JP3752303B2 - Duct curved portion heat insulating material, duct with heat insulating material installed, and construction method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is formed by joining the divided duct pieces adjacent to each other along a curved line, and applying the heat insulating material and the heat insulating material applied to the outer periphery of the duct body applied to the air conditioner or the like. It is related with a duct and its construction method.
[0002]
[Prior art]
A duct in which a heat insulating material generally used in the past is applied is formed by the following method. As shown in FIG. 16, the duct main body 60 made of iron or the like is formed by joining, for example, four pieces of duct pieces 60A, 60B, 60C, 60D adjacent to each other to form a curved portion. On each duct piece 60A, etc., the heat insulating material divided pieces 1A ', 1B', 1C ', 1D' (FIG. 17) having dimensions corresponding to the developed dimensions are attached and applied to the outer surface thereof.
[0003]
The conventional heat insulating material is made of a material such as glass wool, and as shown in FIG. 17, each of the divided pieces 1A ', 1B', 1C ', 1D' is formed by cutting a rectangular heat insulating material with a substantially sine curve cutting line 40. Consists of things. As shown in the figure, each of the divided pieces 1A ', 1B', 1C ', 1D' has a widest portion at the center and a width of the narrowest portion at both ends. In order to attach the divided pieces 1A ′ and the like to the duct body 60, first, the duct pieces 60A and the like corresponding to the divided pieces 1A ′ and the like are set, and the widest portions are aligned with the outermost sides of the duct pieces 60A and the like. Put the narrowest part on the inside and attach. As described above, a duct is formed in which the divided pieces 1A ′ and the like are attached to the duct piece 60 side without any gaps and the heat insulating material is applied.
[0004]
[Problems to be solved by the invention]
When the ducts are formed by attaching the divided pieces 1A 'and the like to the duct pieces 60A and the like of the duct body 60, in order to prevent a gap from being formed between the adjacent divided pieces 1A' and 1B 'and the like, FIG. It is necessary to accurately cut the divided pieces 1A ′ and the like along the cutting line 40 shown. However, this cutting operation requires skill, and there is a problem that anyone cannot easily perform. Further, as shown in FIG. 17, when the conventional divided piece 1A ′ or the like is cut, the end material 8 is always generated. This end material 8 is difficult to be used elsewhere, and becomes waste. Even if the cutting can be accurately performed along the cutting line 40, the divided pieces 1A 'have a thickness, and a slight gap is inevitably generated between the adjacent divided pieces, and gap processing is essential. There is a problem. In the prior art, it was necessary to fill this gap with glass wool.
[0005]
The present invention solves the above-mentioned problems, and the heat insulating material can be arranged almost without gaps in the duct body, improving the heat insulating property, generating almost no scrap material, A duct bent heat insulating material and a duct with a heat insulating material and a construction method capable of eliminating processing, eliminating material waste, reducing product cost, and easily cutting without requiring special skill. The purpose is to provide.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention comprises a laminate of a heat insulating member and a cover material adhered to at least one surface thereof, and has a duct diameter (D), a duct bending radius (R), and a bending portion angle. Dimensions of the back part and the belly part of the duct divided by the substantially sinusoidal cut line specified from the value of the range (θ), the number of divisions (n), and the thickness (t) of the laminate. And the laminated material having the vertical and horizontal dimensions specified from each value by a substantially sine curve-shaped cutting line obtained from the correction value, and the cutting lines are adjacent to each other. The wide portions and the narrow portions of the respective divided pieces correspond alternately, and at least the material constitutes a duct curved portion heat insulating material in which no end material based on cutting is formed.
More specifically, the end face on the cutting side of the divided piece made of a material having different width dimensions along the longitudinal direction by cutting with the substantially sine curve is inclined from the vertical line from the narrowest part to the widest part of the width dimension. It gradually changes from the (−) inclined surface of the inclination angle X inclined in the direction of decreasing angle toward the (+) inclined surface of the inclination angle X inclined in the direction of increasing the inclination angle from the vertical line to the intermediate position. A vertical plane is formed.
Further, the inclination angle X of the (+) and (−) inclined surfaces is θ / 2 (n−1), and the heat retaining member is formed by zigzag folding glass wool using an adhesive. The cover material is paper or cloth.
