JP4172373B2 - Laying a hot water mat for floor heating - Google Patents

Description

The present invention relates to a method for laying hot water mat for floor heating on the floor of the building.

  Hot water mats for floor heating include an on-floor installation type installed on a floor structure such as plywood and concrete slab, and an underfloor installation type installed between joists under the floor.

  Among these, in the case of the floor installation type, the heat capacity of the concrete slab is large, and it is generally considered that about 20% of the total heat released from the hot water mat is taken to the slab side. For this reason, it takes time to raise the temperature of the floor surface and the running cost at the time of floor heating increases, so that it has been conventionally proposed to put a heat insulating material on the slab.

  However, in consideration of the habitability, it is necessary to make the height of the floor coincide with the height of the floor of the other living room, and in most cases, a heat insulating material having a sufficient thickness cannot be installed. In particular, in the case of apartment houses, most of them are concrete slab floors, but it has been difficult to apply a sufficiently thick heat insulating material to such houses.

  Therefore, in order to improve the thermal efficiency without greatly increasing the thickness of the floor, a hot water mat for floor heating to which a vacuum mat having a high thermal insulation performance is applied as a heat insulating material, and a laying method thereof have been proposed (for example, Patent Document 1). reference).

Further, according to Patent Document 1, in order to protect the vacuum mat and to suppress the deterioration of the heat insulating function due to the compression deformation of the vacuum mat, a U-shaped or hollow hard frame is bonded to the outside of the vacuum mat. Has been proposed.
JP 2002-206759 A

  A conventional method for laying a hot water mat for floor heating is to attach a vacuum mat on a floor structure of a building, install a hot water mat body with a hot water pipe disposed on the vacuum mat, and place the hot water mat on the hot water mat body. Finishing materials such as flooring materials are installed.

  Therefore, when laying a vacuum mat, it is necessary to eliminate as much as possible foreign matter and fine convex objects at the laying place. If these operations are neglected, a vacuum mat outer packaging material made of a plastic laminate film will be required. It was easily broken and the heat insulating performance of the vacuum mat could be lowered.

  Furthermore, even when laying is completed without breaking the vacuum mat, the handling and laying work of the vacuum mat must be carried out with the latest care, which makes the workability very poor. It was.

  In addition, in order to improve these, even when a second heat insulating layer is applied to the back of the vacuum mat and the vacuum mat is protected and laid, it is necessary to lay a hot water mat on the vacuum mat in the field construction. In some cases, fine foreign objects are caught during the operation, and the vacuum mat may be broken.

  Furthermore, in order to suppress this, it has been proposed to cover the entire outer surface of the vacuum mat with a hollow hard frame, but these have been impractical and have led to a reduction in cost and are not practical.

  In addition, since the conventional vacuum mat is inferior in load resistance, it is necessary to lay a vacuum mat between each small joist, and if the vacuum mat is not applied in such a form, the vacuum mat will be compressed and deformed over time. However, the heat insulating performance of the vacuum mat is lowered and the floor is distorted.

The present invention solves the conventional problems, improves the thermal efficiency without greatly increasing the thickness of the floor, and further breaks the vacuum mat made of an outer packaging material that is easily torn by piercing or the like even on site construction. excellent handling property without, it can be easily laid, furthermore, there is provided a laying method capable floor heating hot water mat can be achieved in this low cost.

In view of the above problems, laying technique for the floor heating hot water mat of the present invention, a hot water pipe, and the mat body formed of a pipe groove to route the hot water pipe, a vacuum insulation material that will be affixed to the bottom of said mat body constitute a hot water mat unit by integrally laminating a protective material made of a rigid urethane foam provided by integral foaming of the pre-said vacuum heat insulating material on the back side of the vacuum heat insulating material, then, building floor structure The hot water mat unit is stuck on top, and then a finishing material such as a flooring material is installed on the hot water mat unit via a heat transfer sheet.

  By applying a vacuum heat insulating material excellent in heat insulating performance, the amount of heat transmitted to the under floor side can be reduced, the heat efficiency can be improved, energy saving can be achieved, and the set temperature can be reached in a short time.

  Furthermore, in the case of on-site construction, the hot water mat, the vacuum heat insulating material, and the protective material are configured in advance as an integrated hot water mat unit with an adhesive, double-sided tape, etc. There are no problems such as minute foreign matter or bag breakage due to poor handling, and laying can be easily performed even in the case of on-site enforcement.

In addition, since it is integrally foamed with a hard urethane foam that uses a vacuum heat insulating material as a protective material, it is not necessary to bond the hard urethane foam that is the protective material and the vacuum heat insulating material, and it is possible to efficiently form a hot water mat unit. It becomes. Moreover, the heat insulation performance can be further improved, and the amount of heat transmitted to the lower floor side can be further reduced.

