JPH09196450A - Heat insulating material at duct curved section, duct worked with heat insulating material and working method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable some divided pieces to be arranged at a duct main body without any clearance therebetween and further to improve a heat insulating property by a method wherein a cutting line is formed by a wide width section and a narrow width section of each of divided adjoining pieces corresponding to each other. SOLUTION: This heat insulating material 1 is comprised of a heat insulating member 2 and a laminated member having a surface member 3 adhered at least to one surface thereof. In addition, the heat insulating material 1 is divided into a plurality of divided pieces 1A, 1B, 1C and 1D by a cutting line 4 or manufactured in a not-yet-cut state in which only the heat insulating member 2 is cut at the cutting line 4 with only the part of the surface member 3 being left, the location of the not-yet-cut portion is cut during its use as the divided piece 1A or the like. The heat insulating member 2 is comprised of a member in which a glass wool, for example, is folded in a zig-zag form with an adhesive agent and formed into a plate. This heat insulating member 2 has many features that it can be manufactured from a long material, it has a superior cutting characteristic, light weight, superior heat insulating property, cold heat insulating property and sound absorbing property, and further a low dust producing property.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating material which is formed by adjoining divided duct pieces adjacent to each other along a curved line and is attached to the outer periphery of a duct body applied to an air conditioner or the like. The present invention relates to a duct provided with a heat insulating material and a construction method thereof.

[0002]

2. Description of the Related Art A duct having a heat insulating material, which is generally used in the past, is formed by the following method. FIG.
As shown in FIG. 6, the duct main body 60 made of an iron material or the like has, for example, four divided duct pieces 60A, 60B, 60C, 60.
D is adjacent to each other and joined to form a curved portion. Each duct piece 60A, etc. has a heat insulating material divided piece 1A ', 1B', 1C ', which has a size corresponding to the developed size of the duct piece 60A.
1D '(FIG. 17) is applied and applied to its outer surface.

A conventional heat insulating material is made of a material such as glass wool, and as shown in FIG. 17, each divided piece 1A ', 1B', 1
C'and 1D 'are formed by cutting a rectangular heat insulating material with a substantially sinusoidal cutting line 40. As shown in the drawing, each of the divided pieces 1A ', 1B', 1C ', 1D' has a widest portion at the center and a width dimension 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 outermost portions of the duct pieces 60A and the like are aligned with the widest portions. The innermost part is attached and attached. As described above, the duct in which the divided pieces 1A ′ and the like are adhered to the duct piece 60 side without a gap and a heat insulating material is applied is formed.

[0004]

When the duct piece 60A or the like of the duct body 60 is covered with the divided pieces 1A 'or the like to form a duct, a gap is formed between the adjacent divided pieces 1A', 1B 'or the like. The cutting line 4 shown in FIG.
It is necessary to accurately cut the divided pieces 1A 'along 0. However, this cutting work requires skill,
There is a problem that no one can easily do. Further, as shown in FIG. 17, when a conventional divided piece 1A 'or the like is cut, a scrap material 8 is always produced. It is difficult to divert this end material 8 to another, and it becomes scrap. In addition, the cutting line 40
Even if the cut pieces can be accurately cut along the line, there is a problem that the divided pieces 1A 'and the like are thick and a slight gap is inevitably formed between adjacent divided pieces, and the gap treatment is indispensable. . In the prior art, it was necessary to fill the gap with glass wool.

The present invention solves the above problems, and the divided pieces of the heat insulating material can be arranged in the duct main body with almost no space between them, and the heat insulating property can be improved, and the end material is hardly generated. , The waste of material is eliminated and waste of material is eliminated, the product cost can be reduced, and the cutting work can be easily performed without requiring special skill. The purpose is to provide a construction method.