Further, in the case of cutting so that the narrowest part and the widest part of the split piece are alternately located in the central part of the material, the split piece in which the narrowest part is located in the central part of the raw material is the narrowest part. Further, the widest portions are connected to each other by cutting, and the widest portions of all the divided pieces are fixed with a connecting material.
Further, the laminate is characterized in that only one surface of the cover material is left uncut.
Further, the material is constituted by a plurality of divided members.
The heat insulating material is attached to the outer surface, and is a duct having a duct diameter (D), a duct bending radius (R), and a curved portion angle range (θ). The heat insulating material includes a heat insulating member and at least one surface thereof. A laminated body made of a cover material adhered to the above-mentioned material has a duct diameter (D), a duct bending radius (R), a curved portion angle range (θ), a division number (n), and a thickness (t) of the laminated body. Divided completely by a substantially sine curve-shaped cutting line specified from the values, or by a substantially sine-curved cutting line obtained from the dimensions and correction values of the back and abdomen of the n-divided duct Only one piece or one side of the cover material is left uncut, and the divided piece is made to correspond to the divided piece and the duct part corresponding to the outermost part of the duct as necessary. It constitutes a duct constructed with a heat insulating material characterized by being deposited. is there.
Further, a laminate in which a covering material is stacked on at least one surface of the heat retaining member on the outer periphery of the duct having a duct diameter (D), a duct bending radius (R), and a curved portion angle range (θ) is the duct diameter (D), The duct bending radius (R), the bending portion angle range (θ), the number of divisions (n), the thickness of the laminated body (t), or a substantially sine curve-shaped cutting line, or the n-divided duct Corresponding to the duct that is left uncut into only the split piece or the single-sided cover material that has been completely cut by the cutting line of the approximate sine curve shape obtained from the dimensions and correction values of the back and belly parts A method of constructing a duct, and a first procedure for preparing a laminate having vertical and horizontal dimensions specified from the above values, and displaying the sine curve cutting line on one side of the laminate The second step to the widest and the widest part from the narrowest part of each heat insulating material split piece And cutting along the cutting line while changing the inclination angle X of the cut surface from (−) θ / 2 (n−1) to (+) θ / 2 (n−1). And a step of attaching the divided piece cut as necessary to the duct part corresponding to the divided piece with the wide part corresponding to the outermost side of the duct and the narrow part corresponding to the innermost side. The construction method of the duct which constructed the heat insulating material characterized by performing these procedures.
In addition, the cutting in the third procedure is performed while leaving only the surface material of one side of the heat insulating material in an uncut state, and cutting an uncut portion that has been cut out in the attaching in the fourth procedure. It is characterized by the construction method of the duct in which the heat insulating material is constructed.
[0007]
Abbreviation specified by duct diameter (D), duct bending radius (R), curved portion angle range (θ), number of divisions (n), thickness of heat insulating material (t) attached to duct main body, etc. The sine curve cutting line, or the substantially sine curve cutting line obtained from the dimensions and correction values of the back and belly parts of the n-divided duct alternate between the wide and narrow parts of the adjacent divided pieces. By attaching the divided pieces cut along the cutting line to the outer periphery of the duct body, a duct in which a heat insulating material with almost no gap is applied can be obtained. Further, the cut surface of the divided piece is gradually changed from the (−) inclination angle of angle X = −θ / 2 (n−1) to the (+) inclination angle of X = θ / 2 (n−1). By doing so, there is almost no gap between the adjacent divided pieces. Further, since the adjacent divided pieces are formed by alternately corresponding the wide portions and the narrow portions, no end material is generated.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a duct in which a duct bending portion heat insulating material and a heat insulating material according to the present invention are constructed and a construction method will be described in detail with reference to the drawings.
FIG. 1 shows a heat insulating material 1 used in the present invention. The heat insulating material 1 includes a heat insulating member 2 and a laminate in which a cover material 3 is attached to at least one surface thereof. The heat insulating material 1 is divided into a plurality of divided pieces 1A, 1B, 1C, 1D by a cutting line 4, or only the heat insulating member 2 is cut by the cutting line 4 while leaving only the portion of the cover material 3. It is produced in an uncut state, and is cut into uncut portions at the time of use and used as divided pieces 1A or the like. Note that the method and shape of the cutting line 4 will be described later.
