JP2005249301A - Mat for floor heating - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mat for floor heating capable of developing sound absorbing performance in a wide tone area while maintaining a predetermined thickness. <P>SOLUTION: This mat for floor heating disposed on a floor surface F comprises a heat radiation body 1 and an insulation holding layer 2 preventing heat from being dissipated downward by holding the heat radiation body 1. A first soundproof layer 3 absorbing sound acting thereon from the upper side of the floor surface F and a second soundproof layer 4 absorbing a sound different in tone area from the sound absorbed by the first soundproof layer 3 are installed on the underside of the insulation holding layer 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a floor heating mat that is provided on a floor surface by providing a heat dissipating body, providing a heat insulating holding layer that holds the heat dissipating body and prevents heat dissipation downward.

  Such a floor heating mat is arranged on the floor surface in an integrated state by holding a heat radiator such as a hot water pipe by providing a groove in a heat insulation holding layer made of urethane foam or the like. It is. Here, the heat insulation holding layer is usually placed or bonded directly to the floor surface, and the heat insulation holding layer itself absorbs sound acting from above the floor surface, and the floor surface below the heat radiator. It was expected to play a role in suppressing heat dissipation.

  In addition, it is considered that a soundproof layer is provided on the lower surface of such a floor heating mat to further enhance the soundproofing effect (see Patent Document 1).

JP-A-8-178317

  However, the heat insulating retaining layer in the floor heating mat described above does not exhibit sufficient soundproofing properties, and even if a soundproofing layer is further provided, the sound absorbing performance of the soundproofing layer has its own characteristics, and in a wide sound range. There was a situation that it was difficult to expect sufficient sound absorption performance. Therefore, in order to sufficiently absorb a wide range of sound by a single soundproof layer, the soundproof layer has to be thick, which causes a problem in commercialization as a floor heating mat.

  Then, in view of the said actual condition, this invention is providing the mat for floor heating which can exhibit sound-absorbing performance in a wide sound range, maintaining predetermined thickness.

The characteristic configuration of the present invention is a floor heating mat provided on a floor surface, provided with a heat dissipating body, provided with a heat insulating holding layer that holds the heat dissipating body and prevents heat dissipation downward,
Below the heat insulation holding layer, a first soundproof layer that absorbs sound acting from above the floor surface, and a second soundproof layer that absorbs sound in a range different from the sound absorbed by the first soundproof layer. It is in the point provided.

  That is, since the first soundproof layer is provided below the heat insulating holding layer, it is possible to absorb sound acting from above the floor surface, and further, the second soundproof layer is provided below the first soundproof layer. Sounds in a range different from the range absorbed by the layer can be absorbed. As described above, since the first and second soundproof layers that absorb the sounds in different sound ranges are provided separately, good soundproofing properties can be ensured, and the heat insulation holding layer mainly has heat insulation properties. It is sufficient if it is provided, and it can be made relatively hard with an emphasis on the holding ability of holding the radiator.

  In addition, for example, if the first soundproof layer is made of a material suitable for giving priority to soundproofing in the high frequency range, conversely, the second soundproof layer is a high sound absorption layer that is absorbed by the first soundproof layer. The material can be selected so that the sound absorption characteristics are different from each other, such as selecting a suitable material with priority given to the soundproofing property of the low frequency range inside and outside the sound range.

  That is, for example, a material that is relatively hard and particularly excellent in heat insulation is selected as the heat insulation holding layer, a material that is particularly excellent in high sound absorption characteristics is selected as the first soundproof layer, and a second soundproof layer is selected as the second soundproof layer. Assuming that a material having relatively low sound absorption characteristics as compared with one soundproof layer is selected and used, the first soundproof layer efficiently increases the heat insulation and heat radiator retention by the heat insulation retention layer. Since the sound in the range is absorbed and the sound in the low range is efficiently absorbed by the second soundproof layer, it is possible to ensure a good soundproofing property within a small thickness range for the entire wide range.