[0006]

In order to achieve the above object, the present invention comprises a laminated body of a heat insulating member and at least a front material adhered to one surface thereof, and has a duct diameter (D) and a duct. The radius of curvature (R), the angle range of the curved portion (θ), the number of divisions (n), the cutting line of a substantially sine curve specified from the values of the thickness (t) of the laminated body, or the duct divided into n. A material obtained by cutting the material of the laminate having vertical and horizontal dimensions specified from the respective values by cutting lines of a substantially sine curve obtained from the size of the back and the abdomen and the correction value into the divided pieces of the number of divisions. The cutting line is composed of a wide portion and a narrow portion of adjacent divided pieces alternately corresponding to each other, and at least a duct curved portion heat insulating material in which no end material based on cutting is formed in the material is configured. To do. More specifically, the cutting-side end surface of the divided piece having different width dimensions along the longitudinal direction by cutting with the substantially sine curve is inclined from the vertical line from the narrowest portion to the widest portion of the width dimension. Inclination angle X that inclines in the direction of decreasing angle
It is characterized in that it gradually changes from the (-) inclined surface to the (+) inclined surface of the inclination angle X that is inclined from the vertical line in the direction of increasing the inclination angle, and forms a vertical surface at an intermediate position. In addition, the inclination angle X of the (+) and (−) inclined surfaces
Is θ / 2 (n-1), the heat insulating member is made of glass wool folded in a zigzag shape with an adhesive, and the front material is paper or cloth. To do. Also, 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 material is the narrowest part. The parts are further cut to connect the widest parts to each other, and the widest parts of all the divided pieces are fixed by a connecting member. Further, the laminate is characterized in that only one surface covering material is left uncut. Further, the material is constituted by a plurality of divided members. A heat insulating material is applied to the outer surface, and the duct has a duct diameter (D), a duct bending radius (R), and a curved portion angle range (θ). The heat insulating material is a heat insulating member and at least one surface thereof. Of the duct diameter (D), the duct bending radius (R), the bending portion angle range (θ), the number of divisions (n), and the thickness (t) of the laminated body. Divided completely by a sine curve cutting line specified by the value or by a sine curve cutting line obtained from the size and correction value of the back and belly parts of the duct divided into n It consists of one or only one side surface covering material left uncut, and the divided pieces are made to match the divided piece with the duct part corresponding to the outermost part of the duct. It constitutes a duct with a heat insulating material characterized by being adhered. is there. Further, a laminated body in which a surface covering material is superposed on at least one surface of a heat insulating member is provided on the outer circumference of the duct having the duct diameter (D), the duct bending radius (R), and the bending portion angle range (θ), and the duct diameter (D), Duct bend radius (R), bend angle range (θ), number of divisions (n),
Cutting with a substantially sine curve shape determined by a cutting line having a substantially sine curve shape specified from the value of the thickness (t) of the laminated body or obtained from the dimensions and correction values of the back portion and the belly portion of the duct divided into n It is a construction method of a duct that is constructed by corresponding to the above-mentioned duct, in which only a divided piece completely cut by a line or a surface covering material on one side is left uncut, and the length and width specified from each of the above values A first procedure for preparing a laminated body having dimensions, a second procedure for displaying the sine curve-shaped cutting line on one surface of the laminated body, and the narrowest portion to the widest portion of each divided piece of the heat insulating material. A third part which cuts along the cutting line while changing the inclination angle X of the cutting surface from (-) θ / 2 (n-1) to (+) θ / 2 (n-1)
The procedure of (4) and attaching the cut piece cut as necessary to the duct portion corresponding to the divided piece with the wide portion of the divided piece aligned with the outermost side of the duct and the narrow portion of the divided piece aligned with the innermost side. And a method of constructing a duct provided with a heat insulating material. Further, the cutting in the third procedure is performed while leaving only the front surface covering material on one surface of the heat insulating material uncut, and the uncut portion cut uncut during the application in the fourth procedure is cut. It is characterized by a method of constructing a duct provided with a heat insulating material.