[0009]
The heat retaining member 2 is made of, for example, glass wool that is folded into a zigzag shape using an adhesive and formed into a plate shape. The heat retaining member 2 can produce a long product, has a good cut property, is light in weight, has a good heat retaining property, a cold retaining property, a sound absorbing property, and a low degree of dust generation. In addition, this heat retaining member may be a rock wool or glass wool heat retaining plate cut out to a certain width and aligned vertically. On the other hand, the cover material 3 is cloth or paper, for example, ALGC (aluminum glass cloth), ALK (aluminum craft paper), AL (aluminum foil), ALM (a laminate of aluminum foil and film), Kanresha, organic fiber nonwoven fabric, glass It consists of cloth, glass paper, carbon fiber felt, glass fiber felt, etc., and functions to improve shape retention, heat retention, and cold insulation that protect the heat retaining member 2 from external obstacles.
[0010]
2 shows the shape of the cut surface 5 of each of the divided pieces 1A shown in FIG. 1, and the drawing shows the divided piece 1D of FIG. The cut surface 5 such as the divided piece 1D may be formed perpendicular to the surface of the cover material 3 along the thickness direction. In the present invention, the cut surface 5 is formed of an inclined surface. That is, as shown in the drawing, the width dimension of the divided piece 1D cut by the cutting line 4 changes along the longitudinal direction because the cutting line 4 is formed of a substantially sine curve. In the split piece 1D, the inclined surfaces 5 'at both ends of the widest portion form an inclination angle of (+) X °, and the inclined surface 5 ″ at the narrowest portion of the center portion forms an inclination angle of (-) X °. In the meantime, it is formed so that the inclination angle gradually changes. Accordingly, the intermediate inclined surface 5A between the widest inclined surface 5 'and the narrowest inclined surface 5 "has X = 0 °. Forming a vertical plane. In the other divided pieces 1A, 1B, and 1C, the (+) X ° inclined surface is formed in the widest portion, and the (−) X ° inclined surface is formed in the narrowest portion. In the present invention, the inclination angle X is obtained from X = θ / 2 (n−1). Here, θ is the curved portion angle range (FIG. 3) of the duct body, and n is the number of divisions of the duct body. Therefore, when θ = 90 ° and n = 4, X = 15 °.
[0011]
FIG. 3 shows a schematic structure of the duct body 6 employed in the present invention. In this example, the duct body 6 is composed of a duct diameter (D), a duct bending radius (R), and a curved portion angle range θ, and as shown in the figure, n = 4 divided into four pieces 6A, 6B, 6C, 6D. In this example, θ = 90 ° is assumed for ease of explanation. As shown in the drawing, in this example, the duct piece 6A has the narrowest portion in the innermost part and is indicated by a dimension a. Moreover, the widest part is formed in the outermost part. Further, the duct piece 6B has the widest part at the outermost part and is indicated by a dimension b, and has the narrowest part at the innermost part. Similarly, the duct piece 6C has the narrowest part of the dimension c in the innermost part and the widest part in the outermost part. Further, the duct 6D has a widest portion having a dimension d at the outermost portion and forms the narrowest portion at the innermost portion.
[0012]
Next, a method of manufacturing the split pieces 1A, 1B, 1C, 1D of the heat insulating material 1 to be attached to the outer periphery of the duct body 6 shown in FIG. The divided pieces 1A, 1B, 1C, and 1D correspond to the duct pieces 6A, 6B, 6C, and 6D, respectively. As shown in FIG. 4, the heat insulating material 1 for making the divided pieces 1A and the like is composed of the laminated body of the heat insulating member 2 and the cover material 3 as described above, the horizontal dimension is (D + 2t) π, and the vertical dimension is about R. -It consists of (pi) / 2. As shown in FIG. 5, when the vertical dimension is a + b + c + d and the cutting line 4 is a sine curve of the maximum value H, a = (D / 2−t) · tan θ / 2 (n−1), H = (D + 2t) Tan θ / 2 (n−1), b = 2 (H + a), c = 2a, d = H + a. Therefore, from a + b + c + d = 12a = π / 2 · R, a≈R · π / 24.
