Air-conditioning connection structure and connection method

Abstract

To provide an air-conditioning connection structure that enables an air-conditioning duct and a louver chamber to be easily and reliably connected even when a space between the louver chamber and a beam is narrow in air-conditioning equipment of a building.SOLUTION: A telescopic connection pipe 30 is attached to a louver chamber 10 facing outdoors of a building 1, and the telescopic connection pipe 30 is extended from a contracted state, in which it is retracted to an outdoor side relative to a through hole 3c of a beam 3 adjacent to an indoor side of the louver chamber 10, to an extended state, in which it is extended through the through hole 3c to protrude toward an indoor side of the beam 3. A duct connection portion 32 provided at an end portion of the telescopic connection pipe 30 facing the indoor side is connected to a connection end pipe 22 at an end portion of an air-conditioning duct 21.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a connection structure and a connection method between a louvered chamber facing the outdoors and an air conditioning duct in an air conditioning system for a building, and in particular to an air conditioning connection structure and a connection method suitable for a building structure in which beams are installed close to the indoor side of the louvered chamber. [Background technology]

[0002] For example, Patent Document 1 describes a building air conditioning system having a louver chamber installed facing the outdoors of a building such as a high-rise office building, and an air conditioning duct piped indoors. A steel beam is erected adjacent to the indoor side of the louver chamber. The end of the air conditioning duct is passed through a through-hole in the steel beam and connected to a connecting pipe in the louver chamber. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3232481 (Figure 1) Summary of the Invention [Problem to be solved by the invention]

[0004] Typically, there is a sufficient opening between the louver chamber and the steel beam to allow a worker to connect the air conditioning duct to the louver chamber. The worker inserts his or her body between the louver chamber and the beam and supports the end of the air conditioning duct while performing the connection work. However, in recent years, in high-rise office buildings and other buildings, there have been an increasing number of cases where the space between the louver chamber and the beams is so narrow that it is difficult for workers to fit in. In view of the above circumstances, the present invention aims to provide an air conditioning connection structure that can easily and reliably connect an air conditioning duct to a louver chamber even when the space between the louver chamber and the beam is narrow. [Means for solving the problem]

[0005] In order to solve the above problem, the present invention provides an air conditioning connection structure that connects a louvered chamber facing the outdoors of a building to an air conditioning duct through a beam installed close to the indoor side of the louvered chamber, an expandable connecting pipe attached to the louver chamber and extendable from a contracted state in which the pipe is retracted toward the outdoor side relative to the through-hole of the beam to an expanded state in which the pipe protrudes toward the indoor side of the beam through the through-hole; a duct connection portion provided at an end portion of the expansion / contraction connecting pipe facing the indoor side and connected to an end portion of the air conditioning duct; The present invention is characterized by the following features.

[0006] When installing a louver chamber with a pre-attached expansion joint pipe in a building, or when retrofitting an expansion joint pipe to a louver chamber already installed in a building, the expansion joint pipe is kept in a contracted state, which prevents the expansion joint pipe from interfering with the beam. When connecting the louver chamber and the air conditioning duct, the telescopic connecting pipe is extended and protrudes through the through-hole in the beam onto the indoor side of the beam. The duct connection part of the telescopic connecting pipe is connected to the end of the air conditioning duct in the indoor space of the beam. Therefore, even if the space between the louver chamber and the beam is narrow, the air conditioning duct and the louver chamber can be connected easily and reliably.

[0007] Preferably, the expansion and contraction connecting pipe includes a plurality of stages of nested cylindrical bodies, and the expansion and contraction connecting pipe is extended and contracted by moving the plurality of stages of cylindrical bodies in and out of one another.

[0008] Preferably, the expansion and contraction connecting pipe includes a bellows pipe. Preferably, the bellows pipe has large-diameter annular peaks and small-diameter annular valleys alternately formed along the pipe axis. The expansion and contraction of the peaks and valleys in the pipe axis direction causes the expansion and contraction of the expansion and contraction connecting pipe.