Specified from the duct diameter (D) of the duct body, the duct bending radius (R), the angle range of the bending portion (θ), the number of divisions (n), the thickness (t) of the heat insulating material attached to the duct body, etc. The sine curve cutting line, or the substantially sine curve cutting line obtained from the size and the correction value of the spine and antinode of the n-divided duct, and the wide and narrow portions of the adjacent divided pieces. It is possible to obtain a duct provided with a heat insulating material with almost no gaps by forming divided pieces which are formed so as to alternately correspond to each other and applying the divided pieces cut along the cutting line to the outer periphery of the duct body. In addition, the cut surface of the divided pieces has an angle X =-
From the (−) inclination angle of θ / 2 (n−1), X = θ / 2 (n
By gradually changing to the inclination angle of (+) of -1) and cutting, there is almost no gap between the adjacent divided pieces. In addition, since the adjacent divided pieces are formed such that the wide portions and the narrow portions are alternately associated with each other, no scraps are generated.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a heat insulating material for a curved portion of a duct according to the present invention, a duct provided with the heat insulating material, 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 is composed of a heat insulating member 2 and a laminated body in which a front material 3 is attached to at least one surface thereof. Insulating material 1
Is cut along the cutting line 4 into a plurality of divided pieces 1A, 1B, 1C, 1
It is divided into D or is produced in an uncut state in which only the heat retaining member 2 is cut by the cutting line 4 leaving only the surface material 3 portion, and the uncut portion is cut at the time of use to divide the piece 1A, etc. To be used. The method of obtaining the cutting line 4 and the shape thereof will be described later.

The heat insulating member 2 is made of, for example, glass wool which is folded into a zigzag shape using an adhesive and formed into a plate shape. The heat insulating member 2 has many features such that a long product can be produced, it has good cutability, is light in weight, has good heat insulating properties, cold insulating properties, good sound absorbing properties, and has low dust emission.
The heat insulating member may be formed by cutting a heat insulating plate made of rock wool or glass wool into a certain width and arranging them in a vertical arrangement. On the other hand, the surface material 3 is cloth or paper, for example, ALGC (aluminum glass cloth), ALK (aluminum kraft paper), AL (aluminum foil), ALM (a laminate of aluminum foil and film), Kanreisha, organic fiber non-woven fabric, glass. It is made of cloth, glass paper, carbon fiber felt, glass fiber felt, and the like, and functions to improve the shape retention, heat retention, and cold insulation that protect the heat insulation member 2 from external obstacles.

FIG. 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 of the divided piece 1D or the like may be formed perpendicularly to the surface of the surface covering material 3 along the thickness direction, but in the present invention, the cut surface 5 is an inclined surface. That is, as shown in the figure, the width dimension of the divided piece 1D cut along the cutting line 4 changes along the longitudinal direction because the cutting line 4 is substantially a sine curve. In the divided 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 central portion forms an inclination angle of (-) X °. Therefore, the inclination angle is gradually changed between them, so that the inclined surface 5'of the widest portion and the inclined surface 5 "of the narrowest portion are formed.
The inclined surface 5A intermediate between and forms a vertical surface of X = 0 °.
Also in the case of the other divided pieces 1A, 1B, 1C, (+) in the widest part
An inclined surface of X ° is formed, and an inclined surface of (−) X ° is formed at the narrowest portion. In the present invention, the inclination angle X is X =
It is obtained from θ / 2 (n-1). Where θ is the angle range of the curved portion of the duct body (FIG. 3), and n is the number of divisions of the duct body. Therefore, when θ = 90 ° and n = 4, X = 15 °.

FIG. 3 shows a schematic structure of the duct body 6 adopted in the present invention. In this example, the duct body 6 has a duct diameter (D), a duct curving radius (R), and a curving angle range of θ, and as shown in the figure, n = 4 quadrant duct pieces 6A, 6B, 6C, It consists of 6D. In order to facilitate the explanation, θ = 90 ° in this example. As shown in the figure, in this example, the duct piece 6A has the narrowest portion in the innermost portion and is indicated by the dimension a. Further, the widest part is formed at the outermost part. Also, the duct piece 6
B has the widest part in the outermost part, which is indicated by the dimension b, and has the narrowest part in 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. Also, the duct 6D
Has the widest part of the dimension d at the outermost part and forms the narrowest part at the innermost part.

Next, a method of manufacturing the divided pieces 1A, 1B, 1C, 1D of the heat insulating material 1 adhered to the outer periphery of the duct body 6 shown in FIG. 3 will be described. The divided pieces 1A, 1B, 1C, 1
D corresponds 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 surface covering material 3 as described above, and the horizontal dimension is (D + 2t) π and the vertical dimension is about R.
・ It consists of π / 2. As shown in FIG. 5, the vertical dimension is a + b
+ C + d, and when the cutting line 4 is a sine curve with 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, a + b + c + d = 12a = π / 2 · R to a≈R ·
It becomes π / 24.

