JP4929900B2 - Floor heating panel - Google Patents

Description

The present invention relates to a floor heating panel that performs floor heating through a heat medium warm water in the pipe.

  Conventionally, a floor heating structure for heating from the floor surface has been developed and put into practical use on the floors of buildings such as ordinary houses, apartment houses, hotels, hospitals, elderly care facilities, etc. A floor heating structure has been proposed. In particular, the floor heating structure provided with a heat radiating pipe for passing a heat medium such as hot water has the advantage that it is less likely to overheat locally and has good heat dissipation, unlike the heater heating method. It has come to be.

  As a floor structure provided with this floor heating panel, Japanese Patent Laid-Open No. 2000-291965 discloses a floor heating panel in which a groove for accommodating a pipe is provided on the upper surface, and a pipe for circulating a heat medium is disposed in the groove. And the structure with the plate-shaped heat storage part laminated | stacked on this floor heating panel, the discarding board of the upper side of this heat storage part, and the floor finishing material of the upper side of this discarding board is described.

  As a heat storage part of this Unexamined-Japanese-Patent No. 2000-291965, the heat storage material, such as a rock and concrete, was made into plate shape as it is, or such a heat storage material was made into a lump shape, and was disperse | distributed and contained in the synthetic resin board. Is used (paragraph 0016 of the same publication).

Japanese Patent Application Laid-Open No. 9-303803 describes a floor heating panel having a flat plate heat storage body and a hot water pipe embedded in the heat storage body. In paragraph 0011 of the publication, it is described that a fluidizing material such as a gel fluid or an aqueous solution having a heat storage performance is preferable as the heat storage body.
JP 2000-291965 A JP-A-9-303803

  The heat storage body of JP 2000-291965 A has low heat storage performance due to concrete, rocks, and the like.

  In JP-A-9-303803, the fluidizing material is uniformly distributed over the entire panel (FIG. 2 of the same publication). Therefore, the upper surface temperature of the panel is substantially the same for the entire panel.

The present invention aims at providing a floor heating panel that uses a high latent heat storage material heat storage performance as a heat storage material, and the temperature of the panel upper surface can be different in part.

The floor heating panel of the present invention is a floor heating panel comprising a substrate having a heat radiating tube and a floor heating heat storage sheet provided on the upper side of the substrate, wherein the floor heating heat storage sheet is empty inside. a hollow plate-shaped shell having a chamber, Ri Na and a latent heat storage material the filled in an empty compartment of the shell, the air chamber within the shell are fractionated into a plurality of small chambers, other of the chamber has closed the chamber different latent heat storage materials having melting temperatures is filled, the melting temperature of the lower heat dissipation tube latent heat storage material filled in the small chamber is disposed, the heat radiation on the lower side It is characterized by being higher than the melting temperature of the latent heat storage material filled in the small chamber in which no pipe is arranged .

  The shell includes an upper surface portion, a lower surface portion facing the upper surface portion at a predetermined interval, a peripheral wall portion connected to the upper surface portion and a peripheral edge portion of the lower surface portion, and a space between the upper surface portion and the lower surface portion. And a plurality of partitions are provided so as to extend in parallel in one direction, and the plurality of chambers are configured to extend in parallel in the one direction. It is preferable.

  In this floor heating panel, it is preferable that the heat radiating pipe extends in parallel with the extending direction of the small chambers, and the heat radiating pipes are disposed only under the partial chambers.

In this floor heating panel, a plurality of rows of heat radiating pipes are provided in parallel, and at least one small room without a heat radiating pipe is disposed between the small rooms having the heat radiating pipes disposed on the lower side. It is preferable .

Since the heat storage sheet for floor heating of the floor heating panel of the present invention uses a latent heat storage material as the heat storage material, the upper surface temperature of the heat storage sheet for floor heating is normal even if a high-temperature heat medium is circulated through the heat radiating pipe. In this case, the melting temperature of the latent heat storage material is maintained. Therefore, for example, by using a latent heat storage material having a melting temperature of about 40 to 50 ° C. and allowing hot water of about 80 ° C. to flow through the heat radiating pipe, the thermal efficiency of the hot water boiler can be improved. Further, even if the temperature of the heat medium flowing through the heat radiating pipe fluctuates, the fluctuation of the floor surface temperature is small.

