Air-conditioning duct unit and air-conditioning structure of building, and method for installing air-conditioning duct unit

Abstract

To provide an air-conditioning structure capable of reliably connecting a duct and a louver chamber even when an opening width between the louver chamber and a beam on an outer wall of a building is narrow.SOLUTION: A louver chamber 10 is installed on an outer wall 2 of a building 1. A narrow space 5 with an opening width W5e=600 mm or less is defined between the louver chamber 10 and a beam 3 erected near the louver chamber 10. A first connection pipe 23 of an air-conditioning duct unit 20 is provided on an indoor wall part 12a of the louver chamber 10, a duct 21 of the air-conditioning duct unit 20 is passed through a through hole 3c in the beam 3, and a second connection pipe 24 at the tip part of the duct 21 is connected to the first connection pipe 23. A pushing force for connection input to an indoor part 21a of the duct 21 through the through hole 3c can be transmitted to the second connection pipe 24.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an air conditioning duct unit and air conditioning structure connected to a louver chamber in the exterior wall of a building, and an installation method for an air conditioning duct unit, and in particular to an air conditioning duct unit that penetrates a beam adjacent to the louver chamber and is connected to the louver chamber. [Background technology]

[0002] For example, Patent Document 1 describes an air conditioning structure for a building having a louver chamber installed on the outer wall of a building such as a high-rise office building, and a duct piped to the interior of the building. The louver chamber includes a louver section facing the outdoors and a chamber section facing the interior. The chamber section faces a steel beam erected indoors near the exterior wall. A duct is passed through a through hole in the steel beam. A second connecting pipe at an end of the duct is fitted into a first connecting pipe protruding from the chamber section. A leaf spring-shaped locking protrusion is provided on the first connecting pipe, and a locking opening is formed in the pipe wall of the second connecting pipe. The locking protrusion fits into the locking opening, so that the second connecting pipe is connected to the first connecting pipe in an unremovable manner. [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] Usually, there is a sufficient opening between the louver chamber and the steel beam to allow a worker to connect the duct to the louver chamber. The worker inserts his / her body between the louver chamber and the beam and supports the end of the duct while performing the connection work. However, in recent years, in high-rise office buildings and other buildings, the opening between the louver chamber and the beams has become narrow, making it difficult for workers to fit their bodies between the louver chamber and the beams, and there are an increasing number of cases where workers are unable to even insert their hands between the louver chamber and the beams. In view of the above circumstances, an object of the present invention is to enable a duct and a louver chamber to be reliably connected even if the opening width between the louver chamber and the beam is narrow. [Means for solving the problem]

[0005] In order to solve the above problems, the present invention provides an air conditioning duct unit that is connected to a louver chamber installed on an exterior wall of a building so as to define a narrow space with an opening width of 600 mm or less between the louver chamber and a beam installed close to the exterior wall, A first connecting pipe provided on an indoor wall of the louver chamber; A duct passing through the through hole of the beam; A second connecting pipe provided at an outdoor end of the duct and connected to the first connecting pipe; and the pushing force for connection inputted to the part of the duct on the indoor side relative to the through hole can be transmitted to the second connecting pipe.

[0006] Preferably, the length of the duct is less than 2000 mm.

[0007] Preferably, the duct is formed of one pipe selected from a non-combustible pipe, a hard pipe, and a soft pipe.

[0008] The air conditioning structure for a building according to the present invention comprises the air conditioning duct unit, A louver chamber having an opening width between the beams of 500 mm or less; The present invention is characterized by comprising:

[0009] The method of the present invention is a method of installing the air conditioning duct unit, which is characterized in that while supporting the duct on the indoor side of the beam, the duct and the second connecting pipe are inserted into the narrow space through the through hole, and without directly supporting the inserted portions of the duct and the second connecting pipe, the duct is pushed from the indoor side of the beam to the outdoor side, and the second connecting pipe is connected to the first connecting pipe. Effect of the Invention

