JP2008241120A - Air-conditioning system comprising meandering suppressing-preventing mechanism of flexible duct, and meandering suppressing-preventing construction method of flexible duct - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a construction method capable of preventing a flexible duct linearly laid while expanded in construction, from being further expanded and meandering by bulging caused by increase of internal pressure by an operation of an air conditioner. <P>SOLUTION: A meandering preventing mechanism composed of a plurality of hang bolts 2 buried in a building structure at regular intervals, and mounting and fixing bands 2' firmly grasping the flexible duct, or a meandering preventing mechanism composed of a linear guide 4 disposed along the expanded flexible duct, the plurality of hang bolts or hang bands for fixing the guide to the building structure, and the mounting and fixing bands wound to bundle the guide and the expanded flexible duct at regular intervals, and firmly fixing the flexible duct to the guide, is applied. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an air conditioning system that uses a flexible duct as a duct for supplying regulated air from an air conditioner to an air conditioning target space. The present invention relates to an air conditioning system including a meandering suppression / prevention mechanism that suppresses / prevents meandering from being further stretched due to expansion, and a meandering suppression / prevention method for a flexible duct.

In a conventional air conditioning system, a duct having a square or circular cross section made of a steel plate has been mainly used as a duct connecting an air conditioner and a space to be air conditioned. However, since this steel plate duct needs to be connected at regular intervals at the work site due to restrictions on transportation and construction, construction takes time and construction costs increase. Therefore, in order to shorten the construction time and the construction cost, in recent years, the use of flexible ducts that are transported in a shortened state and stretched and constructed at the work site is increasing.
This flexible duct is transported in a shortened state as described above, and can be stretched and constructed at the work site, so that it is not only longer than a conventional steel plate duct but also can be bent freely. As a result, the number of connection points is reduced, the degree of freedom of duct arrangement is increased, and the construction becomes easy. On the other hand, the good stretchability and the ease of construction make it difficult to increase the internal pressure due to the operation of the air conditioner. Due to the bulging, the flexible duct that should have been arranged linearly is stretched, causing a phenomenon of meandering from side to side (see FIG. 4).
The reason is that the flexible duct is not disposed in a fully stretched state but is disposed with some play. If the flexible duct is used only in a straight section, the air duct will be operated to prevent and prevent the flexible duct from meandering if it is stretched with great care so that there is no room for expansion due to the increased internal pressure. However, when a bent portion exists in the middle, it is necessary to connect each bent portion via a chamber or the like, and the advantage that the flexible duct is long and can be bent cannot be utilized. Therefore, a certain amount of play is required to reduce the construction time and cost of the air conditioning system by taking advantage of the advantages of the flexible duct, and this play increases as the internal pressure increases due to the operation of the air conditioner. Leads to meandering.
Furthermore, since flexible ducts are lighter than steel ducts, they are not firmly fixed to the building body, and are often suspended by suspension bands, etc., which makes it easier to meander the flexible ducts. It's also happening.
The meandering of the flexible duct is damaged when the flexible duct comes into contact with a member suspended on the ceiling, such as a suspension member for wiring, or when the flexible duct is bent, the resistance to the air current on the inner wall of the flexible duct increases. The problem was that the amount of air to be supplied to the air-conditioning space was insufficient.

