JPH08110081A - Executing method for flexible duct, function integral flexible duct used therefor and compressing jig - Google Patents

Abstract

PURPOSE: To obtain a function integral flexible duct in which the assembling work at a field site is eliminated by longitudinally compressing the duct having stretchability, heat insulation, sealability and fireproofness to mount it at a hanger, conveying to the site, then restoring it, and hanging it from a ceiling slab. CONSTITUTION: A flexible duct 1 has a cylindrical stretchable layer 2, a fibrous cylindrical heat insulation layer 4, a cylindrical synthetic resin layer 5 and a metal film layer 6, and is a straight tube in which the original length is the same length as a duct route to be installed at the field site. A hanger 7 is mounted around the duct 1, and the duct 1 is evacuated by a vacuum pump by a compression jig to compress it to 1/3 of the original length. Then, it is packaged, loaded in a truck, and conveyed to the site. Thereafter, when it is unpacked, the duct 1 of the compressed state is automatically restored to the original length by the elastic force of the layer 2. It is then hung at a ceiling slab via the hanger 7 to form a duct route.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a flexible duct at a construction site, a function-integrated flexible duct used therefor, and a compression jig.

[0002]

2. Description of the Related Art Generally, in building equipment, a main duct path or a branch duct path that joins or branches to the main duct path is used for guiding air to a predetermined place during air conditioning and ventilation. For example, an iron plate spiral duct is used for the branch duct path. The iron plate spiral duct is manufactured by winding a strip-shaped zinc iron plate in a coil spring shape.

In order to construct a branch duct path having a predetermined length by installing an iron plate spiral duct at a construction site, the following series of steps are required. The series of steps is (1) a manufacturing step of manufacturing a steel plate spiral duct configured as a straight pipe with a predetermined pipe diameter in a workplace,
(2) Loading process of multiple iron plate spiral ducts on the truck at the work place, (3) Transportation process of transporting the multiple iron plate spiral ducts from the work place to the construction site by the truck, (4) At the construction site Unloading process of multiple iron plate spiral ducts from trucks, (5) Small transport process of iron plate spiral ducts in a building site, (6) Iron plate according to the length and shape of branch duct route in building site Dimensioning and cutting process of spiral ducts made of steel, (7) Installation process of fittings and suspension bands for multiple spiral ducts made of iron plates, (8) Connection for suspending multiple spiral ducts made of iron plates to form a branch duct path Process, (9)
The process consists of covering the surface of the iron plate spiral duct with a heat insulating material such as glass wool or tape. In addition,
The above heat insulation material coating step is necessary to cover the outer periphery of the iron plate spiral duct with the heat insulation material because the heat of the air passing through the inside is easily transmitted to the outside only by connecting the plurality of iron plate spiral ducts. To be done.

However, looking at the process from the work place to the construction site until the above-mentioned installation work of the iron plate spiral duct is carried out at the construction site to form a branch duct path of a predetermined length, the following problems are encountered. There is.

(3) In the transportation process, in order to correspond to a branch duct path (for example, 12 m) of a predetermined length to be installed at a construction site, a plurality of iron plate spiral ducts (length 4 m × 3) It is necessary to transport the book) to the construction site. Therefore, the iron plate spiral duct occupies the volume corresponding to the branch duct path, the volume of the iron plate spiral duct increases, and the transportation cost is high.

In the (2) loading process, (4) unloading process and (5) small transporting process, since the volume of the spiral duct made of iron plate increases, there is a risk that the load collapses when stacked in multiple stages. However, even in the case of small transportation, it is not possible to use a transportation container such as a container, and it depends on manpower. In addition, a large number of areas are required to collect the iron plate spiral ducts.

[0007]: Each of the spiral ducts made of iron plate is dimensioned and cut in accordance with the space of the construction site so as to match the length and shape of the branch duct path to be installed, and cut. In addition, it takes a lot of time to match the site in the installation process, and it occupies the site space, which is an obstacle to other work at the construction site. Further, the scrap material of the iron plate spiral duct after cutting the iron plate spiral duct of a required length and performing on-site alignment becomes waste and becomes waste.

[0008] The iron plate spiral duct arranged as the branch duct path needs to be covered with a heat insulating material, and the heat insulating material, tape, etc. are aligned and cut on the iron plate spiral duct at the site to cut the heat insulating material. Pieces of tape, etc. are generated and waste is created.

Further, the branch duct path requires a predetermined length. The length of the iron plate spiral duct made of a straight pipe made in the workplace is limited due to the length limitation in transportation, and a plurality of iron plate spiral ducts are required to form a predetermined branch duct path. Therefore, many joints for connecting the iron plate spiral ducts are required, and there is a problem that the connecting work is required.

(9) In the heat insulation material coating step,
A thermal insulation material is wound around a plurality of spiral ducts made of iron plates to form a coated end material, and the coated end material becomes waste and is wasted.

Since the iron plate spiral duct uses a zinc iron plate as a material, (8) when working in the connecting step, the large and bulky iron plate spiral duct is heavy for an operator to lift by hand and work. There is a problem that it is difficult to hang.

As described above, since the branch duct path having a predetermined length is formed by connecting the plurality of iron plate spiral ducts through the joint, the plurality of iron plate spirals are formed from the work site to the construction site. A duct connecting step and a heat insulating material covering step are required, and there are problems associated therewith.

Further, as a method of constructing a flexible duct at the construction site, which omits the work of connecting the above-mentioned iron plate spiral duct, for example, a method disclosed in Japanese Patent Publication No. 5-44577 is known.

FIG. 29 shows a method of constructing a duct path according to Japanese Patent Publication No. 5-44577. In the figure, a duct 101 includes a frame member 102, an outer cover member 103,
The core tube 104.

The frame member 102 is assembled in a cubic shape and connected in a long gabion shape. The skin material 103 is a protective material such as a curing net, and is attached to the four peripheral surfaces of the frame material 102. The core tube 104 is a long tube, and is a flexible film tube having airtightness and incombustibility used for an air dome or the like.

During storage, the frame member 102 of the duct 101 is shortened in a bellows shape, and is stretched to a fixed length during construction. Frame material 1
A predetermined number of 02 are connected, an outer skin material 103 is attached to the four peripheral surfaces, and a core tube 104 of a predetermined length is inserted into an outer shell in which the outer skin material 103 is attached to the frame material 102.

The outer skin material 103 and the core tube 104
An incombustible material can be used for the.

[0018]

Problems to be solved by the Invention
In the method of constructing a flexible duct according to Japanese Patent No. 44577, the frame member 102 of the duct 101 is shortened in a bellows shape and is stretched to a fixed length during construction. Therefore, the above-mentioned joint for connecting the iron plate spiral duct is unnecessary. However, there are the following problems.

Generally, flexible ducts installed at construction sites are required to have various functions such as elasticity, strength, heat insulation, sealing properties, and fire protection. Further, when a flexible duct is installed at a construction site, it is required to eliminate the assembly work for adding a function to the flexible duct and shorten the process.

However, in the above flexible duct construction method, a predetermined number of frame members 102 are connected, and the outer cover member 103 is attached to the four peripheral surfaces thereof, and then the outer cover member 103 is attached to the frame member 102.
In order for the core tube 104 of a predetermined length to be inserted into the outer shell to which is attached, it is necessary to carry the outer shell and the core tube 104 to the work site and assemble them. That is, the necessary functions of the duct 101 are not integrated. Therefore, assembly work is required at the construction site.

Further, the duct 101 has a core tube 104 of a predetermined length in an outer shell in which an outer skin material 103 is attached to a frame material 102.
Since it is made by inserting a heat insulating material, if there is no heat insulating property, and if you try to add a function to the heat insulating material to the duct 101, you can align the heat insulating material, tape, etc. to the duct 101 at the site as well as the iron plate spiral duct. Pieces of heat insulating material, tape, etc. generated by cutting will be generated, and waste will be generated. Then, as a duct material used for the main duct path and the branch duct path, the actual fairness is 4-48.
The one shown in Japanese Patent No. 429 is known. The duct material disclosed in this publication is composed of a single glass fiber cloth layer, a steel wire with an adhesive which is spirally wound around the outer circumference thereof, a sound absorbing material layer which is wound around the outer circumference thereof, and a synthetic material which is fitted on the outer circumference thereof. And a resin coating layer.

However, in the duct material disclosed in Japanese Utility Model Publication No. 4-48429, since the sound absorbing material layer is wound around the outside of the steel wire with the adhesive in advance, the sound absorbing material layer is thermally insulated. It fulfills its function and the construction process of covering the surface of the iron plate spiral duct with a heat insulating material is not necessary. However, after the construction work of this duct is performed, if the construction with welding or other fire is carried out, Since the outermost layer of the duct material is composed of the synthetic resin coating layer, damage may occur due to welding sparks and the like, and the duct material may be forced to be repaired.

Alternatively, a flexible duct with glass wool may be used to connect the branch duct route to the main duct route. Although the flexible duct with glass wool is light and has good workability, its outer material is weak and the length during manufacturing is limited, so that it is generally limited to use as a connecting short pipe. Is.

