JP4754317B2 - Combination structure of duct body and flexible branch - Google Patents

Description

  The present invention relates to a combined structure of a duct main body and a flexible branching tool used in a building air conditioning facility.

Conventionally, in a piping of an air conditioner installed in a ceiling or the like of a building, when a branch pipe branched from the duct body is connected to the duct body, the connection is performed via a branching tool. . As this branching tool, one having a rigid branch pipe made of metal or plastic and a branch pipe plate provided continuously around one end of the branch pipe is known.
For example, in Patent Document 1, “a support member having an outer peripheral surface along the inner peripheral surface of the flexible duct and having a through hole penetrating the inner and outer peripheral surface, and larger than the peripheral surface of the support member. A base plate part having an inner peripheral surface of curvature and a branch pipe part extending radially outward from the base plate part, and forming an internal space communicating with the outside at the tip of the branch pipe part and the inner peripheral surface of the base plate part A branching member for the flexible duct, characterized in that it comprises a branching pipe member.
In the above-described conventional branching tool, the base plate provided with the branch pipe portion and the support member disposed on the inner peripheral surface of the flexible duct (duct body) are opposed to each other via the inner surface member 24, and both are screwed. It is made to join by 59 etc.
As described above, the conventional branching tool requires the branch pipe part, the base plate provided with the branch pipe part, and the support member. Since the number of parts is large, the cost is increased and the weight is increased. When the weight increases, it is necessary to suspend and hold the branching tool part by the hanging tool, and the workability is also deteriorated. In addition, since the rigid branch pipe portion extends from the base plate, the occupied space is increased by the branch pipe portion, and there is a problem that the efficiency of transportation, transportation, etc. is poor.

Japanese Patent No. 2984708

  The present invention has been made in consideration of the above-mentioned disadvantages in the prior art, and can be reduced in weight and cost, and can be improved in transportation efficiency and workability, and a duct body and a flexible branching tool. The object is to provide a combination structure.

(1) The present invention was made to achieve the above object, and comprises a duct body and a flexible branching tool branched from the duct body,
The flexible branching tool comprises a core material that holds a basic shape and at least one airtight layer, and an air flow body that is stretchable in the longitudinal direction, and a support plate that is fixed to one end of the air flow body. ,
A support plate of the flexible branching tool is locked in an opening formed on a side surface of the duct main body so that the flexible branching tool does not come out of the duct main body and is airtight with respect to the duct main body. It is connected to,
The support plate is made of a bowl-shaped plate material, is processed along the inner surface shape of the duct body, and is fixed to the core material of the air circulation body by a locking member at a plurality of positions at appropriate intervals. Yes,
It is a combined structure of a duct body and a flexible branching tool.
(2) In the present invention, it is a preferable aspect that the air circulating member includes at least one airtight layer and a heat insulating layer around the core material.
( 3 ) In the present invention, the duct body is preferably a flexible duct that can be expanded and contracted in the longitudinal direction.

(1) According to the present invention, the branching tool connected to the duct main body includes a core member that retains the basic shape and at least one airtight layer, and an air circulation body that is stretchable in the longitudinal direction, and the air It is composed of a flexible branching tool composed of a support plate fixed to one end of the flow body, and the support plate of the flexible branching tool is locked to the opening of the duct body so that the flexible branching tool is outward from the duct body. Since the connection is made so as not to come out, a support member disposed opposite to the conventional branching tool is unnecessary, and the weight can be reduced and the cost can be reduced. Since the weight is reduced, transportation and handling are easy, and on-site workability is improved. It is also possible to make it unnecessary to suspend the branching tool portion. Furthermore, since the branching tool is flexible and can be expanded and contracted in the longitudinal direction and can be compressed in the longitudinal direction (axial direction), a tape or the like is wound around the duct body while the branching tool is compressed toward the duct body side. Since the state can be maintained, the occupied space can be reduced by this, and the transportation efficiency can be improved.
Further, in the present invention, the support plate is formed of a bowl-shaped plate material, is processed along the inner surface shape of the duct body, and is locked at a plurality of positions with appropriate intervals with respect to the core material of the air circulation body. With the structure fixed by the member, the air circulation body and the support plate can be joined easily, reliably and at low cost.
Since the bowl-shaped board | plate material which comprises a support plate is processed along the inner surface shape of a duct main body, it latches exactly to the opening part formed in the side surface of a duct main body exactly.
(2) Further, in the present invention, since the air circulating member comprises at least one airtight layer and a heat insulating layer around the core material, the heat distribution is excellent, and the heat insulating material is coated during construction. Because it is unnecessary, it is excellent in workability.
( 3 ) In addition, the duct body is composed of a flexible duct that can be expanded and contracted in the longitudinal direction, so that not only the flexible branching tool but also the duct body is wound around the duct body with the duct body compressed in the longitudinal direction. Since this state can be maintained, the occupied space can be further reduced by this, and the transportation efficiency can be improved. Furthermore, since both the duct main body and the branching tool are flexible and both are connected directly, the flexibility is excellent, the flexibility at the time of piping is high, and the workability is good.