  The first soundproof layer and the second soundproof layer may be provided below the heat insulation holding layer. Further, the first soundproof layer and the second soundproof layer need only have different sound ranges to be absorbed, and therefore may have different materials. In the case where the sound range to be absorbed cannot be clearly specified, it is considered that if the center wavelength or waveform of the sound range to be absorbed is different, the sound in a different sound range is absorbed. Also, different sound ranges may have overlapping portions.

Moreover, in the said structure, it is preferable to form the said 1st soundproof layer softer than the said heat insulation holding | maintenance layer, and to form the 2nd soundproof layer softer than the said 1st soundproof layer.
That is, when the first soundproof layer and the second soundproof layer are formed of different materials, excellent sound absorption characteristics can be exhibited in different sound ranges. In addition, by combining different materials as a whole, the sound absorption characteristics of the respective soundproof layers can be made to exhibit further different sound absorption characteristics, and is particularly effective in reducing the frequency dependence of the sound absorption performance.

  Moreover, in the above-described configuration, it is particularly preferable that the first soundproof layer is formed from a nonwoven fabric and the second soundproof layer is formed from a soft foamed resin body. If it forms in this way, it will be easy to share a function with the heat-radiating body holding | maintenance capability of a heat insulation holding | maintenance layer, the high sound region soundproofing property of said 1st soundproofing layer, and the low sound-medium / high sound region soundproofing property of a 2nd soundproofing layer. By such function sharing, it is possible to exhibit soundproofing performance in a wide sound range as the entire floor heating mat.

Moreover, this invention is especially suitable when using the hot water piping for distribute | circulating warm water inside as said heat radiator.
In order to hold the hot water pipe, the hot water pipe is relatively hard and has low flexibility, and therefore there is a situation in which a relatively hard heat insulating holding layer must be employed. Then, it becomes a floor heating mat with a low soundproofing effect as in the conventional technique. On the other hand, if the above-mentioned configuration is adopted, even if a relatively hard hot water pipe is used, it is possible to exhibit high soundproofing, for example, compared to the case where a heating wire is used as a radiator, Significant improvement in soundproofing performance can be expected.

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIGS. 1 to 3, the floor heating mat of the present invention is provided with, for example, a heat radiator composed of a hot water pipe 1, a heat insulating holding layer 2 that holds the hot water pipe 1 below, and the heat insulating holding. A first soundproof layer 3 that absorbs sound acting from above the floor surface F is provided below the layer 2, and vibrations acting from above the floor surface F are absorbed below the first soundproof layer 3. A second soundproof layer 4 is provided. Further, a floor finishing material 5 is laid over the entire surface of the heat insulation holding layer 2 above the hot water pipe 1 to provide floor heating equipment. These floor finishing material 5, radiator, heat insulation holding layer 2, first soundproof layer 3, and second soundproof layer 4 are configured to be laid on the floor surface F in an integrated state as a whole. It is used in a state where a heat source device B for supplying hot water to the pipe 1 is connected. As the heat source unit B, a unit that obtains heat by burning gas, oil, or the like, a unit that obtains electric heat, a heat pump, or the like is employed.

<Heat insulation holding layer>
The heat insulation holding layer 2 is composed of, for example, a plate-like body having a thickness of about 7 mm to 10 mm formed from a rigid polyurethane foam. The plate-like body is a self-foaming porous body having a basis weight of 500 to 2000 g / m ² and is made hard to improve the heat insulating property by a large number of bubbles while increasing the compressive strength. A groove portion 21 into which the hot water pipe 1 is fitted is provided on the surface of the plate-like body.

The groove portion 21 to be engraved on the surface of the plate-like body is engraved along the length direction of the plate-like body, U-turned at the end in the length direction, and the hot water pipe 1 can be continuously embedded. A structure is preferred (see FIG. 3).
Further, the plate-like body is provided with a large number of cut-out portions 22 having a lattice shape in plan view in the thickness direction of the plate-like body so as to insulate heat dispersed in the plane direction from the hot water pipe 1 and efficiently transmit upward. It is constituted so that it can be made. In addition, the said notch part 22 may be provided not only in a grid | lattice form but in the stripe form arranged in parallel by one direction.

