JP6276451B1 - Duct cleaning tool - Google Patents

Abstract

It is a main object of the present invention to provide a duct cleaning tool capable of easily cleaning a duct inner wall contaminated with accumulated oil, soot, dust and the like.
The present invention includes, for example, a box having rotating blades, a detachable brush that rotates in conjunction with the rotating blades, and a buffer box that supports the box, and the box having rotating blades includes A duct cleaning tool characterized by having a hole for sending in compressed air as power for rotating the rotating blades and a hole for letting out the compressed air sent in can be mentioned.
According to the present invention, for example, many ducts can be washed at a time by using a large air compressor. Further, the air compressor can be easily procured near the site, and it is possible to eliminate the need to carry a power source for a long time to operate the duct cleaning tool.
[Selection] Figure 1

Description

  The present invention belongs to the technical field of cleaning tools. The present invention relates to a cleaning tool for an inner wall of a duct (particularly a smoke exhaust duct).

  The duct is usually made of metal or polymer resin, and has a cylindrical shape such as a square, a circle, or an ellipse, and is formed by combining a straight pipe, a bent pipe (elbow), a branch pipe, and the like. . And a duct is a pipe | tube which conveys gas, and is mainly arrange | positioned for the objectives, such as an air conditioning in a building, ventilation, or flue gas.

  The interior of the building is maintained in a comfortable environment by installing a duct and performing air conditioning, ventilation, smoke exhaust, etc., but oil and dust are attached to the inner wall of the duct tube by transporting dirty air. Dirt such as kimono will accumulate. Accumulation of dirt in the duct results in a reduced function of the duct and thus a blockage of the duct. If the duct becomes blocked, it may even be necessary to replace the duct itself. In addition, in the case of smoke exhaust ducts at restaurants, for example, yakiniku restaurants, the accumulated dirt contains oil, so there is a risk of generation of malodors and ignition.

  Periodic cleaning or cleaning is indispensable in order to avoid deterioration of the function of the duct due to accumulation of dirt in the duct. However, it is very difficult to clean and clean the inside of the duct because an operator brings a cleaning tool inside and the work has a narrow opening. Conventionally, as a method of cleaning and cleaning such ducts, for example, when dirt is light, a method of removing dirt by flowing water with the water pressure, a brush is inserted from the outside, and dust that floats is collected by a dust collector In the case where the dirt is severe, there is a method in which a chemical or hot water is poured inside the duct to dissolve and remove the dirt. However, there is a problem that if the ceiling duct is cleaned with a liquid such as water, the room is immersed in water. Moreover, when there is a grilled meat table near the entrance of the duct, for example, it is necessary to remove it and perform cleaning. Further, when the duct is bent, it is difficult to clean the inside.

  Patent Document 1 discloses a cleaning in a branch pipe that has a function of cleaning the inside of a branch pipe for valve attachment connected to a fluid transport pipe and discharging the fluid in the branch pipe by rotating around an axis along the insertion / extraction direction. An apparatus is disclosed. The advantage of the cleaning tool is that the material scraped off from the inner surface of the pipe can be discharged to the outside together with the fluid in the discharge pipe without leaving it in the pipe. The said cleaning apparatus is used for a fluid transport pipe, and the axis | shaft of a cleaning tool does not have flexibility.

  Patent Document 2 discloses an air-conditioning duct nozzle and an air-conditioning duct cleaning device for cleaning dust that is firmly attached to the inner surface of the duct. In the cleaning device, a shaft is attached to the tip of a hose that guides high-pressure air, a plurality of injection ports for injecting high-pressure air in a substantially radial direction are formed on the outer peripheral surface of the shaft, and an impeller is provided on the inner peripheral surface of the cover. Have. The cleaning device floats the dust on the inner surface of the air conditioning duct by the released air and can obtain the propulsive force of the nozzle, and the nozzle adheres by propelling while turning along the inner wall surface of the air conditioning duct. The dust can be cleaned. However, the cleaning device is effective for dust that can be blown away by high-pressure air, but does not have the effect of scraping off the accumulated dirt.