[0009] The method of the present invention is an air conditioning connection method for connecting a louvered chamber facing the outside of a building to an air conditioning duct through a beam installed adjacent to the indoor side of the louvered chamber, The telescopic connecting pipe attached to the louver chamber is extended from a contracted state in which it is retracted to the outdoor side of the through-hole of the beam to an extended state in which it protrudes to the indoor side of the beam through the through-hole, The expansion and contraction connecting pipe is characterized in that a duct connecting portion provided at an end portion facing the indoor side is connected to an end portion of the air conditioning duct. [Effects of the Invention]

[0010] According to the present invention, in an air conditioning system for a building, even if the space between the louver chamber and the beam is narrow, the air conditioning duct and the louver chamber can be easily and reliably connected. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a side cross-sectional view of a building in which an air conditioning system including an air conditioning connection structure according to a first embodiment of the present invention is installed. [Figure 2] FIG. 2 is a side cross-sectional view of the louver chamber of the air conditioning connection structure after it has been installed on the exterior wall of a building and before it is connected to an air conditioning duct. [Figure 3] FIG. 3 is a side cross-sectional view showing how the expansion and contraction connecting pipe is extended and connected to the air conditioning duct after the louver chamber is installed. [Figure 4] FIG. 4 is a side cross-sectional view showing an air conditioning installation including an air conditioning connection structure according to a second embodiment of the present invention in a state before the louvered chamber and the air conditioning duct are connected after installation on the exterior wall of a building. [Figure 5] FIG. 5 is a side cross-sectional view showing how, after the louver chamber is installed, the expansion connection pipe is extended to connect to the air conditioning duct in the air conditioning equipment of the second embodiment. [Figure 6] FIG. 6 is a side cross-sectional view of a building in which the air conditioning equipment of the second embodiment is installed. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. <First embodiment (FIGS. 1 to 3)> FIG. 1 shows the exterior wall side of an inter-floor space in a building 1, such as a high-rise office building. The exterior wall 2 of the building 1 has, for example, a curtain wall structure. Inside the building, a beam 3 is erected adjacent to the exterior wall 2. The beam 3 is a steel beam with an H-shaped cross section, having a vertical web 3a and a horizontal flange 3b. A circular through-hole 3c is formed in the web 3a of the beam 3.

[0013] As shown in FIG. 1, an air conditioning system 4 is installed in the inter-story space of a building 1. The air conditioning system 4 includes a louver chamber 10 and an air conditioning duct unit 20. The louver chamber 10 is installed in an exterior wall 2. The louver chamber 10 includes a louver section 11 and a rising chamber section 12. The louver section 11 penetrates the exterior wall 2 and faces the outdoors. The rising chamber section 12 is formed in the shape of a box with a vertically elongated cross section that rises from the indoor end of the louver section 11 along the indoor side of the exterior wall 2. An indoor side opening 13 is provided in an indoor wall section 12a of the rising chamber section 12. The indoor side opening 13 faces the through hole 3c of the beam 3 at a distance in the indoor / outdoor direction (left and right direction in FIG. 1).

[0014] As shown in Figure 1, a narrow space 5 is formed between the louver chamber 10 and the beam 3. The lower end of the narrow space 5 is connected to the indoor space via an opening 5e. The opening 5e is defined by the indoor wall portion 12a of the rising chamber portion 12 and the outdoor edge 3e of the lower flange 3b.

[0015] As shown in FIG. 1 , the air conditioning duct unit 20 includes an air conditioning duct 21 and an expansion / contraction connecting pipe 30. The air conditioning duct 21 may be a non-combustible pipe containing a non-combustible material as a main component, a rigid pipe containing a hard material as a main component, or a flexible pipe containing a soft material as a main component. Examples of non-combustible pipes include spiral ducts and rolled pipes made of steel plates, etc. Examples of rigid pipes include spiral ducts and rolled pipes, etc. Examples of flexible pipes include glass wool flexible ducts, etc. The hard material or the soft material may be non-combustible, and the air conditioning duct 21 may be composed of a non-combustible rigid pipe or a non-combustible flexible pipe. A shape-retaining coil core material may be provided on the inner periphery of the flexible pipe.