  Moreover, the floor temperature distribution according to a resident's wish can be set by selecting the thing with different melting temperature as a latent heat storage material with which each small room is filled.

  In particular, by arranging small chambers such as heat radiating pipes in parallel and between the small chambers having the heat radiating pipes arranged on the lower side, a small room without the heat radiating pipes arranged on the lower side can be used. Panel top surface temperature can be different from others. Even in this case, the fluctuation of the floor surface temperature above each small chamber is small.

  In addition, when the inside of the shell is formed by partitioning a plurality of spaces between the upper surface portion and the lower surface portion, the surface pressure rigidity of the shell becomes high, and a pressing force is applied to the heat storage sheet for floor heating from above. Deformation is prevented or suppressed. Moreover, even if a crack or a hole occurs in one part of the shell due to some cause, the leakage of the latent heat storage material is limited to one small chamber.

  When a plurality of partition walls are provided extending in parallel in one direction, the shell can be easily manufactured by extrusion molding of a synthetic resin.

  Hereinafter, embodiments of the floor heating panel of the present invention will be described in detail with reference to the drawings. However, what is described below is an example of embodiments of the present invention, and the present invention does not exceed the gist thereof. However, the present invention is not limited to the following description.

  FIG. 1 (a) is a cross-sectional view of a floor heating panel according to an embodiment of the present invention, FIG. 1 (b) is an enlarged view of part B of FIG. 1 (a), and FIG. It is an enlarged view of the II section of b). FIG. 3 is an exploded perspective view showing the engagement relationship between the substrate and the heat storage sheet, and FIG. 4 is an exploded perspective view of the shell.

  The floor heating panel 1 includes a substrate 10 and a floor heating heat storage sheet 20 provided on the upper surface side of the substrate 10. The substrate 10 is made of a base plate 11 made of a rectangular plate-shaped synthetic resin foam or the like, and a plywood or the like disposed along a pair of sides of the base plate 11 and fixed to the base body 11 with an adhesive or the like. It consists of Kokonita 12 and 12.

  The thickness of the base 11 is slightly smaller than the small joist 12. The base 11 and the small joists 12 are fixed with their bottom surfaces being flush with each other, and the upper surface of the base 11 is slightly lower than the upper surface of the small joists 12. Accordingly, the substrate 10 has a shape in which a recess is formed on the upper surface side of the base 11. The depth of the recess is equal to the difference in thickness between the small joist 12 and the base 11.

  A groove 13 is extended on the upper surface of the base 11, and a heat medium circulation pipe (radiation pipe) 14 is disposed in the groove 13. In addition, although illustration is abbreviate | omitted, in this groove | channel 13, the reverse ohm character which has the U-shaped part of the substantially U-shaped cross-sectional shape, and the overhang | projection part which protrudes in the direction away from each other from the upper end of this U-shaped part A heat transfer material having a shape may be disposed, and the heat radiating tube 14 may be disposed in the U-shaped portion. The overhanging portion is superimposed on the upper surface of the base body 11 along the groove 13. The heat transfer material is made of aluminum or the like, and is attached to the base 11 with an adhesive or an adhesive as necessary.

  The small joist 12 is an elongated plate-shaped member made of plywood.

  The heat storage sheet 20 for floor heating has a size that fits into the recess, and has a rectangular shell 21 having a thickness equal to the depth of the recess, and is attached to the upper surface of the shell 21. And a foil body 30 made of a synthetic resin nonwoven fabric, woven fabric, film, or the like. A pair of side portions 30 a of the foil body 30 protrudes from the side edge of the shell 21.

  As clearly shown in FIG. 4, the shell 21 includes an upper surface portion 22, a lower surface portion 23 disposed at a predetermined distance from the upper surface portion 22, and a pair of side sides of the upper surface portion 22 and the lower surface portion 23. A pair of side wall parts 24 connecting the parts, a rib-like partition wall 25 extending parallel to the side wall part 24 and connecting the upper surface part 22 and the lower surface part 23, and the end face of the shell 21 are closed And a pair of end plates 26, 26. The partition wall 25 divides the inside of the shell 21 into a plurality of small chambers 29 extending in a direction parallel to the partition wall 25 and the side wall portion 24.