By the way, as a flexible duct with glass wool, the one shown in Japanese Utility Model Laid-Open No. 4-136445 is known as shown in FIG. In the figure, the flexible duct 20 with glass wool shown in this publication
Reference numeral 1 denotes a core material 202 formed by winding a metal wire rod in a coil shape, an inner surface sheet 203 made of a non-woven fabric, a glass wool 204, and an outer surface sheet 205 made of polyvinyl chloride, which are wound in order to form a cylindrical shape. Is fixed to the inner surface sheet 203 with an adhesive.

In order to solve the problems in the method of constructing a flexible duct according to Japanese Patent Publication No. 44577/1993 (which requires assembly work at a construction site and lack of heat insulation), the glass wool having such a structure is used. It is also conceivable to put the attached flexible duct 201 in a compressed state in a work place in advance and extend it at a construction site. in this case,
Since the core material 202 is fixed to the inner surface sheet 203 with an adhesive, the core material 202 deforms when compressed, so that the core material 202 and the inner surface sheet 203 may be separated from each other. Therefore, the flexible duct 201 with glass wool is not configured to expand and contract.

Further, after the construction work of the flexible duct 201 with glass wool is carried out and the construction with fire is carried out such as welding, the outermost sheet of the flexible duct 201 with glass wool is an outer sheet made of polyvinyl chloride. Since it is composed of 205, there is a case where damage is caused by a spark of welding or the like and the duct material is forced to be repaired.

The present invention has been made to solve the above-mentioned problems, and an object thereof is to eliminate assembly work for securing various functions at a construction site when installing a duct route at the construction site. By providing a flexible duct construction method that can be performed, and also by providing a function-integrated flexible duct having elasticity, thermal insulation, sealability, and fire protection, and further by providing a compression jig for the function-integrated flexible duct. is there.

[0028]

According to the first aspect of the present invention,
A function-integrated flexible duct having elasticity, heat insulation, sealing properties, and fire protection is compressed in advance in the longitudinal direction at the work place, and a hanger is attached to the function-integrated flexible duct to provide a plurality of compressed function-integrated types. The flexible duct is transported from the work site to the construction site, a plurality of compressed function-integrated flexible ducts are restored, and the restored function-integrated flexible ducts are hung on the ceiling slab via a suspender. .

According to a second aspect of the present invention, in the flexible duct construction method according to the first aspect, the function-integrated flexible duct is accommodated in the transport container in a compressed state with its length dimension or less. And

The invention according to claim 3 is used in the method for constructing a flexible duct according to claim 1, wherein a cylindrical elastic layer having a coil spring-shaped steel wire and an outer periphery of the cylindrical elastic layer are provided. A coated fibrous cylindrical heat insulating layer,
It is characterized by having a cylindrical synthetic resin layer coated on the outer periphery of the cylindrical heat insulating layer and a metal film layer coated on the outer periphery of the cylindrical synthetic resin layer.

According to a fourth aspect of the present invention, in the function-integrated flexible duct according to the third aspect, the cylindrical expansion / contraction layer has a strip-shaped non-woven fabric having locking portions formed on both side portions, respectively. The non-woven fabric is overlapped with the steel wire in a coil spring shape, and the steel wire is sandwiched between the overlapping portions of the locking portions on the overlapping sides of the overlapped strip-shaped non-woven fabric.

According to a fifth aspect of the present invention, there is provided a compression jig used in the method for constructing a flexible duct according to the first aspect, wherein the function-integrated flexible duct is attached to the bottom portion at one end thereof. A bottomed cylindrical receiver that is housed in contact with each other, a suction pipe having one end connected to the bottom of the bottomed cylindrical receiver, a vacuum pump connected to the other end of the suction pipe, and a function-integrated flexible duct. It is characterized by comprising a cap member which abuts on the other end and is slidable in the bottomed cylindrical receiver.

According to a sixth aspect of the present invention, there is provided a compression jig used in the method for constructing a flexible duct according to the first aspect, which comprises a regulating plate for suppressing one end of the function-integrated flexible duct, and the regulating plate. It is characterized in that it is composed of a shaft that penetrates through the function-integrated flexible duct and a pressing plate that is reciprocally supported by the shaft.

According to a seventh aspect of the present invention, there is provided a compression jig used in the flexible duct construction method according to the first aspect, wherein the length dimension is smaller than the length dimension of the function-integrated flexible duct. A bottomed cylindrical receiver that accommodates the integrated flexible duct with one end of the function-integrated flexible duct in contact with the bottom, and the other end of the function-integrated flexible duct outside the bottomed cylindrical receiver. It is characterized by comprising a pressing bag which is covered and covered.

The invention according to claim 8 is a compression jig used in the method for constructing a flexible duct according to claim 1, wherein the length dimension is smaller than the length dimension of the function-integrated flexible duct. A bottomed cylindrical receiver that accommodates the integrated flexible duct in a state where one end of the function-integrated flexible duct is in contact with the bottom, a side surface portion that is slidable on the inner wall surface of the bottomed cylindrical receiver, and a side surface. It is characterized in that it is constituted by a cylindrical pressing tool having a lid member covering the other end of the function-integrated flexible duct integrally with the portion.

A ninth aspect of the present invention is a compression jig used in the method for constructing a flexible duct according to the first aspect, wherein the compression jig accommodates the function-integrated flexible duct and has one end closed. And a slider reciprocating in the rail jig by contacting the other end of the function-integrated flexible duct.

A tenth aspect of the present invention is a compression jig used in the method for constructing a flexible duct according to the first aspect, wherein a compression plate for suppressing one end of the function-integrated flexible duct and a regulation plate are set. An elastic bellows member that surrounds the outer periphery of the function-integrated flexible duct, and a cover plate that is rotatably provided on the elastic bellows member and presses the other end of the function-integrated flexible duct.

The invention according to claim 11 is a compression jig used in the method for constructing a flexible duct according to claim 1, comprising a fixed lid plate for closing one end of the function-integrated flexible duct, and a function-integrated flexible A movable lid plate that closes the other end of the duct, a suction pipe whose one end is connected to a hole of the fixed lid plate, a suction device that is connected to the other end of the suction pipe, and a suction pipe connected in parallel to the function-integrated flexible duct. With a screw rod,
It is characterized by comprising a screw receiving member which moves on the screw rod and is connected to the movable lid plate, and a drive means for rotating the screw rod.

According to a twelfth aspect of the present invention, there is provided a compression jig used in the method for constructing a flexible duct according to the first aspect, which is a vertically-bottomed bottomed cylindrical receptacle that accommodates a function-integrated flexible duct. , And a weight to be placed on the upper end of the function-integrated flexible duct in the bottomed cylindrical receiver.

A thirteenth aspect of the present invention is a compression jig used in the method for constructing a flexible duct according to the first aspect, wherein a cylindrical receiver for accommodating the function-integrated flexible duct and one end of the cylindrical receiver are provided. A lid plate that is rotatably provided,
It is characterized in that it is provided with a pressing plate which is reciprocally provided at the other end of the cylindrical receiving member and presses the function-integrated flexible duct onto the cover plate, and a cylinder connected to the pressing plate.

A fourteenth aspect of the present invention is a compression jig used in the method for constructing a flexible duct according to the first aspect, in which a plurality of horizontally mounted jigs penetrate through the function-integrated flexible duct. Round bar, a fixed plate fixed to one end of the round bar, a slider that is movably provided on the plurality of round bars, and a slider that connects each round bar, and a reciprocally provided on the plurality of round bars. And a cylinder connected to the pressing plate.

According to a fifteenth aspect of the present invention, there is provided a compression jig used in the method for constructing a flexible duct according to the first aspect, wherein the compression jig penetrates through the function-integrated flexible duct and is predetermined with the function-integrated flexible duct. And a fixed lid plate that closes one end of the function-integrated flexible duct, and a reciprocally provided on the cylindrical body,
It is characterized in that it is provided with a quadrangular moving pressing plate that presses the other end of the function-integrated flexible duct, and a plurality of cylinders that are respectively connected to respective corners of the moving pressing plate.

According to a sixteenth aspect of the present invention, there is provided a compression jig used in the method for constructing a flexible duct according to the first aspect, wherein a function-integrated flexible duct is applied to the bottom portion at one end thereof. A bottomed cylindrical receiver that also serves as a container that is housed in contact with each other, a suction pipe that has one end connected to the bottom of the bottomed cylindrical container that also serves as a container, and a suction device that is connected to the other end of the suction pipe. The compression jig for a flexible duct construction method according to claim 1, wherein the compression jig is constructed by a cap member which is in contact with the other end of the body type flexible duct and can reciprocate in the bottomed cylindrical receiver that also serves as a container.

According to a seventeenth aspect of the present invention, there is provided a compression jig used in the method for constructing a flexible duct according to the first aspect, wherein the function-integrated flexible duct is applied to a bottom portion at one end thereof. A bottomed cylindrical receptacle that also serves as a container and is housed in contact with each other, a positioning hole formed at a predetermined interval on the side wall of the bottomed cylindrical receptacle that also serves as a container, and can be freely inserted or removed through the function-integrated flexible duct. It is characterized by comprising a screw shaft, a pressing plate screwed onto the screw shaft, and a positioning pin inserted into a positioning hole of a bottomed cylindrical receptacle that also serves as a container.

