JP6854175B2 - Underfloor heating system, building and unit building - Google Patents

Description

The present disclosure relates to a floor heating system, a building equipped with this floor heating system, and a unit building equipped with this floor heating system.

Conventionally, there has been known a floor heating system in which a thin heating device is installed in the underfloor space of the second floor or higher of a building to enable floor heating even on the second floor or higher (for example). See Patent Document 1).
In this conventional technique, in the underfloor space of a building, a radiator is provided under the metal floor support material that supports the floor material forming the underfloor space. The heat radiating body has a structure in which a circulation path for circulating the heat medium is arranged in a wave shape over the entire heat radiating body.

Japanese Unexamined Patent Publication No. 2012-122656

However, in the prior art, the circulation path of the heat radiating body is provided only in the heat radiating body, and the connecting pipeline for supplying the heat medium from the heat source extends to the vicinity of the heat radiating body under the floor on the second floor of the heat radiating body. The structure was connected to the circulation path.

For this reason, if a connection failure occurs at the connection portion between the connection pipeline and the circulation path of the radiator, there is a risk that heat medium leaks to the ceiling on the first floor. In addition, as a countermeasure in the event of such a problem, it is necessary to provide an inspection port on the floor on the second floor or the ceiling on the first floor, which increases the number of parts, increases the manufacturing cost, and improves the appearance quality. There was a risk of deterioration. Further, when the inspection port is provided on the floor on the second floor, furniture or the like cannot be placed on the inspection port, which reduces the degree of freedom in the interior layout.

This disclosure has been made by paying attention to the above-mentioned problems, and it is possible to prevent heat medium leakage on the multi-story floor and to eliminate the need to install an inspection port on the multi-story floor and the ceiling on the lower floor thereof. It is an object of the present invention to provide a floor heating system, a building equipped with this floor heating system, and a unit building equipped with this floor heating system.

In order to achieve the above object, the floor heating system of the present invention
A radiator that is installed in the underfloor space of the multi-story floors on the second floor and above of the building and has a circulation path through which the heat medium is circulated.
A heat source that heats the heat medium and is connected to the circulation path via a connecting pipe to circulate the heat medium with the heat radiating body.
With
The floor is characterized in that the circulation path of the radiator extends under the floor of the first floor of the building, and the connecting portion between the circulation path and the connecting pipeline is provided under the floor of the first floor. It was a heating system.

The heat radiating body is formed in a sheet shape by arranging the circulation path between the upper and lower sheet-shaped members, and the circulation path is formed by arranging the circulation path between the upper and lower sheet-like members, and the circulation path includes a portion arranged by the heat radiating body and an end of the heat radiating body. It is preferable that the extension portion extending from the portion to the underfloor of the first floor is integrally and continuously formed.
Further, a plurality of the heat radiating body and the circulation path may be arranged side by side, and the circulation path may be connected in parallel to the heat source.
Further, a plurality of the heat sources may be provided, and the plurality of heat radiating bodies and the circulation path may be connected in parallel to at least one of the heat sources.
Then, a heat insulating material may be provided on the lower side of the heat radiating body.

Further, the building may be equipped with the above floor heating system.
Then, it may be a unit building provided with the floor heating system.
Further, the building unit may be a building unit in which a heat insulating material is provided on the upper surface of the ceiling material in advance at the factory and a heat radiating body is provided on the upper surface of the heat insulating material.

In the floor heating system of the present disclosure, when a heat medium leak occurs due to a poor connection at the connection portion, the leak occurs under the floor on the first floor. Therefore, the heat medium does not leak to the ceiling on the lower floor, which does not damage the ceiling or deteriorate the appearance quality, and the maintenance work is also the work under the floor on the first floor, which is excellent in workability. Further, the inspection port for the floor on the multi-story floor and the ceiling on the lower floor is not required, and the cost can be reduced and the deterioration of the appearance quality can be suppressed, and the degree of freedom in the interior layout can be improved.