[0013]
The cutting line 4 composed of three sine curves for dividing the heat insulating material 1 by obtaining the above values a and H is the following y ₁ , Y ₂ , Y _Three It looks like a curve.
y ₁ = (5a + 5/2 · H) -H / 2cos · x / (D + 2t) π · 360 °
y ₂ = (3a + 3/2 · H) + H / 2cos · x / (D + 2t) π · 360 °
y _Three = (A + H / 2) -H / 2cos.x / (D + 2t) π.360 °
[0014]
FIG. 6 shows the dimensions of the central portion and both side ends of each divided piece 1A, 1B, 1C, 1D of FIG. 5 for convenience of explanation. ₁ And the central dimension is a ₂ Y _Three It consists of an area surrounded by a curve. Similarly, the split piece 1B has dimensions b at both ends. ₁ And the center is b ₂ Y ₂ Curve and y _Three The segment 1C has an area surrounded by a curved line. ₁ And the center is c ₂ Y ₁ Curve and y ₂ It consists of an area surrounded by a curve, and the split piece 1D has both ends d ₁ And the center is d ₂ Y ₁ It consists of an area formed by a curve.
[0015]
FIG. 7 shows a state in which the divided pieces 1A, 1B, 1C, and 1D created as described above are respectively attached to the duct pieces 6A, 6B, 6C, and 6D to which they correspond. The position where the divided piece 1A and the like are attached to the duct piece 6A is not particularly limited, but all the divided pieces 1A and the like have the widest portion such as the divided piece 1A and the like on the outermost part of the duct piece 6A and the like to which it corresponds. It is desirable to adhere as follows. That is, in the case of the duct piece 6A, the dimension a of the widest part of the divided piece 1A is provided at the outermost part. ₂ The part of ₁ Are arranged. Similarly, the duct piece 6B has a dimension b of the widest portion at the outermost part. ₁ And the dimension b of the narrowest part in the innermost part ₂ Are arranged. In addition, the duct piece 1C has the dimension c of the widest part at the outermost part. ₂ Of the narrowest part in the innermost part c ₁ Is placed. The duct piece 1D has a dimension d of the widest portion on the outermost side. ₁ Of the narrowest part in the innermost part ₂ Are arranged respectively. In addition, when there is no big difference in the dimension of the widest part and the narrowest part (in this example, 1A and 1D correspond), as mentioned above, the attachment position of division | segmentation piece 1A, 1D is limited to the said position. It is not necessary, and is absorbed by its flexibility.
[0016]
FIG. 8 shows the duct manufactured according to FIG. In this case, as described above, in principle, there is no gap between the adjacent divided pieces 1A, 1B, 1B, 1C, 1C, 1D and the like due to the shape of the cutting line 4 and the inclination angle X of the cut surface 5. However, the gap seal 7 is wound around the gap because even a slight gap causes a decrease in heat retention. For example, an adhesive tape made of the same material as the cover material 3 is used for the gap seal 7, and airtightness is maintained. In particular, when both the cover material 3 of the heat insulating material 3 and the above adhesive tape are made of an aluminum glass cloth, it is suitable as a cold insulating material (use temperature: normal temperature to -200 ° C.) because of its particularly excellent moisture-proof performance.
[0017]
【Example】
Next, an embodiment of the manufacturing method described above will be briefly described. The heat insulating material 1 has a thickness (t) of 25 mm, a glass wool wave gap of 25 mm, and a density of 40 kg / m. ^Three A corrugated heat insulating plate (JIS A9504) in which an aluminum glass cloth (aluminum foil + glass cloth) is stretched on one side of a corrugated glass sheet having a lateral dimension of 785.4 mm and a longitudinal dimension of 321.5 mm was used. On the other hand, as the duct body 6, a spiral duct having a duct diameter (D) of 200 mm, a duct bending radius (R) of 200 mm, and a bending angle range (θ) of 90 ° is adopted, and the number of divisions (n) is set to four. What divided the said corrugated heat insulating board into 4 parts was adhered to the divided part. Cutting was performed using a water jet (three-dimensionally controllable such as a robot) at a pressure of 45,000 psi, a speed of 1000 mm / second, and an orifice diameter of 2/1000 inch from the surface of the cover material. Calculate H, a, b, c, and d under the above conditions, and y ₁ , Y ₂ , Y _Three The divided pieces 1A, 1B, 1C, and 1D can be formed by obtaining these curves. In this case, X is 15 °. As a result of attaching the above divided pieces 1A, 1B, 1C, and 1D to the spiral duct, it was proved that the construction was performed with almost no gap.