[0010] According to the present invention, in the air conditioning structure of a building, even if the opening width between the louver chamber and the beam is narrow, the duct and the louver chamber can be securely connected. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a side view of a building in which an air conditioning structure according to one embodiment of the present invention is installed. [Diagram 2] FIG. 2 is an enlarged cross-sectional side view of the air-conditioning duct unit circular portion II of FIG. 3(b). [Diagram 3] 3A and 3B show the installation process of the air conditioning structure, in which Fig. 3A is a side view of the duct before it is inserted through the beam, and Fig. 3B is a side view of the stage where the duct is inserted through the beam. [Figure 4] 4 shows the installation process of the air conditioning structure, in which (a) is a side view showing the second connecting pipe being fitted into the first connecting pipe, and (b) is a side view showing the state after the second connecting pipe has been fitted into the first connecting pipe. [Diagram 5] Fig. 5 shows how the second connecting pipe and the locking protrusion of the first connecting pipe are locked with each other, Fig. 5(a) is a cross-sectional view of the second connecting pipe abutting against the locking protrusion, Fig. 5(b) is a cross-sectional view along line Vb-Vb in Fig. 4(a), and Fig. 5(c) is a cross-sectional view along line Vc-Vc in Fig. 4(b). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, one embodiment of the present invention will be described with reference to the drawings. 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 close 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.

[0013] As shown in FIG. 1, an air conditioning structure 4 is provided in the space between floors of a building 1. The air conditioning structure 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 side portion 11 and a rising chamber portion 12. The louver side portion 11 penetrates the exterior wall 2 and faces the outdoors. The rising chamber portion 12 is formed in a box shape with a vertically elongated cross section that rises from the indoor end of the louver side portion 11 along the indoor side of the exterior wall 2.

[0014] 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 through an opening 5e. The opening 5e is defined by the indoor wall portion 12a of the rising chamber portion 12 and the outdoor side edge 3e of the lower flange 3b. The opening width W of the opening 5e is 5e That is, the opposing distance between the wall portion 12a and the side edge 3e is W 5e = 600 mm or less, W 5e = 500mm or less is acceptable, W 5e =300mm or less is also acceptable.

[0015] As shown in FIG. 2, the air conditioning duct unit 20 of the air conditioning structure 4 includes a first connecting pipe 23, a duct 21, and a second connecting pipe 24. The first connecting pipe 23 is provided on the indoor wall 12a of the rising chamber 12. The first connecting pipe 23 includes a first connecting pipe body 23a made of a steel pipe, a heat insulating material 25 covering its outer periphery, and a mounting plate 23b. The mounting plate 23b is provided on the outdoor end (left end in FIG. 2) of the first connecting pipe body 23a. The mounting plate 23b is attached to the outer surface of the indoor wall 12a facing the indoor side by screws or the like. As a result, the entire first connecting pipe 23 protrudes from the indoor wall 12a to the beam 3 side (indoor side, right side in FIG. 2).

[0016] Incidentally, the mounting plate 23b may be attached to the inner surface of the indoor wall portion 12a, so that at least a portion of the first connection pipe 23 is embedded in the indoor wall portion 12a.

[0017] The first connecting pipe 23 is provided with a plurality of (e.g., four, only two shown in FIG. 2) locking members 30 spaced apart in the circumferential direction. The locking members 30 are formed in a rectangular plate shape and fixed to the outer circumferential surface of the connecting pipe main body 23a by welding, screws, or the like, with their longitudinal direction directed in the axial direction of the first connecting pipe 23 (left-right direction in FIG. 2). The tip of the locking member 30 facing the mounting plate 23b is bent obliquely inward in the pipe radial direction (toward the back of the paper in FIG. 2), thereby forming a locking protrusion 31. The locking projection 31 may be formed by cutting and raising the connection pipe body 23a.

[0018] 2 and 5(a), the locking projection 31 is formed in a triangular leaf spring shape that protrudes inward in the pipe diameter direction (downward in 5(a)) as it moves toward the outdoor side (leftward in 5(a)) along the pipe axis direction (left-right direction in 5(a)) of the first connecting pipe 23, and also protrudes inward in the pipe diameter direction as it moves toward one side in the pipe circumferential direction (upward in 2). A hole 23c is formed in the connecting pipe main body 23a to pass the locking projection 31 through. In addition, in FIG. 5, the heat insulating material 25 is omitted. The locking projection 31 may be formed in a V-shape.