Further, in the case where the portion arranged in the radiator of the circulation path and the extension portion extending to the underfloor on the first floor are integrally and continuously formed, the seam is eliminated over the entire circulation path. , Heat medium leakage can be prevented more reliably.
Further, in the case where a plurality of heat sources are provided, the temperature of the heat medium supplied to the plurality of radiators and the circulation path can be kept high as compared with the case where a single heat source is provided, and high heating performance can be obtained.
If the heat insulating material is provided on the lower side of the heat radiating body, it is possible to prevent the ceiling on the lower floor from being deformed by the heat due to the heat of the heat radiating body.

Further, in the building and the unit building of the present disclosure, it is possible to provide a building and a unit building provided with a floor heating system having the above-mentioned effect.

It is the schematic which shows the vertical section of the unit building which installed the floor heating system of Embodiment 1 of this invention. It is an arrangement explanatory view which shows the arrangement of the radiator on the floor part of the 2nd floor of the building unit which installed the floor heating system of Embodiment 1. FIG. It is a connection explanatory drawing which shows typically the connection state of the radiator body of the floor heating system of Embodiment 1 and a heat pump. It is sectional drawing which shows the floor part of the 2nd floor in the floor heating system of Embodiment 1. FIG. It is sectional drawing which shows the radiator in the floor heating system of Embodiment 1. FIG. It is an exploded perspective view which shows the radiator body in the floor heating system of Embodiment 1. FIG. It is explanatory drawing of the connection state of the radiator module of the radiator of the floor heating system of Embodiment 1. FIG. It is sectional drawing which shows the single connection part in the floor heating system of Embodiment 1. FIG. It is sectional drawing which shows the split connection part in the floor heating system of Embodiment 1. FIG. It is sectional drawing of the foundation sleeve part in the floor heating system of Embodiment 1. FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Embodiment 1)
[Unit building configuration]
First, the overall configuration of the unit building H in which the floor heating system A of the first embodiment is installed will be described with reference to FIGS. 1 and 2.

FIG. 1 is a vertical sectional view showing a schematic configuration of a unit building H provided with the floor heating system A of the first embodiment (cross section at the position of the S1-S1 line in FIG. 2), and FIG. 2A is a 2 of the unit building H. It is a top view which shows the arrangement of the radiator under the floor.

As shown in FIG. 1, the unit building H is constructed by assembling a building unit U1 on the first floor and a building unit U2 on the second floor on the foundation concrete B.
Then, in the unit building H constructed in this way, an outer wall portion WL and a ceiling portion Rf that closes the upper end opening of the outer wall portion WL are formed.
Further, in the unit building H, the underfloor space 31 on the first floor and the above-floor space 32 are partitioned by the floor portion 10 on the first floor, and the above-floor space 32 on the first floor and the above-floor space 33 on the second floor are divided by the floor portion 20 on the second floor. It is divided into.

Further, in the floor portion 20 on the second floor, the floor material 21 is supported by floor beams 22, ... As a metal floor support material, as shown in FIG. 3 in advance at the factory when the building unit U2 is constructed. It has a structure.
Further, an underfloor space 34 on the second floor is formed below the floor 20 on the second floor and the ceiling 40 on the first floor. Further, the ceiling portion 40 is provided with a ceiling beam 41 and a ceiling material 42 of the building unit U1 on the first floor.
In the building unit U1 on the first floor, a heat insulating material 43 such as glass wool is provided on the upper side of the ceiling material 42, and a sheet-shaped radiator 50 which is a component of the floor heating system A is further provided on the upper surface of the heat insulating material 43. Is provided.

[Floor heating system configuration]
Next, the configuration of the floor heating system A will be described.
As shown in FIG. 1, the floor heating system A includes a heat radiating body 50, heat pumps 61 and 62 as heat sources, and connecting pipes 70 connected to the heat pumps 61 and 62.

<Structure of radiator>
First, the configuration of the heat radiating body 50 will be described.
As shown in FIGS. 4A, 4B, and 4C, the heat radiating body 50 has a wave-shaped heat radiating pipe (circulation pipe) 53 between the heat conductive sheet 51 and the heat insulating sheet 52, which are rectangular sheet-like members. It is formed by being folded back and arranged. As the heat conductive sheet 51, for example, a metal-based sheet such as an aluminum sheet can be used, and as the heat insulating sheet 52, a resin sheet or a foamed resin sheet can be used.