Japanese Utility Model Publication No. 63-98790 JP 2002-102812 A

  The main object of the present invention is to provide a new duct cleaning tool capable of cleaning a duct contaminated with accumulated oil, soot, dust, or the like, particularly an inner wall of a smoke exhaust duct in a restaurant.

  As a result of intensive studies, the present inventor can solve the above problem by rotating the cleaning brush attached to the tip of the duct cleaning tool using the force of the compressed air generated by the air compressor. As a result, the present invention has been completed.

Examples of the present invention include the following.
[1] A box having a rotating blade, a detachable brush that rotates in conjunction with the rotating blade, and a buffer box that supports the box, and the box having the rotating blade has power for rotating the rotating blade. A duct cleaning tool comprising a hole for feeding compressed air and a hole for releasing the sent compressed air.
[2] Furthermore, an air hose for sending compressed air into the box, an air compressor communicating with the box via the air hose, a flexible hollow member inserted through the air hose, or the buffer via the hollow member The duct cleaning tool according to the above [1], including a suction device communicating with the box.
[3] The duct cleaning tool according to [1] or [2], further including a flexible and extendable flexible hollow member that is inserted through the hollow member together with the air hose.
[4] The duct cleaning tool according to any one of [1] to [3], wherein the duct is a smoke exhaust duct or a smoke exhaust duct in a restaurant.

[5] A duct cleaning method using the duct cleaning tool according to any one of [1] to [4].

Examples of the effects of the present invention include the following.
If a large air compressor is used, many ducts can be washed at once. Further, the air compressor can be easily procured near the site, and it is possible to eliminate the need to carry a power source for a long time to operate the duct cleaning tool. The compressed air generated by the air compressor also assists suction by the suction machine, and can reduce the burden on the suction machine.

It is a schematic diagram of the washing | cleaning apparatus containing the duct washing | cleaning tool which concerns on this invention. It is sectional drawing of the duct cleaning tool vicinity which concerns on this invention. The usage example of the washing | cleaning apparatus containing the duct washing | cleaning tool which concerns on this invention is shown.

Hereinafter, the present invention will be described in detail.
A duct cleaning tool according to the present invention (hereinafter referred to as “the cleaning tool of the present invention”) is a box having rotating blades (hereinafter simply referred to as “rotating blade box”), a detachable rotating in conjunction with the rotating blades. And a buffer box (hereinafter simply referred to as “buffer box”) carrying the box, and the rotary blade box is compressed as a power for rotating the rotary blade. It has the hole for sending in air, and the hole for releasing the sent compressed air.

1 Rotary blade box This invention cleaning tool contains a rotary blade box.
The rotary blade box is usually cylindrical and made of metal, and has a hole for sending compressed air into the box (hereinafter referred to as “suction hole”), and a hole for releasing the compressed air sent into the box (hereinafter referred to as “suction hole”). It is called “discharge hole”. The rotary blade box has a rotary blade that rotates by the force of compressed air, and the rotary blade is held hollow by a rotary shaft. The front (brush side) of the rotary blade box is normally closed.

  The suction hole is provided at a position where the compressed air is fed so that the rotating blade is rotated by the compressed air, and is usually present at a position close to the rotating blade. The number of suction holes is appropriately selected, but 1 to 3 is appropriate, and 1 or 2 is preferable. The shape of the suction hole is usually circular. Further, a nozzle for connecting an air hose, which will be described later, which is a flow path for compressed air, can be provided in the suction hole.

  The discharge hole is usually provided on the back surface and / or side surface of the rotary blade box, but is preferably provided on the back surface. The size of the discharge hole is appropriately selected in consideration of the shape and number of holes. The number of discharge holes is appropriately selected as one or more in consideration of the size and position of the holes. The shape of the discharge hole is not particularly limited as long as compressed air can be released, and examples thereof include a circle, an ellipse, a quadrangle, a fan, and a slit.

The material of the rotary vane box is usually metal. Examples of such metals include stainless steel, steel, iron, and brass.
The number of blades of the rotary blade is appropriately selected, but about 3 to 8 blades are appropriate. The material of the rotary blade can be the same as that of the rotary blade box.

