JP3005033U - Thermal insulation cover of atypical duct for air conditioning and atypical duct for air conditioning with thermal cover - Google Patents

Abstract

(57) [Summary] [Purpose] A low-cost heat insulation cover for atypical ducts for air conditioning that eliminates the drawbacks of the conventional technology, simplifies heat insulation coating work, and can be industrially mass-produced, and air conditioning with this heat insulation cover. An object is to provide a modified pipe duct for use. A modified air-conditioning duct duct with a heat-insulating cover according to the present invention is formed mainly of glass wool, and has an inner surface shape that substantially corresponds to the outer surface shape of the modified tube portion of the air-conditioning variant tube duct to be kept warm. It is characterized in that it is formed of a molded product which is capable of substantially covering the atypical tube portion, and the atypical tube duct for air conditioning with a heat-insulating cover of the present invention is an atypical tube duct for air conditioning. It is characterized in that the deformed tube portion of (3) is substantially covered with the heat insulating cover.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heat insulation cover for a modified air duct for air conditioning and a modified air duct for air conditioning with this heat insulation cover.

[0002]

[Prior art]

 Conventionally, the heat insulation cover of the atypical pipe part of the air-conditioning atypical duct is, for example, wound around the atypical pipe portion of the air-conditioning atypical duct duct with a thermal insulation band made of inorganic fibers such as glass wool and rock wool. For a method of further covering or for a heat insulating cover applied to a bent pipe part, a heat insulating cylinder formed in a straight tube shape in advance has a cross section with a predetermined angle with respect to the axis so as to match the shape of the bent pipe. A method of coating a bent pipe by sequentially joining cylindrical bodies having fan-shaped side faces obtained by cutting along a line with a bow or the like in a so-called shrimp joint shape (see Japanese Utility Model Laid-Open No. 2-113094). ) Was known.

[0003]

[Problems to be solved by the device]

 However, the heat insulation cover according to the conventional method as described above has a problem that the process until completion is complicated and requires a lot of labor and skill, and depending on the degree of skill, defective construction is likely to occur. However, this difficulty is extremely serious, especially in recent years due to the lack of skilled workers and the shortening of the building construction period, making it difficult to carry out heat insulation coating work at building construction sites. be able to.

Further, in Japanese Unexamined Patent Publication No. 280689/1993, a mat-shaped raw cotton is wound around a mandrel to form a core-type product, which is heat-dried while being press-molded by upper and lower dies and then divided into core-type products. A cylindrical molded body obtained by forming a portion and removing the mandrel is described. However, in this known technique, it is necessary to press the raw cotton with a press roller while rotating the mandrel to laminate and wind. However, it is difficult to manufacture not only tubular molded bodies for curved pipes and branch pipes but also tubular molded bodies for single-sided pipes.

The present invention solves the above-mentioned drawbacks of the prior art, simplifies the heat insulation covering work, and enables the industrial mass production of a low-cost heat insulation cover for atypical ducts for air conditioning and this heat insulation cover. It is an object of the present invention to provide a modified duct for air conditioning.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the air-conditioning irregular pipe duct with heat insulation cover adopted by the present invention is formed mainly of glass wool, and substantially corresponds to the outer surface shape of the irregular pipe portion of the air-conditioning irregular pipe duct to be kept warm. And a heat-insulating cover-equipped air conditioner according to the present invention. The modified duct duct for air conditioning is characterized in that the modified duct portion of the modified duct for air conditioning is substantially covered with the heat insulating cover.

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a circular duct bend as an example of a modified pipe portion of a modified air duct for air conditioning according to an example of a heat insulation cover of the modified air duct for air conditioning of the present invention, which comprises a pair of molded products 1 and 2. 1 shows a state in which the pipe 3 is covered to form a modified air-conditioning duct duct with a heat insulating cover according to the present invention, and the pair of molded products 1 and 2 are mainly molded from glass wool.

As a matter of course, the modified pipe of the modified air-conditioning duct for the heat insulation cover of the present invention is not limited to the bend pipe, and other bent pipes such as S pipe or T pipe, Branch pipes such as Y pipes and cross pipes, and single-sided pipes (reducers) are included.

As described above, the molded articles 1 and 2 formed mainly of glass wool have an inner surface shape that substantially corresponds to the outer surface shape of the bend pipe 3 that is the deformed pipe portion of the air-conditioning irregular pipe duct to be kept warm. The term “substantially corresponds to the outer surface shape” as used herein means, for example, with respect to the molded product 1, when the molded product 1 is applied to the bend pipe 3, the center of the bend pipe 3 other than both ends thereof is The molded product 1 can be brought into contact with the upper part of the portion with no gap or with a slight gap, and the same applies to the molded product 2. Therefore, if the cost and practicality are ignored, there is no limit to the outer surface shape of the molded products 1 and 2.

