JPH08260684A - Wooden floor material for heating floor and heating floor structure using the same - Google Patents

Abstract

PURPOSE: To rapidly raise temperatures of the surface of a floor to a desired temperature. CONSTITUTION: In a wooden floor material for a heating floor in which there are provided a surface decoration plywood 13, a wooden core material 11, and a base plywood 15, and aluminum foils 12, 14 being uniformly-heating materials are provided so as to alternate with the plywood 13, material 11, and plywood 15, through holes 16 are vertically formed through the material 11 to effect a convection current of heating air. Thus heat conduction in the vertical direction is enhanced by the convection current of air in the core material so that the time required to raise temperatures of the surface of the floor material can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wooden flooring material for a heating floor and a heating flooring structure using the flooring material. TECHNICAL FIELD The present invention relates to a wooden floor material for a heating floor that enables a floor surface to reach a desired temperature quickly and a heating floor structure using the floor material.

[0002]

2. Description of the Related Art A floor structure in which a heat source is mounted on a floor slab or a floor base material such as a joist, and a wooden floor material is arranged thereon is known as a heating floor. As a heat source,
Mainly, an electric heater and hot water are used, and in the latter case, piping for circulating hot water is installed on the floor slab or between the joists. The flooring placed on the heat source has the same structure as the wooden flooring used for ordinary flooring, or it is repeatedly subjected to expansion and contraction due to moisture and expansion and contraction due to heat. Those that have taken measures are used.

FIG. 8 is an example of a heating floor, in which a heat insulating material 3 made of expanded polystyrene or the like is arranged between joists 2 and 2 which are orthogonally assembled to a large pull 1, and a flat surface as a heat source is arranged on the heat insulating material 3. The electric heater 4 having a typical heating surface is attached.
Then, a wooden floor material 5 as a flooring is spread over the electric heater 4. The floor material 5 basically includes a core material 5a as a strength material, a surface decorative board 5b made of a decorative plywood or the like on the front surface side, and a wood base board 5c which is a plywood or the like on the back surface side. Makeup is applied to the surface of the surface decorative plate 5b by pattern printing, wood grain pattern sheet attachment, makeup single plate attachment, or the like. The core material 5a is mainly made of plywood, and in some cases, is made of perforated plywood for the purpose of sound insulation and vibration isolation. Further, an elastic material may be interposed as the intermediate layer. As the floor material 5, a large number of rectangular unit plates, which are actually machined around the periphery, are actually combined and integrated in a predetermined shape are often used. However, a decorative material for the surface decorative plate 5b, for example, a veneer plate is used. Only the core material 5 is formed with such an integrated pattern.
In some cases, a having a larger size may be used.

In order to use such a floor material as a floor material for a heating floor, as an example of taking measures against expansion / contraction and heat shrinkage due to moisture as described above, a non-woven fabric or the like is sandwiched as an intermediate layer of a surface decorative board. The horizontal displacement of the wood material is constrained, or non-woven fabric, Japanese paper, cross-band veneer, etc. are interposed between the base material of the surface decorative board and the decorative material, whereby the core material and surface decorative plywood The ones that prevent cracks from occurring, the ones that the actual engaging parts of the floor materials are joined with an adhesive to restrain the deformation due to heat shrinkage, or the gaps between the floor materials due to expansion or contraction. It is known that even if the change occurs, a measure is taken to make the change inconspicuous.

By taking such measures, the structural or visual inconvenience that occurs in the floor material of the heating floor can be avoided, and the heating floor is now effectively used as one of the indoor heating systems in cold regions. ing.

[0006]

The floor heating is to obtain a feeling of heating while warming the floor like a letter, and when heating is required, the heat generated by the heating source located on the back side is quickly generated. It is desired to be transmitted to the surface side and to raise the temperature of the floor surface to a desired temperature in a short time. However, as described above, the flooring material currently used for the heating floor is only the flooring material used for the ordinary flooring, or only the means for suppressing the deformation is taken, and the improvement of the thermal conductivity is No special consideration is given. According to the experiments conducted by the present inventors, in the heating floor that is currently being constructed, it takes an average of 20 times during the so-called temperature rising time from when the power switch is turned on or the circulation of hot water starts until the surface temperature of the heating floor reaches a predetermined temperature.
It is about a minute, and it is said that the shortening of the heating time is an issue to be improved.