2 Brush The cleaning tool of the present invention includes a brush.

  The brush is not particularly limited as long as it can clean the inner wall of the duct by its rotation. Usually it has a shaft and hairs radially planted on the shaft. Examples of such a brush include a tube brush, a roller brush, and a cup brush. Among these, a tube brush is preferable. The material of the brush hair is not particularly limited as long as the dirt accumulated on the inner wall of the duct can be scraped off. For example, metals such as brass, iron, stainless steel, synthetic resin such as nylon, polyethylene, plant fiber, animal hair, etc. Natural materials are listed. Among these, metals such as brass, iron, and stainless steel are preferable. In particular, a metal wire brush is suitable.

  Moreover, the brush used for the cleaning tool of the present invention is selected according to the size (inner diameter) in the duct to be cleaned. Brushes suitable for cleaning the inner wall of the duct usually have a bristle diameter around the axis that is equal to or slightly smaller than the inner diameter of the duct.

  A brush suitable for the cleaning tool of the present invention is generally marketed under the name of a wire tube brush or the like, and can be easily obtained. Further, the connection means between the brush and the rotary shaft of the rotary blade is not particularly limited, and examples thereof include welding, screw screwing, screwing, pinning, and adhesion.

3 Buffer Box The cleaning tool of the present invention includes a buffer box.

  The buffer box is one or more times larger than the rotary blade box, and the rotary blade box can be supported on the inner side surface of the buffer box. The buffer box is open on the brush side (front), and even if it supports the rotating blade box, the space that can be contaminated with the brush and the compressed air discharged from the rotating blade box. However, it has the space which can move to the hollow member mentioned later. The buffer box has an opening communicating with the hollow member. The buffer box and the hollow member are firmly connected, but may be detachable.

A brush having a bristle length of several centimeters (hereinafter referred to as an “auxiliary brush”) can be wound around the buffer box so that the bristle stands upright in a substantially vertical direction with respect to the buffer box. With this auxiliary brush, the cleaning tool of the present invention can be handled more smoothly even if there is a protrusion such as a screw in the duct. The auxiliary brush is suitably installed at the rear (hollow member side) of the buffer box, and is preferably installed at the end. Although the length of the hair of an auxiliary brush is selected suitably, it is about 1-3 cm normally. The width of the auxiliary brush is appropriately selected, but is usually about 0.5 to 2 cm. Examples of the material of the hair of the auxiliary brush include the same materials as those of the brush, but are preferably made of metal.
The auxiliary brush is usually fixed to the buffer box by welding or an adhesive.

The material of the buffer box is usually metal. Examples of such metals include stainless steel, steel, iron, and brass.
The rotary vane box is usually carried on the buffer box by welding.

4 Air Hose, Air Compressor The cleaning tool of the present invention includes an air hose (hereinafter simply referred to as “air hose”) for sending compressed air to the rotary blade box, or an air compressor (hereinafter referred to as “air hose”) that communicates with the rotary blade box via the air hose. Simply “air compressor”).

The air hose is for supplying the compressed air generated by the air compressor to the rotary vane box and serves as a flow path for the compressed air. The air hose is not particularly limited as long as it can withstand the pressure of compressed air and is normally used as an air hose. Commercially available products can be used.
The length of the air hose is selected as appropriate, as long as the rotary blade box and the air compressor can be sufficiently communicated with each other.

The air compressor is for generating compressed air that serves as power for rotating a brush attached to the tip via a rotary blade. There is no particular limitation as long as compressed air can be continuously generated and discharged, and an oil type or an oil-free type may be used. Also, a small air compressor of about 10 L tank, a large capacity of 80 L tank or a large one that is mounted on a truck and moved, the number of cleaning tools of the present invention to be operated simultaneously and the length of a duct to be cleaned It is appropriately selected depending on the size. In general, the larger the cleaning tool of the present invention operated simultaneously, the larger the air compressor is required.
The air compressor can be carried to the site, but it can also be procured at or near the site, which is easier depending on the size, weight, capacity, etc. of the air compressor.

5 Hollow Member The cleaning tool of the present invention can include a flexible hollow member (hereinafter simply referred to as “hollow member”) through which the air hose is inserted.

  The hollow member serves as a passage for guiding the air hose to the buffer box or the rotary blade box, and also serves as a passage for discharging dirt such as dust and oil scraped off from the inner wall of the duct by the brush to the outside of the duct.