  The upper surface part 22, the lower surface part 23, the side wall part 24, and the partition wall 25 are integrally formed by extrusion molding of synthetic resin. In addition, the extrusion direction of extrusion molding is an extending direction of the side wall portion 24 and the partition wall 25. One end plate 26 is adhered to one end face of a semi-finished shell made up of the upper surface portion 22, the lower surface portion 23, the side wall portion 24, and the partition wall 25 by bonding, ultrasonic welding, etc. 27, and the other end plate 26 is adhered to the other end face and fixed by ultrasonic welding or the like, whereby the shell 21 in which the latent heat storage material 27 is sealed is obtained. As the latent heat storage material 27, a material having a melting temperature of about 30 to 60 ° C. is used.

  In this embodiment, the latent heat storage materials 27 in the adjacent small chambers 29 have different melting temperatures. Specifically, in this embodiment, as shown in FIG. 2, the small chamber 29 in which the heat radiating tube 14 is not disposed on the lower side is provided between the small chambers 29 (29a) in which the heat radiating tube 14 is disposed on the lower side. (29b, 29c) are provided. The small chamber 29b is adjacent to the small chamber 29a, and the small chamber 29c is located between the small chambers 29b. In the side part of the panel, the small chamber 29c is adjacent to only one small chamber 29b. The small chamber 29a on the heat radiating pipe 14 is filled with a latent heat storage material 27a having a relatively high melting temperature, the small chamber 29b adjacent thereto is filled with a latent heat storage material 27b having an intermediate melting temperature, and the small chamber 29c is filled. Is filled with a latent heat storage material 27c having a relatively low melting temperature. The preferable melting temperature and composition of the latent heat storage material 27 will be described later.

  By sticking the foil body 30 to the shell 21 with an adhesive or an adhesive, the heat storage sheet 20 for floor heating is obtained. The width of the side portion 30 a of the foil body 30 protruding from the shell 21 is equal to the width of the small joist 12.

  The heat storage sheet 20 for floor heating is mounted on the substrate 10 with the heat radiating tube 14. At this time, the shell 21 is overlaid on the upper surface of the base body 11, and the side portion 30a is overlaid on the upper surface of the small joist 12, and is adhered to the base 11 and the small joist 12 with an adhesive or an adhesive, respectively. Thereby, the floor heating panel 1 is comprised.

  The floor heating panel 1 configured as described above is laid on a floor base plate made of, for example, plywood, and a floor finishing material is distributed on the floor base plate as necessary. The floor heating panel 1 is fixed to the floor base plate by nailing or screwing through the side portions 30a and the small joists 12. In this embodiment, since the side part 30a extends from both sides of the shell 21, the left and right side edges of the floor heating heat storage sheet 20 can be firmly fixed.

  Since this nail or screw does not penetrate the shell 21 at all, the liquid latent heat storage material 27 does not leak at all.

  Floor heating is performed by circulating a heat medium such as hot water through the heat radiating pipe 14 of the floor heating panel 1. Since the heat storage sheet 20 is laid on the upper side of the heat radiating pipe 14 and the heat storage material of the heat storage sheet 20 is a latent heat storage material, the floor surface temperature is usually that of the latent heat storage material even if the temperature of the heat radiating pipe 14 is high. It becomes melting temperature or lower, and comfortable floor heating can be performed. Moreover, the thermal efficiency of a boiler can be improved by making high temperature, such as warm water passed along the thermal radiation pipe 14. FIG. Further, even if the temperature of hot water or the like flowing through the heat radiating pipe 14 fluctuates, the floor surface temperature can be kept substantially constant.

  Further, in this heat storage sheet 20 for floor heating, the latent heat storage material 27a in the small chamber 29a close to the heat radiating tube 14 has a high melting temperature, and the latent heat storage material 27c in the small chamber 29c separated from the heat radiating tube 14 The melting temperature is low, and the latent heat storage material 27b in the small chamber 29b between the two has a melting temperature intermediate between them. Therefore, the upper portion of the small chamber 29a is heated to a relatively high temperature, the upper portion of the small chamber 29c is heated to a lower temperature, and the upper portion of the small chamber 29b is heated to a temperature intermediate between the two. Accordingly, the floor heating temperature can be distributed.