[0045]

According to the invention of claim 1, the function-integrated flexible duct having stretchability, heat insulation, sealability, and fireproofness is preliminarily compressed in the longitudinal direction at the work place and becomes a function-integrated flexible duct. The function-integrated flexible duct that is attached with the hanger is transported from the work site to the construction site, the function-integrated flexible duct in the compressed state is restored, and the restored function-integrated flexible duct is passed through the hanger. Suspended on a ceiling slab.

According to the second aspect of the present invention, when the function-integrated flexible duct is compressed, the volume of the function-integrated flexible duct is not increased during transportation, and the function-integrated flexible duct is compressed in a transportation container such as a truck or an elevator. The body-shaped flexible duct is transported. Further, the object of transportation can be one type, and the management can be facilitated.

According to the third aspect of the present invention, since the function-integrated flexible duct has the cylindrical expansion / contraction layer having the coil spring-shaped steel wire as a constituent element, the strength of the steel wire can be obtained over the entire length. The shape retention is ensured without bending when the function-integrated flexible duct is suspended.

Since the function-integrated flexible duct has the cylindrical heat insulating layer, the heat insulating property is secured. Thereby, the temperature of the conditioned air can be maintained. Since the function-integrated flexible duct has the cylindrical synthetic resin layer, the sealing property is secured. Thereby, for example, leakage of conditioned air can be prevented.

Since the function-integrated flexible duct is protected by the metal film layer, it has a fireproof property on the outer surface and protects the outer surface against the sparks such as sparks generated during welding work.

In addition, the function-integrated flexible duct does not use a conventional zinc-iron plate as a material, but when viewed as a whole, the specific gravity can be reduced and the weight can be lightened, and the work at the time of suspending work becomes easy.

Further, since the cylindrical expansion / contraction layer, the cylindrical heat insulating layer, the cylindrical synthetic resin layer, and the metal film layer, which are the materials of the function-integrated flexible duct, have flexibility, respectively, the duct with a gentle bend. A bending deformation is performed along the route.

Further, since the function-integrated flexible duct has a circular cross section, the strength is large and the duct space in the building is small. And further,
Since the function-integrated flexible duct is constructed by laminating a cylindrical expansion / contraction layer, a cylindrical heat insulating layer, a cylindrical synthetic resin layer, and a metal film layer, it is compact without requiring a wasted space. .

In the fourth aspect of the present invention, when the function-integrated flexible duct is expanded and contracted, the steel wire expands and contracts. The expansion and contraction of the steel wire causes the engaging portion to move in the longitudinal direction, thereby expanding and contracting the nonwoven fabric. Is possible.

In the fifth aspect of the invention, the air in the function-integrated flexible duct is sucked by the vacuum pump from the bottom of the bottomed cylindrical receiver, and the inside of the function-integrated flexible duct becomes negative pressure and compressed. .

In the sixth aspect of the invention, the function-integrated flexible duct is compressed by the pressing plate sliding on the shaft pressing the other end of the function-integrated flexible duct.

According to the seventh aspect of the present invention, the pressing bag is covered by covering the other end of the function-integrated flexible duct, and the pressing bag is pulled in this state to compress the function-integrated flexible duct.

According to the eighth aspect of the invention, when the function-integrated flexible duct is housed in the bottomed cylindrical receiver, one end of the function-integrated flexible duct abuts the bottom of the bottomed cylindrical receiver. ing. The other end of the function-integrated flexible duct is pushed by the lid member of the cylindrical pressing tool, and the function-integrated flexible duct is compressed.

According to a ninth aspect of the present invention, one end of the function-integrated flexible duct is brought into contact with one end of the rail jig, and the other end of the function-integrated flexible duct is pressed by the slider. The flexible duct is compressed.

According to the tenth aspect of the invention, by pressing the lid plate, the elastic bellows member is compressed, and at the same time, the function-integrated flexible duct is compressed. In the invention according to claim 11, the inside of the function-integrated flexible duct is made negative by the suction device. In this state, the movable lid plate moves on the screw rod by operating the driving means, and the movable duct plate is compressed by the movement of the movable lid plate.

According to the twelfth aspect of the invention, the function-integrated flexible duct is compressed by the weight. Claim 1
In the invention described in 3, the lid plate is rotated to open one end of the cylindrical receiver, and the function-integrated flexible duct is inserted from one end of the cylindrical receiver. Then, the lid plate is rotated to close one end of the cylindrical receiver. When the function-integrated flexible duct is pressed by the pressing plate in that state, the function-integrated flexible duct is compressed.

In the fourteenth aspect of the present invention, the function-integrated flexible duct is inserted on the plurality of round bars,
Subsequently, the pressing plate is set on the round bar. In that state,
When the function-integrated flexible duct is pushed by the pressing plate, the function-integrated flexible duct is compressed.

According to a fifteenth aspect of the present invention, the function-integrated flexible duct is inserted into the cylindrical body, and subsequently,
The moving pressing plate is set on the cylindrical body. In that state, when the function pressing type flexible duct is pushed by the moving pressing plate, the function pressing type flexible duct is compressed.

In the sixteenth aspect of the present invention, air in the function-integrated flexible duct is evacuated by the suction device from the bottom of the bottomed cylindrical receptacle that also serves as a container, and the pressure in the function-integrated flexible duct is made negative. The function-integrated flexible duct is compressed.

According to the seventeenth aspect of the present invention, one end of the function-integrated flexible duct abuts the bottom of the bottomed cylindrical receiver, and the other end of the function-integrated flexible duct is pressed by rotating the screw shaft. Pressed by the plate, the function-integrated flexible duct is compressed.

[0065]

Embodiments of the present invention will be described below with reference to the drawings. Claims 1, 2, 3, according to FIGS.
Examples of the invention described in 4 and 5 will be described.

FIG. 1 shows a series of steps from the function-integrated flexible duct (FIGS. 2 to 4) being transported from a work site (factory) to a construction site and suspended on a ceiling slab to form a branch duct route according to a predetermined work process. The process of is shown.

First, the structure of the function-integrated flexible duct will be described with reference to FIGS. In the figure, reference numeral 1 indicates a function-integrated flexible duct, which includes a cylindrical expansion / contraction layer 2, a fibrous cylindrical heat insulating layer 4, a cylindrical synthetic resin layer 5, and a metal film. It has a layer 6 and its original length is the same length as the duct path to be installed at the construction site and is constructed as a straight pipe.

The cylindrical elastic layer 2 has a diameter of 1.0 mm to 1.6.
Coil spring-shaped galvanized steel wire 2 mm
And nylon nonwoven fabric 3, both ends of which are open. The nylon non-woven fabric 3 holds the galvanized steel wire 2A. That is, the nylon non-woven fabric 3 is formed in a strip shape by forming locking portions 3A and 3B having circular cross-sections on both sides, and the nylon non-woven fabric 3 is wound together with the galvanized steel wire 2A, and the nylon non-woven fabric 3 is superposed. The galvanized steel wire 2A is sandwiched between the overlapping portions 3C of the locking portions 3A and 3B formed as described above. Therefore, when the function-integrated flexible duct 1 expands and contracts, the galvanized steel wire 2A expands and contracts, but the expansion and contraction of the galvanized steel wire 2A causes the locking portion 3 to expand and contract.
Nylon nonwoven fabric 3
It is possible to expand and contract. This gives an excellent function to the conventional example in which the stretchability cannot be secured because the non-woven fabric is fixed to the steel wire with an adhesive.

The cylindrical heat insulation layer 4 is coated on the outer periphery of the cylindrical expansion / contraction layer 2, and for example, glass wool is used as the material, the density thereof is 24 kg / m ³ , and the thickness thereof is 25 mm.
It has been.

The cylindrical synthetic resin layer 5 is coated on the outer periphery of the cylindrical heat insulating layer 4 and is made of, for example, a vinyl chloride film as a material, so that the conditioned air can be prevented from leaking. The metal film layer 6 is coated on the outer periphery of the cylindrical synthetic resin layer 5 and is made of a laminate sheet made of aluminum and polyester.

The function-integrated flexible duct 1 having the above-described structure is of various types having a diameter in the range of 100 mm to 500 mm, and the length thereof is in the range of 24 m, and any length is within that range. Will be processed. Also,
The weight of the function-integrated flexible duct 1 is 1/3 that of the conventional iron plate spiral duct.