[0016] The length of the air conditioning duct 21 is, for example, several meters or less. Although not shown, an air conditioning device main body, an extension duct, and a damper are connected to the indoor end 21f of the air conditioning duct 21.

[0017] As shown in Fig. 2, a short cylindrical connection end pipe 22 is provided at the outdoor end (left side in Fig. 2) of the air conditioning duct 21. The connection end pipe 22 is formed with a locking receiving portion 23 including, for example, a rectangular locking receiving opening 23c.

[0018] As shown in Figures 1 to 3, an expandable connecting pipe 30 is interposed between the connecting end pipe 22 of the air conditioning duct 21 and the louver chamber 10. The expandable connecting pipe 30 is extendable from a contracted state (Figure 2) to an extended state (Figure 3). Preferably, the expandable connecting pipe 30 is extendable between the contracted state and the extended state.

[0019] As shown in Figure 1, the expansion and contraction connecting pipe 30 includes multiple nested cylindrical bodies 31. These cylindrical bodies 31 have different diameters, with the outermost cylindrical body 31 having a larger diameter and the innermost cylindrical body 31 having a smaller diameter. The outdoor side end (left side in Figure 1) of the outermost and largest diameter cylindrical body 31L is fixed to the peripheral edge of the indoor side opening 13 of the rising chamber section 12. In this way, the expansion and contraction connecting pipe 30 is attached to the louver chamber 10.

[0020] Of the two stages of cylindrical bodies 31 adjacent in the pipe diameter direction in the telescopic connecting pipe 30, the cylindrical body on the smaller diameter side is inserted into the cylindrical body on the larger diameter side so as to be slidable in the pipe axial direction. Although not shown in the drawings, preferably, between these two adjacent stages of cylindrical bodies, there is provided a stopper mechanism that prevents the cylindrical body on the smaller diameter side from slipping out of the cylindrical body on the larger diameter side to the indoor side, and a sealing member that allows these cylindrical bodies to slide relative to each other while providing an airtight seal between them.

[0021] As shown in Fig. 2, the smaller diameter cylindrical bodies of the expansion connecting pipe 30 are housed within the larger diameter cylindrical bodies of the expansion connecting pipe 30, thereby causing the expansion connecting pipe 30 to be in a contracted state. In the contracted state, the expansion connecting pipe 30 is retracted toward the outdoor side (left side in Fig. 2) from the through hole 3c of the beam 3, and preferably is retracted toward the outdoor side (left side in Fig. 2) from the outdoor-side edge 3e of the lower flange 3b of the beam 3. The axial length of the expansion connecting pipe 30 in the contracted state is shorter than the distance between the indoor wall portion 12a and the web 3a, and more preferably shorter than the distance between the indoor wall portion 12a and the outdoor-side edge 3e of the lower flange 3b.

[0022] 3, the smaller diameter cylinders of the expansion connecting pipe 30 are protruded to the indoor side to the maximum extent from the larger diameter cylinders of the expansion connecting pipe 30, thereby putting the expansion connecting pipe 30 in an expanded state. In the expanded state, the expansion connecting pipe 30 passes through the through-hole 3c of the beam 3 and protrudes further into the space 1s on the indoor side than the web 3a of the beam 3. The axial length of the expansion connecting pipe 30 in the expanded state is longer than the distance between the indoor wall portion 12a and the web 3a.

[0023] As shown in Fig. 3, a short cylindrical duct connection part 32 is formed by the innermost small-diameter cylindrical body 31S. The duct connection part 32 is disposed at the end of the expansion and contraction connecting pipe 30 facing the indoor side (the right side in Fig. 3). When the expansion and contraction connecting pipe 30 is in an extended state, the duct connection part 32 is positioned in the indoor side space 1s of the beam 3. The duct connection part 32 is provided with a locking part 33 including, for example, a triangular leaf spring 33a.