  Examples of the present invention will be described with reference to the drawings. However, the present invention is not limited to the following embodiments, and various modifications and additions are possible within the scope of the present invention. Note that the same reference numerals are used for the same elements in the drawings, and description thereof may be omitted as appropriate.

  1 is a partially cutaway perspective view of the flexible branching tool 1 (shown in a state where the air circulation body 10 and the support plate 20 are separated), FIG. 2 is a partially cutaway perspective view of the flexible branching tool 1, and FIG. 4 is a longitudinal sectional view schematically showing the branching tool 1, FIG. 4 is a sectional view showing a fixing aspect of the air circulating body 10 and the support plate 20, and FIG. 5 is a longitudinal section showing an example of a combination of the duct body 30 and the flexible branching tool 1. FIG.

First, the flexible branching tool 1 will be described.
The flexible branching tool 1 includes an air circulation body 10 including an airtight layer 14 and a heat insulating layer 13 around a core material 11 formed in a coil shape, and a support plate fixed to one end of the air circulation body 10. 20.
In the illustrated example, the air circulating member 10 includes a heat insulating layer 13 disposed as an intermediate layer, and an inner skin 12 and an outer skin (airtight layer 14) provided on the inner periphery and outer periphery of the heat insulating layer 13, respectively. ing. It is formed in a tube shape having a constant inner diameter as a whole.
The air circulation body 10 is a cylinder (tube) -like member having a flow passage through which air passes, and the cross-sectional shape thereof is not only a circle as shown in the figure but also an oval shape, a rectangle shape, or the like. Is also possible.
The air circulation body 10 has a tube shape (particularly a radial shape) which is a basic shape by the core material 11 and is flexible and has elasticity. In addition to the core 11 formed in a coil shape, for example, a plurality of non-continuous ring-shaped cores arranged at intervals in the longitudinal direction, such as an Odawara lantern, can be used (not shown). ).

The heat insulation layer 13 is comprised using nonflammable materials, such as glass wool, rock wool, and ceramic wool, and exhibits heat retention and sound deadening property. The interior skin 12 covers the inner surface of the heat insulating layer 13 and can be composed of a sheet or film such as a nonwoven fabric or glass cloth. The airtight layer 14 provided as an outer cover covers the outer surface of the heat insulating layer 13 and is configured by a single layer sheet or a composite sheet using a synthetic resin. As the synthetic resin, for example, a thermoplastic resin such as polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate is preferably used. The exterior skin may be configured as having an aluminum layer. Usually, the outer skin covers the end surface of the heat insulating layer 13 at the end portion (exit side) of the air circulation body 10 and is folded back to the inner surface side of the air circulation body 10, and the end portion is fixed by a stapler or the like (not shown). ) And the adhesive tape 15 is wound around and fixed to the end of the air circulating member. The heat insulating layer 13, the interior skin 12, and the exterior skin are usually not bonded to each other in order to ensure good flexibility, but an adhesive portion may be provided as appropriate.
The interior skin 12 or both the interior skin 12 and the exterior skin may be airtight to form an airtight layer. In addition, the heat insulating layer 13 can be omitted. In this case, the air circulating member 10 is configured by the core material 11 and the interior skin 12 provided as an airtight layer, or provided as the core material 11 and the airtight layer. It can be composed of the interior skin 12 and the exterior skin provided as an airtight layer, or can be composed of the core material 11, the interior skin 12 and the exterior skin provided as an airtight layer.

