Box Diffuser

Abstract

To provide a box-shaped diffuser which can prevent an adiabatic material from being damaged and fallen while maintaining high adiabatic effect.SOLUTION: A box-shaped diffuser includes: a diffuser body 2 having an inspection port 3; a lid body 4 which opens or closes the inspection port 3; a first adiabatic material 11 which covers an inner wall surface 2a of the diffuser body 2; and a second adiabatic material 12 which covers an inner wall surface 4a corresponding to the inspection port 3 of the lid body 4. The second adiabatic material 12 is formed in a size such that the second adiabatic material 12 is spaced apart from an opening edge of the inspection port 3 by a predetermined distance D and is formed so as to be inserted into the diffuser body 2 from the inspection port 3. A gasket 17 having adiabaticity is provided at a portion, which encloses the second adiabatic material 12, in the inner wall surface 4a of the lid body 4 so as to contact with the second adiabatic material 12 tightly.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a box-shaped diffuser that is to be part of an air conditioning duct placed above the ceiling. [Background technology]

[0002] A conventional box-shaped diffuser of this type is described in, for example, Patent Document 1. Patent Document 1 discloses a box-shaped main body having an inspection hatch and a lid for opening and closing the inspection hatch. Thermal insulation material is attached to the inner surface of the main body and the inner surface of the lid. The thermal insulation material on the lid side is attached to the lid so that it does not come into contact with the thermal insulation material on the main body side and scatter when the lid is attached or detached. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication 2015-152212 Summary of the Invention [Problem to be solved by the invention]

[0004] The heat insulating material of the box body disclosed in Patent Document 1 rubs against the heat insulating material on the main body side every time the inspection hatch is opened. Heat insulating materials are generally covered with a covering material, and if the lid body is attached and detached many times, the covering material may wear out due to friction with other heat insulating materials and develop holes. In addition, when the lid body is removed, the heat insulating material on the lid body side may be pulled by the heat insulating material on the main body side due to friction and may come off the lid body. The problem of friction can be solved by forming the heat insulating material on the lid body side so that it does not come into contact with the heat insulating material on the main body side. However, doing so results in gaps between the heat insulating materials, reducing the heat insulating effect.

[0005] An object of the present invention is to provide a box-shaped diffuser that can prevent the insulating material from being damaged or falling off while maintaining a high insulating effect. [Means for solving the problem]

[0006] In order to achieve this object, the box-shaped diffuser of the present invention comprises a diffuser body formed in a box shape with an inspection hatch; a lid body that is detachably attached to the diffuser body and closes the inspection hatch when attached to the diffuser body and opens the inspection hatch when removed from the diffuser body; a first insulating material covering the inner wall surface of the diffuser body; and a second insulating material covering the inner wall surface of the lid body that corresponds to the inspection hatch, the second insulating material being formed to a size that is spaced a predetermined distance from the opening edge of the inspection hatch and being formed so that it can be inserted into the diffuser body from the inspection hatch with the lid body attached to the diffuser body, and a gasket having insulating properties is provided on the inner wall surface of the lid body that surrounds the second insulating material so as to be in close contact with the second insulating material.

[0007] In the box-shaped diffuser of the present invention, the inspection hatch may be formed by being surrounded by an inner flange provided on the diffuser body, and the gasket may be sandwiched between the inner flange and the lid body.

[0008] In the box-shaped diffuser of the present invention, the second insulating material may be held to the lid by a pin member with a pressure plate that penetrates the second insulating material. Effect of the Invention

[0009] In the present invention, since the second insulating material is unlikely to come into contact with the opening edge of the inspection hatch when the lid is attached or detached, no load is placed on the insulating material even if the lid is repeatedly opened and closed. Thermal insulation between the insulating material of the lid and the main body is performed by the gasket of the lid. Therefore, it is possible to provide a box-shaped diffuser that can prevent the insulating material from being damaged or falling off while maintaining a high insulating effect. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is an exploded perspective view of a box-shaped diffuser according to the present invention. [Diagram 2] FIG. 2 is a front view showing the inspection hatch of the diffuser body. [Diagram 3] FIG. 3 is a front view showing the inner surface of the lid. [Figure 4] FIG. 4 is a cross-sectional view of the essential parts showing a state in which the cover body is removed from the diffuser body. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, one embodiment of a box-shaped diffuser according to the present invention will be described in detail with reference to Figs. The box-shaped diffuser 1 shown in Fig. 1 is placed on a ceiling wall (not shown) and connected to an air conditioning duct above the ceiling. This box-shaped diffuser 1 is equipped with a diffuser body 2 made of a box body and a lid 4 for opening and closing an inspection hatch 3 of the diffuser body 2.