Regarding piping of resin pipes and the like having flexibility, Japanese Patent Application Laid-Open No. 2002-303385 of Patent Document 1 discloses that exposed pipes attached to bridges and the like are thermally expanded and contracted due to changes in the outside air temperature, thereby causing the pipes to meander greatly. Or a pipe support method that prevents the joints connecting the pipes from being pulled out of the joint by applying a tensile force. An invention is disclosed in which the amount of thermal expansion and contraction of the resin pipe of the metal fitting tube is reduced and the amount of thermal expansion and contraction is dispersed.
Further, Japanese Patent Application Laid-Open No. 9-53752 of Patent Document 2 states that “an FEP pipe (flexible polyethylene pipe) is extended in an excavation groove formed by excavating the ground surface, and a constant tension is applied to the FEP pipe. An anti-rolling material is driven at an arbitrary interval in the longitudinal direction of the excavation groove, the FEP pipe is sandwiched and fixed, and then the excavated soil is backfilled. "The invention is disclosed.
Further, Japanese Patent Laid-Open No. 8-277966 of Patent Document 3 states that “the resin pipe is fixed at least in two places by the fixing support means in the flexible resin pipe piping structure, and the two places of the fixed support are fixed. The length of the resin pipe between the means is equal to or more than a length obtained by adding a predetermined amount of heat shrinkage to the minimum pipeable length between the two fixed support means, and at least between the two fixed support means An invention in which the resin tube is supported in a free state by a free support means at one place is disclosed.
The flexible pipes targeted by the above inventions are water pipes attached to bridges in the invention of Patent Document 1, and in the invention of Patent Document 3, water pipes, hot water pipes, cold and hot waters for medium- and high-rise buildings such as apartments. In the invention of Patent Document 2, it is an insertion pipe for an embedded cable, and the flexible pipe is fixed to the bridge or the bottom of the excavation groove with a clamp fitting or roll prevention material in order to suppress expansion and contraction of the flexible pipe, or The flexible duct for air conditioning is hung on the building structure, and it must be prevented from meandering by suppressing the expansion and contraction via the hanging tool. The temperature-controlled air flowing through the interior increases duct resistance due to the appearance of an unexpected bend and the occurrence of drift, which causes measurement errors in the air flow adjustment device and leads to excess or deficiency of the supply air flow required for the air-conditioning target space. As described in Patent Document 3, How to absorb at the bent portion of the expansion and contraction of the Shiburudakuto can not take.
JP 2002-303385 A JP-A-9-53752 JP-A-8-277966

  In view of the above-described background art, the present invention includes a flexible duct meandering suppression / prevention mechanism that can suppress and prevent meandering of the flexible duct and stably supply the temperature-controlled air necessary for the air-conditioning target space. An air conditioning system and a flexible duct meandering suppression / prevention method capable of suppressing / preventing meandering of a flexible duct are provided.

The present inventors have solved the above problems by the following means.
(1) In an air conditioning system that uses a flexible duct as a duct for supplying regulated air from an air conditioner to a space to be conditioned, the flexible duct that is stretched during installation and arranged linearly is the internal pressure due to the operation of the air conditioner. An air conditioning system equipped with a meandering suppression / prevention mechanism for a flexible duct, characterized by comprising a meandering suppression / prevention mechanism for the flexible duct that suppresses / prevents meandering from being further stretched due to bulging due to an increase in the size of the duct.

(2) The meandering suppression / prevention mechanism includes a plurality of suspension bolts planted in a building structure at regular intervals, a flexible duct in which one side portion is fixed to each suspension bolt and the other side portion is extended. An air conditioning system comprising the flexible duct meandering suppression / prevention mechanism according to item (1), wherein the air conditioning system comprises a mounting and fixing band that is wound around an outer periphery of the flexible duct and firmly holds the flexible duct. .
(3) The flexible duct meandering suppression / prevention mechanism as described in (1) or (2) above, wherein an interval between the plurality of suspension bolts planted at a constant interval is 1.2 m or less. Air conditioning system equipped with.

(4) The meandering suppression / prevention mechanism includes a linear guide disposed along the extended flexible duct, a plurality of suspension bolts or suspension bands for fixing the guide to a building structure, and the guide And the flexible duct stretched and bundled at regular intervals and wound, and the flexible duct according to (1), wherein the flexible duct is firmly fixed to the guide. An air conditioning system with a meandering suppression / prevention mechanism for ducts.
(5) Suspension bolts or suspensions for mounting and fixing bands for bundling and winding guides and flexible ducts at regular intervals and arranged at intervals of 1.2 m or less, and fixing the guide rods to the building structure An air conditioning system comprising the flexible duct meandering suppression / prevention mechanism as described in (4) above, wherein the bands are provided at intervals of 4 m or less.
(6) An air conditioner equipped with a meandering suppression / prevention mechanism for a flexible duct using the flexible duct according to (4) or (5), wherein the guide is a rod-shaped body made of iron, aluminum, or resin. system.

  (7) The air conditioning system using the flexible duct according to any one of (2) to (5) above, wherein the mounting and fixing band is made of resin or cloth.

(8) In an air conditioning system that uses a flexible duct as a duct for supplying regulated air from an air conditioner to a space to be conditioned, one side portion of each of a plurality of suspension bolts planted at regular intervals in a building structure By winding the other side portion of the mounting fixing band to which the wire is fixed around the stretched flexible duct and firmly gripping the flexible duct, the flexible duct bulges due to an increase in internal pressure due to the operation of the air conditioner A flexible duct meandering prevention method characterized in that it is possible to suppress / prevent meandering from being further stretched by means of.
(9) The flexible duct meandering prevention method as described in (8) above, wherein the interval between the plurality of suspension bolts planted at a constant interval is within 1.2 m.