[0024] As shown in Fig. 1, the louver chamber 10 and the air conditioning duct 21 are connected via the telescopic connecting pipe 30 in an extended state. The connection end pipe 22 of the air conditioning duct 21 is inserted into the duct connection portion 32 of the telescopic connecting pipe 30. This connects the telescopic connecting pipe 30 and the air conditioning duct 21. The leaf spring 33a fits into the locking receiving opening 23c, thereby locking the locking portion 33 and the locking receiving portion 23. This prevents the telescopic connecting pipe 30 and the air conditioning duct 21 from coming loose from each other. The connection end pipe 22 of the air conditioning duct 21 and the telescopic connection pipe 30 constitute an air conditioning connection structure 29.

[0025] The air conditioning equipment 4 is installed in the building 1 after the exterior walls 2 and beams 3 of the building 1 are constructed. The expansion connecting pipe 30 is sent from the manufacturing plant for the air conditioning duct unit 20 to the assembly plant for the louver chamber 10 and attached to the louver chamber 10. The louver chamber 10 with the expansion connecting pipe 30 attached is carried to the construction site of the building 1 and installed on the exterior wall 2. As shown in FIG. 2 , the expansion connecting pipe 30 at this point is preferably contracted. This makes it possible to avoid the expansion connecting pipe 30 interfering with the beam 3.

[0026] It is also possible to transport the expansion connecting pipe 30 to the construction site separately from the louver chamber 10, and then attach the expansion connecting pipe 30 to the louver chamber 10 at the construction site. After the louver chamber 10 is installed on the building exterior wall 2, the expansion connecting pipe 30 may be retrofitted to the louver chamber 10. Even in this case, by keeping the expansion connecting pipe 30 in a contracted state when retrofitting, it is possible to avoid interference between the expansion connecting pipe 30 and the beam 3.

[0027] As shown in Figures 2 and 3, when connecting the louver chamber 10 and the air conditioning duct 21, the expansion and contraction connecting pipe 30 is extended from the louver chamber 10 toward the indoor side (the right side in Figure 2) so that the duct connection portion 32 of the expansion and contraction connecting pipe 30 protrudes into the indoor space 1s of the beam 3 through the through-hole 3c of the beam 3. At this time, the worker may insert his / her hand into the narrow space 5 from the open opening 5e and grasp and pull out the expansion and contraction connecting pipe 30. Alternatively, the worker may insert his / her hand from the indoor side of the beam 3 into the narrow space 5 through the through-hole 3c and grasp and pull out the expansion and contraction connecting pipe 30.

[0028] Then, as shown in Fig. 3, the expansion connecting pipe 30 and the air conditioning duct 21 are connected in the indoor space 1s of the beam 3. At this time, the guide mark 21g of the air conditioning duct 21 is aligned with the angle of the guide mark 32g of the expansion connecting pipe 30, and the air conditioning duct 21 is then pushed straight toward the outdoor side (left side in Fig. 3) to insert the connection end pipe 22 into the duct connecting portion 32. As a result, as shown in Fig. 1, the locking portion 33 and the lock receiving portion 23 are locked together, and the expansion connecting pipe 30 and the air conditioning duct 21 are prevented from coming loose. In this way, even if the space between the louver chamber 10 and the beam 2 is narrow, the air conditioning duct 21 and the louver chamber 10 can be easily and reliably connected.

[0029] Next, another embodiment of the present invention will be described. In the following embodiments, the same components as those already described will be denoted by the same reference numerals in the drawings and the description thereof will be omitted. <Second embodiment (FIGS. 4 to 6)> As shown in Figures 4 to 6, in an air conditioning connection structure 29B according to the second embodiment of the present invention, an expansion / contraction connecting pipe 30B includes a bellows pipe 40. As shown in Figure 5, large-diameter annular peaks 41 and small-diameter annular valleys 42 are alternately formed along the pipe axis in the bellows pipe 40. The peaks 41 and valleys 42 expand and contract in the pipe axis direction, thereby expanding and contracting the bellows pipe 40 and, ultimately, the expansion / contraction connecting pipe 30B. The material of the bellows tube 40 may be metal or resin.