  The opening width of the groove 21 is preferably the same as the outer diameter of the hot water pipe 1 or slightly larger than this. The depth of the groove 21 is preferably the same as the outer diameter of the hot water pipe 1 or slightly shallower. If the depth of the groove portion 21 is larger than the outer diameter of the hot water pipe 1, when the hot water pipe 1 is embedded in the groove portion 21, a gap is formed on the upper side of the hot water pipe 1, and the heat of the hot water is effectively applied to the floor finish 5. Heat transfer cannot be performed, and the heat transfer efficiency of the floor heating mat is lowered, which is not preferable. Further, when the depth of the groove portion 21 is shallower than the height of the hot water pipe 1 and the floor finishing material 5 is closely arranged above the heat insulating holding layer, the heat sink is made to be in the groove portion by the floor finishing material 5. If it forms so that it may be hold | maintained in the compressed state in 21, the adhesiveness of the said floor finishing material 5 and the said hot water piping 1 will be improved. Further, in the case where the hot water pipe 1 is a resin pipe that is compressed and bent and deformed, the contact area between the hot water pipe 1 and the floor finish 5 increases, so the hot water pipe 1 Thus, the thermal conductivity from the floor finishing material 5 to the floor finishing material 5 is improved (see FIG. 5).

  As shown in FIGS. 2 and 4, a concave portion 23 that forms a space between the hot water pipe 1 and the heat insulation holding layer 2 below the hot water pipe 1 is formed inside the groove section 21. It is provided along the longitudinal direction of 21. Thereby, the heat from the hot water pipe 1 is insulated by the air layer 23a in the recess 23 and is not easily transmitted downward. In addition, the said recessed part 23 may be provided over the full length of the said groove part 21 (refer FIG. 4), is the shape along the longitudinal direction of the said groove part 21, and is formed in the long recessed part 23 shorter than the length of the said groove part 21. It may be present (see FIG. 6). In the former case, since the continuous air layer 23a can be formed in the recess 23, there is an advantage that a high heat insulating property can be exhibited. In the latter case, the long recess 23 in the groove portion 21 has an advantage. There is an advantage that a portion that is not formed is closely fitted and held in the hot water pipe 1 to be used for stable holding of the hot water pipe 1.

  In addition, when the said heat insulation holding | maintenance layer 2 is shape | molded, the other parts except the said floor finishing material 5, the hot water piping 1, and the 2nd soundproof layer 4 are shape | molded integrally as a whole. More specifically, except for the heat insulation holding layer 2, a part of the preform to be integrally formed with the heat insulation holding layer 2 is held in a mold, and the heat insulation holding layer 2 is foam-molded in the mold. For example, it is molded in a state where the whole is integrally bonded.

Hard materials for forming the heat insulation holding layer 2 include polyurethane foam, polyethylene foam, polypropylene foam, polystyrene foam, polyvinyl chloride foam, polymethyl methacrylate foam, polycarbonate foam, polyphenylene oxide foam. Body, a foam of a mixture of polystyrene and polyethylene is used. Among these, polyurethane foam, polystyrene foam and the like are preferable. If these are selected within a range where the expansion ratio is 30 times or less and the thickness is within a range of 5 to 50 mm, those having high shape retention, high soundproofing and cushioning properties are preferable.
Moreover, in order to form the heat insulation holding layer 2, a nonwoven fabric can also be used. When using a nonwoven fabric, a nonwoven fabric manufactured by a needle punch method, a thermal bond method, a chemical bond method, or the like, a contracted felt, or the like is used. These nonwoven fabrics are suitable for forming a sufficient thickness. It is preferable that the heat insulation holding layer 2 is sufficiently harder than the first soundproof layer 3 described in detail later, has excellent shape retention, and has high heat insulation.