Further, as the heat radiating pipe 53, one made of cross-linked polyethylene is used. Cross-linked polyethylene is lightweight, flexible, excellent in corrosion resistance, excellent in impact resistance, excellent in low temperature characteristics, excellent in electrical characteristics (not subject to electrical corrosion), excellent in stress corrosion resistance, and in creep performance. It has the properties of excellent, excellent chemical resistance, and excellent heat aging resistance.

Further, the heat radiating body 50 is formed in an area corresponding to the application location. In this case, as shown in FIG. 4C, by arranging a plurality of radiator modules 50a composed of a preset rectangular heat conductive sheet 51 and a heat insulating sheet 52 in series in series, one radiator 50 can be used. The dimensions in the left-right direction in FIG. 4C are adjusted. The heat radiating pipe 53 in one heat radiating body 50 is formed by one, not limited to the number of heat radiating body modules 50a, and does not have a seam or a connecting portion in the middle between the heat radiating bodies modules 50a. It has a structure.

Since the heat radiating body 50 is arranged by folding the heat radiating pipe 53 into a wave shape as described above, one end of the heat radiating pipe 53 is arranged at both ends of the rectangle. Further, each end of the heat radiating pipe 53 includes heat radiating pipe extension portions 53a and 53b extending outward from the portion sandwiched between the heat conductive sheet 51 and the heat insulating sheet 52 of the heat radiating body 50. The arrow drawn along the pipe in the figure indicates the circulation direction of hot water as a heat medium, and the heat radiation pipe extension portion 53a is extended to the hot water sending side (supply side). 53b is extended to the return side (reflux side) of hot water.

<Arrangement of radiator>
Next, the arrangement of the radiator 50 on the floor 20 on the second floor will be described.
FIG. 2A is a layout explanatory view showing an outline of the arrangement of the heat radiating body 50 in the plan view of the second floor of the unit building H, and FIG. 2B shows the heat radiating body 50 by the connecting pipe 70, the first heat pump 61, and the second heat pump 62. It is a connection explanatory drawing which shows typically the connection state of.

As shown in FIG. 2A, the heat radiating bodies 50 are installed at a plurality of locations on the floor portion 20 on the second floor. These heat radiating bodies 50 include two heat radiating bodies 50 arranged side by side in the left-right direction in the figure as a set, the first heat radiating bodies 50A-1, 50A-2, the second heat radiating bodies 50B-1, 50B-2, and the like. The third heat radiating bodies 50C-1, 50C-2, the fourth heat radiating bodies 50D-1, 50D-2, the fifth heat radiating bodies 50E-1, 50E-2, and the sixth heat radiating bodies 50F-1, 50F-2 are provided. ing. Further, when these are collectively referred to, they are simply referred to as a heat radiating body 50, while when a set of left and right ones is referred to as one unit, the notation of -1 and -2 is omitted and the first to sixth heat dissipation Notated as bodies 50A to 50F.

As shown in the drawing, in each heat radiating body 50, the heat radiating pipe extension portions 53a and 53b, which are one ends of the heat radiating pipe 53 from both ends in the left-right direction in the drawing, are the underfloor space 31 on the first floor (see FIG. 1). Has been extended to.

<Connection between heat dissipation pipe and connection pipe>
As described above, the heat radiating pipe extension portions 53a and 53b of the heat radiating pipe 53 extended to the underfloor space 31 on the first floor are either the first heat pump 61 or the second heat pump 62 via the connecting pipe 70, respectively. It is connected to the crab.

The connecting pipe 70 corresponds to the heat radiating pipe extension portions 53a, 53b of the first to sixth heat radiating bodies 50A to F to be connected, and the first connecting pipes 70Aa, 70Ab, the second connecting pipes 70Ba, 70Bb, and the first The three connecting pipes 70Ca and 70Cb, the fourth connecting pipes 70Da and 70Db, the fifth connecting pipes 70Ea and 70Eb, and the sixth connecting pipes 70Fa and 70Fb are provided. These are also collectively referred to as a connecting pipe 70. Further, the lowercase letter a of the code indicates the one on the sending side of hot water, and b indicates the one on the returning side.

