JPH059105Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a cleaning tool for sweeping away dust accumulated in an air conditioning blower duct.

"Conventional technology" A lot of dust accumulates inside the air conditioning duct as it is used over time, and this dust is sent into the room as air is blown by air conditioning and heating, making the indoor air dirty and dirty.
It is unfavorable from a sanitary point of view and has a large negative impact on the human body.

Therefore, the inside of the duct must be constantly cleaned, but the duct of a building is
It is extremely difficult to clean as they are arranged like a mesh in narrow ceilings and walls.
It is technically and economically difficult to implement it frequently.

If the duct branches into many parts or has unevenness formed on its inner surface, dust tends to accumulate in the branched parts and the uneven parts, making cleaning even more difficult.

Therefore, as a means of cleaning inside this duct,
A suction pump is connected to one end or the middle of the ventilation duct, and the suction pump sucks the air inside the ventilation duct to create an airflow that flows inside the duct. It has been proposed to pass. For example, Japanese Patent Application Laid-Open No. 138584/1984.

The cleaning tool here has a structure in which a plurality of band-shaped duster pieces are provided on the main body of the windsock, and the airflow flowing through the duct causes the duster pieces to flap, thereby dusting off the dust on the inner wall and removing it by suction. It is something to do.

``Problem to be Solved by the Invention'' However, in the above-mentioned invention, in order for the duster pieces to be flapped by the air flow and be flapped against the inner wall sufficiently, that is, to the extent that dust can be removed, it is necessary to The air flow at the pump must be sufficiently fast, which requires a large capacity suction pump, which leaves many unsatisfied in terms of equipment and cost.

Further, when the cleaning tool passes, dust on the inner wall portions that cannot be dusted off by the duster fragments is not removed and remains as dirt. especially,
This problem becomes more noticeable when the inner wall has unevenness.

Furthermore, airflow will flow into the main body of the windsock, but due to the shape of the windsock, the opening for sucking in the airflow must be kept open at all times, for example via a base member, etc. . However, the use of this cap member not only increases the manufacturing process, material cost and weight, but also causes the cap member to get caught on the inner wall of the duct and get stuck, or to damage the duct lining and aluminum foil. There have been accidents that have caused damage to the equipment.

The present invention was devised to solve the above-mentioned drawbacks and meet the demands, and aims to efficiently remove dust adhering to the inner wall of a duct.

``Means for Solving the Problems'' The present invention is a blower duct cleaning tool that cleans dust inside the blower duct. This is a blower duct cleaning tool that has a duster surrounding it.

Further, a main rope for towing is attached to the opening of the bag, and the tip of a rescue rope led out from the opening is attached to the bottom of the bag.

Alternatively, a ventilation hole may be provided at the bottom of the bag, or the opening of the bag may be made flexible, or the duster piece may be made of surface adhesive tape.

"Function" In the above-mentioned configuration, the bag body is opened toward the airflow flowing inside the ventilation duct, so it is inflated by the airflow and the folded flaps provided around the outer circumferential surface are opened. Surrounds the inner wall of the ventilation duct. Not only does the bag sway within the duct due to the airflow, but the duster flaps also flutter, so the dust attached to the inner wall is brushed off by the bag itself and the duster, and the dust is removed downstream of the airflow. It is something that is thrown away and removed.

In particular, if the maximum diameter of the bag when inflated is set to be slightly larger than the opening diameter of the duct,
Not only does it ensure contact with the inner wall of the duct, but it also allows the duct itself to be swung, making it possible to shake off accumulated dust. Since it comes into full contact with the uneven portions of the inner wall, the dust that has been caught on the uneven portions can be stirred up or dusted off, resulting in a significant cleaning effect.

In addition, since the main rope for towing is attached to the opening of the bag, the bag can be positioned upstream of the airflow at the beginning of cleaning, and by gradually loosening the main rope, the bag can block the airflow. While cleaning the inside of the duct, the bag is gradually swept downstream.Furthermore, there is a catch rope attached to the bottom of the bag that leads out from the opening, so when the work is finished or stopped, If the bag is pulled up by the catching rope, the bag will be reversed and the bag can be smoothly retrieved upstream in a deflated state without trapping air. Since the part of the duster that is thought to be inside the duster can be wrapped around it, there is no need to get your hands or surroundings dirty when collecting it.

Next, since a ventilation hole is provided at the bottom of the bag, if the opening area of the duct becomes smaller, for example, the air in the bag can be smoothly released from this ventilation hole to reduce the diameter. I can do it. Further, by blowing out the air leaking from the vent hole of the bag expanded by the air flow, it will be possible to blow off dust from the inner wall of the duct on the downstream side.

Furthermore, since the opening of the bag is configured to be flexibly deformable, even if the opening area of the duct becomes smaller, for example, as described above, the diameter of the bag can be reliably reduced to accommodate this.

Further, since the duster piece is made of surface adhesive tape, if the duster piece comes into contact with the concave portion of the duct inner wall where dust tends to accumulate, the dust can be reliably attached to the surface adhesive tape and removed.

``Example'' The blower duct cleaning tool of the present invention is particularly effective for ducts such as those shown in FIGS. 4 and 5.

That is, in FIG. 4, when a new ventilation hole 2 is provided from the main duct 1, it is common to connect a flexible bellows-shaped branch duct 3 as shown in the figure. As is well known, this bellows-shaped branch duct 3 has a groove with a V-shaped cross section formed on its inner circumferential surface, so there is a problem in that dust tends to collect and adhere to this groove portion.