Of course, the above-mentioned molded products 1 and 2 must be capable of covering the central portion of the bend pipe 3 other than the both end portions thereof substantially without any gap in a combined state, but it is not strictly necessary to form the gap. However, if the joint between the molded products 1 and 2 is sealed and protected by a tape-shaped material, some gap can be ignored.

Further, as shown in FIG. 1, when the bend pipe 3 has a convex portion 4 such as a protrusion due to reinforcement such as a vertical seam or a rib, the bend pipe 3 is covered with the molded products 1 and 2. However, the outer surface of the bend pipe 3 and the inner surfaces of the molded products 1 and 2 do not adhere to each other, which may reduce the heat retention effect. In such a case, the convex surface is formed on the inner surfaces of the molded products 1 and 2. A recess 5 corresponding to the portion 4 may be provided.

As the shape and the number of the above-mentioned molded products, a cylindrical body having an inner surface shape substantially corresponding to the outer surface shape of the bend pipe 3 to be kept warm is assumed, and this cylindrical body is cut along an appropriate plane. The number may be any number corresponding to the above shape, but as shown in FIG. 1, the one corresponding to the shape obtained by dividing the tubular body into two in a plane including the central axis of the bend pipe 3 is preferable. Yes.

In the above-mentioned molded products 1 and 2, for example, glass short fibers are put together with a binder between male and female molds corresponding to the shape of the molded product as described above, and the glass short fibers are bonded by the binder. It can be manufactured by heating and pressurizing at about 200 to 250 ° C. for about 2 to 5 minutes so as to have a predetermined thickness while binding.

The fiber diameter of the glass fiber is not particularly limited. However, if the fiber diameter is too large, hand pain may be felt during handling, and it may be a factor that reduces the heat insulation performance. On the other hand, if the fiber diameter is too small, there is a problem that the manufacturing cost becomes high, which is not preferable. From these viewpoints, the fiber diameter is usually 3 to 25 μm, preferably 5 to 10 μm. Can be said to be suitable.

As the main component of the binder used for binding the glass fiber, a well-known one such as thermosetting resin can be used, and examples thereof include phenol resin, urine resin, melamine resin, polyester. Although an organic binder such as a resin can be used without any problems, a phenol resin-based binder is particularly preferable in terms of cost, heat resistance, nonflammability, weather resistance and the like.

[0017] The density of the glass wool mat forming the molded article 1 and 2, 16~120 kg / m ^3, preferably 32~96kg / m ^3, a thickness 5 to 100 mm, the range preferably of 15~50mm It is practical in terms of heat insulating effect and handleability that the amount of binder attached to glass wool is 3 to 30% by weight, preferably 5 to 15% by weight.

Further, it goes without saying that the above-mentioned molded products 1 and 2 may be preliminarily molded in half or may be obtained by cutting a cylindrical molded product in half.

On the other hand, a coating material may be attached to the outer surfaces of the molded articles 1 and 2 to improve heat insulation performance, prevent moisture permeation, prevent scattering of glass fibers, and prevent fuzzing. Examples include aluminum foil, aluminum kraft paper, aluminum foil reinforced with glass fiber cloth or glass fiber scrim, and further laminated with resin, polyester film, Teflon film, etc. be able to.

To apply the above-mentioned coating material to the outer surfaces of the molded products 1 and 2, the adhesive material such as a hot melt film is sandwiched and laminated with an uncured glass wool mat, and the mixture is directly placed between the male mold and the female mold. The glass wool may be integrally molded with the glass wool, or the glass wool-only molded product may be coated with an adhesive, or a hot melt film may be used to apply the coating material in the post-molding process. .

FIG. 2 shows a bend pipe 3 as an example of an irregular pipe portion of an irregular pipe duct for air conditioning by an example of the heat insulating cover of the present invention composed of a pair of molded products 1 and 2 configured as described above. FIG. 3 shows a state in which the air-conditioning irregular-shaped duct with a heat-insulating cover of the present invention is covered, and the molded products 1 and 2 are covered on the bend pipe 3 in the direction of the arrow shown in FIG. The heat insulating cover and the bend pipe 3 are integrated by adhering and fixing an aluminum adhesive tape 7 or the like to the plate 6.

[0022]

【Example】

 Examples of the present invention will be shown below, but the present invention is not limited to the examples.