[0019] The duct 21 may be a non-combustible pipe containing a non-combustible material as a main component, a hard pipe containing a hard material as a main component, or a soft pipe containing a soft material as a main component. Examples of the non-combustible pipe include a spiral duct and a roll pipe made of a steel plate or the like. Examples of the hard pipe include a spiral duct and a roll pipe. Examples of the soft pipe include a glass wool flexible duct. The hard material or the soft material may be non-combustible, and the duct 21 may be composed of a non-combustible hard pipe or a non-combustible soft pipe. A shape-retaining coil core material may be provided on the inner periphery of the soft pipe.

[0020] As shown in FIG. 1, the length L of the duct 21 21 is preferably greater than the width W5 of the narrow space 5 and less than 2000 mm (W5 <L 21 Although not shown in the figure, an air conditioner main body, an extension duct, and a damper are connected to an indoor end 21f of the duct 21.

[0021] An intermediate portion of the duct 21 passes through a through hole 3c formed in the beam 3. An outdoor-side tip portion 21e of the duct 21 is disposed in the narrow space 5. The tip portion 21e is provided with a second connecting pipe 24. A rectangular locking opening 41 is formed in the second connecting pipe 24. The locking projection 31 is locked in the locking opening 41, whereby the second connecting pipe 24 is connected to the first connecting pipe 23. In turn, the air conditioning duct unit 20 is connected to the louver chamber 10.

[0022] The air conditioning structure 4 is installed on the building 1 after the exterior walls 2 and beams 3 of the building 1 are constructed. The first connecting pipe 23 of the air conditioning duct unit 20 is sent from the manufacturing factory of the air conditioning duct unit 20 to the assembly factory of the louver chamber 10, and is attached to the rising chamber section 12. The louver chamber 10 with the first connecting pipe 23 attached is carried into the construction site of the building 1, and installed on the exterior wall 2. Note that the first connecting pipe 23 may be attached to the louver chamber 10 at the construction site after being carried into the construction site. Separately, the duct 21 and the second connecting pipe 24 of the air conditioning duct unit 20 are assembled and carried to the construction site of the building 1.

[0023] As shown in FIG. 3(a), at the construction site of the building 1, the worker A lifts the duct 21 to the height of the beam 3 in the space 6 on the indoor side of the beam 3. Next, as shown in FIG. 3(b), while the duct 21 is supported in the indoor space 6, the second connecting pipe 24 is inserted into the narrow space 5 through the through hole 3c. Furthermore, as shown in FIG. 4(a), while the part 21a of the duct 21 on the indoor side of the through hole 3c is supported, the duct 21 is pushed to the outdoor side, and the second connecting pipe 24 is fitted into the first connecting pipe 23. Preferably, the guide mark 24g of the second connecting pipe 24 is previously aligned with the guide mark 23g of the first connecting pipe 23, and then the duct 21 is pushed straight in to fit the second connecting pipe 24 into the first connecting pipe 23.

[0024] At this time, it is not necessary to directly support the portions of the duct 21 and the second connecting pipe 24 that are inserted into the narrow space 5. Therefore, the worker A does not need to insert his body or his hands into the narrow space 5 through the opening 5e. Therefore, the opening width W 5e Even if the opening width W 5e Even if the opening 5e is too narrow to insert a hand, or even if the hand cannot reach the connection portion between the connection pipes 23, 24 from the opening 5e, no hindrance to the work occurs.

[0025] As shown in Fig. 5(a), by fitting the second connecting pipe 24 into the first connecting pipe 23, the second connecting pipe 24 hits the locking projection 31 of the first connecting pipe 23. As shown in Fig. 5(b), when the duct 21 is further pushed in, the locking projection 31 is pushed by the second connecting pipe 24 and retracts to the outside in the pipe diameter direction (upward in Fig. 5(b)).