(10) In an air conditioning system that uses a flexible duct as a duct for supplying regulated air from an air conditioner to a space to be conditioned, a straight line suspended by a plurality of suspension bolts or suspension bands fixed to a building structure The extended flexible duct is arranged along the guide, and the extended flexible duct and the guide are wound and bundled by attaching and fixing bands at regular intervals, and the flexible duct is firmly fixed to the guide. By doing so, it is possible to suppress and prevent the flexible duct from being further stretched due to bulging due to an increase in internal pressure due to the operation of the air conditioner.
(11) A suspension bolt or suspension band for fixing and fixing the guide and the flexible duct at regular intervals is disposed at intervals of 1.2 m or less, and the guide is fixed to the building structure. Is provided at intervals of 4 m or less. The flexible duct meandering prevention method according to item (10), wherein
(12) The meandering prevention method for a flexible duct according to (10) or (11), wherein the guide is a rod-shaped body made of iron, aluminum, or resin.

  (13) The flexible duct meandering prevention method according to any one of (8) to (12) above, wherein the mounting and fixing band is made of resin or cloth.

  <1> In an air conditioning system using a flexible duct as a duct for supplying regulated air from an air conditioner to a space to be conditioned, each of the plurality of suspension bolts installed in the building structure at regular intervals. The other side portion of the mounting and fixing band to which one side portion is fixed is wound around the outer periphery of the stretched flexible duct so that the flexible duct is firmly gripped. Further expansion and meandering due to bulging due to increased internal pressure due to operation of the air conditioner can be suppressed / prevented. When the required air volume to be sent to the air-conditioning target space is insufficient due to the increase in duct resistance against the air flow due to the appearance Cormorant problem can be solved.

<2> In an air conditioning system that uses a flexible duct as a duct for supplying regulated air from an air conditioner to an air-conditioned space, a straight line suspended by a plurality of suspension bolts or suspension bands fixed to a building structure The extended flexible duct is arranged along the guide, and the extended flexible duct and the guide are wound and bundled by attaching and fixing bands at regular intervals, and the flexible duct is firmly fixed to the guide. As a result, the flexible duct can be restrained and prevented from being further stretched due to the expansion due to the increase of the internal pressure due to the operation of the air conditioner, and the flexible duct is in contact with the ceiling suspended object and damaged. Or air flow due to the appearance of an unexpected bend due to the meandering of the flexible duct. A problem that the necessary air volume to be sent to the space to be air-conditioned by the increase of the sheet resistance is insufficient can be solved.
<3> In addition to the effect of <2> above, a linear guide is disposed along the extended flexible duct, and both are firmly bundled with mounting and fixing bands at a plurality of locations, and the guide is suspended by a hanging bolt or Since it is suspended from the building structure with a suspension band, the distance between the suspension bolts or suspension bands can be increased and the number of suspension bolts or suspension bands can be reduced compared to the case where each fixing band is secured to the suspension bolt. Becomes easier.

  <4> The above <1> and <2> effects enable stable operation of an air conditioning system using a flexible duct, reducing the construction time and cost of the air conditioning system, and the air conditioning system using the flexible duct. Can be expected to spread.

Embodiments of an air conditioning system and a flexible duct meandering prevention method according to the present invention will be described with reference to the drawings of Examples.
FIG. 1 shows a plurality of suspension bolts planted in a building structure, one side fixed to the suspension bolt, and the other side wound around the outer periphery of the flexible duct to firmly hold the flexible duct. 2 is an explanatory view of a meandering suppression / prevention mechanism composed of a fixing band, FIG. 2 is a detailed explanatory view of a suspended portion of the meandering suppression / prevention mechanism of FIG. 1, and FIG. 3 is arranged along an extended flexible duct. The linear guide, a plurality of suspension bolts or suspension bands for fixing the guide to the building structure, and the guide and the extended flexible duct are bundled at regular intervals and wound to wind the flexible duct. It is explanatory drawing of the meandering suppression mechanism which consists of a band for attachment fixation firmly fixed to a guide.
In the figure, 1 is a flexible duct, 2 is a suspension bolt, 2 'is a suspension band, 3 is a mounting and fixing band, 4 is a guide, 5 is a bolt, 6 is a nut, 7 is a building structure, and 8 is an insert.