  In this embodiment, the shell 21 of the heat storage sheet 20 for floor heating has a structure in which the upper surface portion 22 is supported by a plurality of partition walls 25, so that the upper surface portion 22 is recessed even when a large load is applied from above. There is no deformation.

  In this embodiment, since the inside of the shell 21 is divided into a large number of small chambers 29 by the partition walls 25, even if cracks and through holes are locally generated in the shell 21, the amount of leakage of the liquid latent heat storage material is It stops below the volume of one small chamber 29.

  The shell 21 can be efficiently manufactured by extrusion molding of a synthetic resin since the partition wall 25 and the side wall portions 24 and 25 extend in the parallel direction.

  The floor heating panel of the present invention may be pre-integrated with a substrate and a heat storage sheet for floor heating at a factory in advance, or the substrate and the heat storage sheet for floor heating may be brought into the construction site, respectively. It may be carried in and integrated at the construction site. Further, the foil body 30 may be provided at the construction site.

  The constituent materials of each member constituting the floor heating panel of the present invention will be described in detail below.

<Substrate>
The material of the base 11 is not particularly limited, but is usually preferably made of a foamed synthetic resin with high heat insulation properties, and is preferably a foamed synthetic resin plate, specifically, polyurethane foam, polyethylene foam, polypropylene foam. Body, polystyrene foam, polyvinyl chloride foam, polymethyl methacrylate foam, polycarbonate foam, polyphenylene oxide foam, foam of polystyrene and polyethylene mixture, and the like. Among these, polyethylene foam, polypropylene foam, polystyrene foam and the like are preferable. The thickness of these plate-like bodies constituting the substrate 11 is preferably selected within the range of 9 to 50 mm. The foaming ratio of the substrate 11 is preferably about 10 to 50 times.

<groove>
On the upper surface of the base 11, a plurality of grooves 13 for arranging the heat radiating pipes 14 are formed in parallel with the longitudinal direction of the base 11.

  The width of the groove 13 is preferably about the same as the outer diameter of the heat radiating tube 14. The groove 13 is formed so that the cross-sectional shape orthogonal to the extending direction is U-shaped or U-shaped. In particular, the heat transfer from the heat radiating tube 14 to the floor surface, the heat radiating tube 14 is formed in the groove 13. From the viewpoint of workability when burying, it is preferable to have a U-shaped cross section.

  The depth of the groove 13 is preferably approximately the same as the outer diameter of the heat radiating tube 14.

<Heat radiation tube 14>
As the heat radiating tube 14, a flexible tube is usually used. Specifically, any of a resin tube such as a cross-linked polyethylene tube or a polybutene tube, or a metal tube such as a copper tube or a steel tube may be used. Of these, metal pipes have high thermal conductivity compared to resin pipes, but they are heavy, have problems such as workability and rusting, and also increase costs, so when used for floor heating panel applications, A resin tube is preferred.

  There is no particular limitation on the cross-sectional shape (cross-section in the direction perpendicular to the length direction) of the heat radiating tube 14, and it is generally circular as shown in FIG. 1, but it should be oval or elliptical. Thereby, the contact area of the heat radiating tube 14 and the heat storage sheet 20 can be increased, and the heat radiation efficiency to the upper surface side can be further increased. However, in this case, the shape of the groove 13 provided in the base 11 is appropriately designed following the shape of the heat radiating tube 14.

  The size of the heat radiating pipe 14 can be changed according to the floor heating panel construction target, the type of heat medium to be circulated, and the temperature, but generally the outer diameter is about 6 mm to 13 mm and the inner diameter is about 4 mm to 10 mm. The wall thickness is about 0.8 mm or more and 2.0 mm or less.

<Heat medium>
Examples of the heat medium (heating medium) passed through the heat radiating pipe 14 include warm water, water vapor, heated oil, or antifreeze such as an ethylene glycol aqueous solution and a propylene glycol aqueous solution, and preferably hot water.

<Heat transfer material>
In order to efficiently transfer the heat from the heat radiating tube 14 to the heat storage sheet 20, a heat transfer material (not shown) may be provided as described above.