The cutting line 4 consisting of three sine curves for dividing the heat insulating material 1 by obtaining the above values of a and H is the following y
It becomes like a ₁ , y ₂ , y ₃ 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 ₃ = (a + H / 2) −H / 2cos · x / (D + 2)
t) π ・ 360 °

FIG. 6 shows the divided pieces 1A, 1B, 1C of FIG.
The dimensions of the central portion and both end portions of 1D are shown for convenience of explanation. In the split piece 1A, the dimension of both ends is a ₁ and the central dimension is a.
₂ of the area surrounded by the y ₃ curve, and similarly, the split piece 1B has the area surrounded by the y ₂ curve and the y ₃ curve with the dimension b ₁ at both ends and the center b ₂ and The divided piece 1C has a dimension c ₁ at both ends and c ₂ at the center and has an area surrounded by a y ₁ curve and a y ₂ curve. The divided piece 1D has a d ₁ at both ends and a center at d ₂ and a y ₁ curve. It consists of the area formed.

FIG. 7 shows a state in which the divided pieces 1A, 1B, 1C and 1D produced as described above are respectively attached to the duct pieces 6A, 6B, 6C and 6D to which they correspond. The position where the divided pieces 1A and the like are attached to the duct pieces 6A is not particularly limited, but all the divided pieces 1A and the like have the widest part of the divided pieces 1A and the like located at the outermost part of the duct pieces 6A and the like to which they correspond. It is desirable to apply as follows. That is, the duct piece 6A
In this case, the portion with the dimension a ₂ of the widest portion of the divided piece 1A is arranged at the outermost portion, and the portion with the dimension a ₁ is arranged at the innermost portion.
Similarly, in the duct piece 6B, the dimension b _{1 of the} widest portion is arranged at the outermost portion and the portion b ₂ of the narrowest portion is arranged at the innermost portion. Further, the duct piece 1C has a dimension c _{2 of the} widest portion at the outermost portion.
Is arranged, and the dimension c ₁ of the narrowest part is arranged in the innermost part. Further, the duct piece 1D has a dimension d of the widest portion on the outermost side.
The portion ₁ is arranged, and the portion having the dimension d ₂ of the narrowest portion is arranged in the innermost portion. If there is no significant difference in the dimensions of the widest portion and the narrowest portion (corresponding to 1A and 1D in this example), the attachment positions of the split pieces 1A and 1D are limited to the above positions as described above. It may or may not be absorbed due to its flexibility.

FIG. 8 shows the duct produced according to FIG. In this case, as described above, depending on the shape of the cutting line 4 and the inclination angle X of the cutting surface 5, the adjacent divided pieces 1A, 1B, 1
In principle, there is no gap between B, 1C, 1C, 1D, etc. However, even if there is a slight gap, it causes deterioration of heat retention, so that the gap seal 7 is wound around the gap. For the gap seal 7, for example, an adhesive tape or the like made of the same material as the front material 3 is used, and airtightness is maintained. In particular, when both the surface material 3 of the heat insulating material 3 and the above-mentioned adhesive tape are made of aluminum glass cloth, they are suitable as a cold insulating material (usage temperature: normal temperature to -200 ° C.) because of excellent moistureproof performance.

[0017]

EXAMPLE Next, an example of the above-mentioned manufacturing method will be briefly described. The heat insulation 1 has a thickness (t) of 25 mm,
Glass wool wave gap 25mm, density 40kg /
m ^3, the transverse dimension 785.4Mm, waveform insulation board strung aluminum glass cloth on one side of the waveform glass plate longitudinal dimension 321.5Mm (aluminum foil + glass cloth) (JISA950
4) was used. On the other hand, the duct body 6 has a duct diameter (D) of 200 mm and a duct bending radius (R) of 200 m.
A spiral duct having m and a bending angle range (θ) of 90 ° was adopted, the number of divisions (n) was set to 4, and the corrugated heat insulating plate was divided into 4 parts and attached to the divided parts. A water jet (three-dimensionally controllable by a robot etc.) is used for cutting, pressure from the front material side is 45,000 psi, speed is 1000 mm / sec, orifice diameter is 2/1000 in
It was done on ch. Under the above conditions, H, a, b, c, d
Is calculated and the respective curves of y ₁ , y ₂ and y ₃ are obtained, the divided pieces 1A, 1B, 1C and 1D can be formed. In this case X is 15 °. The above divided pieces 1A, 1
As a result of depositing B, 1C, and 1D on the spiral duct, it was proved that the spiral duct was installed with almost no gap.