  The hollow member is usually tubular and airtight, and the air hose is inserted into the hollow portion and is disposed so as to cover the air hose. The material is not particularly limited as long as it has flexibility, but a resin material is usually used. Examples of such a resin include synthetic rubber, polyethylene, polypropylene, and nylon.

  The length of the hollow member is appropriately selected according to the length of the duct to be cleaned. The transverse cross section of the hollow member is usually circular, and its size (inner diameter) is appropriately selected. However, the air hose can be inserted, dirt that has been scraped off by the brush can be moved, and discharged out of the duct. That's fine.

The hollow member is connected to the buffer box and interposed between the buffer box and a suction machine described later. The hollow member may have a branching portion in the middle for connection with the suction machine. In the case of a single hose-like hollow member that does not have a branching portion in the middle, it is divided into at least two branches, one of which is connected to the hollow member, the air hose is inserted, and the other is connected to the suction machine The tube can be used with a hollow member.
The branched portion or branch pipe of the hollow member and the suction machine are connected via an airtight hose.

  The branch pipe only needs to be divided into at least two branches, and may have a pipe that branches further. In addition, the branch pipe is usually a straight pipe through which the air hose is inserted, and has one or more pipes that branch vertically or obliquely from the straight pipe.

  The material of the branch pipe is not particularly limited, and examples thereof include metals and resins. Examples of such metals include stainless steel, steel, iron, and brass. Examples of such a resin include polyvinyl chloride and polyethylene. Moreover, the said branch pipe is normally airtight.

6 Suction Machine The cleaning tool of the present invention can include a suction machine (hereinafter simply referred to as “suction machine”) communicating with the buffer box via a hollow member. With this suction device, dirt such as dust and oil scraped off from the inner wall of the duct with the brush can be quickly discharged out of the duct.

The suction device is not particularly limited as long as it can suck dirt such as dust and oil scraped off from the inner wall of the duct, and examples thereof include a vacuum, a vacuum cleaner, a dust collector, an electric pump, and a gasoline pump. Among these, a vacuum, a vacuum cleaner, and a dust collector are preferable. Further, among vacuums, a powerful one for business use, for example, a high vacuum type and a large air volume type is preferable.
As a suction machine suitable for the cleaning tool of the present invention, for example, TVC-3200 type power back cleaner manufactured by Higashihama Kogyo Co., Ltd. may be mentioned.

7 Others 7.1 Flexible Hollow Member The cleaning tool of the present invention can further include a flexible and extendable flexible hollow member (hereinafter simply referred to as “flexible hollow member”) that is inserted through the hollow member together with the air hose. Such a flexible hollow member is usually tubular, and can be contracted from the stretched state to the contracted state by contracting in the longitudinal direction of the hollow member, for example, an accordion type (accordion type), and vice versa. Can stretch to the state. The flexible hollow member covers parts such as an air hose, a hollow member, a shock absorber box, etc. after the duct is cleaned, or when the brush is recovered from the duct in addition to the stretched state from the contracted state. It has a function of preventing the scattering and dropping of dirt such as dust and oil adhering to them.

  The inner diameter of the flexible hollow member is larger than the outer diameter of the hollow member, and is usually up to approximately the outer diameter of the duct. When the inner diameter of the flexible hollow member is approximately the same as the outer diameter of the duct, the flexible hollow member can be directly connected to or fixed to the duct. At that time, the connection or fixation can be reinforced by an appropriate reinforcing member such as a rope or a belt. When the diameter of the flexible hollow member is smaller than the diameter of the duct, for example, a hollow joint member can be used to connect the hollow member and the duct. In the connection, the connection can be reinforced (fixed) with an appropriate reinforcing member such as a rope or a belt. By connecting the flexible hollow member to the duct directly or using a joint member, the flexible hollow member can be easily extended from the contracted state to the extended state by one person or one hand.

  The length in the longitudinal direction in the extended state of the flexible hollow member is appropriately selected according to the length of the air hose or the hollow member. For example, from the branch portion of the hollow member (the branch portion when a branch pipe is used) The length from the root to the tip of the brush can be mentioned. Moreover, it may be more or less. Moreover, the length of the major axis direction in the contracted state of the flexible hollow member is suitably 1/3 to 1/20 of the extended state, and preferably 1/5 to 1/20.