<Heat radiator>
In addition to the hot water pipe 1, a steam pipe, a heating oil pipe, an electric heater, a heat pipe, or the like can be used as the heat radiating body, as long as it can conduct heat to the floor finish 5.

  The hot water pipe 1 is formed of, for example, a PE resin pipe having an outer diameter of 7.2 mm, and is fitted and held in a groove portion 21 provided in the heat insulating holding layer 2. At this time, a heat transfer sheet 11 made of aluminum foil or the like is interposed between the heat insulation holding layer 2 and the hot water pipe 1. The end portion 11 a of the heat transfer sheet 11 extends to the outside of the groove portion 21.

  In addition, these are preferably made of a material or a shape that is elastically deformed under a load. For example, as the hot water pipe 1, a crosslinked polyethylene pipe, a polybutene pipe, a copper pipe, or the like is used.

  As the heat transfer sheet 11, a metal vapor deposited sheet, tin foil, stainless steel foil, copper foil, or the like can be used in addition to aluminum foil, as long as the heat from the hot water pipe 1 can be conducted well. Good. Among these, aluminum foil is preferable from the viewpoints of manufacturing difficulty and cost. If the thickness of the metal foil is too thin, the strength is not sufficient. If the thickness is too thick, the product becomes heavy and the cost is increased. Therefore, the thickness is preferably selected in the range of 10 to 100 μm.

<First soundproof layer>
The first soundproof layer 3 is formed of a non-woven fabric manufactured by a needle punch method or the like in a mat shape having a thickness of about 2 to 10 mm. When the first soundproof layer 3 is about 200 to 1500 g / m ² , high soundproofing properties can be expected. The first soundproof layer 3 is laminated on the heat insulation holding layer 2 via a resin film 31. The resin film 31 plays a role of adhering while preventing the first soundproof layer 3 from being cured by entering the first soundproof layer 3 when the heat insulation holding layer 2 is molded.

  As fibers used for the nonwoven fabric, synthetic fibers such as polyester, polypropylene, acrylic, nylon and aromatic polyamide, natural fibers such as wool and cotton, chemical fibers such as rayon and acetate, or these fibers are mixed with each other. Examples are fibers. Among these, polyester fibers that can be easily adjusted for fineness are generally preferably used. Further, recovered recycled cotton may be used as these constituent fibers.

<Second soundproof layer>
The second soundproof layer 4 is formed, for example, in the form of a sheet made of soft polyurethane and having a thickness of about 1 to 5 mm. The soft polyurethane is, for example, an open-cell foam having a density of 10 to 50 kg / m ³ and exhibiting a high cushioning property. The resin film 41 is bonded and integrated to the first soundproof layer 3.

In addition, a nonwoven fabric can also be used as the second soundproof layer 4. Since the second soundproof layer 4 is preferably sufficiently softer than the first soundproof layer 3 and has a different sound absorption range, in this case, the basis weight is preferably about 100 to 400 g / m ² .

  Further, a nonwoven fabric sheet 6 having a resin layer 61 formed on one surface is provided on the lower surface of the second soundproof layer 4, and the resin layer 61 side of the nonwoven fabric sheet is bonded to the second soundproof layer 4. Keep it.

<Floor finishing material>
On the upper side of the heat insulation holding layer 2, a floor finishing material 5 is bonded and fixed. At this time, a heat transfer layer 51 and a protective layer 52 are interposed between the floor finishing material 5 and the heat insulation holding layer 2.

  The heat transfer layer 51 is formed by laying a heat transfer film made of aluminum foil or the like on the upper surface of the heat insulation holding layer 2 and is disposed so as to be in close contact with the heat transfer sheet 11 and the hot water pipe 1. ing. Thereby, when the heat from the hot water pipe 1 is conducted to the heat transfer layer 51, the floor heating mat is efficiently spread in the plane direction, and heat can be uniformly conducted to the floor finishing material 5 on the upper surface. It becomes like this.