[0018]
Thermal insulation material 1 and y of the approximate sine curve ₁ , Y ₂ , Y _Three When cutting along a curved line, as described above, the inclination angle X of the narrowest part of the width dimension is (−) X ° (−15 ° in the embodiment), and the inclination angle of the widest part of the width dimension is + 15 °. However, it is necessary to cut so as to smoothly and smoothly change between them, but it can be formed easily and smoothly by using the above-described three-dimensional controllable water jet. In addition, the heat insulating material 1 may be cut completely, but if it is cut completely, it is divided into divided pieces 1A, etc., so that the handleability is poor, so that only the cover material 3 is left uncut. A method is adopted in which the material 3 is transported in a sealed state and the surface material 3 is cut at the construction site. As a result, it is possible to improve transportability and handling.
[0019]
FIGS. 9 to 11 illustrate a method for constructing a duct constructed with an on-site heat insulating material. As shown in FIG. 9, the duct body 6 is divided into four as shown in the figure, and the outermost and innermost dimensions of the respective duct pieces 6A, 6B, 6C, 6D are shown in FIG. , 6B is O, P, 6C is O, P, 6D is M, N, and the respective dimensions are measured. Next, the lateral dimension is obtained from the duct diameter (D) and the thickness (t) of the heat insulating material 1, and the values of a, b, c and d shown in FIG. 10 from the values of M, P, O and N described above. Ask for. That is, a = M + α, b = N + β, c = O + γ, d = P + δ. Here, α, β, γ, and δ are correction values determined by the thickness (t) of the heat insulating material 1 and are determined in advance. For example, when t = 25 mm, α, β, γ, and δ are about 7 mm, −7 mm, 13 mm, and −13 mm.
[0020]
Next, as shown in FIG. 10, a straight cutting auxiliary line 4 'is obtained and divided into divided pieces 1A, 1B, 1C, 1D. Further, the cutting auxiliary line 4 'is corrected in order to reduce the gap after deposition. As shown in FIG. 11, the horizontal direction is divided into eight equal parts, and the first, third, fifth, and seventh sections from the left are corrected vertically by the e dimension, and these are corrected. Connect with a smooth line. The dotted cut line 4 ″ obtained as described above is the final cut line 4. For example, by manually cutting along the cut line 4, the divided pieces 1A, 1B, 1C, and 1D can be easily obtained. Is on-site and facilitates cutting work.
[0021]
In the above description, the heat insulating material is attached only to the curved portion of the duct, but it is of course possible to increase the vertical dimension of the heat insulating material so that the straight pipe portion and the curved portion of the duct are wound and attached simultaneously. Further, the bending portion angle range θ is not limited to 90 °. In the above description, the number of divisions n is 4. However, the number of divisions is of course not limited to this. If the number of divisions is large, the corners can be removed accordingly and smooth deposition can be achieved, and the appearance beauty after construction can be improved. In addition, the water jet was used for the cutting, but it can also be manually performed by an expert.
[0022]
Next, the heat insulating material 1 by another Example is demonstrated based on FIG. 12, FIG.
FIG. 12 is a perspective view showing the external shape of the heat insulating material 1 in the state of cutting according to the present embodiment, and FIG. 13 is a perspective view showing the external shape of the heat insulating material 1 in the state of transportation. As with the heat insulating material 1 shown in FIG. 1, the heat insulating material 1 includes a heat insulating member 2 and a laminate in which a cover material 3 is attached to at least one surface thereof, and is divided into four pieces by three cutting lines 4W. It is divided into 1A, 1B, 1C and 1D. Here, in the present embodiment, the divided piece 1B is further divided into the right divided piece 1Br and the left divided piece 1Bl by the two cutting lines 4H that divide the left and right symmetrically at the center of the divided pieces 1B and 1D. Is divided into a right divided piece 1Dr and a left divided piece 1Dl.
After being divided into six divided pieces 1A, 1Br, 1Bl, 1C, 1Dr, and 1Dl in this way, the divided piece 1B is divided into the divided pieces 1D. Are connected to each other by abutting the widest portions of the right divided piece 1Dr and the left divided piece 1Dl. And as shown in FIG. 13, each widest part of division | segmentation piece 1A, 1B, 1C, 1D is stopped with the connection materials Y, such as a tape.