Explaining the above connection in detail, the heat radiating pipe extension portions 53a and 53b of the first heat radiating bodies 50A-1 and 50A-2 are connected to the first heat pump 61 via the first connecting pipes 70Aa and 70Ab. The heat radiating pipe extension portions 53a and 53b of the second heat radiating bodies 50B-1 and 50B-2 are connected to the first heat pump 61 via the second connecting pipes 70B and 70Bb.

Here, the heat radiating pipe extension portions 53a and 53b of the first heat radiating body 50A and the second heat radiating body 50B are connected to the first connecting pipe 70A and the second connecting pipe 70B, respectively, via the independent connecting portion 81.
As shown in FIG. 5A, the independent connecting portion 81 is formed by connecting the independent heat radiating pipe extension portion 53a (53b) and the independent connecting pipe 70 via the joint socket 110. That is, the connection is 1: 1.

The heat radiating pipe extension portions 53a and 53b of the third heat radiating bodies 50C-1 and 50C-2 are connected to the second heat pump 62 via the third connecting pipes 70Ca and 70Cb.
The connection between the heat radiating pipe extension portions 53a and 53b of the third heat radiating bodies 50C-1 and 50C-2 and the third connecting pipes 70Ca and 70Cb is made via the branch connecting portion 82. As shown in FIG. 5B, the branch connecting portion 82 is formed by connecting one connecting pipe 70 and two heat radiating pipe extension portions 53a (53b) via a three-pronged branch joint 120.

That is, the two heat radiating pipe extension portions 53a and 53a on the feeding side of the third heat radiating body 50C are connected to the third connecting pipe 70Ca on the feeding side via the branch connecting portion 82. Further, the two return-side heat-dissipating pipe extension portions 53b and 53b of the third heat-dissipating body 50C are connected to one return-side third connection pipe 70Ca via the branch connection portion 82.

As for the fourth heat radiating body 50D, the fifth heat radiating body 50E, and the sixth heat radiating body 50F described below, the two heat radiating pipe extension portions 53a and 53b are one, as in the case of the third heat radiating body 50C described above. It is connected to the connection pipe 70.
That is, the heat radiating pipe extension portions 53a and 53b of the fourth heat radiating bodies 50D-1 and 50D-2 are connected to the second heat pump 62 via the fourth connecting pipes 70Da and 70Db.
Similarly, the heat radiating pipe extension portions 53a and 53b of the fifth heat radiating bodies 50E-1 and 50E-2 are connected to the second heat pump 62 via the fifth connecting pipes 70Ea and 70Eb.
Similarly, the heat radiating pipe extension portions 53a and 53b of the sixth heat radiating bodies 50F-1 and 50F-2 are connected to the second heat pump 62 via the sixth connecting pipes 70Fa and 70Fb.

The heat pumps 61 and 62 are also connected to a radiator (not shown) installed on the floor 10 on the first floor, but the radiator installed on the floor 10 on the first floor and its connection state. Is not shown.

As described above, the heat radiating pipe extension portions 53a and 53b of the radiator body 50 extend to the underfloor space 31 on the first floor, and from the second floor to the first floor, the piping portion provided in the outer wall portion WL. It is routed through 91-96.

In each of the piping sections 91 to 96, as shown in FIG. 2B, in each of the piping sections 91 to 96, the heat radiation pipe extension portions 53a and 53b are arranged in a set of four. The piping units 91 to 96 are referred to as the piping unit 90 when they do not refer to specific parts or when they are generically referred to.

In the piping portion 90 provided on the outer wall portion WL, a sheath pipe 90a (see FIGS. 5A and 5B) is arranged along the inside of the outer wall portion WL in the vertical direction, and a connecting pipe is provided. 70 is inserted through the sheath tube 90a.

Further, the connecting pipe 70 penetrates the rising portion of the foundation concrete B for the arrangement in the underfloor space 31 on the first floor and the connection between the underfloor space 31 and the external heat pumps 61 and 62. In this case, as shown in FIG. 6, four connecting pipes 70 are inserted as a set in the foundation sleeve S provided so as to penetrate the rising portion of the foundation concrete B. The circumference of the connecting pipe 70 is filled with a sealing material 73 such as silicon, and the outer circumference thereof is wrapped with a light-shielding tape 75. Then, a mortar 74 is filled on the outer circumference between the light-shielding tape 75 and the foundation sleeve S, and the foundation sleeve S is closed in a waterproof state.