As is apparent from the above description, the present invention can greatly reduce the amount of heat transmitted to the floor side by applying a vacuum heat insulating material excellent in heat insulating performance, improve thermal efficiency, and achieve energy saving. It is possible to reach the set temperature in a short time.

  Furthermore, in the case of on-site construction, since the hot water mat, the vacuum heat insulating material, and the protective material are preliminarily integrated with an adhesive, double-sided tape, etc. There is no problem that the vacuum heat insulating material breaks due to poor handling, and laying can be easily performed at the time of on-site enforcement.

In addition, since it is integrally foamed with a hard urethane foam that uses vacuum insulation as a protective material, there is no need to bond the hard urethane foam, which is a protective material, with the vacuum insulation, and it is possible to efficiently form a hot water mat unit. It becomes. Moreover, the heat insulation performance can be further improved, and the amount of heat transmitted to the lower floor side can be further reduced.

In view of the above problems, laying technique for the floor heating hot water mat according to claim 1 of the present invention, a hot water pipe, and the mat body formed of a pipe groove to route the hot water pipe, affixed to the bottom of said mat body a vacuum heat insulating material is Ru is, the a protective material made of a rigid urethane foam provided by integral foaming of the back in the vacuum insulation material of the vacuum heat insulating material by laminating and integrating constitutes a hot water mat unit in advance, then The hot water mat unit is stuck on the floor structure of a building, and then a finishing material such as a flooring material is installed on the hot water mat unit via a heat transfer sheet.

  By applying a vacuum heat insulating material excellent in heat insulating performance, the amount of heat transmitted to the under floor side can be reduced, the heat efficiency can be improved, energy saving can be achieved, and the set temperature can be reached in a short time.

  Furthermore, in the case of on-site construction, the hot water mat, the vacuum heat insulating material, and the protective material are configured in advance as an integrated hot water mat unit with an adhesive, double-sided tape, etc. There are no problems such as minute foreign matter or bag breakage due to poor handling, and laying can be easily performed even in the case of on-site enforcement.

  Since foaming is integrated with a hard urethane foam that uses a vacuum heat insulating material as a protective material, there is no need to bond the hard urethane foam that is the protective material and the vacuum heat insulating material, and it is possible to efficiently form a hot water mat unit. . Moreover, the heat insulation performance can be further improved, and the amount of heat transmitted to the lower floor side can be further reduced.

In the laying method of the hot water mat for floor heating according to claim 2 of the present invention, the vacuum heat insulating material applied as the heat insulating material for the hot water mat is composed of dry silica powder, inorganic fibers, and conductive powder. And a covering material covering the core material.

  The vacuum insulation material uses fine dry silica powder as the core material, so the pressure dependence of the thermal conductivity is small, and even with a thin vacuum insulation material, the insulation performance is excellent over a long period of time. It will be. Furthermore, by applying conductive powder to the core material, dry silica agglomerates are crushed and the heat conduction of the solid material of the core material is reduced. The running cost can achieve excellent energy saving in the initial and long term. Furthermore, since the inorganic fiber is applied to the core material, the core material has excellent load resistance, and the floor surface of the floor heating finish material does not deform without compressive deformation over a long period of time.

In the method for laying a hot water mat for floor heating according to claim 3 of the present invention, the vacuum heat insulating material applied as the heat insulating material for the hot water mat is composed of dry silica powder, inorganic fibers, and conductive powder. And a jacket material covering the core material, and a surface layer of the core material includes a binder component.

  Since a high-strength outer shell body is formed on the surface portion of the core material constituting the vacuum heat insulating material, the load resistance of the core material is further improved. Therefore, in the past, when applying a U-shaped or hollow hard frame or applying a small joist on the outside of the vacuum heat insulating material to improve load resistance, these are not applied. In both cases, the heat insulation performance of the vacuum heat insulating material is maintained over time without causing compressive deformation of the vacuum heat insulating material. At the same time, since there is no compression deformation of the vacuum heat insulating material, there is no distortion of the finishing material floor.

Hereinafter, an embodiment of a method for laying a hot water mat for floor heating according to the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a cross-sectional view showing a hot water mat for floor heating according to Embodiment 1 of the present invention and an installation state thereof. 2 is a cross-sectional view of a hot water mat unit used in the hot water mat for floor heating in FIG.

  The hot water mat unit 1 includes a mat body 2, a vacuum heat insulating material 3, and a protective material 4 that are laminated and integrated with each other with an adhesive. The hot water mat unit 1 is laid on an existing floor 5. An aluminum sheet to be a heat transfer sheet 6 is pasted on the hot water mat unit 1, and a finishing material 7 such as flooring is installed thereon to form a floor heating system.

  The mat body 2 is formed of a foam heat insulating material such as foamed polystyrene or foamed polypropylene. A groove 8 is formed on the upper surface side of the mat body 2, and a hot water pipe 9 is disposed in the groove 8.