The heat insulating material 1 and y ₁ , y ₂ having substantially sine curves,
When cutting along the y ₃ curve, as described above, the inclination angle X of the narrowest part of the width dimension is (−) X ° (−1 in the embodiment).
5 °) and the inclination angle of the widest part of the width dimension is + 15 °,
It is necessary to cut so as to smoothly and gradually change the interval, but it can be easily and smoothly formed by using the above-mentioned three-dimensionally controllable water jet. Further, the heat insulating material 1 may be cut completely, but if it is cut completely, the heat insulating material 1 is divided into divided pieces 1A and the like and handling is poor. Therefore, only the surface covering material 3 is left uncut, and A method is used in which the material 3 is conveyed in a sandwiched state and the surface material 3 is cut at the construction site. This makes it easier to carry,
The handling property can be improved.

9 to 11 illustrate a method of constructing a duct on which a heat insulating material is constructed on site. As shown in FIG. 9, the duct body 6 is divided into four parts as shown in the drawing, and the outermost and innermost dimensions of the respective duct pieces 6A, 6B, 6C and 6D are 6A as shown in the drawing. , 6B
Is O, P, 6C is O, P, and 6D is M, N, and the respective dimensions are measured. Next, the lateral dimension is calculated from the duct diameter (D) and the thickness (t) of the heat insulating material 1, and the above M, P, O,
The values of a, b, c, d shown in FIG. 10 are obtained from the value of N. That is, a = M + α, b = N + β, c = O + γ, d =
It is obtained by P + δ. Here, α, β, γ, δ are correction values determined by the thickness (t) of the heat insulating material 1 and are predetermined. For example, when t = 25 mm, α, β, γ,
δ is about 7 mm, −7 mm, 13 mm, −13 mm.

Next, as shown in FIG. 10, a linear cutting auxiliary line 4'is obtained and divided into divided pieces 1A, 1B, 1C and 1D. Further, the auxiliary cutting line 4'is corrected in order to reduce the gap after the attachment. As shown in FIG. 11, this correction divides the lateral direction into eight equal parts, and corrects the first, third, fifth, and seventh sections from the left by the e dimension in the vertical direction. Connect with a smooth line. The dotted cutting line 4 ″ obtained as described above is the final cutting line 4, and the split pieces 1A, 1B, 1C, 1D can be easily obtained by manually cutting along the cutting line 4, for example. Is on-site and the cutting work can be facilitated.

In the above description, the heat insulating material was applied only to the curved portion of the duct, but the vertical dimension of the heat insulating material may be increased so that the straight pipe portion and the curved portion of the duct are wound and applied at the same time. Of course good. Further, the curved portion angle range θ is not limited to 90 °. Further, although the number of divisions n is set to 4 in the above description, it is not limited thereto, and if the number of divisions is large, the corners can be removed and smooth attachment can be achieved, and the appearance beauty after construction can be improved. Further, the cutting is performed by using a water jet, but it can be manually performed by a skilled person.