[0012] The diffuser body 2 is formed in a cubic shape, has a damper 5 on one side, and has an inspection hatch 3 on a side 6 adjacent to the damper 5. An air outlet member 8 is provided on a bottom wall 7 of the diffuser body 2. The diffuser body 2 according to this embodiment is formed into a predetermined shape by combining a plurality of metal plates. In addition, a first heat insulating material 11 and a second heat insulating material 12 are provided on an inner wall surface 2a (see FIG. 4) of the diffuser body 2 and an inner wall surface 4a of a cover body 4 described later in order to prevent condensation due to a temperature difference between the air flowing inside the box-shaped diffuser 1 and the air outside the box-shaped diffuser 1. The first and second heat insulating materials 11 and 12 will be described later.

[0013] As shown in Fig. 2, the inspection hatch 3 is formed so that the opening shape is rectangular. More specifically, an inner flange 13 is provided on the side portion 6 of the diffuser body 2 having the inspection hatch 3 so as to become part of the outer surface of the diffuser body 2, as shown in Fig. 4. A tip portion 13a on the opening side of the inner flange 13 is bent toward the inside of the diffuser body 2. Furthermore, the tip portion 13a of the inner flange 13 constitutes the opening edge of the inspection hatch 3, and is formed in a square tube shape. That is, the inspection hatch 3 is formed to be surrounded by the inner flange 13 provided on the diffuser body 2.

[0014] The first insulating material 11 covers the inner wall surface (see FIG. 4) of the diffuser body 2, and is provided on the opposite side of the tip 13a of the inner flange 13 from the inspection hatch 3. The first insulating material 11 may be, for example, glass wool covered with a covering material. As shown in Fig. 2, a communication board 14 for controlling the damper is provided in a position inside the diffuser body 2 that is visible from the inspection hatch 3. The communication board 14 is connected by a cable to a damper control controller (not shown) installed on the surface of the housing 4, and is configured to be connected by BLE communication to a user's communication terminal (not shown). A signal to change the operating state of the damper is sent from the user's communication terminal to the communication board 14 by BLE communication, and the damper control controller controls the opening and closing operation of the damper.

[0015] The lid 4 is formed in a shape that covers the side portion 6 of the diffuser body 2 having the inspection hatch 3, and has a rectangular main plate portion 15 that faces the above-mentioned inner flange 13, and a frame portion 16 that is formed perpendicular to the main plate portion 15 on the outer edge of the main plate portion 15. The lid 4 is also formed of a metal plate, like the diffuser body 2. The inspection hatch 3 is closed by attaching the lid 4 to the diffuser body 2. The inspection hatch 3 is opened by removing the lid 4 from the diffuser body 2.

[0016] 4, the main plate 15 is attached to the diffuser body 2 by fixing screws 18 with a second insulating material 12 and a gasket 17, which will be described later, fixed to the inner wall surface 4a corresponding to the inspection hatch 3. The fixing screws 18 penetrate the main plate 15 and are screwed into nut members 19 provided on the inner flange 13. The lid fastening structure consisting of the fixing screws 18 and the nut members 19 is arranged at four locations on the top, bottom, left and right of the lid 4 and the inner flange 13 so that the four sides of the rectangular lid 4 are fixed to the inner flange 13.

[0017] The second insulating material 12 can be made of glass wool covered with a covering material, similar to the first insulating material 11, and covers the inner wall surface 4a of the cover body 4 corresponding to the inspection hatch 3. The second insulating material 12 is formed to a size that is spaced apart from the opening edge of the inspection hatch 3 (the tip portion 13a of the inner flange 13) by a predetermined distance D. The second insulating material 12 is formed so that it is inserted into the diffuser body 2 from the inspection hatch 3 with the cover body 4 attached to the diffuser body 2. As shown in FIG. 3, the second insulating material 12 according to this embodiment is formed in a plate shape that is rectangular when viewed from the front and has a thickness longer than the tip portion 13a of the inner flange 13, and is held on the cover body 4 by a pin member 21 with a plurality of pressing plates. The pin member 21 has a pressing plate 21a at one end and penetrates the second insulating material 12. The other end of the pin member 21 is welded perpendicularly to the inner wall surface 4a of the cover body 4.

