Joint member for air-conditioning duct and air-conditioning duct using the same

Abstract

Regarding an air conditioning duct formed by joining rectangular duct members made mainly of rigid foam plastic in the longitudinal direction, a joining member is provided that can ensure high airtightness and has high workability at the construction site. 【Solution means】 It is composed of a pair of gasket members 31 having an L shape, a pair of flange members 32 having an L shape, and a fixing member 33 for fixing them. The gasket members are attached facing each other to the respective ends of two duct members 2A and 2B connected in the longitudinal direction. These pair of gasket members are abutted and joined. The flange members are attached in contact with a part of the inner surface of the gasket member and a part of the outer surface of the duct member. A pair of gasket members and a pair of flange members attached to the respective ends of the two duct members are fixed by the fixing member, whereby the two duct members are joined in the longitudinal direction.

Description

Technical Field

[0001] The present invention relates to a joining member for arranging a plurality of rectangular duct members in the longitudinal direction and connecting and joining them to form a set of rectangular air-conditioning ducts, and an air-conditioning duct using this joining member.

Background Art

[0002] Conventionally, air-conditioning ducts provided for transporting cooled or heated gas mainly for the purpose of air-conditioning inside a building have been known. As air-conditioning ducts, steel plate ducts have been known for a long time.

[0003] In this steel plate duct, individual duct members (hereinafter, also simply referred to as "duct members" in this specification) that constitute a set of air-conditioning ducts by connecting and joining a plurality of them are assembled at a factory, and the assembled duct members are transported from the factory to a construction site, and the duct members are connected and joined at the construction site to form a set of air-conditioning ducts. That is, since the duct members are assembled into a pipeline state during transportation, the voids inside the pipe are included in the volume of the object to be transported, so there is a problem of bulkiness. Due to this bulkiness, the quantity of duct members that can be transported at one time is limited, so there is a problem of poor transportation efficiency. Further, due to this poor transportation efficiency, the transportation cost by a truck or the like becomes high, and furthermore, there is a problem that the amount of carbon dioxide emissions also increases.

[0004] In order to solve the above problems, a method of assembling plate-shaped panels at a construction site to form duct members is known. Patent Document 1 discloses a panel for an air-conditioning duct that can form an air-conditioning duct (duct member) by assembling multiple sheets. The panel has a multi-layer structure in which one core material is sandwiched between two facing materials. The material of the core material is a rigid foamed plastic mainly composed of rigid polyurethane foam. The outer facing material located on the outer surface side of the core material is a thin aluminum plate with embossing, and the inner facing material located on the inner surface side of the core material is a thin aluminum plate coated with an epoxy resin. This is a panel for an air-conditioning duct characterized by the above.

[0005] In the technology according to Patent Document 1, since it is in the form of a plate-like panel during transportation, it has the advantages of not taking up volume and not being bulky, and having good transportation efficiency. As a result, it can also contribute to suppressing transportation costs and reducing carbon dioxide emissions.

[0006] On the other hand, high airtightness is required for air-conditioning ducts. In the work of connecting and joining duct members formed by assembling panels as described in Patent Document 1, that is, in the work of joining rectangular duct members mainly composed of rigid foamed plastic in the longitudinal direction to form an air-conditioning duct, ensuring airtightness has become a problem. Also, for the work at the construction site, high workability (such as being easy and quick to construct, etc.) is also required. Patent Document 1 had a problem that there was no favorable proposal regarding ensuring the above-mentioned airtightness and improving workability.

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0008] Therefore, an object of the present invention is to provide a joint member that can ensure high airtightness and has high workability at the construction site for an air conditioning duct formed by joining rectangular duct members made of rigid foam plastic in the longitudinal direction. Another object is to provide an air conditioning duct using this joint member.

Means for Solving the Problems

[0009] The above object of the present invention is solved by the following configuration.