According to the function-integrated flexible duct 1 having the above-described structure, the following effects are obtained. (1) Since the cylindrical expansion / contraction layer 2 having the coil spring-shaped galvanized steel wire 2A is used as a constituent element, the strength of the galvanized steel wire 2A can be obtained over the entire length,
When the function-integrated flexible duct 1 is suspended, the shape can be maintained without causing any bending. (2) Since the function-integrated flexible duct 1 has the cylindrical heat insulation layer 4, heat insulation can be ensured. Thereby, the temperature of the conditioned air can be maintained. (3) Since the function-integrated flexible duct 1 has the cylindrical synthetic resin layer 5, the sealing performance can be secured. Thereby, for example, leakage of conditioned air can be prevented. (4) Since the function-integrated flexible duct 1 is protected by the metal film layer 6, it has fireproofness on the outer surface and can protect the outer surface against the sparks such as sparks generated during welding work. . (5) The function-integrated type flexible duct 1 does not use a conventional zinc-iron plate as a material, and can be made lighter by reducing the specific gravity as a whole, and the work at the time of suspending work can be facilitated. (6) Cylindrical expansion / contraction layer 2, cylindrical heat insulation layer 4, cylindrical synthetic resin layer 5, which is the material of the function-integrated flexible duct 1.
Since each of the metal film layers 6 is flexible, it can be bent along a duct path having a gentle bend. (7) Since the function-integrated flexible duct 1 has a circular cross section, it has high strength and can reduce the duct space in the building. (8) Since the function-integrated flexible duct 1 is configured by laminating the cylindrical expansion / contraction layer 2, the cylindrical heat insulating layer 4, the cylindrical synthetic resin layer 5, and the metal film layer 6, a wasteful space is required. It can be made compact without

The procedure from the work site to the construction site of the function-integrated flexible duct 1 having the above-described structure is shown in FIG. In the figure, in a step S1 of attaching a hanger to a function-integrated flexible duct, a hanger 7 including a hanger band is attached around the function-integrated flexible duct 1 in FIG.

In the compression step S2 of the function-integrated flexible duct, the function-integrated flexible duct 1 is compressed by the first compression jig 8 shown in FIG. As shown in FIG. 9, the first compression jig 8 accommodates the function-integrated flexible duct 1 with the bottom opening 8A in contact with the one-end opening 1A of the function-integrated flexible duct 1. Tool 8B, a suction tube 8C having one end connected to the bottom 8A of the bottomed cylindrical receiver 8B, a vacuum pump 8D connected to the other end of the suction tube 8C, and the other end opening 1B of the function-integrated flexible duct 1 And a cap member 8E slidable in the bottomed cylindrical receiver 8B.

Then, the first compression jig 8 sucks the air in the function-integrated flexible duct 1 from the bottom portion 8A of the bottomed cylindrical receiver 8B by the vacuum pump 8D, and the function-integrated type shown by the chain double-dashed line in FIG. The inside of the flexible duct 1 has a negative pressure, is compressed to 1/3 of the original length, and becomes a state shown by a solid line.

As shown in FIG. 10, the binding wire K is passed through the inside of the function-integrated flexible duct 1 before compression and is folded back from the inside to the outside. After the compression, the both ends of the binding wire K are united and twisted, so that the compressed function-integrated flexible duct 1 is held in the compressed state by the binding wire K.

Since the first compression jig 8 uses the vacuum pump 8D, the structure can be simplified. In the packing step S3 for packing a function-integrated flexible duct into a container, as shown in FIGS. 6 and 7, a plurality of compressed function-integrated flexible ducts 1 are housed in a transport container formed of a container 9 in a sealed state. ing. At this time, the binding line K for compressing the function-integrated flexible duct 1 is removed when it is housed in the container 9, and the function-integrated flexible duct 1 is removed without the binding line K inside the container 9. It is in a compressed state in a state of being pressed between both inner wall surfaces of the container 9. Note that the function-integrated flexible duct 1 can be stored in a compressed state in the container 9 by binding the flexible duct 1 with the binding line K.

The compressed function-integrated flexible duct 1 is accommodated in the container 9 in a compressed state with its length dimension or less. A partition plate 9A is provided inside the container 9, and the compressed function-integrated flexible ducts 1 are stacked in multiple stages. In addition, the number written in the inside of the cross section of the compressed function-integrated flexible duct 1 in the container 9 in FIG. 7 indicates the diameter dimension (unit: mm). The container 9 is configured so that a rectangular frame material can be disassembled and assembled. This is because when the container 9 is collected at the construction site, it is disassembled into a frame material, returned to the work place, and assembled at the work place to enable reuse and avoid disposal.

In the container loading step S4,
The container 9 in which the compressed function-integrated flexible duct 1 is packed is loaded on a truck (not shown) by a cargo handling machine such as a forklift. In the container transfer step S5 by the truck, the compressed function-integrated flexible duct 1 loaded on the truck is transported from the work place to the construction site. In this case, the length of the truck bed is such that the container 9 can be loaded.

Unloading process of container from truck S6
In the above, the container 9 loaded on the truck is unloaded at the construction site by a cargo handling machine such as a forklift.
In the container elevator elevator loading step S7, if the construction site is on the second floor or higher, the container 9 is transported by the elevator. In this case, the length of the elevator cage is such that the containers 9 can be loaded.

When the container 9 is unpacked in the restoration step S8 of the compressed function-integrated flexible duct, the function-integrated flexible duct 1 is placed inside the container 9 without the binding line K inside the container 9. The function-integrated flexible duct 1 in the compressed state is automatically restored to the original length by the elastic force of the cylindrical expansion / contraction layer 2 because it is stored in a compressed state by being pressed against the wall surface. The restored function-integrated flexible duct 1 has the same length as the duct path to be installed.

As shown in FIG. 8, in the step S9 of suspending the function-integrated flexible duct, the restored function-integrated flexible duct 1 is suspended on the ceiling slab T through the suspending tool 7, and the function-integrated flexible duct is suspended. A duct path is formed by the body type flexible duct 1. The duct paths are installed in series to form a branch duct path.

According to the above configuration, the following effects can be obtained. (1) The function-integrated flexible duct 1 is processed to have the same original length as the duct path to be installed at the construction site at the work site, and then restored to the original length at the construction site. It is possible to eliminate the dimensioning, cutting, and jointing of multiple iron plate spiral ducts on site. That is, if the function-integrated flexible duct 1 restored to the original length is used as it is, a duct path of a predetermined length can be secured. (2) Since the function-integrated flexible duct 1 has a heat insulating property, it is possible to eliminate the work of covering the function-integrated flexible duct 1 with a heat insulating material as in the conventional example, and the function-integrated flexible duct 1 can be used as it is. It can be used and eliminates the possibility of scraps of heat insulation material, tape, etc. generated by aligning and cutting the heat insulation material, tape, etc. as in the conventional example on the iron plate spiral duct on site, and eliminating waste. it can. (3) Since the function-integrated flexible duct 1 has fire protection, even if the function-integrated flexible duct installation work is performed in the early stage of the construction work at the construction site, the function-integrated flexible duct installation work The outer surface can be protected against the sparks of sparks such as welding generated in the post process, and the degree of freedom of construction work at a construction site can be increased. (4) The function-integrated flexible duct 1 installed on the construction site has elasticity, heat insulation, sealing properties, and fire protection, and all the functions required on the construction site are integrated, so the function-integrated type It suffices if the flexible duct 1 is simply suspended at the construction site, and no assembly work is required at the construction site in order to ensure a predetermined function. Eliminating the assembly work at the construction site. Further, the length adjustment at the construction site can be performed by appropriately shrinking the function-integrated flexible duct 1. (5) When suspending the function-integrated flexible duct 1 on the ceiling slab T at the construction site, the compressed function-integrated flexible duct 1 is restored to its original length, and the restored function-integrated flexible duct 1 is restored. Since it is possible to form the duct path by suspending on the ceiling slab T via the suspender 7, it is possible to eliminate the need for a joint for connecting a plurality of iron plate spiral ducts as in the conventional example. (6) Since the function-integrated flexible duct 1 can be placed in a compressed state, it is possible to reduce the installation area of the function-integrated flexible duct 1 in a work site or a construction site. (7) Since the suspending tool 7 is attached to the function-integrated flexible duct 1 at the work place, the work of attaching the suspending tool to the iron plate spiral duct is unnecessary at the construction site, and the work at the construction site where there are many work processes Can be moved to the work site, eliminating the concentrated work at the construction site and shortening the time at the construction site.

Further, since the function-integrated flexible duct 1 has the cylindrical expansion / contraction layer 2 having the coil spring-shaped galvanized steel wire 2A as a constituent element, the strength of the galvanized steel wire 2A can be obtained over the entire length. Therefore, when the function-integrated flexible duct 1 is suspended, the shape can be maintained without causing any bending. Therefore, the number of suspenders 7 can be reduced. (8) As described above, it is possible to omit various works when the iron plate spiral duct is installed in the construction site as in the conventional example, and it is possible to shorten the work process. (9) When the function-integrated flexible duct 1 is compressed, the volume of the function-integrated flexible duct 1 is not increased during transportation, and the function-integrated flexible duct 1 can be transported by a transportation container such as a truck or an elevator. , It is possible to reduce transportation cost by reducing loading work and unloading work at a work place or a construction site.

Further, the object to be transported can be one type, and the management can be facilitated. Further, standard-sized transport containers such as containers can be used. (10) Since the function-integrated flexible duct 1 is protected by the metal film layer 6, it has a fireproof property on the outer surface and can protect the outer surface against the fire such as sparks generated during welding work. . (11) The function-integrated flexible duct 1 does not use a conventional zinc-iron plate as a material, and while ensuring the function of an iron-plate spiral duct, it can be made lighter by reducing the specific gravity as a whole when it is suspended. You can work easily. (12) Since the cylindrical expansion / contraction layer 2, the cylindrical heat insulating layer 4, the cylindrical synthetic resin layer 5, and the metal film layer 6 which are materials of the function-integrated flexible duct 1 have flexibility, respectively, they are loose. A bending deformation can be performed along a curved duct path.