  The heat transfer material is preferably made of a heat conductive metal material such as aluminum or copper, particularly aluminum.

  It is preferable that the heat transfer material has a U-shaped section having a U-shaped cross-sectional shape and a pair of projecting portions projecting in opposite directions from the upper end of the U-shaped portion.

<Shell 21>
The shell 21 is preferably made of a synthetic resin such as polypropylene, polyethylene, polystyrene, polyethylene terephthalate, ABS, or polyvinyl chloride. Particularly, the shell 21 is made of a thermoplastic synthetic resin because it can be melt-molded such as extrusion molding and injection molding. It is preferable that The dimension in the thickness direction of the shell 21 is preferably about 1 to 6 mm. Moreover, various additives which can generally be added to resin, such as various fillers, may be contained.
The width of the small chamber 27 in the shell 21 is preferably about 5 to 50 mm.

<Latent heat storage material 27>
As the latent heat storage material, a material having a melting temperature of 30 to 60 ° C., particularly 40 to 50 ° C. is suitable. Such latent heat storage materials include sodium acetate trihydrate (CH ₃ COONa · 3H ₂ O) (melting point 58 ° C.), sodium thiosulfate pentahydrate (Na ₂ S ₂ O ₃ · 5H ₂ O) (melting point 48 ° C), sodium sulfate decahydrate (Na ₂ SO ₄ · 10H ₂ O) (melting point 32 ° C.), calcium chloride hexahydrate (CaCl ₂ · 6H ₂ O) (melting point 30 ° C.) alone or the above substance Examples thereof include a mixed salt obtained by combining two or more kinds.
The melting temperature of the latent heat storage material 29a is preferably about 50 to 60 ° C., the melting temperature of the latent heat storage material 29b is preferably about 40 to 50 ° C., and the melting temperature of the latent heat storage material 29c is preferably about 30 to 40 ° C. That is, the melting temperature of the latent heat storage material 29b is preferably 0 to 20 ° C. lower than the melting temperature of the latent heat storage material 29a, and the melting temperature of the latent heat storage material 29c is 10 to 30 ° C. lower. It is preferable.

<Foil body 30>
As the type of the foil body 30, a non-woven fabric or a woven fabric or a film of synthetic resin fibers such as polyethylene, polypropylene, and nylon is suitable. The foil body 30 preferably has a thickness of about 30 to 500 μm, particularly about 80 to 200 μm.

<Outer material layer>
In the present invention, a surface material layer may be further provided on the foil body 30.

  Although there is no restriction | limiting in particular as a surface material layer, The thing provided with the cushioning material layer of a lower surface side and the floor surface material layer laminated | stacked on this is preferable. However, the cushion material layer is not necessarily required, and only the floor surface material layer may be used.

  The cushion material layer includes, for example, a foamed resin such as a polyurethane foam or a polyolefin-based foam, a thermoplastic elastomer, or a nonwoven fabric from the viewpoint of obtaining an excellent walking sensation on the floor surface material layer.

  The thickness of the cushioning material layer varies depending on the material and the floor heating panel construction target, but it does not make the floor heating panel excessively thick and does not impair the heat transfer efficiency from the piping. Is preferably in the range of 1 mm to 6 mm, particularly 2 mm to 5 mm.

  The floor surface material layer is intended to protect the substrate in which the pipe is embedded and to enhance the design and durability of the floor surface appearance. Usually, it is made of wood such as plywood or foam rubber, preferably wood. A plastic film, a nonwoven fabric, a reinforced paper, etc., preferably a natural timber board or a reinforced paper, is usually attached to the surface thereof.

  If the thickness of the floor surface material layer is too thin, the strength will be insufficient and it will be easily damaged, and if it is too thick, the heat transfer efficiency from the piping will decrease and the thickness of the floor heating panel will increase. The range is preferable.

  In addition, you may give resin coating etc. further on such a floor surface material layer.

[Another embodiment]
In the above embodiment, there are a total of three small chambers (29b, 29c) between the small chambers 29a, 29a in which the heat radiating pipe 14 does not exist, but this number may be 1, 2 or 4 or more. Good.
In the present invention, the latent heat storage material in the small room having the heat radiating pipe 14 on the lower side has a relatively low melting temperature, and the latent heat storage material in the small room away from the heat radiating pipe 14 has a relatively high melting temperature. A thing may be used.