[0010] 1. A member for forming an air conditioning duct by connecting and joining rectangular duct members made of rigid foam plastic in the longitudinal direction, which is composed of a pair of gasket members having an L shape, a pair of flange members also having an L shape, and fixing members for fixing them, wherein the gasket members are attached opposite to each other at the respective ends of two duct members connected in the longitudinal direction, and these pair of gasket members are in contact and joined, and the flange members are attached in contact with a part of the inner surface of the gasket members and a part of the outer surface of the duct members, and the pair of gasket members and the pair of flange members attached to the respective ends of the two duct members are fixed by the fixing members, whereby the two duct members are joined in the longitudinal direction. A joint member for an air conditioning duct, characterized by this configuration.

[0011] 2. The joint member according to claim 1, characterized in that a part of the inner surface of the gasket member is attached in contact with a part of the inner surface of the duct member.

[0012] 3. The joint member according to claim 1 or 2, characterized in that the gasket member is made of hard synthetic rubber.

[0013] 4. The fixing member is composed of bolts and nuts, A joint member according to claim 1 or 2, characterized in that it is configured to be inserted through openings provided in a pair of gasket members attached to respective ends of two duct members and a pair of flange members, and fixed by tightening bolts and nuts.

[0014] 5. A joint member according to claim 1 or 2, characterized in that a clip member for sandwiching a pair of gasket members and a pair of flange members attached to respective ends of two duct members is provided, thereby assisting in joining and fixing the two duct members.

[0015] 6. A set of air-conditioning ducts formed by connecting and joining square duct members mainly made of rigid foam plastic, having a joint member for joining two said duct members in the longitudinal direction, wherein the joint member is composed of a pair of gasket members having an L-shaped configuration, a pair of flange members also having an L-shaped configuration, and a fixing member for fixing them, wherein the gasket members are attached opposite to respective ends of two duct members connected in the longitudinal direction, and these pair of gasket members are abutted and joined, wherein the flange members are attached in contact with a part of the inner surface of the gasket members and a part of the outer surface of the duct members, the pair of gasket members and the pair of flange members attached to respective ends of two duct members are fixed by the fixing member, whereby the two duct members are joined in the longitudinal direction, characterized in that the joining of these duct members is repeated a plurality of times to form a set of air-conditioning ducts.

[0016] 7. The air-conditioning duct according to claim 6, characterized in that a part of the inner surface of the gasket member is attached in contact with a part of the inner surface of the duct member.

[0017] 8. The air-conditioning duct according to claim 6 or 7, characterized in that the gasket member is made of hard synthetic rubber.

[0018] 9. The fixing member is composed of a bolt and a nut, and is inserted through openings provided in a pair of gasket members attached to respective ends of two duct members and a pair of flange members, and is fixed by tightening the bolt and the nut. The air-conditioning duct according to claim 6 or 7, characterized in that it has such a configuration.

[0019] 10. A clip member is provided for sandwiching a pair of gasket members attached to respective ends of two duct members and a pair of flange members, thereby assisting in joining and fixing the two duct members. The air-conditioning duct according to claim 6 or 7, characterized in that it has such a configuration.

Advantages of the Invention

[0020] According to the device shown in claims 1 and 6, gasket members are attached to respective ends of one duct member and the other duct member to be joined, and these gasket members are arranged in pairs and oppositely attached. Therefore, by the surfaces of these paired gasket members coming into contact, airtightness at the joint portion (connection / joining portion) of the two duct members can be ensured. Further, since the flange member is configured to be attached in contact with a part of the inner surface of the gasket member and a part of the outer surface of the duct member, the gasket members attached to one duct member and the other duct member are sandwiched from both sides by a pair of flange members. In this state, by the pair of gasket members and the pair of flange members being fixed by the fixing member, the two duct members are connected / joined in the longitudinal direction, the fixability at the joint portion of the two duct members is enhanced, and airtightness can be ensured. Moreover, since it is a simple process of fixing a pair of gasket members and a pair of flange members with a fixing member, construction can be carried out simply and quickly, that is, workability can be obtained.