FIG. 11 shows a second compression jig to which the invention according to claim 6 is applied. In the figure, the second compression jig 11 is
A restriction plate 12 that suppresses the one end opening 1A of the function-integrated flexible duct 1, and a shaft 13 that penetrates through the function-integrated flexible duct 1 set in the restriction plate 12.
The pressure plate 14 is reciprocally supported by the shaft 13.

The pressing plate 14 sliding on the shaft 13 is provided with the other end opening 1B of the function-integrated flexible duct 1.
By pressing, the function-integrated flexible duct 1 is compressed. Like the first compression jig 8, both ends of the compressed function-integrated flexible duct 1 are held in a compressed state by the binding wire K.

According to the second compression jig 11, the pressing plate 14 is reciprocally supported by the shaft 13, so that the structure can be simplified. FIG. 12 shows a third compression jig to which the invention according to claim 7 is applied. In the figure, the third compression jig 15
Is composed of a bottomed cylindrical receiver 16 and a pressing bag 17. The bottomed cylindrical receiver 16 has a length dimension smaller than that of the function-integrated flexible duct 1, and the function-integrated flexible duct 1 is attached to the bottom portion 16A at one end opening 1A of the function-integrated flexible duct 1. Store in contact with each other. The pressing bag 17 is provided on the outside of the bottomed cylindrical receiver 16.
The function-integrated flexible duct 1 is covered so as to cover the other end opening 1B.

When the pressing bag 17 is pulled, the function-integrated flexible duct 1 is compressed. Like the first compression jig 8, both ends of the compressed function-integrated flexible duct 1 are held in a compressed state by the binding wire K.

According to the third compression jig 15, since the function-integrated flexible duct 1 is compressed by pulling the pressing bag 17, no mechanical equipment is required. FIG. 13 shows a fourth compression jig to which the invention according to claim 8 is applied. In the figure, the fourth compression jig 18 is composed of a bottomed cylindrical receiving member 19 and a cylindrical pressing member 20.

The bottomed cylindrical receiver 19 has a length smaller than that of the function-integrated flexible duct 1.
The function-integrated flexible duct 1 is housed in a state where the one end opening 1A of the function-integrated flexible duct 1 is in contact with the bottom portion 19A.

The cylindrical pressing tool 20 has a side wall 21 on the inner wall surface 19B of the bottomed cylindrical wall support 19, which is in close contact with the inner wall surface 19B and is slidable, and a flexible duct 1 having a function integrated with the side wall 21. 2 which is covered so as to cover the other end opening 1B of the
And 2.

The function-integrated flexible duct 1
In the state in which is stored in the bottomed cylindrical receiver 19, the one end opening 1A of the function-integrated flexible duct 1 is in contact with the bottom portion 19A of the bottomed cylindrical receiver 19. The other end opening 1B of the function-integrated flexible duct 1 has a lid member 22 for the cylindrical pressing member 20.
The flexible duct 1 with a function is compressed by pressing with. Like the first compression jig 8, both ends of the compressed function-integrated flexible duct 1 are held in a compressed state by the binding wire K.

According to the fourth compression jig 18, the cylindrical pressing member 20
Since the function-integrated flexible duct 1 can be compressed while the function-integrated flexible duct 1 is positioned and held therein, the work of compressing the function-integrated flexible duct 1 can be facilitated.

FIG. 14 shows a fifth compression jig to which the invention according to claim 9 is applied. In the figure, the fifth compression jig 23 is
A rail jig 24 having an inverted cross-section, which houses the function-integrated flexible duct 1 and has one end 24A closed.
The slider 25 is slidable in the rail jig 24 by contacting the other end opening 1B of the function-integrated flexible duct 1.

The function-integrated flexible duct 1
The one-end opening 1A of the rail abuts on one end 24A of the rail jig 24, and the other-end opening 1B of the function-integrated flexible duct 1 is pressed by the slider 25, whereby the function-integrated flexible duct 1 is compressed. Like the first compression jig 8, both ends of the compressed function-integrated flexible duct 1 are held in a compressed state by the binding wire K.

According to the fifth compression jig 23, since the function-integrated flexible duct 1 is compressed while being regulated by the rail jig 24, the compression work can be facilitated. Further, since the rail jig has an inverted gate-shaped cross section, the function-integrated flexible duct 1 can be set horizontally in the rail jig, and the setting work can be facilitated.

FIG. 15 shows a sixth compression jig to which the invention according to claim 10 is applied. In the figure, the sixth compression jig 26
Is a regulation plate 27 that suppresses the one end opening 1A of the function-integrated flexible duct 1 and an elastic bellows member 2 that surrounds the outer periphery of the function-integrated flexible duct 1 set in the regulation plate 27.
8 and a lid plate 29 that is rotatably provided on the elastic bellows member 28 and presses the other end opening 1B of the function-integrated flexible duct 1. By inserting a pin 29A into the lid plate 29, 29A is engaged with the pin receiving portion 28A provided on the upper end of the elastic bellows member 28, and the cover plate 29 is fixed to the elastic bellows member 28.

Then, by pressing the cover plate 29,
At the same time as the elastic bellows member 28 is compressed, the function-integrated flexible duct 1 is compressed. The first compression jig 8
Similar to the compressed function-integrated flexible duct 1
Both ends of the are held in a compressed state by a binding wire K.

According to the sixth compression jig 26, the elastic bellows member 28 has a function of restricting the flexure of the function-integrated flexible duct 1 when the function-integrated flexible duct 1 is compressed by the cover plate 29. Therefore, a member for restricting the flexure of the function-integrated flexible duct 1 is not required, and the function-integrated flexible duct 1 can be compressed while restricting the flexure only by the elastic bellows member 28.

FIG. 16 shows a seventh compression jig to which the invention according to claim 11 is applied. In the figure, the seventh compression jig 30
Is a base 31 and a fixed lid plate 32 fixed to the base 31 and closing the one end opening 1A of the function-integrated flexible duct 1.
And a movable lid plate 33 that is reciprocally provided on the base 31 and closes the other end opening 1B of the function-integrated flexible duct 1.
A suction pipe 34A having one end 34B connected to the hole 32A of the fixed lid plate 32, a suction device 34 connected to the other end 34C of the suction pipe 34, and a flexible duct 1 integrated with the base 31 and attached to the base 31. Screw bar 35 arranged in parallel to
And a screw receiving member 36 that moves on the screw rod 35 and is connected to the movable cover plate 33, and a drive unit 37 that is a rotating handle that rotates the screw rod 35.

Then, the inside of the function-integrated flexible duct 1 is made negative pressure by the suction device 34. In this state, when the screw rod 35 is rotated by operating the driving means 37, the movable cover plate 33 moves on the screw rod 35, and the movable cover plate 33 moves to compress the lexible duct 1. Like the first compression jig 8, both ends of the compressed function-integrated flexible duct 1 are held in a compressed state by the binding wire K.

According to the seventh compression jig 30, the suction device 34
Since the inside of the function-integrated flexible duct 1 is placed in a negative pressure state and the screw rod 35 is rotated by the driving means 37, the function-integrated flexible duct 1 can be easily compressed. Moreover, the compression amount of the function-integrated flexible duct 1 can be easily adjusted.

FIG. 17 shows an eighth compression jig to which the invention according to claim 12 is applied. In the figure, the eighth compression jig 38
Is a bottomed cylindrical receiver 39 that accommodates the function-integrated flexible duct 1 and is vertically movable, and a disc-shaped weight 4 that is placed on the upper end of the function-integrated flexible duct 1 in the bottomed cylindrical receiver 39.
It is composed of 0 and.

At first, the eighth compression jig 38 is placed in a horizontal state, the function-integrated flexible duct 1 is inserted into the bottomed cylindrical receiver 39, and the one-end opening 1A of the function-integrated flexible duct 1 is Bottom 39 of bottomed cylindrical receiver 39
Contact A. The disc-shaped weight 40 is put into the bottomed cylindrical receiver 39, and the disc-shaped weight 40 contacts the other end opening 1B of the function-integrated flexible duct 1. When one end of the bottomed cylindrical receiver 39 is lifted by the rope 41, the bottomed cylindrical receiver 39 is closed.
Are erected vertically, and the disc-shaped weight 40 compresses the function-integrated flexible duct 1. Like the first compression jig 8, both ends of the compressed function-integrated flexible duct 1 are held in a compressed state by the binding wire K.

Further, although the bottomed cylindrical receiver 39 is vertically erected by the rope 41, it is not limited to such means, and one end of the bottomed cylindrical receiver 39 may be lifted vertically by the operator.

According to the eighth compression jig 38, the disc-shaped weight 4
Since the function-integrated flexible duct 1 can be compressed at 0, the structure can be simplified. 18 to 20 show a ninth compression jig to which the invention according to claim 13 is applied.