[0030] As shown in FIG. 5, a short cylindrical duct connection part 32 including a locking part 33 is provided at the end of the bellows tube 40 on the indoor side (the right side in FIG. 5).

[0031] As shown in Figure 4, when installing a louver chamber 10 with an expansion and contraction connecting pipe 30B pre-attached to an exterior wall 2, or when installing an expansion and contraction connecting pipe 30B afterwards to a louver chamber 10 already installed on the exterior wall 2, by contracting the bellows tube 40, it is possible to avoid interference between the expansion and contraction connecting pipe 30B and the beam 3.

[0032] As shown in Fig. 5, when connecting the louver chamber 10 and the air conditioning duct 21, the bellows pipe 40 is extended toward the indoor side (the right side in Fig. 5) so that the expansion and contraction connecting pipe 30B protrudes toward the indoor side (the right side in Fig. 5) of the beam 3 through the through hole 3c in the beam 3. Then, as shown in Fig. 6, the duct connecting portion 32 of the expansion and contraction connecting pipe 30B and the connecting end pipe 22 of the air conditioning duct 21 are connected in the indoor space 1s of the beam 3.

[0033] The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the invention. For example, the connection end pipe 22 may be fitted onto the outer periphery of the duct connection part 32. The connection end pipe 22 may be provided with a locking part 33, or the duct connection part 32 may be formed with a locking receiving part 23. The louver side portion 11 of the louver chamber 10 and the telescopic connecting pipe 30 may be disposed at approximately the same height. A heat insulating coating layer may be provided on the outer periphery of the expansion connecting pipes 30, 40. [Industrial Applicability]

[0034] The present invention can be applied to air conditioning equipment in office buildings, for example. can be applied to. [Explanation of symbols]

[0035] 1. Building 1s Indoor space of beam 2. Exterior walls 3 beams 3c through hole 4 Air conditioning equipment 5 Narrow space 5e open mouth 10 Garage Chamber 12a Indoor wall 13 Indoor entrance 20 Air conditioning duct unit 21 Air conditioning duct 22 Connection end pipe 23 Locking receiving part 29 Air conditioning connection structure 29B Air conditioning connection structure 30 Expandable connecting pipe 30B Telescopic Connecting Pipe 31 Cylinder 31L Largest diameter cylinder 31S Smallest diameter cylinder 32 Duct connection 33 Locking part 40 Bellows 41 Yamabe 42 Valley

Claims

1. An air conditioning connection structure that connects a louvered chamber facing the outdoors of a building to an air conditioning duct through a beam installed adjacent to the indoor side of the louvered chamber, an expandable connecting pipe attached to the louver chamber and extendable from a contracted state in which the pipe is retracted toward the outdoor side relative to the through-hole of the beam to an expanded state in which the pipe protrudes toward the indoor side of the beam through the through-hole; a duct connection portion provided at an end portion of the expansion / contraction connecting pipe facing the indoor side and connected to an end portion of the air conditioning duct; An air conditioning connection structure comprising:

2. The air conditioning connection structure according to claim 1 , wherein the expansion and contraction connecting pipe includes a plurality of nested cylindrical bodies.

3. The air conditioning connection structure according to claim 1 , wherein the expansion and contraction connection pipe includes a bellows pipe.

4. An air conditioning connection method for connecting a louvered chamber facing the outdoors of a building to an air conditioning duct through a beam installed adjacent to the indoor side of the louvered chamber, The telescopic connecting pipe attached to the louver chamber is extended from a contracted state in which it is retracted to the outdoor side of the through-hole of the beam to an extended state in which it protrudes to the indoor side of the beam through the through-hole, An air conditioning connection method, comprising connecting a duct connection portion provided at the end of the expansion and contraction connecting pipe facing the indoor side to the end of the air conditioning duct.

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