[0021] According to the invention shown in claims 2 and 7, since a part of the inner surface of the gasket member is attached in contact with a part of the inner surface of the duct member, for example, the contacting part can be fixed by simple means such as adhesion. Furthermore, since the contacting surfaces of the paired gasket members extend from the inside to the outside of the duct member, the area of the surface for ensuring airtightness can be increased, and the airtightness as an air-conditioning duct can also be improved.

[0022] According to the invention shown in claims 3 and 8, by adopting a hard synthetic rubber as the material of the gasket member, the airtightness can be further improved.

[0023] According to the invention shown in claims 4 and 9, a pair of gasket members and a pair of flange members attached in a sandwiching manner are tightened by bolts and nuts, which enables simple and rapid construction, and furthermore, high fixity can be achieved.

[0024] According to the invention shown in claims 5 and 10, a clip member for sandwiching a pair of gasket members and a pair of flange members is provided, and since this is a configuration for assisting the joining and fixing of two duct members, the fixity can be enhanced by simple and rapid construction.

Brief Description of the Drawings

[0025]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Embodiment for Carrying Out the Invention

[0026] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0027] As shown in FIG. 1, an air-conditioning duct (hereinafter, also simply referred to as "air-conditioning duct") 1 according to the present invention is configured by connecting and joining a plurality of duct members 2. At the location where the duct members 2 are connected and joined, a joining member (hereinafter, also simply referred to as "joining member") 3 according to the present invention is installed, thereby ensuring airtightness. Note that the joining member 3 shown in this FIG. 1 is drawn in a schematic manner and does not accurately represent its configuration.

[0028] In this specification, the duct member 2 refers to an individual cylindrical member (pipe line) that constitutes the air-conditioning duct 1, and by connecting and joining these duct members 2, a set of air-conditioning ducts 1 is formed. The duct member 2 in the present invention is a rectangular cylindrical member. There is no limitation on the specific shape and dimensions, and they are set in consideration of the flow rate required for the air-conditioning duct 1 and the like.

[0029] The duct member 2 is formed by assembling a plate-like panel 23 mainly made of rigid foam plastic. As the rigid foam plastic used, it is preferable to use rigid polyurethane foam, and more specifically, it is preferable to use polyisocyanurate foam. Also, by sandwiching the front and back surfaces with an aluminum thin plate or the like using this rigid foam plastic as a core material, impact resistance, chemical resistance, durability, etc. can be enhanced. The assembly means and the like will be described in detail later.

[0030] FIG. 2 is an enlarged view showing the portion (the portion indicated by reference numeral M in FIG. 1) where two adjacent duct members 2 (2A and 2B) are connected and joined, and is a schematic cross-sectional view showing an embodiment of the joining member 3.

[0031] As shown in FIG. 2, the joining member 3 is composed of a gasket member 31, a flange member 32, and a fixing member 33. Note that the cross-sectional line for the fixing member 33 is omitted.

[0032] First, the gasket member 31 will be described. The gasket member 31 is attached to each end of one of the duct members 2A to be joined and the other duct member 2B, and these gasket members 31 are configured to be attached in pairs facing each other. By the outer surfaces 312 of these gasket members 31 that are attached facing each other coming into contact and being joined, airtightness and liquid tightness at the connection and joining portion are ensured.

[0033] Regarding the means for attaching the gasket member 31 to the duct member 2, a part of the inner surface 311 of the gasket member 31 is configured to abut against a part of the inner surface 21 of the duct member 2 for attachment (see FIG. 7 described later). There is no limitation on the attachment means, and publicly known and commonly used attachment means can be adopted. For example, means of attaching using an adhesive can be exemplified.

[0034] The gasket member 31 has an L-shaped cross-section as shown in FIG. 2. The material forming the gasket member 31 is preferably a hard synthetic rubber, and in particular, butyl rubber is preferably adopted. By adopting these materials, airtightness and liquid tightness can be ensured, and furthermore, effects such as durability, weather resistance, heat resistance, and chemical resistance can be exerted.