Next, regarding the heat insulating material 1 according to another embodiment,
This will be described with reference to FIGS. 12 and 13. FIG. 12 is a perspective view showing the external shape of the heat insulating material 1 in the cutting state of this embodiment, and FIG. 13 is a perspective view showing the external shape of the heat insulating material 1 in the transportation state. The heat insulating material 1 is the heat insulating material 1 shown in FIG.
Similarly, the heat insulating member 2 and the surface covering material 3 on at least one surface thereof
And a laminated body to which is adhered, and is divided into four divided pieces 1A, 1B, 1C and 1D by three cutting lines 4W. Here, in the present embodiment, the split piece 1B is further divided into the right split piece 1Br and the left split piece 1B1 by the two cutting lines 4H that symmetrically split the split pieces 1B and 1D into the left and right sides.
D is divided into a right divided piece 1Dr and a left divided piece 1Dl. In this way, once the six divided pieces 1A, 1Br, 1B1,
After being divided into 1C, 1Dr, and 1Dl, the divided piece 1B is the widest portion of the right divided piece 1Br and the left divided piece 1Bl, and the divided piece 1D is the widest portion of the right divided piece 1Dr and the left divided piece 1Dl. Butt each other and connect. Then, as shown in FIG. 13, the widest part of each of the divided pieces 1A, 1B, 1C, 1D is stopped by a connecting material Y such as a tape. As described above, in the present embodiment, all the divided pieces 1A, 1 do not generate scraps at the time of cutting and when they are attached to the duct.
Since it is sufficient to connect the narrowest portions of B, 1C, and 1D, it is easy to perform the construction. It should be noted that the heat retaining member 2 and the surface covering material 3, and the method of obtaining the cutting line 4W and the shape thereof are the same as those already described in the embodiment, and therefore the description thereof is omitted here. In addition, the heat insulating material 1 in the state during transportation is shown in FIG.
The cutting line 4 is not limited to FIG.
The one without H may be provided.

Next, a duct curved portion heat insulating material according to another embodiment will be described. In the above-mentioned embodiment, an example is shown in which all the divided pieces constituting the duct curved portion heat insulating material are obtained from a single material, but in the present embodiment shown in FIGS.
It shows an example in which each of the divided pieces constituting the duct curved portion heat insulating material is obtained from a material formed of a plurality of members. FIG. 14 is a plan view showing a state in which the respective materials composed of a plurality of members are separated from each other, and FIG. 15 is a plan view showing the respective materials in order to clarify the shape of each divided piece constituting the duct curved portion heat insulating material. It is a top view which shows the state which matched. The illustrated embodiment also shows an example in which the number of divisions of the duct itself is 4 as in the case of the above-mentioned embodiment, but in the present embodiment, the material of the present invention is composed of four members 21, 22, 23, 24. Divided piece 1A (1A
₁ , 1A ₂ ), 1B (1B ₁ , 1B ₂ ), 1C (1C ₁ , 1
C ₂ , 1C ₃ , 1C ₄ ) and 1D (1D ₁ , 1D ₂ ) are obtained. The member 21 includes cutting lines 4a _1, 4b ₁
The member 22 has cutting lines 4a _{2 and} 4b ₂ , the member 23 has cutting lines 4c ₂ , and the member 24 has cutting lines 4c ₂
Having. The cutting lines 4a ₁ , 4a ₂ , 4b ₁ , 4b ₂ , 4c ₁ , 4 as described above are attached to these members 21, 22, 23, 24.
By providing c ₂ , these members 21, 22, ₂
From the material consisting of 3,24, split pieces 1A constituting the duct bend thermal insulation of the present invention (1A _1, 1A _2), 1B
(1B ₁ , 1B ₂ ), 1C (1C ₁ , 1C ₂ , 1C ₃ , 1,
C _4), to obtain a _{1D (1D 1, 1D 2)} . That is, the divided pieces 1A includes a split piece component 1A ₁ which are cut by the cutting lines 4a ₁ of the member 21 is obtained by the divided piece component 1A ₂ to be cut by the cutting lines 4a ₂ of the member 22. Further, the divided piece 1B is formed by cutting lines 4a ₁ and 4 of the member 21.
a divided piece component 1B ₁ which are cut by b _1, obtained by the split piece component 1B ₂ to be cut by the cutting lines 4a _2, 4b ₂ of the member 22. In addition, divided piece 1C
Is a divided piece constituent member 1C ₁ cut by the cutting line 4b ₁ of the member 21, a divided piece constituent member 1C ₂ cut by the cutting line 4c ₁ of the member 23, and a divided piece cut by the cutting line 4b ₂ of the member 22. It is obtained by the constituent member 1C ₃ and the divided piece constituent member 1C ₄ cut by the cutting line 4c ₂ of the member 24. The divided pieces 1D is a split piece component 1D ₁ to be cut by the cutting line 4c ₁ of the member 23 is obtained by the divided piece component 1D ₂ to be cut by the cutting line 4c ₂ of the member 24. That is, the material of the present embodiment is divided into pieces 1C as shown in FIG.
Center line A-A 'and the center line B- in the length (L) direction
It is composed of members divided by the line B '.
The center line C- of the split piece 1B is used instead of the line A-A '.
It may be divided by the C'line. Also, AA 'line, B
It may be divided by the -B 'line and the CC' line. As in the present embodiment, by producing a divided piece with a plurality of members 21, 22, 23, 24, it is possible to easily produce a large divided piece. In particular, since the product width (W) is 1000 mm or less and the length direction (L) is 2200 mm or less, the size that can be cut at present is particularly effective when, for example, producing a divided piece when the diameter of the duct exceeds 600 mm. Is. Further, the width and length of the material of the heat insulating material itself are limited, and it is also effective when the heat insulating material having a width and a length larger than the size of this material is required.