In FIG. 18, the ninth compression jig 42 is a cylindrical holder 43 for accommodating the function-integrated flexible duct 1.
And a lid plate 4 rotatably provided at one end of the cylindrical receiving member 43.
4, a pressing plate 45 reciprocally provided on the other end of the cylindrical receiving member 43 to press the function-integrated flexible duct 1 on the cover plate 44, and a cylinder 46 composed of a hydraulic cylinder connected to the pressing plate 45. It is equipped with and is installed horizontally.

Then, the lid plate 44 is pivoted downward to open one end of the cylindrical receiving member 43, and the function-integrated flexible duct 1 is inserted from one end of the cylindrical receiving member 43.
Is rotated to close one end of the cylindrical receiver 43. When the function-integrated flexible duct 1 is pushed by the pressing plate 45 in that state, the function-integrated flexible duct 1 is compressed.
Note that, as with the first compression jig 8, as shown in FIG.
Both ends of the compressed function-integrated flexible duct 1 are held in a compressed state by binding wires K. Then, as shown in FIG. 20, the lid plate 44 is rotated downward, and the compressed function-integrated flexible duct 1 is taken out from the cylindrical receiver 43.

According to the ninth compression jig 42, the cylinder 46 serves as a drive source for compression of the function-integrated flexible duct 1.
Since it uses, the flexible duct with integrated function 1
It is possible to reliably control the compression amount of.

21 and 22 show a tenth compression jig to which the invention according to claim 14 is applied. In the figure, a tenth compression jig 47 is fixed to one end of the round bar 48 and a plurality of round bars 48 (four in the drawing) that are horizontally placed and penetrate through the function-integrated flexible duct 1. Fixed plate 49, and
Each round bar 48 is movably provided on a plurality of round bars 48.
Is provided with a slider 50 that connects to each other, a pressing plate 51 that is reciprocally provided on a plurality of round bars 48, and a cylinder 52 that is a hydraulic cylinder connected to the pressing plate 51.
The slider 50 includes a cross-shaped bracket 50A and a plurality of collars 50 provided at the tip of the cross-shaped bracket 50A.
A round bar 48 penetrates each collar 50B. Further, the upper round bar 48 is suspended by a hook 54 attached to the rope 53, and a plurality of round bars 48 are horizontally held.

Then, the function-integrated flexible duct 1 is inserted on the plurality of round bars 48, and the pressing plate 51 is attached to the round bars 4.
8 is set. When the function-integrated flexible duct 1 is pushed by the pressing plate 51 in that state, the function-integrated flexible duct 1 is compressed. Like the first compression jig 8, both ends of the compressed function-integrated flexible duct 1 are held in a compressed state by the binding wire K.

According to the tenth compression jig 47, since the cylinder is used as a drive source for the compression of the function-integrated flexible duct 1, it is possible to reliably control the compression amount of the function-integrated flexible duct 1.

Further, the function-integrated flexible duct 1 to be bent can be supported by the round bar 48, and the function-integrated flexible duct 1 can be surely prevented from bending when compressed. 23 and 24 show the eleventh embodiment to which the invention of claim 15 is applied.
A compression jig is shown. In the figure, the eleventh compression jig 55 is
A cylindrical body 56 which penetrates through the function-integrated flexible duct 1 and is arranged with a predetermined gap C between the function-integrated flexible duct 1 and the function-integrated flexible duct 1.
Fixed lid plate 57 that closes the one end opening 1A, and a quadrangular moving pressing plate 58 that is reciprocally provided on the cylindrical body 56 and presses the other end opening 1B of the function-integrated flexible duct 1.
And a cylinder 59 (four in the drawing) made up of a plurality of hydraulic cylinders connected to the respective corners of the moving pressing plate 58.
It has and.

Then, the function-integrated flexible duct 1 is inserted into the tubular body 56, and then the moving pressing plate 58 is set on the tubular body 56. In that state, the moving pressing plate 58
When the function-integrated flexible duct 1 is pushed by, the function-integrated flexible duct 1 is compressed. Like the first compression jig 8, both ends of the compressed function-integrated flexible duct 1 are held in a compressed state by the binding wire K.

According to the eleventh compression jig 55, the cylinder 5 serves as a drive source for compression of the function-integrated flexible duct 1.
9 is used, it is possible to reliably control the compression amount of the function-integrated flexible duct 1.

Further, since the function-integrated flexible duct 1 is supported by the tubular body 56, it is possible to reliably prevent the function-integrated flexible duct 1 from bending during compression. Figure 2
5 and 26 show a twelfth compression jig to which the invention according to claim 16 is applied. In the figure, a twelfth compression jig 60 is a container-equipped bottomed cylindrical receptacle 61 for accommodating the function-integrated flexible duct 1 in a state where one end opening 1A of the function-integrated flexible duct 1 is in contact with the bottom. , A suction pipe 62 whose one end is connected to the bottom 61A of the bottomed cylindrical receptacle 61 which also serves as a container, a suction device 63 which is connected to the other end 62B of the suction pipe 62, and the other end opening 1B of the function-integrated flexible duct 1. And a cap member 64 that can reciprocate in the bottomed cylindrical receiver 61 that also serves as a container.

Then, the suction device 63 evacuates the air in the function-integrated flexible duct 1 from the bottom portion 61A of the container-equipped bottomed cylindrical receiver 61 to make the pressure in the function-integrated flexible duct 1 negative. The body type flexible duct 1 is compressed. Incidentally, like the first compression jig 8,
Both ends of the compressed function-integrated flexible duct 1 are held in a compressed state by binding wires K.

Further, a large number of bottomed cylindrical receptacles 61 that also serve as containers are conveyed in a state of being stacked on a carriage 65. First
2 According to the compression jig, the bottomed cylindrical receptacle 61 that also serves as a container
Has the function of a container, the container-equipped bottomed cylindrical receiver 61 becomes a container as it is when the function-integrated flexible duct 1 is compressed. Loading work can be omitted.

27 and 28 show a thirteenth compression jig to which the invention according to claim 17 is applied. In the figure, a thirteenth compression jig 66 accommodates the function-integrated flexible duct 1 in a state in which the one end opening 1A of the function-integrated flexible duct 1 is brought into contact with the bottom portion 67A, and also serves as a container and a bottomed cylindrical receptacle 67. And the side wall 6 of the bottomed cylindrical receptacle 67 that also serves as a container
7B, positioning holes 68 formed at predetermined intervals, a screw shaft 69 penetrating and detachable in the function-integrated flexible duct 1, and a pressing plate 70 screwed to the screw shaft 69.
And a positioning pin 71 that is inserted into the positioning hole 68 of the bottomed cylindrical receptacle 67 that also serves as a container.

Then, the function-integrated flexible duct 1 is inserted into the container-combined bottomed cylindrical receiver 67, and the one-end opening 1A of the function-integrated flexible duct 1 abuts the bottom portion 67A of the container-combined bottomed cylindrical receiver 67. . Screw shaft 6
By rotating 9, the other end opening 1B of the function-integrated flexible duct 1 is pushed by the pressing plate 70, and the function-integrated flexible duct 1 is compressed. Like the first compression jig 8, both ends of the compressed function-integrated flexible duct 1 are held in a compressed state by the binding wire K.

Further, a large number of bottomed cylindrical receptacles 67 that also serve as containers are conveyed in a state of being stacked on the carriage 72. First
According to the 3 compression jig, the bottomed cylindrical receptacle 67 that also serves as a container is used.
Has the function of a container, so that if the function-integrated flexible duct 1 is compressed, it can be transported as it is, and the loading work of the function-integrated flexible duct 1 into the container can be omitted.

In this embodiment, the function-integrated flexible duct is a straight pipe, but it can be applied to a bent pipe having a gentle curve. Further, in this embodiment, the function-integrated flexible duct is compressed to 1/3, but the compression rate is not limited to such a numerical value.

Further, although the case where the branch duct path is formed has been described in the present embodiment, the present invention is also applicable to the main branch path where the branch duct paths branch and join.

In this embodiment, the case where the container elevator elevator loading process is arranged is described. However, when the construction site is formed in the first floor building, the elevator elevator loading process is described. Is omitted.