Therefore, an object of the present invention is to provide a wood floor material for a heating floor and a heating floor structure using the floor material in which the heating time in floor heating is shortened.

[0008]

One of the basic aspects of the wood flooring material for heating floors according to the present invention for achieving the above object is to provide a surface decorative board, a wood core material, a wood base board, and A wood floor material for heating floors, which has at least a metal material having a soaking effect interposed between a surface decorative plate and a core material, wherein the wood core material has a large number of vertical voids. It is characterized by having.

Another basic aspect of the wood floor material for heating floors according to the present invention is that it is interposed between the surface decorative board, the wood core material, the wood base board, and the surface decorative board and the core material. A wood flooring material for a heating floor, which has at least a metal material having a soaking effect, and is arranged such that at least a part of the woody material constituting the wood-based core material has a vertical fiber direction. It is characterized by

The present invention further includes at least a heat source body arranged on the floor substrate and a floor material for the heating floor arranged on the heat source body and having the above-mentioned structure. Will also be disclosed.

[0011]

According to one aspect of the wood floor material for a heating floor according to the present invention, heat convection is generated in a large number of vertical voids formed in the core material, which causes vertical movement of the core material. The thermal conductivity is better than that of the conventional one. Further, according to the wood floor material for heating floors according to another aspect, since the fiber directions of all or part of the wood material constituting the core material are vertical, the thermal conductivity in the vertical direction of the core material is high. Is better than the conventional one. And, since the metal material that has a soaking effect is interposed between the surface decorative plate and the core material,
The transferred heat is rapidly dispersed in the plane direction by the metal material. As a result, in the heating floor using the wooden flooring material for heating floors according to the present invention, the time until the heat from the heat source is transferred to the surface side of the flooring material is significantly increased after the power is turned on or the hot water supply is started. And the so-called temperature rising time is shortened.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A wood floor material for a heating floor and a heating floor structure using the floor material according to the present invention will be described below in detail with reference to the accompanying drawings. It should be noted that the wood floor material for heating floors according to the present invention should be placed on a floor slab or a heat source such as a hot water pipe installed between joists in the same manner as in conventional floor heating construction. You can Therefore, in the following description, only the wooden floor material for the heating floor will be described in detail.

FIG. 1 shows an embodiment of a wood flooring material for a heating floor according to the present invention. This flooring material 10 has a core material 11 having a predetermined thickness, and has a soaking effect on its upper surface side. A surface decorative plywood 13 is attached via an aluminum foil 12 which is a material, and a wood base plywood 15 is attached to the lower surface side thereof via an aluminum foil 14 which also performs a similar function. The surface-decorated plywood 13 is an example of the surface-decorated board, and may be the same as the surface-decorated board in the flooring for flooring known in the related art, and appropriate makeup may be applied as necessary. The wood base mix material 15 is also an example of a wood base plate, and may be the same as the wood base plate of a conventionally known floor material.

The material having a soaking effect is not limited to aluminum foil, but may be a thin iron plate, an aluminum plate, or a metal foil such as an alloy foil of aluminum and another metal. Also, the core material 1
1 may be any wood material used as a core material in a normal floor material such as 3 to 5 ply plywood, inexpensive solid wood such as solid softwood, but in this embodiment, the core material 1
Reference numeral 1 denotes a three-ply plywood plate, in which a large number of through holes 16 are formed as vertical gaps, as shown in FIGS.

In the wood flooring material for a heating floor having the above-mentioned construction and the construction shown in FIG. 1 and FIG. 2, air existing in a large number of voids (through holes 16) formed in the vertical direction is generated. , The temperature is raised by heating from the back surface side and rises, and the aluminum foil 12, which is a soaking plate, absorbs heat and the temperature is lowered and falls.
Since so-called heat convection is generated, the heat conduction characteristics in the vertical direction are improved as compared with the conventional wood floor material for heating floors.
As a result, when this floor material is placed on a floor surface having a conventionally known heat source as shown in FIG. 8, heat from the heat source is uniformly transferred to the surface side of the floor material in a short time. Therefore, in the heating floor structure having the floor material for the heating floor, the heating time can be shortened, and the desired surface temperature can be obtained in a short time when necessary.