[0024]

According to the present invention, the following remarkable effects are obtained. 1) The shape of the duct body and the heat insulating material,
It cuts by a cutting line of a substantially sine curve specified from the dimension, and the wide parts and the narrow parts of the adjacent divided pieces are alternately made to correspond to each other, so that no end material is generated. Therefore, the waste treatment is not necessary and the yield of the material can be improved. Moreover, since no waste is generated, the storage space can be reduced. 2) Since the heat insulating material is cut by changing the inclination angle from the narrowest part of the width dimension to the widest part and changing from (-) X ° to (+) X °, the heat insulating material is applied to the duct body. If you do, there is almost no gap. Thereby, the heat retention property can be improved. The value of X is specified by the angle range of the curved portion and the number of divisions, and the optimum value is set according to the shape of the duct body, so that the occurrence of a gap can be prevented. 3) The heat insulating material is composed of glass wool folded in a zigzag shape with an adhesive and having a paper or cloth surface material such as aluminum glass cloth attached to one side of the heat insulating material. It is possible to reduce weight, prevent dust generation, and improve sound absorption. 4) A duct on which a heat insulating material has been applied by completely cutting the above heat insulating material with a predetermined cutting line or dividing it into undivided parts to make a divided piece, and winding and attaching the divided piece to the corresponding duct piece of the duct body. Is formed. The duct is completely kept warm without a gap. 5) When the divided piece is wound and attached to the duct piece, for example, when the wide portion of the divided piece is aligned with the outermost side of the duct piece and the narrow portion of the divided piece is aligned with the innermost side of the duct piece. In particular, there is no gap between the adjacent divided pieces. As a result, it is possible to improve the heat retention and the appearance. 6) Since the heat insulating material is not cut into pieces when it is not cut, the transportability and handleability can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an external shape of a heat insulating material of the present invention.

FIG. 2 is a perspective view showing the shape of one divided piece obtained by cutting the heat insulating material of the present invention along a predetermined cutting line and the inclined surface thereof.

FIG. 3 is a side view showing a partial shape of a duct body to 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 in which the vertical and horizontal dimensions are specified.

FIG. 5 is a plan view showing a divided piece divided by a cutting line of the heat insulating material of the present invention.

FIG. 6 is a plan view for specifically displaying the narrowest part and the widest part of the divided piece of FIG.

7 is a side view showing the appearance of a duct in which the divided piece shown in FIG. 6 is wound and attached to the duct body of FIG.

FIG. 8 is a side view showing a gap seal for sealing the 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 of applying a heat insulating material 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.

11 is a plan view showing a method of correcting the auxiliary cutting line of FIG.

FIG. 12 is a perspective view showing an external shape of a heat insulating material according to another embodiment.

FIG. 13 is a perspective view showing the external shape of the heat insulating material in the state during transportation according to the embodiment.

FIG. 14 is a plan view of members constituting a duct curved portion heat insulating material according to another embodiment.

FIG. 15 is a plan view showing a state where the members of FIG. 12 are attached to each other.

FIG. 16 is a side view showing the appearance of a conventional split-type duct.

FIG. 17 is a plan view showing a conventional heat insulating material cutting method.