  As an example of this warm water mat for floor heating, the mat body 2 has a thickness of 12 mm, and the hot water pipe 9 is made of polypropylene and has an outer diameter of 8 mm and an inner diameter of 5 mm. In addition, the vacuum heat insulating material 3 is formed by covering a core material of a porous body with an outer cover material made of a laminate film, and sealing the inside by evacuating and having a thickness of 3 mm. The protective material 4 is a high-density foamed polyethylene sheet having a thickness of 5 mm.

  The protective material 4 used for the hot water mat unit 1 protects the vacuum heat insulating material 3 from being broken by fine and hard foreign matters and dust, or fine convex objects on the floor surface. It is not particularly specified if it is suitable for. Specifically, a resin sheet made of polyethylene, polypropylene, polystyrene, ABS, or the like, a foamed sheet made of a foam of the material, a rigid urethane foam plate, a metal thin plate, paper, a composite material thereof, or the like can be used. The thickness of the protective material 4 depends on the material of the protective material 4 to be used and the surface state of the floor 5 on which the hot water mat unit is laid.

Furthermore, the vacuum heat insulating material 3 can be laminated with a hard urethane foam that is integrally foamed with a hard urethane foam in advance to form a vacuum heat insulating material and a protective urethane material. This can be further improved, and it is not necessary to bond the hard urethane foam serving as the protective material 4 and the vacuum heat insulating material 3, so that a hot water mat unit can be efficiently formed.

  Next, the vacuum heat insulating material 3 which comprises a warm water mat unit is demonstrated.

  FIG. 3 is a cross-sectional view of a vacuum heat insulating material used in the hot water mat unit of FIG.

  In FIG. 3, the vacuum heat insulating material 3 includes a core material 11 made of Aerosil 380 (manufactured by Nippon Aerosil) as dry silica powder, glass wool as inorganic fiber, and carbon black as conductive powder. 12 and vacuum sealed so that the degree of internal vacuum is about 100 Pa.

  The jacket material 12 is formed by forming two laminated films into a bag shape. Of these, the first laminated film is a 50-μm-thick linear low-density polyethylene film on the heat-sealing layer, and a 15-μm-thick ethylene-polyvinyl alcohol copolymer film on the gas barrier layer. And a film obtained by laminating aluminum vapor-deposited surfaces to each other and a film obtained by vapor-depositing aluminum having a film thickness of 45 nm on a polyethylene terephthalate film having a thickness of 12 μm. The second laminate film is composed of a linear low-density polyethylene film having a thickness of 50 μm for the heat-sealing layer, an aluminum foil having a thickness of 6 μm for the gas barrier layer, and a nylon film having a thickness of 25 μm for the protective layer.

  Thus, the gas barrier property of the vacuum heat insulating material and aluminum can be obtained by combining the first laminate film in which the aluminum vapor deposition film is applied to the gas barrier layer and the second laminate film in which the aluminum foil is applied to the gas barrier layer. It is possible to suppress both heat leaks transmitted through the foil.

  The jacket material 12 constituting this vacuum heat insulating material has at least a gas barrier layer and a heat-sealing layer, and can be constituted by a plastic laminate film provided with a surface protective layer or the like as required.

  The heat conductivity of the vacuum heat insulating material thus produced was 0.005 W / mK at an average temperature of 24 ° C., and had a heat insulating performance about five times that of a general-purpose hard urethane foam.

  Next, a method of laying a hot water mat on a plywood floor will be described with reference to FIG.

  First, the hot water mat unit 1 is laid on the floor 5. The hot water mat unit 1 is fixed to the floor 5 with an adhesive or a screw. In addition, when using a screw, the mark which means that a screw stop is clearly specified in the location where a vacuum heat insulating material does not exist previously, and the part can be fixed with a screw. Thereby, the bag breaking of a vacuum heat insulating material can be suppressed.

  On the warm water mat unit 1, an aluminum sheet of the heat transfer sheet 6 is attached to one surface with an adhesive or the like. For example, the thickness of the aluminum sheet is about 50 μm. By sticking this aluminum sheet, the amount of heat generated from the hot water mat 2 can be uniformly diffused on the surface. A finishing material 7 such as a flooring material is laid and fixed on the aluminum sheet.

  Similarly, when the hot water mat is installed on the concrete slab, the hot water mat unit 1 is laid on the concrete slab and fixed to the concrete slab with a concrete screw or the like by the above-described method. Then, an aluminum sheet is stuck on the hot water mat unit 1. A flooring material is set on the aluminum sheet and fixed with screws or the like by the above-described method.