[0126]

As described above, according to the invention described in claim 1, the following effects can be obtained. (1) Since the function-integrated flexible duct is processed to have the same original length at the work site as the duct path to be installed at the construction site, it is restored to the original length at the construction site. It is possible to eliminate dimensioning, cutting, and jointing of the iron plate spiral duct at the site. That is, if the function-integrated flexible duct restored to the original length is used as it is, a duct path of a predetermined length can be secured. (2) Since the function-integrated flexible duct has thermal insulation properties, it is possible to eliminate the work of covering the function-integrated flexible duct with the heat insulating material as in the conventional example, and the function-integrated flexible duct can be used as it is. It is possible to eliminate the waste of waste, because there is no room for producing scraps of the heat insulating material, tape, etc. generated by aligning and cutting the heat insulating material, tape, etc. in the iron plate spiral duct as in the conventional example. (3) Since the function-integrated flexible duct has fire protection, even if the function-integrated flexible duct installation work is performed in the early stage of the construction work at the construction site, after the function-integrated flexible duct installation work The outer surface can be protected against the sparks of sparks such as welding generated in the process, and the degree of freedom of construction work at the construction site can be increased. (4) The function-integrated flexible duct installed at the construction site has elasticity, thermal insulation, sealing properties, and fire protection.
As all the functions necessary for the construction site are integrated,
It suffices if the function-integrated flexible duct is simply suspended at the construction site, and no assembly work is required at the construction site to ensure the predetermined functions. Eliminating the assembly work at the construction site. Further, the length adjustment at the construction site can be performed by appropriately shrinking the function-integrated flexible duct. (5) When suspending the function-integrated flexible duct on the ceiling slab at the construction site, restore the compressed function-integrated flexible duct to its original length, and attach the restored function-integrated flexible duct to the hanging tool. Since the duct path can be formed by being suspended from the ceiling slab via the above, a joint for connecting a plurality of iron plate spiral ducts as in the conventional example can be eliminated. (6) Since the function-integrated flexible duct can be placed in a compressed state, it is possible to reduce the installation area of the function-integrated flexible duct in the workplace or the construction site. (7) In the workplace, since the suspending tool is attached to the function-integrated flexible duct, it is not necessary to attach the suspending tool to the iron plate spiral duct at the construction site, and the work at the construction site that has many work processes Can be transferred to
The time at the construction site can be shortened. (8) As described above, it is possible to omit various operations when installing the iron plate spiral duct at a construction site as in the conventional example, and it is possible to shorten the operation process.

According to the second aspect of the present invention, when the function-integrated flexible duct is in a compressed state, the volume of the function-integrated flexible duct is not bulky during transportation, and the function is in a state in which the function-integrated flexible duct is compressed by a transportation container such as a truck or an elevator. The integrated flexible duct can be transported, and the loading work and unloading work at the work place or construction site can be reduced, and the transportation cost can be reduced.

[0128] Further, the object of transportation can be one type, and the management can be facilitated. Further, standard-sized transport containers such as containers can be used. According to invention of Claim 3, the following effects are produced. (1) Since the function-integrated flexible duct has a cylindrical expansion / contraction layer having a coil spring-shaped steel wire as a constituent element, the strength of the steel wire can be obtained over the entire length,
When the function-integrated flexible duct is suspended, the shape can be maintained without causing any bending. (2) Since the function-integrated flexible duct has the cylindrical heat insulating layer, the heat insulating property can be secured. Thereby, the temperature of the conditioned air can be maintained. (3) Since the function-integrated flexible duct has the cylindrical synthetic resin layer, it is possible to secure the sealing property. Thereby, for example, leakage of conditioned air can be prevented. (4) Since the function-integrated flexible duct is protected by the metal film layer, it has a fireproof property on the outer surface and can protect the outer surface against the sparks such as sparks generated during welding work. (5) The function-integrated flexible duct does not use a conventional zinc-iron plate as a material, and when viewed as a whole, it can be made lighter by reducing the specific gravity, and the work at the time of suspending work can be facilitated. (6) Since the cylindrical expansion / contraction layer, the cylindrical heat insulating layer, the cylindrical synthetic resin layer, and the metal film layer, which are materials for the function-integrated flexible duct, have flexibility, the duct path has a gentle bend. Along the way, it is possible to perform bending deformation. (7) Since the function-integrated flexible duct has a circular cross section, it has high strength and can reduce the duct space in the building. (8) Since the function-integrated flexible duct is configured by laminating the cylindrical expansion / contraction layer, the cylindrical heat insulating layer, the cylindrical synthetic resin layer, and the metal film layer, it does not require a wasteful space, Can be made compact.

According to the fourth aspect of the present invention, the cylindrical expansion / contraction layer has a strip-shaped non-woven fabric having locking portions formed on both sides thereof, and the strip-shaped non-woven fabric is spirally wound together with the steel wire. Since the steel wire is sandwiched between the overlapping portions of the locking portion formed by overlapping and winding the side portions of the non-woven fabric, the steel wire expands and contracts when expanding and contracting the function-integrated flexible duct. However, the locking portion follows the expansion and contraction of the steel wire and moves in the longitudinal direction, enabling expansion and contraction of the nonwoven fabric.

According to the fifth aspect of the invention, since the vacuum pump is used, the structure can be simplified. According to the invention described in claim 6, since the pressing plate is supported by the shaft so as to reciprocate, the structure can be simplified.

According to the invention described in claim 7, since the function-integrated flexible duct is compressed by pulling the pressing bag, mechanical equipment can be eliminated. According to the invention as set forth in claim 8, since the function-integrated flexible duct can be compressed while the function-integrated flexible duct is positioned and held in the cylindrical pressing tool, the function-integrated flexible duct can be easily compressed. .

According to the ninth aspect of the invention, the function-integrated flexible duct is compressed while being regulated by the rail jig, so that the compression work can be facilitated. Also, since the rail jig has an inverted gate-shaped cross section, the function-integrated flexible duct can be set horizontally in the rail jig.
Easy to set.

According to the tenth aspect of the present invention, when the function-integrated flexible duct is compressed by the cover plate, the elastic bellows member has a function of restricting the flexure of the function-integrated flexible duct. A member for restricting the flexure of the body type flexible duct is unnecessary, and the elastic bellows member alone is sufficient.

According to the eleventh aspect of the present invention, since the inside of the function-integrated flexible duct is brought to a negative pressure state by the suction device and the screw rod is rotated by the driving means, the work of compressing the function-integrated flexible duct is facilitated. You can Further, the compression amount of the function-integrated flexible duct can be easily adjusted.

According to the twelfth aspect of the invention, since the function-integrated flexible duct can be compressed by the weight, the structure can be simplified. According to the thirteenth aspect of the present invention, since the cylinder is used as a drive source for the compression of the function-integrated flexible duct, it is possible to reliably control the compression amount of the function-integrated flexible duct.

According to the fourteenth aspect of the invention, since the cylinder is used as a drive source for the compression of the function-integrated flexible duct, it is possible to reliably control the compression amount of the function-integrated flexible duct.

Further, it is possible to support the function-integrated flexible duct to be bent by the round bar, and it is possible to reliably prevent the function-integrated flexible duct from being bent during compression. Claim 15
According to the described invention, since the cylinder is used as a drive source for compression of the function-integrated flexible duct, it is possible to reliably control the compression amount of the function-integrated flexible duct.

Further, since the function-integrated flexible duct is supported by the cylindrical body, it is possible to reliably prevent the function-integrated flexible duct from bending during compression. According to the sixteenth aspect of the present invention, the bottomed cylindrical receptacle that also serves as a container has the function of a container, so that the bottomed cylindrical receptacle that also serves as a container is used as it is when the function-integrated flexible duct is compressed. Therefore, it is possible to omit the work of loading the function-integrated flexible duct into the container.

According to the seventeenth aspect of the present invention, the bottomed cylindrical receptacle that also serves as a container has the function of a container. Therefore, when the function-integrated flexible duct is compressed, the bottomed cylindrical receptacle that also serves as a container. Becomes a container as it is, and therefore, it is possible to omit loading work of the function-integrated flexible duct into the container.

[Brief description of drawings]

FIG. 1 is a process diagram of a flexible duct construction method according to an embodiment of the invention described in claim 1.

FIG. 2 is a side view showing a function-integrated flexible duct.

3 is a configuration diagram of the function-integrated flexible duct of FIG.

FIG. 4 is a longitudinal sectional view of an essential part showing a side surface part of the function-integrated flexible duct of FIG.

FIG. 5 is a side view showing a compressed function-integrated flexible duct.

FIG. 6 is a vertical cross-sectional view showing a state in which a compressed function-integrated flexible duct is housed in a container.

FIG. 7 is a cross-sectional view of a container accommodating a compressed function-integrated flexible duct.

FIG. 8 is a side view showing a state in which the restored function-integrated flexible duct is suspended on a ceiling slab via a suspender.

FIG. 9 is a partial cross-sectional explanatory view of a first compression jig to which the invention according to claim 5 is applied.

FIG. 10 is an explanatory diagram of a method for holding the compressed state of the function-integrated flexible duct.

FIG. 11 is a sectional view of a second compression jig to which the invention according to claim 6 is applied.

FIG. 12 is a sectional view of a third compression jig to which the invention according to claim 7 is applied.

FIG. 13 is a sectional view of a fourth compression jig to which the invention according to claim 8 is applied.

FIG. 14 is a perspective view of a fifth compression jig to which the invention according to claim 9 is applied.

FIG. 15 is a sectional view of a sixth compression jig to which the invention according to claim 10 is applied.

FIG. 16 is a perspective view of a seventh compression jig to which the invention according to claim 11 is applied.

FIG. 17 is a perspective view of an eighth compression jig to which the invention according to claim 12 is applied.

FIG. 18 is a perspective view of a ninth compression jig to which the invention according to claim 13 is applied.

FIG. 19 is an explanatory diagram of a method for holding the compressed state of the function-integrated flexible duct.

FIG. 20 is an explanatory diagram of a method for holding the compressed state of the function-integrated flexible duct.