[Explanation of symbols]

 1 Heat insulation material 1A Divided piece 1B Divided piece 1C Divided piece 1D Divided piece 2 Heat insulation member 3 Surface material 4 Cutting line 4'Cutting auxiliary line 4 "Cutting line 5 Inclined surface 5'Inclined surface 5" Inclined surface 5A Vertical surface 6 Duct Body 6A Duct piece 6B Duct piece 6C Duct piece 6D Duct piece 7 Gap seal 8 End material

Claims (10)

[Claims] 1. A laminated body comprising a heat insulating member and at least one surface material adhered to one surface thereof, wherein the duct diameter (D), the duct bending radius (R), the bending portion angle range (θ), and the division number ( n), a substantially sine curve obtained by a cutting line having a substantially sine curve specified from the value of the thickness (t) of the laminated body, or a size and a correction value of a back portion and a belly portion of the duct divided into n. The material of the laminate having vertical and horizontal dimensions specified from each value by a curved cutting line is cut into divided pieces of the number of divisions, and the cutting line is the wide portion of each adjacent divided piece. A heat insulation material for a curved portion of a duct, characterized in that narrow width portions alternately correspond to each other, and at least the cut material is not formed on the material by cutting. 2. An end face on a cutting side of a divided piece having different width dimensions along the longitudinal direction by cutting with the substantially sine curve is inclined from a vertical line from the narrowest portion of the width dimension to the widest portion. It gradually changes from the (−) inclined surface of the inclination angle X inclined in the direction of decreasing the 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. The duct curved portion heat insulating material according to claim 1, which forms a vertical surface. 3. An inclination angle X of the (+) and (−) inclined surfaces.
Is θ / 2 (n-1), The duct curved portion heat insulating material according to claim 2. 4. The heat insulation member for a curved portion of a duct according to claim 1, wherein the heat insulation member is made of glass wool folded in a zigzag shape with an adhesive, and the front material is paper or cloth. Material. 5. The cutting piece in which the narrowest part and the widest part of the divided piece are alternately located in the central part of the material, wherein the divided piece in which the narrowest part is located in the central part of the material is The duct according to any one of claims 1 to 4, wherein further cutting is performed at the narrowest portion to connect the widest portions to each other, and the widest portions of all the divided pieces are fixed by a connecting material. Insulation material for curved parts. 6. The duct curved portion heat retaining material according to claim 1, wherein the laminated body has only one surface covering material left uncut. 7. The duct curved portion heat insulating material according to claim 1, wherein the material is composed of a plurality of divided members. 8. A heat insulating material is applied to the outer surface of the duct, and the duct diameter (D), the duct bending radius (R), and the bending portion angle range (θ).
In the duct, the heat insulating material is a laminated body including a heat insulating member and a front material adhered to at least one surface thereof, the duct diameter (D), the duct bending radius (R), and the bending portion angle range ( θ), the number of divisions (n), and the thickness (t) of the laminated body, and the dimensions and correction values of the back and belly portions of the duct divided by the substantially sinusoidal cutting line. It consists of divided pieces that are completely cut by a substantially sinusoidal cutting line obtained from the above, or only one surface covering material is left uncut, and the divided pieces are necessary for the duct part corresponding to the divided piece. A duct with a heat insulating material, characterized in that the widest part of each of them conforms to the outermost side of the duct to be adhered. 9. A laminated body in which a surface covering 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), the duct diameter ( D), duct bending radius (R), bending portion angle range (θ), number of divisions (n), thickness of the laminate (t), or a substantially sine curve cutting line or n divisions. The divided piece completely cut by the substantially sinusoidal cutting line obtained from the dimensions of the back and belly portions of the duct and the correction value or the one in which only the surface covering material on one side is left uncut A method of constructing a duct corresponding to a duct, comprising a first step of preparing a laminate having vertical and horizontal dimensions specified by the respective values, and cutting the sine curve on one side of the laminate. The second step of displaying lines and the narrowest part of each heat insulating material divided piece Toward Luo widest portion, the inclination angle X of the cut surface (-) θ / 2 from the (n-1) (+)
The third procedure of cutting along the cutting line while changing the range to θ / 2 (n-1), and the divided piece cut as necessary to the duct portion to which the divided piece corresponds, the wide portion thereof. Is applied to the outermost side of the duct, and the fourth step of applying the narrowed part to the innermost side is performed. 10. The cutting in the third procedure is performed while leaving only the front surface material of one side of the heat insulating material uncut, and the uncut in the deposition in the fourth procedure is uncut. The method for constructing a duct provided with a heat insulating material according to claim 9, wherein the portion is cut.