[0035] Next, the flange member 32 will be described. The flange member 32 is configured to be attached in contact with a part of the inner surface 311 of the gasket member and a part of the outer surface 22 of the duct member (see FIG. 7 described later). By attaching this flange member 32, the fixability between the duct member 2 and the gasket member 3 can be enhanced. Also, since the gasket member 3 can be fixed so as to be sandwiched from both sides together with the fixing member 33 described later, the fixability at the joint of the two gasket members 3, that is, the connecting and joining portion between one duct member 2A and the other duct member 2B can be enhanced, and the airtightness and liquid tightness at this portion can be ensured.

[0036] There is no limitation on the means for attaching the flange member 32 to the duct member 2, and publicly known and commonly used attachment means can be adopted. For example, a means of adhering the outer surface 322 of the flange member and the outer surface 22 of the duct member using an adhesive can be adopted. Also, for example, a means of providing spike-shaped protrusions (not shown) on the outer surface 322 of the flange member and piercing these protrusions into the outer surface 22 of the duct member for fixation can be adopted. Since the duct member 22 used in the present invention is made of rigid foam plastic, it is possible to perform piercing fixation with spike-shaped protrusions.

[0037] As shown in FIG. 2, the flange member 32 has an L-shaped cross section. There is no limitation on the material forming the flange member 32, and publicly known and commonly used materials can be adopted without special restrictions. For example, it is preferable to adopt a metal such as aluminum. If it is aluminum, since it is lightweight, it can contribute to suppressing the weight of the entire air-conditioning duct 1, and since it has excellent corrosion resistance, it can also contribute to improving the durability of the entire air-conditioning duct 1.

[0038] The embodiment shown in FIG. 2 and the above description are explanations of the means for attaching the gasket member 31 and the flange member 32 to one side of the duct member 2. However, as shown in FIG. 3, the gasket member 31 and the flange member 32 are sequentially attached to all four sides of the duct member 2. From this, it is preferable that the lengths of the gasket member 31 and the flange member 32 match the inner dimensions of the duct member.

[0039] Next, the fixing member 33 will be described. The fixing member 33 is a member for fixing a pair of gasket members 31 and a pair of flange members 32 attached to the respective ends of the two duct members (2A and 2B). By fixing these, the connection / joint portion between one duct member 2A and the other duct member 2B can be fixed, ensuring the firm fixation of this connection / joint portion and securing the airtightness and liquid tightness at this portion.

[0040] In the above-described manner, with the gasket members 31 and the flange members 32 attached to each of the one duct member 2A and the other duct member 2B which are adjacent duct members 2, the outer surfaces 311 of the gasket members are brought into contact with each other. In this state, the fixing member 33 is attached to fix the connection / joint portion.

[0041] The fixing member 33 can be constituted by a bolt 331 and a nut 332. A series of openings are provided in a pair of gasket members 31 and a pair of flange members 32 attached to the respective ends of the two duct members (2A and 2B). By inserting the bolt 331 through these openings and tightening with the nut 332, the connection / joint portion can be securely fixed in a simple manner (see FIG. 7 described later).

[0042] In addition to the fixing member 33, the use of a clip member 34 that sandwiches a pair of gasket members 31 and a pair of flange members 32 can further enhance the fixity of the connection / joint portion. The clip member 34 will be described later.

[0043] <Regarding the assembly of the duct member 2> The assembly means of the duct member 2 will be described with reference to FIGS. 4 to 6. As shown in FIG. 4, the duct member 2 is formed by assembling a plate-shaped panel 23 into a cylindrical shape (square cylindrical shape). In the embodiment described in FIG. 4, a V-shaped groove portion 231 is provided in one panel 23, and the duct member 2 is formed by valley-folding the V-shaped groove portion 231 as a fold line. In addition to this, a plurality of panels 23 may be used, a notch portion 232 may be provided at the end, and these may be assembled to form a square duct member 2. As an example thereof, FIG. 5 is shown. FIG. 5 is a schematic explanatory view showing a state in which the duct member 2 is formed by assembling the panel 23 into a cylindrical shape as in FIG. 4. This FIG. 5 is an example of assembling using four previously prepared panels 23. Notch portions 232 are provided at the ends of the panels 23, and the duct member 2 is formed by joining and adhering these. Although FIG. 5 shows an example using four panels 23, two or three panels 23 may be used and combined with the example of valley-folding the V-shaped groove portion 231 shown in FIG. 4 as a fold line to form a cylindrical duct member 2.