FIG. 21 is a perspective view of a tenth compression jig to which the invention according to claim 14 is applied.

22 is a cross-sectional view taken along line I-I of FIG.

FIG. 23 is a perspective view of an eleventh compression jig to which the invention according to claim 15 is applied.

24 is a cross-sectional view taken along the line II-II of FIG.

FIG. 25 is a perspective view showing a twelfth compression jig to which the invention according to claim 16 is applied.

FIG. 26 is a partial cross-sectional view of a twelfth compression jig to which the invention according to claim 16 is applied.

FIG. 27 is a perspective view showing a thirteenth compression jig to which the invention according to claim 17 is applied.

FIG. 28 is a partial cross-sectional view of a thirteenth compression jig to which the invention according to claim 17 is applied.

FIG. 29 is a perspective view showing a conventional duct route construction method.

FIG. 30 is a cross-sectional view of a conventional flexible duct.

[Explanation of symbols]

 1 Function-integrated flexible duct 2 Cylindrical expansion / contraction layer 4 Cylindrical heat insulation layer 5 Cylindrical synthetic resin layer 6 Metal film layer 7 Lifting tool

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 000142595 Kurimoto Iron Works Co., Ltd. 1-12-19 Kitahori, Nishi-ku, Osaka-shi, Osaka (74) One agent mentioned above Attorney attorney Furuya Furuya (one outside) (72) Inventor Yasuhiro Ashizawa 8-21-1, Ginza, Chuo-ku, Tokyo Stock company Takenaka Corporation Tokyo Main Store (72) Inventor Shuji Kikuta 8-2-1 Ginza, Chuo-ku, Tokyo Takenaka Corporation In-house Tokyo Main Store (72) Inventor Yuji Sasaguchi 8-21-1 Ginza, Chuo-ku, Tokyo Stock company Takenaka Corporation Inside Tokyo Main Store (72) Inventor Shin Yamanouchi 2-6 Nishi-Shinjuku, Shinjuku-ku, Tokyo No. 1 In-house Co., Ltd. (72) Inventor Makoto Muneoka 2-6-1, Nishi-Shinjuku, Shinjuku-ku, Tokyo In-house Co., Ltd. (72) Inventor Kanichi Kamagaya 8-7-14 Kita-machi, Nerima-ku, Tokyo Shares Ceremony company Kamedaya

Claims (17)

[Claims] 1. A function-integrated flexible duct having elasticity, thermal insulation, sealing properties, and fireproofness is compressed in advance in the longitudinal direction at a work place, and a hanger is attached to the function-integrated flexible duct to make a plurality of compressions. The function-integrated flexible ducts that have been restored are transported from the workplace to the construction site, a plurality of compressed function-integrated flexible ducts are restored, and the restored function-integrated flexible ducts are hung on the ceiling slab via the suspenders. A flexible duct construction method characterized by the above. 2. The flexible duct construction method according to claim 1, wherein the plurality of function-integrated flexible ducts are housed in the transport container in a state of being compressed to a length dimension or less. 3. The method for constructing a flexible duct according to claim 1, wherein a cylindrical elastic layer having a coil spring-shaped steel wire, and a fibrous cylinder coated on the outer periphery of the cylindrical elastic layer. A heat insulating layer, a cylindrical synthetic resin layer coated on the outer circumference of the cylindrical heat insulating layer, and a metal film layer coated on the outer circumference of the cylindrical synthetic resin layer. Function integrated flexible duct. 4. The cylindrical expansion / contraction layer has a strip-shaped non-woven fabric formed by forming locking portions on both sides, and the strip-shaped non-woven fabric is wound together with a steel wire into a coil spring shape, and the overlapped wound belt-like shape is provided. 4. The function-integrated flexible duct according to claim 3, wherein a steel wire is sandwiched between the overlapping portions of the locking portions on the overlapping side portions of the non-woven fabric. 5. A bottomed cylindrical receiver for accommodating a function-integrated flexible duct in a state where one end of the function-integrated flexible duct is in contact with the bottom, and one end is connected to the bottom of the bottomed cylindrical receiver. A suction pipe, a vacuum pump connected to the other end of the suction pipe, and a cap member that abuts the other end of the function-integrated flexible duct and is slidable inside the bottomed cylindrical receiver. The compression jig of the flexible duct construction method according to claim 1. 6. A restriction plate for suppressing one end of the function-integrated flexible duct, a shaft penetrating through the function-integrated flexible duct set in the restriction plate, and a pressing plate reciprocally supported by the shaft. The compression jig of the method for constructing a flexible duct according to claim 1, wherein 7. A function-integrated flexible duct having a length dimension smaller than that of the function-integrated flexible duct and accommodating the function-integrated flexible duct with one end of the function-integrated flexible duct abutting the bottom. 2. The method for constructing a flexible duct according to claim 1, wherein the bottom cylindrical receiver and the bottomed cylindrical receiver are constituted by a pressing bag that covers the other end of the function-integrated flexible duct. Compression jig. 8. A function-integrated flexible duct having a length dimension smaller than that of the function-integrated flexible duct and accommodating the function-integrated flexible duct with one end of the function-integrated flexible duct abutting the bottom portion. Cylindrical pusher having a bottom cylindrical receiver, a side surface that is slidable on the inner wall surface of the bottomed cylindrical receiver, and a lid member that is integrally covered with the side surface to cover the other end of the function-integrated flexible duct. The compression jig of the method for constructing a flexible duct according to claim 1, wherein the compression jig is made of a tool. 9. A rail jig having an inverted cross-section with one end closed while accommodating a function-integrated flexible duct, and reciprocating inside the rail jig by abutting against the other end of the function-integrated flexible duct. The compression jig of the method for constructing a flexible duct according to claim 1, wherein the compression jig is composed of a slider. 10. A regulation plate for suppressing one end of a function-integrated flexible duct, an elastic bellows member surrounding the outer periphery of the function-integrated flexible duct set on the regulation plate, and a function provided rotatably on the elastic bellows member. The compression jig of the flexible duct construction method according to claim 1, wherein the compression jig is configured with a lid plate that presses the other end of the integrated flexible duct. 11. A fixed lid plate for closing one end of the function-integrated flexible duct, a movable lid plate for closing the other end of the function-integrated flexible duct, and a suction pipe having one end connected to a hole of the fixed lid plate. A suction device connected to the other end of the suction pipe, a screw rod arranged in parallel with the function-integrated flexible duct, a screw receiving member which moves on the screw rod and is connected to the movable lid plate, The compression jig of the method for constructing a flexible duct according to claim 1, characterized in that the compression jig comprises a driving means for rotating the rod. 12. A vertically-bottomed bottomed cylindrical receiver for accommodating a function-integrated flexible duct and a weight placed on the upper end of the function-integrated flexible duct in the bottomed cylindrical receiver. The compression jig of the flexible duct construction method according to claim 1. 13. A cylindrical receiver for accommodating a function-integrated flexible duct, a cover plate rotatably provided at one end of the cylindrical receiver, and a reciprocatingly provided at the other end of the cylindrical receiver. The compression jig for a flexible duct construction method according to claim 1, further comprising: a pressing plate that presses the integrated flexible duct against the cover plate, and a cylinder connected to the pressing plate. 14. A plurality of round bars which are horizontally mounted by penetrating through a function-integrated flexible duct, a fixing plate fixed to one end of the round bar, and freely movable on the plurality of round bars. 2. A slider which is provided in each of the round bars and which connects the round bars, a pressing plate which is reciprocally provided on a plurality of round bars, and a cylinder which is connected to the pressing plates. Compression jig for the described flexible duct construction method. 15. A cylindrical body that penetrates through the function-integrated flexible duct and is arranged with a predetermined gap from the function-integrated flexible duct, and a fixed lid plate that closes one end of the function-integrated flexible duct. , A reciprocatingly provided on the tubular body, comprising a square-shaped moving pressing plate for pressing the other end of the function-integrated flexible duct, and a plurality of cylinders respectively connected to respective corners of the moving pressing plate. The compression jig for the flexible duct construction method according to claim 1, wherein 16. A container-equipped bottomed cylindrical receiver for accommodating a function-integrated flexible duct in a state where one end of the function-integrated flexible duct is in contact with a bottom portion, and a bottom portion of the container-equipped bottomed cylindrical receiver. A suction pipe with one end connected, a suction device connected with the other end of the suction pipe, and a cap member that abuts on the other end of the function-integrated flexible duct and can reciprocate inside the bottomed cylindrical receptacle that also serves as a container. The compression jig of the flexible duct construction method according to claim 1, wherein the compression jig is configured. 17. A container-equipped bottomed cylindrical receiver for accommodating a function-integrated flexible duct in a state where one end of the function-integrated flexible duct is in contact with a bottom portion, and a side wall of the container-equipped bottomed cylindrical receiver. Positioning holes formed at specified intervals, a screw shaft that penetrates and is removable in the function-integrated flexible duct, a pressing plate that is screwed onto the screw shaft, and a positioning hole for the bottomed cylindrical receptacle that also serves as a container. The compression jig of the method for constructing a flexible duct according to claim 1, wherein the compression jig is configured with a positioning pin to be inserted.