JPH0679248A - Cleaning method for duct - Google Patents

Abstract

PURPOSE:To easily withdraw an air hose and to uniformly clean the inside of a duct by putting a guide member connected to the air hose into the duct, withdrawing this member by the suction effect of a dust collector, hauling the member to withdraw the member further to the dust collector side, removing the guide member, actuating the air hose and pulling the air hose in an opposite direction. CONSTITUTION:The dust collector 4 is connected to a chamber 3 and a hollow spherical body 10 is put into the duct 1 for air conditioning from its aperture. The hollow spherical body 10 is sucked by the suction effect of the dust collector 4 and is moved in the duct 1 toward the chamber 3. The hollow spherical body 10 is taken out and a fine cord 9 is hauled upon arrival at the chamber 3. As a result, the rope 8 as the guide member is pulled and eventually the front end of the air hose 6 is withdrawn into the chamber 3. The rope 8 is thereafter removed and while the air hose 7 is actuated, the air hose is pulled in the opposite direction at a prescribed speed. The shaken-off dust is sucked into the dust collector 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a duct cleaning method.

[0002]

2. Description of the Related Art Conventionally, for example, to clean an air conditioning duct, an operator enters the duct to remove dust with a cleaner or a remote-controlled self-propelled vehicle equipped with a rotating brush or the like. , I was running this.

There are problems with both the method in which the worker enters and the method in which the vehicle is run. That is, since the duct is bent at various angles such as vertical, horizontal, and diagonal, and the cross-sectional area is different in the middle part, etc., there are actually workers entering and running the self-propelled vehicle. Then, the range that can be cleaned is limited.

Especially for long vertical sections of ducts,
It is not possible to drive a self-propelled vehicle, and it is quite difficult to do it manually. Therefore, the conventional method inevitably causes a portion left uncleaned.

Further, although the duct is provided with a damper at a certain place, in any of the above-mentioned methods, a door is cut out at the damper portion to temporarily exit the damper or leave the self-propelled vehicle. , You have to go in again through the carved doorway or put in a self-propelled car. And
Since the duct is installed in an extremely narrow place such as the ceiling, such work requires a great deal of time and labor.

Further, recently, a cleaning method using an air hose has come to be performed. In this method, an air hose is put in the duct, and the tip of the air hose is violently shaken by the force of the air blown out, so that dust adhering to the inner surface of the duct is knocked off at the tip of the air hose. Further, the dust that has been knocked off is pushed forward by the jetting air.

According to this method, it is possible to clean the duct in response to bending of the duct or changes in the cross-sectional area, but it is difficult to feed the air hose into the duct. That is, the air hose ejects air strongly from the tip, and since the air hose itself has flexibility and is easy to bend, if you try to send the air hose, it will be good for a short distance, but it will go to a certain extent. And sending becomes impossible.

In order to solve this problem, it is conceivable that a portion near the tip of the air hose is held by a remote-controlled self-propelled vehicle and the air hose is fed by the traveling of the self-propelled vehicle. The same problem as in the conventional cleaning method using a self-propelled vehicle occurs. Further, there is also a problem that the cost is high because a self-propelled vehicle and a remote control device are required.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and is achieved by using an air hose for cleaning and using a dust collector and a guide member that is drawn in by the suction action of the dust collector. , Without the need for a large-scale device such as a remote-controlled self-propelled vehicle, it is possible to easily clean with an air hose, so that the problems of the conventional method can be solved in a blunt manner. It is intended to provide a cleaning method for the duct.

[0010]

SUMMARY OF THE INVENTION However, the gist of the present invention is to connect a dust collector to a duct and to connect a lightweight guide member of a required length to the tip of the air hose, and to connect the tip of the guide member. In the duct and pull it to the take-out position of the guide member by the suction action of the dust collector, and further hit the guide member to pull the tip of the air hose to the dust collector side of the duct, then remove the guide member and operate the air hose. Meanwhile, the duct cleaning method is characterized in that the duct is pulled in a direction opposite to the above at a predetermined speed.

The guide member may be made of any material as long as it can be attracted by the suction action of the dust collector, and a lightweight rope having a diameter of about 3 mm is experimentally preferable. The length of the duct should be at least enough to cover the entire length of the duct.