The core material 11 is not particularly limited as long as the tube shape, which is the basic shape of the air circulation body 10, is maintained and the stretchability is obtained as a whole. Usually, it is fixed to the interior skin 12 by appropriate means and integrated.
The core material 11 is made of, for example, a steel wire, and is disposed between the heat insulating layer 13 and the interior skin 12 and bonded to the interior skin 12. However, the core material 11 may be disposed inside the interior skin 12. The engagement relationship with the interior skin 12 can be set as appropriate. The belt-like interior skin is spirally wound and overlapped and joined at the edge portion, and the core material 11 is positioned in the joined overlapping portion so that the core material 11 is covered with the interior skin. Good.
Another configuration example of the core material 11 is shown in FIG. That is, in the illustrated example, the core material 11 is formed of a continuous metal thin plate such as a galvanized steel plate or iron having a substantially C-shaped cross section (including a U-shape), and the interior of the C-shaped portion is provided inside the C-shaped portion. When the skin 12 is sandwiched, the skin 12 is fixed and integrated with the interior skin 12.
More specifically, in the illustrated example, the interior skin 12 having a predetermined width is formed by being spirally wound so that the edge portions thereof overlap, and one edge portion of the interior skin 12 having a predetermined width is formed by a line member. 17 (for example, an iron metal, galvanized steel wire, etc. made of elastic metal material or nylon or other synthetic resin material) is wrapped around the outer surface to form a folded portion. The other edge portion of the interior skin 12 is overlaid on the upper (outer surface) and wound spirally, and the interior skin 12 and the wire member 17 are connected to each other in a state where the edge portions are overlapped. The core material 11 and the interior skin 12 are integrated with each other by being sandwiched between the C-shaped portions of the material 11.

A support plate 20 is fixed to one end of the air circulation body 10 to constitute the flexible branching tool 1.
The support plate 20 is preferably made of a bowl-shaped plate material (flat plate material) as shown in FIG. Usually, a metal plate such as a steel plate having a thickness of about 0.2 to 0.8 mm is used. The opening 20a at the center of the support plate 20 is formed in a size corresponding to the inner diameter of the air circulation body 10, and has a predetermined width (usually about 2 to 3 cm) and is formed in an annular shape. As shown in FIG. 2, by fixing the support plate 20 to one end of the air circulation body 10, the bowl-shaped plate material constituting the support plate 20 is protruded outward at one end of the air circulation body 10. Forming part. The flange portion has an outer diameter larger than the opening 39 of the duct main body and an outer peripheral edge along the contour of the opening 39 when viewed in relation to the duct main body 30 described later.
The bowl-shaped plate material constituting the support plate 20 is formed in an oval shape, a rectangular shape, or the like in accordance with the cross-sectional shape of the air circulation body 10 in addition to a circular shape as shown in the figure. Processed along the inner shape. For example, when the side surface of the duct body 30 is formed in a curved shape like a cylinder, the duct body 30 is formed to be curved to fit the curved surface.

The means for fixing the support plate 20 to the air circulating member 10 is not limited at all, but is preferably based on the following method.
That is, the support plate 20 is fixed to the core member 11 of the air circulating body 10 by the locking members 21 at a plurality of locations (usually 4 to 6 locations) at appropriate intervals in the circumferential direction of the support plate 20. The core material 11 of the air circulation body 10 is used to adhere to the support plate 20.
An example of the manner in which the core member 11 and the support plate 20 are fixed by the locking member 21 provided on the support plate 20 will be described with reference to FIG.
FIG. 4 (a) uses a rivet 21 a that penetrates the support plate 20 as the locking member 21. A rivet 21a penetrating the support plate 20 is disposed in the support plate 20 in the vicinity of the contact portion between the core member 11 and the support plate 20 located at the end of the air circulation body 10, and the rivet head 21a-1 Thus, the core material 11 is sandwiched and locked with the support plate 20. Thereby, the support plate 20 is fixed to the core material 11.
FIG. 4 (b) uses a claw piece 21 b formed on the support plate 20 as the locking member 21. A claw piece 21b is formed upright on the support plate 20 from the support plate 20 toward the core material 11 in the vicinity of the contact portion between the core material 11 and the support plate 20 located at the end of the air circulation body 10. The core member 11 is sandwiched and locked with the support plate 20 by the claw pieces 21b. Thereby, the support plate 20 is fixed to the core material 11.
FIG. 4 (c) uses a locking piece 21 c installed on the support plate 20 as the locking member 21. In the vicinity of the contact portion between the core member 11 and the support plate 20 located at the end of the air circulating member 10, the locking piece 21c is attached to the support plate 20 by appropriate means (for example, welding, rivet, bolt / nut, etc.). The core member 11 is sandwiched and locked with the support plate 20 by the locking pieces 21c. Thereby, the support plate 20 is fixed to the core material 11.