It should be noted that a large number of through holes 16 ...
Is merely an example of “a large number of voids in the vertical direction”,
Through slits provided from one end to the other,
Or those with slits left behind,
The shape, number and arrangement of voids in the vertical direction are arbitrary. Considering the mechanical strength and the direction of thermal conductivity required for flooring,
The optimal one is set experimentally.

FIG. 3 is a cross-sectional view showing a core material having another shape of "a large number of voids in the vertical direction". In this core material 11a, a bottomed hole 16a is formed instead of a through hole. FIG. 4 shows still another example. In this core material 11b, a plurality of bottomed grooves 16b are formed in the width direction, the longitudinal direction, or the bidirectional direction, not the through holes or the bottomed holes. In these cases, in addition to the improvement of the vertical thermal conductivity due to the convection of air in the bottomed holes 16a or the bottomed grooves 16b, the rigidity and bending strength of the core material are higher than those of the through holes or the through grooves. There is an advantage such as holding. FIG. 5 shows still another example. In this core material 11c, a plurality of through hole groups 16c ... Are formed with a predetermined interval p. In this case, in addition to improving the thermal conductivity in the vertical direction, the bending strength of the core material itself is improved, and the workability in the manufacturing process is improved.

FIG. 6 is a perspective view showing another embodiment of the wood floor material for a heating floor according to the present invention. The core material 21 has a thickness of about 2 mm to 5 mm parallel to the fiber direction as shown in FIG. A plate-shaped body obtained by cutting a laminated body 21a in which a necessary number of sliced single plates or wooden boards 22 ... Are laminated with an adhesive 23 with a width of a thickness h of the core material 21 has a vertical cutting surface. It is formed by arranging in this way. In this core material 21, the fiber direction is the vertical direction.
According to the experiments conducted by the present inventors, the thermal conductivity of wood showed a higher value in the direction parallel to the fiber direction than in the direction orthogonal to the fiber direction, and the difference was 2-3 times. .
Therefore, also in the core material of this embodiment, the core material itself exhibits good thermal conductivity in the vertical direction, and the heat conducted upward is quickly absorbed by the aluminum foil 12 which is a heat equalizing plate, and the heat is transmitted in the plane direction. Is soaked. Thereby, the temperature rising time of the floor material surface is shortened as compared with the conventional wooden floor material for the heating floor.

As another embodiment of the wood flooring material for the heating floor of the mode shown in FIG. 6, a single plywood or a wood ply 22 is replaced with a parallel plywood (LVL) having the same fiber direction or a cross band veneer. It will be appreciated that parallel plywood could also be used. In addition, the "many voids in the vertical direction" described in the embodiments of FIGS. 1 to 5 may be provided in the core material having the fiber direction in the vertical direction as described above, whereby the thermal conductivity is further improved. It will also be appreciated that it will improve.

In each of the above-mentioned embodiments, the soaking material, which is an aluminum foil, is provided for the purpose of improving the heat transfer in the surface direction, but it is interposed between the core material and the base plywood. The soaking material 14 to be used is not always essential, and may be omitted depending on the usage environment of the heating floor. The above-mentioned wooden floor material for a heating floor according to the present invention is actually manufactured, and an electric heater with a power consumption of 120 W (heater temperatures of 46 to 48) is used.
℃), the surface temperature of the sample is 32
Measures the time (T, minutes) until reaching ℃, and the temperature (C, ℃) when the surface temperature becomes constant using a thermocouple, and also specifies the "thermal conductivity of heat insulating material" specified in JIS1412. The thermal conductivity (K,
Kcal / mh ° C) was measured. The room temperature at the time of measurement is 21 ° C.
Met.

The samples used were as follows, and the measurements were all 200 mm × 200 mm.
As an actual example of what is shown in FIGS. 1 and 2, the through holes 16 having a diameter of 5 mm are formed into blocks of 3 rows and 4 columns in a 3 ply lauan plywood having a thickness of 4 mm, and the blocks are formed in a substantially even distribution. 5 as a material with soaking effect on both sides
0 μm aluminum foil is attached, and further 3 mm on the back side.
A plywood and a 5 mm decorative plywood on the front side
Was manufactured.