In the present embodiment, in the air conditioning system that uses the flexible duct 1 as a duct for supplying regulated air from the air conditioner to the air conditioning target space, as shown in FIG. A suspension bolt 2 and a fixing band for tightly gripping the flexible duct 1 wound around the outer periphery of the flexible duct 1 with one side fixed to the suspension bolt 2 and the other side stretched. 3 and a flexible duct meandering suppression / prevention mechanism, wherein one side portion of the mounting and fixing band 3 is fixed to each of a plurality of suspension bolts 2 planted at regular intervals in the building structure. The flexible fixing band 1 is wound around the outer periphery of the stretched flexible duct 1 to firmly grip the flexible duct 1, thereby The bull duct 1 is further suppressed / prevented from meandering due to expansion due to an increase in internal pressure due to operation of an air conditioner (not shown), and the interval between the plurality of suspension bolts 2 is 1.2 m. It is preferable to be within.
FIG. 2 is a detailed explanatory view of the hanging portion of the meandering suppression / prevention mechanism of FIG. As shown in FIG. 2, the mounting and fixing band 3 is tightly wound around the outer periphery of the flexible duct 1, and both ends thereof are overlapped, and a bolt 5 and a nut 6 are used to firmly hold the flexible duct. The end of the fastening band 3 that is fastened and overlapped is bent, and the lower end of the suspension bolt 2 is inserted into a mounting hole formed in that portion, and fastened by two nuts 6 and 6 from both sides. . The upper end of the suspension bolt 2 is planted in the building structure 7.
For example, as shown in FIG. 2, the suspending bolts are planted in such a manner that the insert 8 is integrated with the building structure 7 in advance, and the suspending bolt is hung on the female screw drilled at the lower end of the insert 8. It is necessary that the suspension bolt 2 is firmly fixed to the building structure 7 such that the bolt 2 is screwed so that the suspension bolt 2 itself is not displaced except for bending.
The mounting and fixing band 3 is preferably made of resin or cloth, but a steel band may be used when more firm fixing is required.

In this embodiment, in the air conditioning system that uses the flexible duct 1 as a duct for supplying regulated air from the air conditioner to the air-conditioning target space, the flexible duct 1 is disposed along the stretched flexible duct 1 as shown in FIG. A linear guide 4, a plurality of suspension bolts 2 or suspension bands 2 ′ for fixing the guide 4 to the building structure 7, and the guide 4 and the extended flexible duct 1 are bundled at regular intervals. It is provided with a meandering suppression / prevention mechanism for the flexible duct 1 composed of a mounting and fixing band 3 that firmly winds the flexible duct 1 to the guide 4 and linearly extends along the stretched flexible duct 1. The guide 4 is disposed, and the extended flexible duct 1 and the guide 4 are wound around the fixing fixing band 3 at regular intervals. The flexible duct 1 is firmly fixed to the guide 4 after being bundled, and then the flexible duct 1 is fixed to a suspension bolt 2 or a suspension band 2 ′ planted in the building structure 7. (Not shown) for restraining / preventing meandering from being further stretched by bulging due to an increase in internal pressure, and fixing the guide 4 and the flexible duct 1 together at regular intervals It is preferable that the bands 3 are arranged at intervals of 1.2 m or less, and the suspension bolts 2 or the suspension bands 2 ′ for fixing the guide 4 to the building structure 7 are provided at intervals of 4 m or less.
The guide 4 is preferably a rod-shaped body made of iron, aluminum, or resin, and its cross-sectional shape may be any shape such as a circle, an ellipse, and a rectangle, but it can withstand the load of the flexible duct 1 to be suspended. In addition, it is preferably light and inexpensive. The number of guides arranged along the flexible duct is not limited to one, and a plurality of guides may be used.
The mounting and fixing band 3 is preferably made of resin or cloth.

