of the duct or damage it. be.

In addition, the device of the present invention uses a combrella 1ner that can be obtained at low cost, and by connecting the unit consisting of the suction nozzle 6 and the compressor 12 in multiple stages in series, the suction force and suction capacity can be almost reduced. Since they can be increased proportionally, it is extremely easy to match these to the dimensions of the duct, and it produces extremely excellent effects that could never be achieved with conventional vacuum cleaners. .

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing one embodiment of the device according to the present invention, Fig. 2 is a sectional view showing an example of a suction nozzle used in the device of the present invention, and Fig. 3 is an explanatory diagram showing an embodiment of the device according to the present invention. It is a perspective view showing an example of a suction means. 1...Duct 2...Empty vA
5...Flexible hose 6...Suction nozzle 12...Comple tree 13...G collector 1
4...Small hose group 15...Dasl~Collector 16...Vibrator device

Claims (4)

[Claims] (1) A suction means equipped with a flexible hose is movably installed in an air conditioning duct of a structure, and the hose is connected to a suction nozzle with a cylindrical cavity in the center outside the air conditioning duct. The suction nozzle is connected to the upstream side, and at the peripheral edge of the nozzle, a minute annular gap opening toward the downstream side is defined, and the annular gap is connected to a compressor. An air conditioning duct cleaning device characterized by connecting a dust collector. (2) The suction means has a dust collector that opens in the moving direction of the flexible hose and the inside of the opening communicates with the hose. Air conditioning duct cleaning device. (3) The air conditioning duct cleaning device according to claim 2, wherein the suction means includes a vibrator that applies vibration to the inner wall of the duct in front of the dust collector. (4) The air conditioning duct cleaning device according to any one of claims 1 to 3, wherein the suction means has a large number of small hose groups that open radially at the end of the suction hose. .