  The flexible hollow member preferably has a bellows structure that repeats mountain folds and valley folds in the longitudinal direction, and has a reinforcing member made of an annular or spiral wire or the like in the mountain fold portion or the valley fold portion. More preferably.

The material of the flexible hollow member is not particularly limited as long as it has flexibility, but it is usually made of light metal, resin, or a composite material thereof, or made of a ring or spiral wire with them. Can be mentioned. Examples of the light metal include aluminum. Examples of the resin include synthetic rubber, polyethylene, polypropylene, and nylon. The flexible hollow member usually has airtightness.
What has a suitable property as a flexible hollow member is marketed as a duct product by brand names, such as a flexible duct and a flexible tube. These commercially available products can be used as they are or as they are appropriately processed as flexible hollow members.

  The flexible hollow member is normally placed or connected to the insertion port of the duct at the start of the duct cleaning operation, and covers the brush, buffer box, air hose, and air hose through the hollow portion of the flexible hollow member. A hollow member or the like is inserted into the duct. After the duct cleaning, the flexible hollow member is stretched from the contracted state to the extended state, and the air hose, the hollow member, the cushioning box, or the brush or the like in addition to them is collected from the duct while being covered with the flexible hollow member. Thereby, it is possible to prevent dirt such as dust and oil adhering during the cleaning process from being scattered and dropped onto the surroundings, for example, on the yakiniku table or in the store.

7.2 Duct The duct that can be cleaned with the cleaning tool of the present invention is not particularly limited as long as it is a duct that can use the cleaning tool of the present invention. it can. The cleaning tool of the present invention is preferably used in a smoke exhaust duct. The smoke exhaust duct is usually disposed in a restaurant such as a factory or a yakiniku restaurant in order to remove smoke from the building. Smoke is a mass of air containing fine particles that can result from incomplete combustion, and usually contains soot, dust, oil, harmful fine particles, etc. Is remarkable.

7.3 Method of Using the Cleaning Tool of the Present Invention The cleaning tool of the present invention can be used as follows.
The air hose is inserted into the hollow member or branch pipe, the air hose and the hollow member are attached to the cleaning tool of the present invention to which the brush is attached, the branch pipe is attached to the hollow member as necessary, and the branched portion of the hollow member or the branch pipe And a suction machine are connected via a suitable suction hose, and a flexible hollow member is optionally set. The order of assembling is appropriately selected.

  Then, the cleaning tool of the present invention is inserted into the duct to be cleaned, and the air compressor is operated. Compressed air generated by the operation of the air compressor is sent to the rotary vane box through the air hose. The rotary vane in the rotary vane box rotates, and the brush at the tip rotates in conjunction with it to clean dirt on the inner wall of the duct. can do.

In addition, by cleaning the duct inner wall with a brush or operating the suction machine after cleaning, dirt on the duct inner wall scraped off can be sucked and discharged out of the duct. At that time, if the discharge operation by the suction machine is performed while the air compressor is operated, the force of the compressed air by the air compressor is applied, so that the dirt can be effectively discharged out of the duct.

  Hereinafter, the cleaning tool of the present invention or the cleaning apparatus including the same will be described more specifically with reference to the drawings. However, the present invention is not limited to the embodiments described in the drawings.

  FIG. 1 is an example of a cleaning apparatus A including the cleaning tool of the present invention, and FIG. 2 is an enlarged cross-sectional view of the vicinity of a buffer box 8 carrying a rotary blade box 2 therein. In FIG. 1, description of the hollow member 7 and the like is omitted in the middle.

  In this example, a rotating blade 1 having a plurality of blades is held by a rotating shaft 1 ′ that passes through the longitudinal center line of the rotating blade box 2 and is arranged near the front (brush side), and is a compression for rotating the rotating blade 1. Two suction holes for feeding air into the rotary blade box 2 are provided near the rotary blade 1. The air hose 5 is connected to a nozzle installed in the suction hole, and the air hose 5 exits from the opening of the buffer box 8 and passes through the hollow part 7 and the hollow part of the branch pipe 10 to the air compressor 6. It is connected. Two discharge holes 3 are provided behind the rotary blade box 2 (on the hollow member side) for releasing the compressed air sent to rotate the rotary blade 1.