For mounting and fixing a plurality of suspension bolts planted in a building structure and one side portion fixed to each suspension bolt and the other side portion wound around the outer periphery of the flexible duct to firmly hold the flexible duct Explanation of meandering suppression / prevention mechanism with band Detailed explanatory view of the hanging portion of the meandering suppression / prevention mechanism of FIG. A linear guide disposed along the extended flexible duct, a plurality of suspension bolts or suspension bands for fixing the guide to the building structure, and the guide and the extended flexible duct at regular intervals. Explanatory drawing of the meandering suppression mechanism which consists of the band for attachment fixation which binds and winds up for every and firmly fixes the said flexible duct to a guide Explanatory diagram of the phenomenon that the flexible duct is stretched and meanders left and right

Explanation of symbols

1: Flexible duct 2: Suspension bolt 2 ': Suspension band 3: Mounting fixing band 4: Guide 5: Bolt 6: Nut 7: Building structure 8: Insert

Claims (13)

  In an air conditioning system that uses a flexible duct as a duct for supplying regulated air from an air conditioner to an air conditioning target space, the flexible duct that is stretched and arranged linearly during construction is due to an increase in internal pressure due to the operation of the air conditioner An air conditioning system equipped with a meandering suppression / prevention mechanism for a flexible duct, characterized by comprising a meandering suppression / prevention mechanism for a flexible duct that suppresses / prevents meandering from being further stretched by swelling.   The meandering suppression / prevention mechanism includes a plurality of suspension bolts planted in a building structure at regular intervals, and an outer periphery of a flexible duct in which one side portion is fixed to each suspension bolt and the other side portion is extended. The air conditioning system having a flexible duct meandering suppression / prevention mechanism according to claim 1, wherein the air conditioning system is constituted by an attachment fixing band that is wound and firmly holds the flexible duct.   3. The air conditioning system having a flexible duct meandering suppression / prevention mechanism according to claim 1, wherein an interval between the plurality of suspension bolts planted at a constant interval is 1.2 m or less. 4.   The meandering suppression / prevention mechanism includes a linear guide disposed along the extended flexible duct, a plurality of suspension bolts or suspension bands for fixing the guide to the building structure, the guide and the extension The meandering suppression of a flexible duct according to claim 1, characterized in that the flexible duct is formed by a band for mounting and fixing the flexible duct bundled at regular intervals and wound to firmly fix the flexible duct to a guide.・ Air conditioning system with prevention mechanism.    Mounting and fixing bands for bundling and winding the guide and flexible duct at regular intervals are arranged at intervals of 1.2 m or less, and suspension bolts or suspension bands for fixing the guide to the building structure are within 4 m. The air conditioning system provided with the meandering suppression / prevention mechanism of the flexible duct according to claim 4, wherein the air conditioning system is provided at intervals of   6. The air conditioning system with a flexible duct meandering suppression / prevention mechanism according to claim 4, wherein the guide is a rod-shaped body made of iron, aluminum, or resin.   The air conditioning system having a meandering suppression / prevention mechanism for a flexible duct according to any one of claims 2 to 5, wherein the fixing band is made of resin or cloth.   In an air conditioning system that uses a flexible duct as a duct for supplying regulated air from an air conditioner to an air conditioned space, one side is fixed to each of a plurality of suspension bolts planted in a building structure at regular intervals. By winding the other side of the fixing band on the outer periphery of the stretched flexible duct and firmly gripping the flexible duct, the flexible duct is further stretched due to expansion due to an increase in internal pressure due to operation of the air conditioner. A flexible duct meandering suppression / prevention method characterized in that the meandering can be suppressed / prevented.   9. The flexible duct meandering suppression / prevention method according to claim 8, wherein an interval between the plurality of suspension bolts planted at a constant interval is within 1.2 m.   In an air conditioning system that uses a flexible duct as a duct for supplying regulated air from an air conditioner to an air conditioned space, a linear guide suspended by a plurality of suspension bolts or suspension bands fixed to the building structure By arranging the stretched flexible ducts along with each other and winding the stretched flexible ducts and the guides around the fixed fixing bands at regular intervals, and binding the flexible ducts firmly to the guides. A flexible duct meandering suppression / prevention method, characterized in that the flexible duct can be further suppressed / prevented from being meandered due to expansion due to an increase in internal pressure due to operation of an air conditioner.   Mounting and fixing bands for bundling and winding the guide and flexible duct at regular intervals are arranged at intervals of 1.2 m or less, and suspension bolts or suspension bands for fixing the guide to the building structure are within 4 m. The meandering suppression / prevention method for flexible ducts according to claim 10, wherein the meandering is provided at intervals of   12. The flexible duct meandering suppression / prevention method according to claim 10 or 11, wherein the linear guide is a rod-shaped body made of iron, aluminum, or resin. The meandering suppression / prevention method for flexible ducts according to any one of claims 8 to 12, wherein the mounting and fixing band is made of resin or cloth.