[0018] A gasket 17 is adhered to the portion of the inner wall surface 4a of the cover 4 surrounding the second insulating material 12. The gasket 17 is formed in a frame shape surrounding the second insulating material 12 from a material having insulating properties and flexibility, such as a semi-closed cell foam of synthetic rubber. The gasket 17 in this embodiment is configured by arranging four strip-shaped divided pieces 17a with a rectangular cross section along the frame portion 16 of the cover 4. The inner surface 17b of this frame-shaped gasket 17 is in close contact with the upper, lower, left and right outer surfaces 12a of the second insulating material 12 without any gaps. A through hole 22 is formed in the gasket 17 at a portion where the fixing screw 18 passes.

[0019] In the box-shaped diffuser 1 configured in this manner, when the cover 4 is attached to the diffuser body 2, the gasket 17 is sandwiched between the inner wall surface 4a of the cover 4 and the inner flange 13. As a result, the space that is the gap D between the second insulating material 12 and the tip 13a of the inner flange 13 is filled and insulated by the gasket 17.

[0020] When inspecting or maintaining the damper 5 in the diffuser body 2 or the communication board 14 for controlling the damper, the cover 4 is removed from the diffuser body 2. Since a space of distance D is formed between the diffuser body 2 and the lid 4, i.e., between the second insulating material 12 and the tip 13a of the inner flange 13, the second insulating material 12 is unlikely to come into contact with the inner flange 13 when the lid 4 is removed from the diffuser body 2. Therefore, no load is applied to the second insulating material 12 even if the lid 4 is repeatedly opened and closed. Therefore, according to this embodiment, it is possible to provide a box-shaped diffuser that can prevent the insulating material from being damaged or falling off while maintaining a high insulating effect.

[0021] Inspection hatch 3 in this embodiment is formed and surrounded by inner flange 13 provided on diffuser body 2. In addition, gasket 17 is sandwiched between inner flange 13 and cover 4. For this reason, by bringing gasket 17 into contact with the entire area of ​​inner flange 13, it is possible to further improve sealing properties and heat insulation.

[0022] The second insulating material 12 in this embodiment is held to the lid 4 by a pin member 21 with a pressure plate that penetrates the second insulating material 12. This, combined with the fact that the second insulating material 12 is unlikely to come into contact with the opening edge of the inspection hatch 3, allows the second insulating material 12 to be firmly attached to the lid 4 so that it will not come off. [Explanation of symbols]

[0023] 1...box-shaped diffuser, 2...diffuser body, 3...inspection hatch, 4...lid body, 11...first insulating material, 12...second insulating material, 13...inner flange, 17...gasket, 21...pin member with pressure plate.

Claims

1. A diffuser body formed in a box shape having an inspection port; a cover body that is detachably attached to the diffuser body, the cover body being attached to the diffuser body to close the inspection hatch and being detached from the diffuser body to open the inspection hatch; a first insulating material covering an inner wall surface of the diffuser body; A second heat insulating material is provided to cover an inner wall surface corresponding to the inspection hatch of the lid body, An inner flange is integrally provided on a side portion of the diffuser body having the inspection opening so as to become a part of an outer surface of the diffuser body, A tip portion of the inner flange on an opening side is bent toward the inside of the diffuser body to form a square tube shape, The inspection hatch is formed by being surrounded by the inner flange, The first heat insulating material is provided on the opposite side of the access hatch from the tip of the inner flange, the second insulating material is formed to a size such that it is spaced apart from the opening edge of the inspection hatch at a predetermined interval, and is formed to be inserted into the diffuser body through the inspection hatch in a state in which the lid body is attached to the diffuser body, and is attached to the lid body so that an outer surface of the second insulating material is exposed except for a portion of the second insulating material that contacts an inner wall surface of the lid body corresponding to the inspection hatch; A gasket having thermal insulation properties is provided in a portion surrounding the second insulation material on an inner wall surface of the cover body corresponding to the inspection hatch so as to be in close contact with the second insulation material, The lid body has a rectangular main plate portion facing the inner flange, The second insulating material and the gasket are fixed to an inner wall surface of the main plate portion facing the inspection hatch, the main plate portion is attached to the diffuser body by a fixing screw in a state in which the second insulating material and the gasket are fixed to an inner wall surface corresponding to the inspection hatch, The fixing screw is screwed into a nut member provided on the inner flange while passing through the main plate portion and through a through hole of the gasket, a fixing screw for fixing the main plate portion to the diffuser body, the fixing screw being used to fix the gasket to the inner flange and the main plate portion of the lid body;

2. 2. The box-shaped diffuser of claim 1, A box-shaped diffuser, characterized in that the second insulating material is held to the lid by a pin member with a pressure plate that penetrates the second insulating material.

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