  In the present invention, as shown in FIG. 5, the small joist 12 may be omitted, and the portion of the small joist 12 may also be constituted by the base 11.

  FIGS. 5A and 5B are cross-sectional views corresponding to FIGS. 1A and 1B, respectively. The other configuration of the embodiment of FIG. 5 is the same as that of the above embodiment, and the same reference numerals indicate the same parts.

  In the present invention, as shown in FIG. 6, the shell partition walls may be square, hexagonal, etc. (quadrature in FIG. 6) honeycombs.

  The shell 40 shown in FIG. 6 is formed by superimposing a plate 42 from above and below on a cross-shaped honeycomb 41 and bonding the plate 42 and the honeycomb 41 by vibration welding, bonding, or the like. In FIG. 6, only the upper plate 42 is shown.

In order to manufacture a heat storage sheet for floor heating using the shell 40, the plate 42 is fixed to the lower surface of the honeycomb 41 to form an upper open container. Then, after filling each small chamber partitioned by the honeycomb 41 with the latent heat storage material, the upper plate 42 is placed and fixed. Then, a floor heating panel is obtained by sticking the foil body 30 (not shown in FIG. 6) on the upper surface of the shell 40 as necessary. Also in this case, the latent heat storage materials in some of the small chambers have different melting temperatures from the latent heat storage materials of the other small chambers.
In the present invention, there may be a small chamber not filled with the latent heat storage material in the small chamber in the shell.

  Each of the above embodiments is an example of the present invention, and the present invention can take forms other than those shown in the drawings. For example, instead of sticking the foil body 30 to the entire top surface of the shell, a synthetic resin sheet may be stuck only on the edge portion of the top surface of the shell and projected from the shell.

It is sectional drawing which shows embodiment of the floor heating panel of this invention. It is a one part enlarged view of FIG. It is a disassembled perspective view of the floor heating panel of FIG. It is a disassembled perspective view of the shell of the floor heating panel of FIG. It is sectional drawing which shows the floor heating panel which concerns on another embodiment. It is a disassembled perspective view of the shell used for different embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Floor heating panel 10 Board | substrate 11 Base | substrate 12 Koneta 13 Groove 14 Radiation pipe 20 Heat storage sheet | seat for floor heating 21 Shell 25 Partition 27 (27a, 27b, 27c) Latent heat storage material 29 (29a, 29b, 29c) Small chamber 30 Foil body 30a Side 40 shell

Claims (4)

In a floor heating panel comprising a substrate having a heat radiating tube, and a heat storage sheet for floor heating provided on the upper side of the substrate,
The heat storage sheet for floor heating is
A hollow plate-like shell having vacancies inside;
Ri Na and a latent heat storage material the filled in an empty compartment of the shell,
The vacancies in the shell are partitioned into a plurality of chambers;
The other chamber is have a chamber different latent heat storage materials having melting temperatures is filled,
The melting temperature of the latent heat storage material filled in the small chamber where the heat radiating tube is arranged on the lower side is higher than the melting temperature of the latent heat storage material filled in the small chamber where the radiating tube is not arranged on the lower side. Features a floor heating panel. In claim 1 , the chamber extends in parallel in one direction,
The heat radiating tube extends in a direction parallel to the extending direction of the small chamber,
The floor heating panel, wherein the heat radiating pipe is disposed only below a part of the small chambers. In claim 2 , a plurality of the heat radiating pipes are provided in parallel,
A floor heating panel characterized in that at least one small room not having a heat radiating pipe is arranged on the lower side between small rooms having a heat radiating pipe arranged on the lower side. The shell according to any one of claims 1 to 3 ,
An upper surface,
A lower surface portion opposed to the upper surface portion at a predetermined interval;
A peripheral wall portion connected to a peripheral portion of the upper surface portion and the lower surface portion;
A partition wall that divides a space between the upper surface portion and the lower surface portion into a plurality of small chambers;
The floor heating panel according to claim 1, wherein the partition wall extends in parallel in one direction, whereby the plurality of small chambers are provided to extend in parallel to the one direction.

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