As described above, the present embodiment does not generate any end material at the time of cutting, and it is sufficient to connect at the narrowest part of all the divided pieces 1A, 1B, 1C, 1D when attached to the duct. It's easy to do.
In addition, about the heat insulating member 2 and the surface covering material 3, and how to obtain the cutting line 4W and the shape are as already described in the embodiment, the description thereof is omitted here.
Moreover, the heat insulating material 1 in the state at the time of conveyance is not limited to FIG. 13, It is FIG. 12, Comprising: You may not provide the cutting line 4H in particular.
[0023]
Next, a duct bend portion heat insulating material according to another embodiment will be described.
In the above-described embodiment, an example is shown in which all the divided pieces constituting the duct bending portion heat insulating material are obtained from one material. However, in this embodiment shown in FIGS. This shows an example in which each divided piece constituting the duct bending portion heat insulating material is obtained from the raw material. 14 is a plan view showing a state in which each material composed of a plurality of members is separated, and FIG. 15 is a diagram showing each material for clarifying the shape of each divided piece constituting the duct bending portion heat insulating material. It is a top view which shows the state which attached together.
The illustrated embodiment also shows an example in which the number of divisions of the duct itself is four as in the above-described embodiment, but in this embodiment, the material of the present invention is formed from a material composed of four members 21, 22, 23, and 24. Divided pieces 1A (1A) constituting the duct heat insulating material ₁ , 1A ₂ ), 1B (1B ₁ , 1B ₂ ), 1C (1C ₁ , 1C ₂ , 1C _Three , 1C _Four ), 1D (1D ₁ , 1D ₂ ).
The member 21 has a cutting line 4a. _1, 4b ₁ The member 22 has a cutting line 4a. _2, 4b ₂ The member 23 has a cutting line 4c. ₂ The member 24 has a cutting line 4c. ₂ Have These members 21, 22, 23, 24 have a cutting line 4 a as described above. ₁ , 4a ₂ , 4b ₁ , 4b ₂ , 4c ₁ , 4c ₂ 1A (1A) constituting the duct bending portion heat insulating material of the present invention from the material constituted by these members 21, 22, 23, and 24. ₁ , 1A ₂ ), 1B (1B ₁ , 1B ₂ ), 1C (1C ₁ , 1C ₂ , 1C _Three , 1C _Four ), 1D (1D ₁ , 1D ₂ )
That is, the split piece 1A is formed by the cutting line 4a of the member 21. ₁ 1A of split piece components cut by the ₁ And the cutting line 4a of the member 22 ₂ 1A of split piece components cut by the ₂ And obtained by Moreover, the division | segmentation piece 1B is the cutting line 4a of the member 21. ₁ , 4b ₁ Split piece component 1B cut out by ₁ And the cutting line 4a of the member 22 ₂ , 4b ₂ Split piece component 1B cut by ₂ And obtained by Further, the split piece 1C is formed by the cutting line 4b of the member 21. ₁ Split piece component 1C cut by ₁ And cutting line 4c of member 23 ₁ Split piece component 1C cut by ₂ And the cutting line 4b of the member 22 ₂ Split piece component 1C cut by _Three And the cutting line 4c of the member 24 ₂ Split piece component 1C cut by _Four And obtained by Further, the divided piece 1D is formed by the cutting line 4c of the member 23. ₁ Split piece component 1D cut by ₁ And the cutting line 4c of the member 24 ₂ Split piece component 1D cut by ₂ And obtained by
That is, the material of the present embodiment is configured by members divided by the center line AA ′ line of the split piece 1C and the center line BB ′ line in the length (L) direction as shown in FIG. Is. In addition, you may divide | segment by the center line CC 'line of the division | segmentation piece 1B instead of AA' line. Moreover, you may divide | segment by AA 'line, BB' line, and CC 'line.
As in this embodiment, by producing a divided piece by a plurality of members 21, 22, 23, and 24, production of a large divided piece can be facilitated. In particular, the dimensions that can be cut now are 1000 mm or less in product width and 2200 mm or less in the length direction (L). For example, this is particularly effective when producing a split piece when the diameter of the duct exceeds 600 mm. It is. In addition, the width and length of the material of the heat insulating material itself are limited, and this is also effective when a heat insulating material having a width or length greater than the size of the material is required.