The connection between the duct body 30 and the flexible branching tool 1 will be described. FIG. 5 is a longitudinal sectional view showing a combination example of the duct body 30 and the flexible branching tool 1. FIG. 5A shows a state before the flexible branching tool 1 is connected to the duct body 30, and FIG. 5B shows a state where the flexible branching tool 1 is connected to the duct body 30.
First, on the side surface of the duct main body 30, an opening 39 is formed that matches the outer diameter of the end of the air distributor 10 of the flexible branching tool 1 on the support plate side. The flexible branching tool 1 is inserted into the opening 39 from the inside of the duct body 30 toward the outside as indicated by the arrow in FIG. Then, as shown in FIG. 5 (b), the support plate 20 protruding in a flange shape of the flexible branching tool 1 is locked around the opening 39, and the flexible branching tool 1 does not come out of the duct body 30 outward. So that they are connected. Thereafter, the boundary between the opening 39 and the flexible branching tool 1 is sealed by wrapping an adhesive tape 40 from the outside, and the connection between the duct body 30 and the flexible branching tool 1 and airtightness are ensured. On the other hand, the flexible branching tool 1 is connected in an airtight manner. Thereby, the combination structure of the duct main body 30 and the flexible branching tool 1 is completed.
Since the bowl-shaped plate material constituting the support plate 20 is processed along the shape of the inner surface of the duct main body 30, the hook-shaped plate material is securely and securely locked to the opening 39 formed on the side surface of the duct main body 30.

  In the combination example of the duct main body 30 and the flexible branching tool 1, the example is shown in which the duct main body 30 is composed of a flexible duct that can be expanded and contracted in the longitudinal direction. That is, the duct body 30 has the same configuration as that of the air circulation body 10 of the flexible branching tool 1, and at least one heat insulating layer 33 and an airtight layer 34 are formed around the core material 31 formed in a coil shape. It has. In addition, a heat insulating layer 33 provided as an intermediate layer, and an inner skin 32 and an outer skin (airtight layer 34) provided on the inner periphery and outer periphery of the heat insulating layer 33, respectively, are provided. It is formed in a tube shape having a constant inner diameter as a whole. The duct body 30 is held in a tube shape by the core material 31 and is flexible and has elasticity. Since each structure of the heat insulation layer 33, the interior skin 32, the exterior skin, and the core material 31 can adopt substantially the same structure as each member of the air circulation body of the flexible branching tool 1 corresponding thereto, the description thereof is omitted. .

  In addition, in this invention, the duct main body 30 is not limited to the above flexible ducts, The material, a shape, etc. are arbitrary. As the duct body 30, for example, a plastic flexible duct, a duct formed by spirally winding a thin metal plate formed into a corrugated shape, a metal plate such as a strip-shaped steel plate, spirally wound, and a metal plate A rigid so-called spiral duct with joined side edge overlapping portions, a duct formed using a hard heat insulating material as a base material, etc. can be used, and the shape of the duct body 30 is not limited to a cylindrical shape. In addition, an elliptical (oval) or rectangular shape (including a rectangular parallelepiped shape such as a chamber box) can be used as the duct body.

It is a partially cutaway perspective view of the flexible branching tool 1 (shown in a state where the air circulation body 10 and the support plate 20 are separated). 3 is a partially cutaway perspective view of the flexible branching tool 1. FIG. It is a longitudinal cross-sectional view which shows the flexible branch tool 1 typically. FIG. 3 is a cross-sectional view showing how the air circulation body 10 and the support plate 20 are fixed. It is a longitudinal cross-sectional view which shows the example of a combination of the duct main body 30 and the flexible branch tool 1. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Flexible branching device 10 Air distribution body 11 Core material 12 Interior skin 13 Heat insulation layer 14 Airtight layer 20 Support plate 21a, 21b, 21c Locking member 30 Duct main body 39 Opening part

Claims (3)

It consists of a duct body and a flexible branching tool branched from the duct body,
The flexible branching tool comprises a core material that holds a basic shape and at least one airtight layer, and an air flow body that is stretchable in the longitudinal direction, and a support plate that is fixed to one end of the air flow body. ,
A support plate of the flexible branching tool is locked in an opening formed on a side surface of the duct main body so that the flexible branching tool does not come out of the duct main body and is airtight with respect to the duct main body. It is connected to,
The support plate is made of a bowl-shaped plate material, is processed along the inner surface shape of the duct body, and is fixed to the core material of the air circulation body by a locking member at a plurality of positions at appropriate intervals. Yes,
Combination structure of duct body and flexible branching tool.   The combined structure of a duct body and a flexible branching device according to claim 1, wherein the air circulation body includes at least one airtight layer and a heat insulating layer around the core material. The said duct main body consists of a flexible duct which can be expanded-contracted in the longitudinal direction, The combined structure of the duct main body and flexible branch tool of Claim 1 or 2 .

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