  The rotating shaft 1 ′ protrudes from the rotating blade box 2, and a detachable metal brush 4 is attached through a joint.

  The front (brush side) of the buffer box 8 is opened, and a smaller rotary blade box 2 is carried by welding on the front side of the buffer box 8. Since the rotary blade box 2 is smaller than the buffer box 8, there is a space for dirt on the inner wall of the duct scraped off by the brush 4 to enter the buffer box 8, and the compressed air that has come out from the discharge hole 3 of the rotary blade box 2 There is a space that can move to the hollow member 7.

  The hollow member 7 is made of resin, and is connected to the buffer box 8 on the one hand and the metal branch pipe 10 on the other hand. A suction machine 9 is connected to an opening of the branch pipe 10 extending in an oblique direction via a hose 12.

FIG. 3 shows a use state (working example) of the cleaning apparatus A including the cleaning tool of the present invention. In the figure, the duct 20 on the lower side is a smoke exhaust duct that sucks in smoke from the barbecue table 30 having a yakiniku roaster at the top. The diameter of the brush 4 used in the cleaning apparatus A including the cleaning tool of the present invention is selected according to the inner diameter of the duct 20. An auxiliary brush 13 is wound around the buffer box 8. Further, the flexible hollow member 11 in a contracted state is connected to the entrance of the duct 20 on the yakiniku table 30, and after the duct is washed, the flexible hollow member 11 is extended and passed through the hollow portion, so that the brush 4 and the buffer box 8 The air hose 5, the hollow member 7, etc. can be recovered. As a result, it is possible to prevent even the slightest scattering and dropping of dirt such as oil and dust that have been scraped off.

The cleaning tool of the present invention is useful, for example, for removing dirt such as oil, soot, and dust accumulated in a flue gas duct disposed on a barbecue table in a yakiniku restaurant.

A Cleaning Device 1 Including the Cleaning Tool of the Present Invention Rotating blade 1 ′ Rotating shaft 2 Rotating blade box 3 Discharge hole 4 Brush 5 Air hose 6 Air compressor 7 Hollow member 8 Buffer box 9 Suction machine 10 Branch pipe 11 Flexible hollow member 12 Suction hose 13 Auxiliary brush 20 Smoke duct 30 Barbecue table

Claims (5)

Has been hollow holding by a rotary shaft rotating blades therein, release the hole for feeding compressed air through the air hose at a position close to the rotary vane compressed air sent to the (suction hole) and a rear or side A box having a hole (discharge hole) for rotation, rotating in conjunction with the rotating blade, detachable brush with respect to the rotating shaft, and carrying the box on the inner side surface, the brush side is open , The space where the dirt scraped off by the brush can enter, and the compressed air discharged from the box moves to a flexible hollow member that passes through an air hose for sending compressed air to the box A buffer box connected to the hollow member, and compressed air is sent to the box having an intake hole and a discharge hole through an air hose. As a result, the rotating blade and the brush rotate in conjunction with it, and the compressed air sent into the box is discharged from the discharge hole to the buffer box and then moved to the hollow member connected to the buffer box. A duct cleaning tool, characterized by having a structure to follow. Furthermore, an air hose for feeding compressed air, which is connected to a suction hole of the box having a rotary blade inside from the air compressor through the hollow member, and the box having the rotary blade inside through the air hose; The duct cleaning tool according to claim 1, comprising an air compressor that communicates, a flexible hollow member that is connected to the buffer box and passes through the air hose, or a suction device that communicates with the buffer box via the hollow member. . Furthermore, the duct washing | cleaning tool of Claim 2 containing the flexible hollow member which is flexible and can be expanded-contracted which penetrates the said hollow member with the said air hose. The duct cleaning tool according to any one of claims 1 to 3, wherein the duct is a smoke exhaust duct or a smoke exhaust duct in a restaurant. A duct cleaning method using the duct cleaning tool according to any one of claims 1 to 4.

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