[0026] That is, as shown in Figure 4(a), the rigidity, material, pipe diameter, thickness, length and other dimensions of the duct 21 are set so that a pushing force F input to the indoor portion 21a of the duct 21 can be transmitted to the second connecting pipe 24, thereby retracting the locking projection 31. Even if the duct 21 is made of a soft pipe, the force transmission function can be ensured by selecting a soft material, setting the dimensions, attaching a shape-retaining coil core material, etc.

[0027] When the duct 21 is further pushed in, as shown in Fig. 5(c), the locking opening 41 coincides with the locking protrusion 31, so that the locking protrusion 31 elastically returns to its original position and fits into and is locked in the locking opening 41, preventing the duct 21 from being pulled out. This connects the second connecting pipe 24 to the first connecting pipe 23, as shown in Fig. 4(b). Thus, the air conditioning duct unit 20 is connected to the louver chamber 10. In this way, according to the air conditioning structure 4, even if the opening width 5e between the louver chamber 10 and the beam 3 is narrow, the duct 21 and the louver chamber 10 can be reliably connected.

[0028] Finally, whether the connection is correct or not is judged by visually checking through the opening 5e whether the set sign 24s attached to the lower part of the second connecting pipe 24 is completely hidden by the first connecting pipe 23. Alternatively, the inside of the duct 21 is looked at from the indoor side (the right side in FIG. 4(b)) to visually check whether the locking projection 31 is protruding from the inner surface of the second connecting pipe 24.

[0029] When separating the air conditioning duct unit 20 from the louver chamber 10, the second connecting pipe 24 is turned in one direction, causing the locking projection 31 to deform radially outward while sliding along the edge of the locking opening 41. This causes the locking projection 31 to come out of the locking opening 41, and the second connecting pipe 24 can be pulled out of the first connecting pipe 23.

[0030] The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, the second connecting pipe 24 may be fitted onto the outer periphery of the first connecting pipe 23. The second connecting pipe 24 may be provided with a locking projection 31, and the first connecting pipe 23 may be formed with a locking opening 41. The louver side portion 11 of the louver chamber 10 and the first connecting pipe 23 may be disposed at approximately the same height. [Industrial Applicability]

[0031] The present invention can be applied to air conditioning equipment in office buildings, for example. can be applied to. [Explanation of symbols]

[0032] 1. Building 2. Exterior Wall 3 beams 3c through hole 4 Air conditioning structure 5 Narrow space 5e aperture W 5e Opening width 6 Indoor space 10. Garage Chamber 11 Louver side 12 Rising chamber section 12a Indoor wall 20 Air conditioning duct unit 21 Duct 21a Indoor part 23 First connecting pipe 23a First connecting pipe body 23b Mounting plate 23g Guide mark 24 Second connecting pipe 24g Guide Mark 24s set sign 25 Insulation 31 Locking protrusion 41 Locking opening

Claims

1. An air conditioning duct unit connected to a louver chamber installed on an exterior wall of a building so as to define a narrow space with an opening width of 600 mm or less between the louver chamber and a beam installed close to the exterior wall, A first connecting pipe provided on an indoor wall of the louver chamber; A duct passing through the through hole of the beam; a second connecting pipe provided at an outdoor end of the duct and connected to the first connecting pipe; and wherein the pushing force for connection inputted to the portion of the duct on the indoor side relative to the through hole is transmittable to the second connecting pipe.

2. 2. The air conditioning duct unit according to claim 1, wherein the length of the duct is 2000 mm or less.

3. 2. The air conditioning duct unit according to claim 1, wherein the duct is made of one pipe selected from a non-flammable pipe, a hard pipe, and a soft pipe.

4. An air conditioning duct unit according to any one of claims 1 to 3; A louver chamber having an opening width between the beams of 500 mm or less; An air conditioning structure for a building, comprising:

5. A method for installing an air conditioning duct unit as described in any one of claims 1 to 3, characterized in that while supporting the duct on the indoor side of the beam, the duct and the second connecting pipe are inserted into the narrow space through the through hole, and without directly supporting the inserted portions of the duct and the second connecting pipe, the duct is pushed from the indoor side of the beam to the outdoor side, and the second connecting pipe is connected to the first connecting pipe.

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