Example 1 An uncured glass wool mat having a fiber diameter of 7.5 μm, a binder attachment rate of 10% by weight, and a basis weight of 1000 g / m ² was reinforced with a glass fiber scrim and had a thickness of 20 μ. It is laminated with hot melt film) and set between male and female molds, and it is molded by heating and pressing, and has the same shape as that shown in FIGS. / M ³ , wall thickness 25 mm, inner diameter 200 mm, virtual center axis radius 200 mm, a pair of molded products constituting a heat insulating cover for a bend pipe of a modified air duct for air conditioning was prepared. Using this molded product, the aluminum adhesive tape reinforced with glass fiber scrim is covered on both sides of the air-conditioning irregular pipe duct bend with an outer diameter of 200 mm and a virtual center axis radius of 200 mm, and there is no gap on the joint surface of the heat insulation cover. By sticking in this manner, the heat insulation cover and the bend pipe were fixed and integrated, and a bend pipe of a modified air-conditioning duct duct with a heat insulation cover having the same shape as that shown in FIG. 2 was produced.

Example 2 As shown in FIG. 3, the same glass wool mat and aluminum foil as in Example 1 were laminated, set between male and female molds, and molded by heating and pressing to give a density of 40 kg / m ^3. A pair of molded products 9 and 10 constituting a heat insulating cover of the T pipe 8 of the air-conditioning irregular pipe duct having a wall thickness of 25 mm and an inner diameter of 200 mm were produced. Using this, the T-tube 8 of the air conditioning duct with an outer diameter of 200 mm is covered from both sides, and the same aluminum adhesive tape 11 as in Example 1 is attached so that no gap is formed on the joint surface of the heat-insulating cover, thereby keeping the heat-insulating property. By fixing and integrating the cover and the T-tube, a T-tube 12 of a modified air-conditioning duct with a heat insulating cover was produced.

Example 3 As shown in FIG. 4, the same glass wool mat and aluminum foil as in Example 1 were laminated, set between male and female molds, and molded by heating and pressing to give a density of 40 kg / m ^3. Then, a pair of molded products 14 and 15 constituting a heat insulating cover of the reducer 13 of the air-conditioning irregular-shaped duct having a wall thickness of 25 mm, one inner diameter of 150 mm, and the other inner diameter of 350 mm were produced. By using this, the reducer 13 of the air-conditioning irregular-shaped duct having the outer diameter of 150 mm on the one side and the diameter of 350 mm on the other side is covered from both sides, so that the same aluminum adhesive tape 16 as that of the first embodiment does not cause a gap on the joint surface of the heat insulating cover. Then, the heat insulation cover and the reducer were fixed and integrated with each other to produce a reducer 17 for atypical duct for air conditioning with a heat insulation cover.

Comparative Example As shown in FIGS. 5 and 6, a straight tubular so-called heat-insulating cylinder having a density of 40 kg / m ³ , a thickness of 25 mm, and an inner diameter of 200 mm formed by using the same glass wool mat as in Example 1. The same glass fiber reinforced aluminum foil as in Example 1 was sandwiched between the hot melt films and heated and adhered to the outer surface to form a heat insulating cylinder 18 with a jacket material, and the angle between both opening surfaces was 90 degrees. In order to cover a round iron plate bend pipe 19 having an outer diameter of 200 mm and a three-piece plate, first, the heat insulating cylinder 18 is at an angle equal to the angle of the joint line of the three-piece bend with respect to its central axis, 67.5 degrees. And 112.5 degrees to obtain three pieces of molded product pieces 20, 21 and 22, and these molded product pieces 20, 21 and 22 are each divided into two by a plane including the central axis, and molded products are formed. 20 ', 20 ", 21', 1 ", 22 ', 22" was fabricated.

Next, these molded products 20 ′, 20 ″, 21 ′, 21 ″, 22 ′, 22 ″ are carried into a construction site, and the outer surface of the round iron plate bend pipe 19 already constructed by duct construction. The molded products 20 ′, 20 ″, 21 ′, 21 ″, 22 ′, 22 ″ are sequentially coated along with the aluminum adhesive tape 23 similar to that of the first embodiment. Then, they were stuck together and fixed, and heat insulation work was performed.

As is apparent from the above, the heat insulating cover according to the embodiment of the present invention is composed of a pair of molded products, but the heat insulating cover according to the comparative example requires as many as 6 molded products, which are required for its manufacture. The labor and labor required for the heat insulation coating process were required to be about three times higher in the comparative example, assuming that the present invention is 1. In addition, the number of seams of the molded product is two in the embodiment of the present invention, while it is as many as eight in the comparative example, so not only the amount of aluminum adhesive tape used increases, but also a gap is generated. It was confirmed that the heat insulation cover according to the embodiment of the present invention has more merit in terms of cost and quality.