[0044] FIG. 6 is a diagram showing a procedure for forming the duct member 2 using the panel 23. For easy understanding of the explanation, the means for joining two sides is illustrated, and following this example, a square duct member 2 composed of four or more sides is formed.

[0045] As shown in FIG. 6(a), the ends of each panel 23 are cut at 45 degrees to form notch portions 232. Next, these notch portions 232 are adhered. Although not limited to the adhering means, means using a known and publicly available adhesive can be cited.

[0046] Next, as shown in FIG. 6(b), the inside (inner corner) of the corner formed by adhering two panels 23 is caulked. Although not limited to the caulking means, means adopting a known and publicly available caulking agent can be employed.

[0047] Next, as shown in FIG. 6(c), an L-shaped clip 234 is attached to the outer side (outer corner) of the corner formed by adhering two panels 23. There is no limitation on the specific form of the L-shaped clip portion 234, but it is in a form that matches the angle of the corner formed by adhering two panels 23. For example, a spike-shaped protrusion can be provided on the inner side of the L-shaped clip portion 234, and a means of fixing by piercing this protrusion into the outer surface of the panel 23 can be adopted. There is no limitation on the material forming the L-shaped clip portion 234, but for example, it is preferable to adopt a metal such as aluminum.

[0048] Finally, as shown in FIG. 6(d), a tape (tape portion 235) is affixed from above the above-described L-shaped clip portion 234 to prevent the L-shaped clip portion 234 from falling off and to ensure airtightness and liquid tightness at the corner portion.

[0049] Following the operations (a) to (d) in FIG. 6, a rectangular duct member 2 composed of four or more sides can be formed.

[0050] <Regarding the assembly of the air-conditioning duct 2> The assembly of the air-conditioning duct 2, that is, the connecting and joining means of the duct member 2, will be described with reference to FIG. 7. FIG. 7 is a diagram showing the procedure for connecting and joining one adjacent duct member 2A and the other duct member 2B. In this manner, a plurality of duct members 2 can be connected and joined to form a set of air-conditioning ducts 1.

[0051] As shown in FIG. 7(a), first, a gasket member 31 is attached to the duct member 2. Specifically, a part of the inner surface 311 of the gasket member 31 is brought into surface contact with a part of the inner surface 21 that contacts the inside of the duct member 2, and this is adhered and fixed. There is no limitation on the adhering means, and an adhesive, a double-sided tape, or the like can be used.

[0052] Next, as shown in FIG. 7(b), a flange member 32 is attached to the adhered duct member 2 and gasket member 31. Specifically, a part of the outer surface 322 of the flange member 32 is brought into surface contact with a part of the outer surface 22 of the duct member 2, and further, a part of the outer surface 322 of the flange member 32 is brought into surface contact with a part of the inner surface 311 of the gasket member 31, and these are fixed.

[0053] There is no limitation on the fixing means, but for the duct member 2 and the flange member 32, a fixing means by adhesion can be exemplified. Further, a means of providing spike-like protrusions (not shown) on the outer surface 322 of the flange member and piercing these protrusions into the outer surface 22 of the duct member for fixing can be exemplified. For the gasket member 31 and the flange member 32, they can be fixed by clamping and narrowing using a fixing member 33 described later.

[0054] Next, as shown in FIG. 7(c), in a state where a gasket member 31 and a flange member 32 are attached to each of one duct member 2A and the other duct member 2B, the outer surfaces 312 of one gasket member 31 and the other gasket member 31 are brought into surface contact with each other. In this state, they are fixed by sandwiching from both sides with a fixing member 33 composed of a bolt 331 and a nut 332.