  The protective layer 52 is formed from a synthetic resin film such as PET, and is formed integrally with the heat transfer layer 51. The heat transfer layer 51 and the protective layer 52 are bonded and fixed so as to cover the upper surface side of the heat insulation holding layer 2. Thereby, it can prevent that the said heat-transfer layer 51 is damaged by an impact etc., or it is torn at the time of construction of the said floor finishing material 5, a repainting, etc. The end of the heat transfer sheet 11 is bonded to the heat transfer layer 51 so that the heat captured by the heat transfer sheet 11 is efficiently transmitted to the heat transfer layer 51. .

  The floor finish 5 protects the surface of the heat insulating holding layer 2 made of foamed synthetic resin and the radiator 1, and makes the appearance of the floor heating mat beautiful. The floor finishing material 5 is preferably made of wooden plywood and has a wood grain decorative veneer attached to the surface thereof. If the thickness of the floor finish 5 is too thin, the strength will be insufficient and it will be easily damaged. The thickness is in the range of 5-10 mm.

<Construction form, etc.>
When the floor heating mat of the present invention is applied to the floor surface F, an adhesive is applied to the floor surface F, and the adhesive is applied to the nonwoven fabric portion 62 of the nonwoven fabric sheet 6. Then, since the adhesive used at the time of construction does not easily enter the second soundproof layer 4 beyond the resin layer 61, the second soundproof layer 4 is deteriorated by a solvent or the like contained in the adhesive. Inconvenience is suppressed.

  The floor heating mat is prepared in advance in a factory, etc., folded or wound and transported to the construction site, the folding is released or unwound and placed, and the floor finishing material 5 is arranged on the upper side and bonded. The floor heating mat can be heated by being fixed to the heat insulating holding layer 2 by nailing or nailing. In the case of a concrete building, the floor heating mat can be constructed in various places such as on the slab floor F, on the base plywood laid on the slab floor F, or on the base plywood of a wooden house. The floor heating mat is connected to the hot water pipe 1 after being constructed on the floor surface F, and is used as a floor heating appliance by circulating hot water.

<Sound absorption characteristics>
FIG. 7 shows a comparison of the sound absorption characteristics when the floor finishing material is applied using the floor heating mat described above (the product of the present invention) and the sound absorption characteristics when only the finishing material (comparative product) is used. became. From the figure, in the product of the present invention, the frequency dependence of the transmitted sound pressure is reduced (the graph becomes flat), and an improvement in the sound absorption characteristic of 200 Hz to 1500 Hz is seen, and in particular, the sound absorption characteristic of 5 db or more is improved at 500 Hz. I understand that.

  In addition, in this invention, a sheet-like thing can be used for the said heat radiator other than a tubular thing.

  It was possible to provide a floor heating mat capable of exhibiting sound absorbing performance in a wide sound range while maintaining a predetermined thickness.

Longitudinal side view of floor heating mat Disassembled perspective view of floor heating mat Plan view of usage pattern of floor heating mat Plan view of main parts of mat for floor heating Compression action diagram of hot water piping of floor heating mat The figure which shows the form of a different recessed part Graph showing sound absorption characteristics of floor heating mat

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heat dissipating body 2 Heat insulation holding layer F Floor 3 First soundproof layer 4 Second soundproof layer

Claims (4)

A floor heating mat provided on a floor surface, provided with a heat dissipating body, provided with a heat insulating holding layer that holds the heat dissipating body and prevents heat dissipation downward,
Below the heat insulation holding layer, a first soundproof layer that absorbs sound acting from above the floor surface, and a second soundproof layer that absorbs sound in a range different from the sound absorbed by the first soundproof layer. Floor heating mat provided.   The floor heating mat according to claim 1, wherein the first soundproof layer is formed softer than the heat insulation holding layer, and the second soundproof layer is formed softer than the first soundproof layer.   The floor heating mat according to claim 1 or 2, wherein the first soundproof layer is formed of a nonwoven fabric, and the second soundproof layer is formed of a soft foamed resin body.   The floor heating mat according to any one of claims 1 to 3, wherein the radiator is a hot water pipe for circulating hot water therein.

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