[0029]

[Effect of device]

The heat insulating cover of the present invention is formed mainly of glass wool and has an inner surface shape that substantially corresponds to the outer surface shape of the deformed pipe portion of the air-conditioning deformed pipe duct to be kept warm. Since it is made of a molded product that can be covered in the interior of the duct, it can cover the irregular pipe section, which is the most complicated shape of the duct, without any gaps, so the heat retention effect is also increased and the quality of the construction work is improved. In addition, the glass wool used for the conventional winding type heat insulation work was a low density (10 to 32 kg / m ³ ) product that is easily elastically deformed. A high-density (32 to 96 kg / m ³ ) glass wool molded product can be covered with a heat-retaining cover, and the heat-retaining property is also improved.

Further, since the odd-shaped air-conditioning duct duct with a heat-insulating cover of the present invention is a duct that has been heat-insulated with the heat-insulating cover of the present invention in a factory in advance, it is possible to perform heat-insulating work at the same time as the duct construction work, It is possible to deal with shortening of the building construction period, and the heat insulation covering work itself at the building construction site is not necessary, so it is not necessary to have a skilled worker for heat insulation work, and it is possible to cope with the shortage of skilled workers. You can

[Brief description of drawings]

FIG. 1 is a view showing an example of a heat insulation cover of a modified air duct for air conditioning of the present invention, which covers a modified pipe portion of a modified duct for air conditioning,
FIG. 3 is a side view showing a state in which a modified duct for air conditioning with a heat insulating cover according to the present invention is about to be used.

FIG. 2 is a side view showing an example of a modified air-conditioning duct with a heat insulating cover according to the present invention.

FIG. 3 is a side view showing another example of the irregular pipe duct for air conditioning with a heat insulating cover of the present invention.

FIG. 4 is a side view showing another example of the air-conditioning irregular pipe duct with a heat insulation cover of the present invention.

FIG. 5 is a side view showing an example of a molded product forming a heat insulating cover of a conventional air-conditioning irregular-shaped duct.

FIG. 6 is a side view showing an example of construction of a heat insulating cover of a conventional duct for air conditioning.

[Explanation of symbols]

 1, 2 Molded product 3 Bend pipe 7 Aluminum adhesive tape 8 T pipe 9, 10 Molded product 13 One-sided drop pipe 14, 15 Molded product 19 Bend pipe 20, 21, 22 Molded product piece

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Ichitaka Kikumoto, 12-12 Kitahorie, Nishi-ku, Osaka-shi, Osaka Prefecture Kurimoto Iron Works Co., Ltd. (72) Takeshi Fujii 1 Kitahorie, Nishi-ku, Osaka-shi, Osaka 12th-19th Kurimoto Iron Works Co., Ltd.

Claims (9)

[Scope of utility model registration request] 1. Molded mainly from glass wool,
A molded product having an inner surface shape substantially corresponding to the outer surface shape of the modified pipe portion of the modified air-conditioning duct to be kept warm, and being combined so as to substantially cover the modified pipe portion. A heat insulation cover for atypical ducts for air conditioning. 2. The heat insulation cover for an irregular air duct for air conditioning according to claim 1, wherein the irregular pipe portion of the irregular air duct for air conditioning to be kept warm is one of a bent pipe, a branch pipe and a one-sided pipe. 3. The air conditioning variant according to claim 1, wherein the molded article has a recess substantially corresponding to the protrusion formed on the outer surface of the variant tube portion of the air conditioning variant tube duct to be kept warm. Thermal insulation cover for pipe duct. 4. A molded article comprising a cylindrical body having an inner surface shape substantially corresponding to the outer surface shape of the modified tube portion of the modified air-conditioning tube duct to be kept warm. The heat insulation cover for an irregular pipe duct for air conditioning according to claim 1, which has a divided shape. 5. The heat insulation cover for an irregular pipe duct for air conditioning according to claim 1, wherein the molded product has a coating material on its outer surface. 6. The heat insulation cover for an irregular air-conditioning duct for air conditioning according to claim 1, wherein the molded product is obtained by placing an uncured glass wool mat between molds and heating and pressing to mold. 7. The air-conditioning irregular pipe duct according to claim 5, wherein the molded product is obtained by placing an uncured glass wool mat and a covering material between molds and heating and pressurizing the molded product. Insulation cover. 8. An atypical pipe duct for air conditioning with a heat insulating cover, characterized in that the atypical pipe portion of the atypical pipe duct for air conditioning is substantially covered by the heat insulating cover according to any one of claims 1 to 7. 9. The deformed pipe portion of the deformed pipe for air conditioning is substantially covered with the heat insulating cover according to any one of claims 1 to 7, and a joint portion of a molded product constituting the heat insulating cover is a tape-shaped material. A unique duct for air conditioning with a heat insulation cover that is protected by.