[0055] Finally, as shown in FIG. 7(d), a clip member 34 is attached to the gasket member 31 and the flange member 32 attached to one duct member 2A and the other duct member 2B. Although there is no limitation on the specific form of the clip member 34, a form common to a flange holding metal fitting used in the common plate flange method in an air-conditioning duct made of a steel plate can be exemplified. Note that the description of the fixing member 33 is omitted in FIG. 7(d). The clip member 34 can be used in a part where the fixing member 33 is not attached, and in a part where the fixing member 33 is attached, the clip member 34 can also be used to sandwich including the fixing member 33.

Explanation of Reference Numerals

[0056] 1 Air conditioning duct 2 Duct member 21 Inner surface 22 Outer surface 23 Panel 231 V-groove part 232 Notch part 233 Caulking part 234 L-shaped clip part 235 Tape part 2A One duct member 2B The other duct member 3 Joining member 31 Gasket member 311 Inner surface 312 Outer surface 32 Flange member 321 Inner surface 322 Outer surface 33 Fixing member 331 Bolt 332 Nut 34 Clip member M Enlarged part H Hanging bracket T Ceiling

Claims

1. A member for forming an air-conditioning duct by connecting and joining rectangular duct members mainly made of rigid foam plastic in the longitudinal direction, Composed of a pair of gasket members having an L shape, a pair of flange members also having an L shape, and a fixing member for fixing them, The gasket members are attached facing each other at the respective ends of two duct members connected in the longitudinal direction, and the pair of gasket members are in contact and joined, The flange member is configured to be attached in contact with a part of the inner surface of the gasket member and a part of the outer surface of the duct member, The pair of gasket members and the pair of flange members attached to the respective ends of the two duct members are fixed by the fixing member, whereby the two duct members are longitudinally

2. The joining member according to claim 1, wherein a part of the inner surface of the gasket member is attached in contact with a part of the inner surface of the duct member.

3. The joining member according to claim 1 or 2, wherein the gasket member is made of hard synthetic rubber.

4. The fixing member consists of bolts and nuts, The joining member according to claim 1 or 2, wherein it is inserted through openings provided in a pair of gasket members and a pair of flange members attached to the respective ends of the two duct members, and is fixed by tightening the bolts and nuts.

5. The joining member according to claim 1 or 2, characterized in that a clip member is provided for sandwiching a pair of gasket members and a pair of flange members attached to the respective ends of the two duct members, thereby assisting in joining and fixing the two duct members.

6. An air-conditioning duct set formed by connecting and joining rectangular duct members mainly made of rigid foam plastic, Having a joining member for joining the two duct members in the longitudinal direction, The joining member is composed of a pair of gasket members having an L shape, a pair of flange members also having an L shape, and a fixing member for fixing them, The gasket members are attached facing each other at the respective ends of two duct members connected in the longitudinal direction, and the pair of gasket members are in contact and joined, The flange member is configured to be attached in contact with a part of the inner surface of the gasket member and a part of the outer surface of the duct member. The pair of gasket members and the pair of flange members attached to the respective ends of the two duct members are fixed by the fixing member, whereby the two duct members are joined in the longitudinal direction. An air-conditioning duct, characterized in that the joining of the duct members is repeated a plurality of times to form a set of air-conditioning ducts.

7. The air-conditioning duct according to claim 6, characterized in that a part of the inner surface of the gasket member is attached in contact with a part of the inner surface of the duct member.

8. The air-conditioning duct according to claim 6 or 7, characterized in that the gasket member is made of hard synthetic rubber.

9. The fixing member consists of a bolt and a nut. The air-conditioning duct according to claim 6 or 7, characterized in that it is inserted through openings provided in a pair of gasket members and a pair of flange members attached to the respective ends of the two duct members, and is fixed by tightening the bolt and the nut.

10. The air-conditioning duct according to claim 6 or 7, characterized in that a clip member is provided for sandwiching a pair of gasket members and a pair of flange members attached to the respective ends of the two duct members, thereby assisting in joining and fixing the two duct members.

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