When a rope is used as the guide member, a solid body such as a hollow sphere made of plastic or rubber, sponge, styrofoam or the like may be connected to the tip of the rope directly or through a thin cord or a thin wire. , The pulling-in by suction is performed more quickly and surely. The size of the three-dimensional body is set to a size suitable for passing through between the valve plates of the damper arranged in the middle of the duct.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. In the figure, 1 is an air conditioning duct,
2 is an air conditioner. Reference numeral 3 denotes a chamber provided at a connecting portion between the air conditioning duct 1 and the air conditioner 2. Four
Is a dust collector connected to the chamber 3 via a pipe 5. Reference numeral 6 is an air outlet of the air conditioning duct.

7 is an air hose, 8 is the air hose 7
Is a guide member connected to the distal end of the, and a lightweight rope is used in the illustrated embodiment. Reference numeral 9 is a thin cord connected to the tip of the guide member 8, and a rubber hollow sphere 10 is connected to the tip thereof.

When the air hose 7 is drawn into the air conditioning duct 1, first, one end of the air conditioning duct 1 is opened, and the hollow sphere 10 is inserted through the opening.
The hollow sphere 10 is attracted by the suction action of the dust collector 4, and moves in the air conditioning duct 1 toward the chamber 3. And when it reaches the chamber 3, the chamber 3
The hollow sphere 10 is taken out from and the thin string 9 is struck. As a result, the rope 8 as a guide member is pulled, and eventually the tip of the air hose 7 is pulled up to the chamber 3. This completes the drawing of the air hose 7.
Incidentally, the operation of the air hose 7 is stopped until this time. Then, after that, the rope 8 as a guide member is removed from the air hose 7, and the air hose 7 is operated and pulled in a direction opposite to the above at a predetermined speed. Then, the dust that has been knocked off is sucked up by the dust collector 4.

[0016]

Since the present invention is constructed as described above and is cleaned by using an air hose, no matter what angle the duct bends or the cross-sectional area changes, In addition, it can be cleaned corresponding to how narrow it is.

Further, since the air hose is drawn in by using the guide member which is attracted by the suction action of the dust collector, the air hose can also be drawn in and cleaned even in the long vertical portion of the duct, which has been difficult to clean conventionally. . Moreover, even if a damper is arranged in the middle of the duct, the air hose can be drawn through the gap between the valve plates. Thus, it is possible to completely eliminate the troublesome work performed at the damper portion as in the conventional method.

Further, since the tip end of the air hose is once pulled to the deepest part of the duct and then pulled out while being operated, the inside of the duct can be thoroughly cleaned from end to end.

Further, in the case of a duct to which fine powder adheres, such as the duct of a buffing device, since the powder is concentrated and deposited on the suction port, it is possible to use the outlet like a conventional air hose. When I try to put it in from the side and clean it
Although the powder blown off by the air is clogged and cannot be cleaned, according to the present invention, the air hose is actuated after the tip of the air hose is once drawn from the outlet side to the suction side. The powder on the suction port side can be first blown off to widen the mouth, and therefore, cleaning can be effectively performed even in such a case.

Also, the means for pulling the air hose into the duct is much simpler and easier than the case of using a remote-controlled self-propelled vehicle such as a conventional air hose. is there.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state in which a guide member is put in a duct, which is shown by omitting a middle portion of a thin cord.

FIG. 3 is a partially enlarged view of an embodiment of a guide member.

FIG. 4 is a partial cross-sectional view of the guide member taken out of the chamber.

FIG. 5 is a cross-sectional view showing a state where an air hose is operated.

[Explanation of symbols]

 1 Air Conditioning Duct 2 Air Conditioner 3 Chamber 4 Dust Collector 5 Pipe 6 Air Outlet 7 Air Hose 8 Guide Member 9 Thin String 10 Rubber Hollow Sphere

[Procedure amendment]

[Submission date] March 25, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

[Figure 3]

[Figure 4]

[Figure 5]

Claims (3)

[Claims] 1. A dust collector is connected to a duct, and a lightweight and required length of guide member is connected to the tip of an air hose. The tip of the guide member is inserted into the duct and guided by the suction action of the dust collector. Pulling the member to the take-out position, further striking the guide member to pull the tip of the air hose to the dust collector side of the duct, then removing the guide member and pulling the air hose in the opposite direction at the specified speed while operating the air hose. Cleaning method for ducts. 2. The guide member is a thin rope.
How to clean the described duct. 3. The method for cleaning a duct according to claim 1, wherein the guide member is a rope having a lightweight solid body connected to a tip end thereof directly or through a thin cord or a thin wire.