Furthermore, as shown in Fig. 5, not only when a branch duct 3 is newly added and connected, but also when the branch duct 3 is branched from the main duct 1 from the beginning, dust may adhere to this branch part. This often happens, and the cleaning tool may also get caught in the branch.

An embodiment of the air duct cleaning tool of the present invention will now be described with reference to the drawings.

The bag body 4 is made of a flexible sheet material such as a synthetic resin sheet and has a substantially parachute shape.
The opening 5 also maintains flexibility without disposing a cap or the like, and a plurality of ropes are connected like a kite string from this opening 5 and bundled with the main rope 6, for example,
One end of this main rope 6 is moored to a predetermined position upstream of the air flow in the main duct 1 for traction.

Further, the tip of a catching rope 7 is attached to the bottom of the bag 4, and the catching rope 7 is led out from the opening 5 and moored near one end of the main rope 6 described above in the same manner.

On the outer peripheral surface of the body of the bag body 4, there are folded flaps 8.
are provided around the area. This duster piece 8 is, for example,
Fold the strip of cloth alternately up and down along the width,
One side is sewn to the body, giving it a frilled appearance. In the illustrated embodiment, there are two duster pieces 8, but the number should be selected depending on the type of use and is not limited to this number.

In this case, if the duster piece 8 is made of surface-adhesive tape, it becomes possible not only to simply dust off the dust, but also to allow the dust to adhere to it.

In addition, an appropriate number of ventilation holes 9 are provided at the bottom of the bag 4 so that the air flow that flows into the bag 4 and inflates the bag 4 can be ejected in the downstream direction or toward the inner wall of the duct. It's summery.

In the configuration described above, by positioning the opening 5 of the bag 4 toward the upstream side of the air flow and loosening the main rope 6, the bag 4 containing the air flow is inflated and gradually moved into the duct. It is swept downstream and shakes at the same time to shake off the dust inside the duct.

In addition, the duster piece 8 flutters due to this air flow, so that it is possible to dust off the dust.
Cleaning is accomplished by being blown downstream by the air flow.

Furthermore, once the cleaning work is completed, the main rope 6 can be towed and recovered, but the fifth
As shown in the figure, if the duct is branched and difficult to collect, the opening 5 can be directed downstream of the air flow by pulling the catcher rope 7 and inverting the bag 4. Therefore, the bag body 4 is in a deflated state, and it can be smoothly collected, and dust attached to the duster piece 8 and the outer peripheral surface of the bag body 4 can also be collected while being wrapped up.

``Effect of the invention'' Since the present invention has the structure as explained above, the bag body sways in the duct due to the air flow, and the dust particles fly, so that the dust attached to the inner wall is removed from the bag body. Dust it off itself and with a duster,
It can be removed by blowing it downstream of the airflow,
The duct itself can also be swayed, making it possible to shake off the dust that has adhered to it.Furthermore, since the surrounding folded duster comes into contact with the uneven parts of the inner wall without any corners, it can be pulled into the uneven parts. A significant cleaning effect can be obtained by lifting up or shaking off the dust that has previously adhered to the surface.

In addition, when the work is finished or stopped, the bag can be turned over by pulling the rescue rope and smoothly retrieved upstream in a deflated state without trapping air. The duster can be wrapped around the part of the duster that has a lot of dust attached to it, so you don't have to get your hands or surroundings dirty when collecting it.

Next, since a ventilation hole is provided at the bottom of the bag, even if the opening area of the duct becomes small, the air inside the bag can be smoothly released from this ventilation hole and the diameter can be reduced. By blowing the air leaking out to the outside, it is also possible to blow off dust from the inner wall of the duct on the downstream side.

Furthermore, since the opening of the bag is configured to be flexible and deformable, even if the opening area of the duct becomes smaller or a branch is reached during collection, the diameter of the bag can be reduced to accommodate this. The present invention has many excellent effects, such as being able to reliably remove dust by constructing the deflated duster with surface-adhesive tape, being simple in construction, and easy to operate. It is something.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention. FIG. 2 is a front view. FIG. 3 is a front view at the time of recovery. FIG. 4 is a perspective view of a bellows-shaped duct. FIG. 5 is a cross-sectional view of a duct with a branched structure. Explanation of symbols, 4...Bag body, 5...Opening, 6...
...Main rope, 7...Supporting rope, 8...Flitter piece, 9...Vent hole.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A blower duct cleaning tool for cleaning dust inside the blower duct, which has pleats on the outer circumferential surface of the bag body 4 that opens toward the airflow flowing inside the blower duct. A blower duct cleaning tool consisting of a duster piece 8 installed around the periphery. (2) A main rope 6 for towing is attached to the opening 5 of the bag body 4.
2. The blower duct cleaning tool according to claim 1, further comprising: a top end of a rescue rope (7) led out from the opening (5) attached to the bottom of the bag body (4). (3) The air duct cleaning tool according to claim 1, wherein a ventilation hole 9 is provided at the bottom of the bag body 4. (4) The air duct cleaning tool according to claim 1, wherein the opening 5 of the bag body 4 is configured to be flexible and deformable. (5) The blower duct cleaning tool according to claim 1, wherein the duster piece 8 is composed of both adhesive tapes.