As a practical example having the core material shown in FIG. 4, 15 mm bottomed grooves 16b having a width of 5 mm are formed on the same 3-ply lauan plywood.
With the exception of using a core material formed with a substantially uniform pitch of mm,
A floor material B was manufactured in the same manner as the floor material A. As a practical example of the one shown in FIG. 6, a laminated body 21a obtained by adhering a wooden board 22 having a thickness of 20 mm with an adhesive 23 is sliced into a width of 8 mm, and an aluminum foil 12 having a thickness of 50 μm is formed on the upper and lower surfaces of a core material 21.
Floor material C was constructed by bonding 14 to the lower surface, and a base plywood 15 having a thickness of 2.5 mm to the lower surface and a decorative plywood 13 having a thickness of 2.5 mm to the upper surface.

As a comparative example, a flooring material D having the same structure except that the same three-ply lauan plywood used for the flooring materials A and B was used as a core material in a solid state, and the flooring material D was subjected to the same measurement under the same conditions. I went. Table 1 shows the results.

[0024]

[Table 1]

[Discussion] As is clear from the test results of Table 1, in each of the samples A to C which are wood flooring materials for heating floors according to the present invention, in any case, the heat level higher than that of the conventional flooring material D was used. The conductivity shows that the temperature rise time T until the surface temperature reaches a predetermined temperature (32 ° C.) is reduced by 4 to 9 minutes. Further, under the same heater condition, the temperature C when the surface temperature becomes constant is 0.7 ° C. to 0.9 ° C. higher than that of the conventional one because of the improvement in heat retention. It can be seen that the thermal efficiency has also improved.

[0026]

EFFECTS OF THE INVENTION By using the wood flooring material for a heating floor according to the present invention, it becomes possible to obtain a heating floor structure which reaches a predetermined surface temperature in a short time after the start of heating, thereby improving the usability of floor heating. Let Also, since the thermal efficiency is improved,
It also reduces the maintenance cost of floor heating.

[Brief description of drawings]

FIG. 1 is a diagram illustrating an example of a wood floor material for a heating floor according to the present invention.

FIG. 2 is a cross-sectional view illustrating the configuration of a core material that constitutes the floor material shown in FIG.

FIG. 3 is a cross-sectional view illustrating another configuration of the core material that constitutes the floor material illustrated in FIG.

FIG. 4 is a cross-sectional view illustrating still another configuration of the core material that constitutes the floor material shown in FIG.

FIG. 5 is a cross-sectional view illustrating still another configuration of the core material that constitutes the floor material shown in FIG.

FIG. 6 is a view for explaining another embodiment of the wood floor material for the heating floor according to the present invention.

FIG. 7 is a diagram illustrating a method of manufacturing a core material that constitutes the floor material shown in FIG.

FIG. 8 is a cross-sectional view illustrating a conventional wooden floor material for a heating floor and a heating floor structure.

[Explanation of symbols]

11 ... Core material, 12, 14 ... Aluminum foil (uniform temperature material), 13
… Surface decorative plywood, 15… Underlying plywood, 16… Through hole (void in vertical direction)

Claims (4)

[Claims] 1. A wood system for a heating floor comprising at least a surface decorative board, a wood-based core material, a wood base board, and a metal material interposed between the surface decorative board and the core material and having a soaking effect. A floor material for a heating floor, wherein the wood-based core material has a large number of voids in the vertical direction. 2. A wood floor system for a heating floor, which has at least a surface decorative board, a wood-based core material, a wood base board, and a metal material interposed between the surface decorative board and the core material and having a soaking effect. A floor material for a heating floor, characterized in that at least a part of the wood material constituting the wood-based core material is arranged such that the fiber directions thereof are the vertical direction. 3. The wood floor for a heating floor according to claim 1, wherein a metal material having a soaking effect is also interposed between the wood core material and the wood base plate. Material. 4. A heating floor structure comprising at least a heat source body arranged on a floor substrate, and the floor material for a heating floor according to any one of claims 1 to 3 arranged on the heat source body. .