  Therefore, even when vacuum insulation made of plastic laminate film, which is weak against piercing with sharp or fine foreign matter or dust, is applied as insulation for hot water mat, the vacuum insulation is preliminarily used as hot water mat and protective material. As the hot water mat unit is formed by stacking and integrating, the vacuum heat insulating material does not break during construction on site, and it is also easy to handle, ensuring workability that is the same as before. it can.

  In the conventional floor heating that does not use the hot water mat for floor heating and the vacuum heat insulating material, the running cost was compared by an experiment using an average apartment living as a model.

  As a result, the floor heating hot water mat to which the vacuum heat insulating material is applied has a running cost reduced by about 30% compared to the conventional floor heating. In addition, since the heat transfer to the lower part of the floor is greatly suppressed, it was found that the temperature of the hot water used was 60 ° C., whereas the predetermined floor surface temperature could be secured with 50 ° C. hot water. . Furthermore, it was found that when hot water of 60 ° C. is applied, the set temperature arrival time can be shortened by about 30% at the start-up when using floor heating.

(Embodiment 2)
Only the vacuum heat insulating material 3 was changed with respect to Embodiment 1. FIG. Other aspects are the same as in the first embodiment.

  FIG. 4 is a cross-sectional view of a vacuum heat insulating material used in a hot water mat for floor heating according to Embodiment 2 of the present invention.

  The vacuum heat insulating material 13 includes a structure containing Aerosil 380 (manufactured by Nippon Aerosil) as dry silica powder, glass wool as inorganic fiber, and carbon black as conductive powder, and a binder on the surface layer of the structure. The core material 14 to which starch is applied is covered with a jacket material 15 and is vacuum-sealed so that the internal vacuum degree is about 100 Pa.

  The core material 14 of the vacuum heat insulating material 13 produced by this structure produces the structure which compression-molded the mixture which mixed dry type silica powder, inorganic fiber, and electroconductive powder previously in the sheet form, The structure It is formed by applying starch as a binder to the surface layer of the body. Since the core material 14 is formed with a high-strength thin film layer on the surface layer, the thin film layer has an outer shell action and is excellent in load resistance. Therefore, the vacuum heat insulating material 13 formed from the core material 14 has excellent load resistance.

  Moreover, as a binder of the vacuum heat insulating material 13, a well-known organic and inorganic binder can be utilized. As the organic binder, water-soluble starch, polyvinyl alcohol, methyl cellulose and the like can be used, and as the inorganic binder, water glass, colloidal silica and the like can be applied.

  When the vacuum heat insulating material produced in this way is applied to a warm water mat for floor heating, the core material of the vacuum heat insulating material is excellent in load resistance. Even without applying a small joist, the shape of the vacuum heat insulating material can be maintained, and excellent heat insulating performance can be secured over a long period of time.

  Therefore, such hot water mats for floor heating greatly improve the workability at the time of new construction, and can be applied directly on the existing flooring without peeling off the existing flooring even when applied at the time of renovation. It becomes possible to apply.

  As described above, the present invention can greatly reduce the amount of heat transmitted to the underfloor side, improve the thermal efficiency, achieve energy saving, reach the set temperature in a short time, However, it is possible to easily lay a hot water mat for floor heating without breaking the vacuum heat insulating material due to foreign matter on site or poor handling at the site. Useful for.

Sectional drawing which shows the hot-water mat for floor heating by Embodiment 1 of this invention, and its laying state Sectional drawing of the hot-water mat unit used for the hot-water mat for floor heating of FIG. Sectional drawing of the vacuum heat insulating material used for the hot water mat unit of FIG. Sectional drawing of the vacuum heat insulating material used for the floor heating hot water mat by Embodiment 2 of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hot water mat unit 2 Mat body 3 Vacuum heat insulating material 4 Protective material 5 Floor 6 Heat transfer sheet 7 Finishing material 8 Piping groove 9 Hot water pipe 11 Core material 12 Cover material 13 Vacuum heat insulating material 14 Core material 15 Cover material

Claims (3)

And hot water pipes, and the mat body formed of a pipe groove to route the hot water pipe, a vacuum insulation material that will be affixed to the bottom of the mat body, the integral foaming with the vacuum insulation material on the back of previously the vacuum heat insulating material a protective consisting provided rigid urethane foam material by laminating and integrating constitutes a hot water mat units, then the attached hot water mat units on the floor structure of the building, then the hot water mat unit A method for laying a hot water mat for floor heating in which a finishing material such as a flooring material is installed on a heat transfer sheet. The hot water mat for floor heating according to claim 1, wherein the vacuum heat insulating material comprises a core material composed of dry silica powder, inorganic fibers, and conductive powder, and a covering material covering the core material. Laying method . The vacuum heat insulating material comprises a core material composed of dry silica powder, inorganic fibers, and conductive powder, and a jacket material covering the core material, and a binder component is formed on the surface layer of the core material. A method for laying a hot water mat for floor heating according to claim 1.

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