[0024]
【The invention's effect】
The present invention has the following remarkable effects.
1) In order to cut the duct bending portion heat insulating material by the cutting line of the substantially sine curve specified from the shape and dimensions of the duct main body and the heat insulating material, and to make the wide and narrow portions of the adjacent divided pieces alternately correspond to each other. No scrap material is produced. This eliminates the need for waste disposal and improves the yield of the material. Moreover, since no waste is generated, the storage space can be reduced.
2) Since the heat insulation material is cut from (−) X ° to (+) X ° by changing the inclination angle from the narrowest part to the widest part of the width dimension, the heat insulation material is applied to the duct body. In that case, there is almost no gap. Thereby, the heat retention can be improved. The value of X is specified by the curved portion angle range and the number of divisions, and an optimal value is set in accordance with the shape of the duct body to prevent the generation of a gap.
3) The heat insulating material is composed of, for example, a paper or cloth cover material such as an aluminum glass cloth adhered to one side of a heat insulating member obtained by folding glass wool in a zigzag shape using an adhesive material. , Weight reduction, prevention of dust generation, and improvement of sound absorption.
4) The above heat insulating material is completely cut by a predetermined cutting line or cut after being kneaded to make a divided piece, and this is wound around the duct piece of the corresponding duct body, and the heat insulating material is applied to the duct. Is formed. The duct is kept warm without any gaps.
5) When the divided piece is wound around the duct piece, for example, the wide part of the divided piece is made to coincide with the outermost side of the duct piece, and the narrow part of the divided piece is made to coincide with the innermost side of the duct piece. In particular, there is no gap between adjacent divided pieces. Thereby, the heat retention and the appearance beauty can be improved.
6) Since heat insulation does not fall apart by kneading the heat insulating material, it is possible to improve transportability and handling.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an external shape of a heat insulating material according to the present invention.
FIG. 2 is a perspective view showing one split piece obtained by cutting the heat insulating material of the present invention along a predetermined cutting line and the shape of an inclined surface thereof.
FIG. 3 is a side view showing a partial shape of a duct body on which the heat insulating material of the present invention is applied.
FIG. 4 is a perspective view showing the external shape of the heat insulating material of the present invention with specified vertical and horizontal dimensions.
FIG. 5 is a plan view showing a divided piece partitioned by a cutting line of the heat insulating material of the present invention.
6 is a plan view for specifically displaying the narrowest part and the widest part of the divided piece of FIG. 5;
7 is a side view showing an external appearance of a duct in which the divided pieces shown in FIG. 6 are wound and attached to the duct main body of FIG. 3;
FIG. 8 is a side view showing a gap seal for sealing a gap generated on the surface of the duct.
FIG. 9 is a side view showing measurement points of required dimensions on the duct body side in a construction method in which a heat insulating material is attached to the duct body by a simple method.
FIG. 10 is a plan view showing a cutting auxiliary line of a divided piece corresponding to FIG. 9;
11 is a plan view showing a method for correcting the cutting auxiliary line in FIG. 10;
FIG. 12 is a perspective view showing the external shape of a heat insulating material according to another embodiment.
FIG. 13 is a perspective view showing an external shape of a heat insulating material in a state during transportation according to the embodiment.
FIG. 14 is a plan view of members constituting a duct bending portion heat insulating material according to another embodiment.
FIG. 15 is a plan view showing a state in which the members of FIG. 12 are attached together;
FIG. 16 is a side view showing the external appearance of a conventional divided duct.
FIG. 17 is a plan view showing a conventional heat insulating material cutting method;
[Explanation of symbols]
1 Thermal insulation material
1A split piece
1B piece
1C split piece
1D segment
2 Thermal insulation material
3 Surface material
4 Cut line
4 'Cutting auxiliary line
4 "cut line
5 Inclined surface
5 'inclined surface
5 ″ inclined surface
5A vertical plane
6 Duct body
6A duct piece
6B Duct piece
6C Duct piece
6D duct piece
7 Clearance seal
8 End material

Claims (10)

It consists of a laminated body of a heat insulating member and a cover material adhered to at least one surface thereof, and includes a duct diameter (D), a duct bending radius (R), a curved portion angle range (θ), the number of divisions (n), and the laminated layer A substantially sine curve-shaped cutting line determined by a substantially sine curve-shaped cutting line specified from the value of the body thickness (t) or from the dimensions and correction values of the back and abdominal parts of the n-divided duct The material of the laminated body having the vertical and horizontal dimensions specified from the respective values is cut into the divided pieces of the number of divisions, and the cutting line includes a wide portion and a narrow portion of each adjacent divided piece. A duct-curved portion heat insulating material, characterized by comprising alternately corresponding materials, wherein at least the material is not formed with a cut end material. The end face on the cutting side of the split piece having different width dimensions along the longitudinal direction by cutting with the substantially sine curve is a direction in which the inclination angle decreases from the vertical line from the narrowest part to the widest part of the width dimension. Gradually changes from a (−) inclined surface with an inclination angle X toward the (+) inclined surface with an inclination angle X inclined in the direction of increasing the inclination angle from a vertical line, and forms a vertical surface at an intermediate position thereof. The duct bend portion heat insulating material according to claim 1, wherein The duct bend portion heat insulating material according to claim 2, wherein an inclination angle X of the (+) and (−) inclined surfaces is θ / 2 (n−1). The duct bend portion heat insulating material according to any one of claims 1 to 3, wherein the heat insulating member is made of glass wool folded in a zigzag shape using an adhesive, and the cover material is paper or cloth. In the case of cutting so that the narrowest part and the widest part of the divided piece are alternately located in the central part of the material, the divided piece in which the narrowest part is located in the central part of the raw material is the narrowest part. 5. The duct bending portion heat insulating material according to claim 1, wherein the widest portions are further connected to each other, and the widest portions of all the divided pieces are fixed with a connecting material. The duct bending part heat insulating material according to claim 1, wherein the laminate is obtained by leaving only a single-sided covering material uncut. The duct bend portion heat insulating material according to claim 1, wherein the material includes a plurality of divided members. A heat insulating material is attached to the outer surface, and is a duct having a duct diameter (D), a duct bending radius (R), and a curved portion angle range (θ). The heat insulating material is attached to at least one surface of the heat insulating member. From the values of the duct diameter (D), the duct bending radius (R), the curved portion angle range (θ), the number of divisions (n), and the thickness (t) of the laminated body. Divided pieces completely cut by the specified substantially sine curve-shaped cutting line, or by the substantially sine curve-shaped cutting line obtained from the dimensions and correction values of the back and belly parts of the n-divided duct Only one side of the cover material is left uncut, and the divided piece is attached to the duct portion corresponding to the divided piece, with the widest part of each piece being attached to the outermost side of the duct as required. A duct constructed with a heat insulating material characterized by A laminate in which a cover material is laminated on at least one surface of a heat insulating member on the outer periphery of a duct having a duct diameter (D), a duct bending radius (R), and a bending portion angle range (θ) is the duct diameter (D), duct bending. Radius (R), curved portion angle range (θ), number of divisions (n), thickness of laminated body (t), or a substantially sinusoidal cut line specified from the values of n-divided ducts Corresponding to the duct is a piece that has been left uncut by dividing pieces or a single-sided covering material that has been completely cut by a substantially sine curve cutting line obtained from the dimensions and correction values of the part and the abdomen. A method for constructing a duct, wherein a first procedure for preparing a laminated body having vertical and horizontal dimensions specified from the respective values, and a first method for displaying the sine-curved cutting line on one side of the laminated body Step 2 and each thermal insulation material from the narrowest part to the widest part Accordingly, the third cutting is performed along the cutting line while changing the inclination angle X of the cut surface from the range (−) θ / 2 (n−1) to the range (+) θ / 2 (n−1). And a step of attaching the divided piece cut as necessary to the duct part corresponding to the divided piece with the wide part corresponding to the outermost side of the duct and the narrow part corresponding to the innermost side. A method of constructing a duct constructed with a heat insulating material, characterized in that The cutting of the third procedure is performed leaving only the surface material of one side of the heat insulating material uncut, and cutting the uncut portion that has been cut before application of the fourth procedure. The construction method of the duct by which the heat insulating material of Claim 9 was constructed.

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