In the basic sleeve S, a power line 130 for supplying AC power to the heat pumps 61 and 62 is also inserted together with the connecting pipe 70.
In this way, by penetrating the power line 130 together with the connecting pipe 70 at the penetrating portion of the foundation concrete B, the work efficiency can be improved and the strength of the foundation concrete B can be ensured.

(Manufacturing method of unit building of embodiment)
In constructing the above-mentioned unit building H, the heat insulating material 43 is installed on the upper surface of the ceiling material 42 of the building unit U1 on the first floor, and the heat radiating body 50 is installed on the upper surface of the heat insulating material 43. The building unit U2 on the second floor will be installed.
Therefore, as shown in FIG. 3, the beam 22 of the building unit U2 on the second floor is arranged on the heat radiating body 50.

(Action of Embodiment)
Next, the operation of the floor heating system of the first embodiment will be described.
When the floor heating system A is operating, hot water as a heat medium passes from the heat pumps 61 and 62 through the connecting pipes 70Aa to 70Fa on the sending side, passes through the heat radiating pipe 53 of the radiator 50, and the connecting pipes 70Ab on the return side. The circulation of returning to the heat pumps 61 and 62 through 70 Fb is repeated.

As a result, in the floor space 33 on the second floor, the floor is generated by the radiant heat from the radiator 50, the conduction heat via the floor beams 22, ... and the heat due to the convection of warm air between the floor beams 22, ... Heating is done. At this time, since the heat insulating material 43 is provided under the heat radiating body 50, the floor heating can be efficiently performed without heat escaping to the floor space 32 on the first floor, and the ceiling beams 41 and the ceiling beam 41 and It is possible to suppress the influence of heat on the ceiling material 42 and the like.
Moreover, since the heat radiating body 50 is divided into a plurality of parts and hot water is supplied in parallel to each of the heat radiating bodies 50, temperature unevenness is unlikely to occur on the floor portion 20 on the second floor.

Further, in the structure for circulating hot water in this way, there is a possibility that hot water may leak at the connection portions 81 and 82 due to aged deterioration and the influence of shaking of the unit building H due to an earthquake or the like. In the first embodiment, the heat radiating pipe 53 of each heat radiating body 50 extends the heat radiating pipe extension portions 53a and 53b to the underfloor space 31 on the first floor, and connects the connecting portions 81 and 82 to the connecting pipe 70. It was placed in the underfloor space 31 on the first floor. Therefore, even if a liquid leak occurs in any of the connecting portions 81 and 82, the appearance quality due to the liquid leak in both the floor portion 10 on the first floor, the floor portion 20 on the second floor, and the ceiling portion 40 on the first floor. The maintenance work is also the work under the floor on the first floor, and the workability is excellent.

(Effect of Embodiment 1)
The effects of the floor heating system of the first embodiment are listed below.
1) The floor heating system of the embodiment is
Heat dissipation provided in the underfloor space 34 of the floor portion 20 on the second floor as a multi-story floor provided on the second floor or higher of the unit building H, and provided with a heat radiating pipe 53 as a circulation path through which hot water as a heat medium is circulated. Body 50 and
Heat pumps 61 and 62 as heat sources that heat hot water and are connected to the heat radiating pipe 53 via a connecting pipe 70 as a connecting pipe and circulate the hot water between the heat radiating body 50 and the heat radiating body 50.
With
The heat radiating pipe extension portions 53a and 53b of the heat radiating pipe 53 of the heat radiating body 50 extend to the underfloor space 31 on the first floor of the unit building H, and the independent connecting portion 81 as a connecting portion between the heat radiating pipe 53 and the connecting pipe 70. The branch connection portion 82 is provided in the underfloor space 31 on the first floor.
Therefore, if hot water leaks due to poor connection at any of the connecting portions 81 and 82, the leak occurs in the underfloor space 31 on the first floor. Therefore, hot water does not leak to the ceiling 40 on the lower floor where the radiator 50 is installed, which does not damage the ceiling 40 or deteriorate its appearance quality, and the maintenance work is also performed on the underfloor space 31 on the first floor. The work is excellent in workability. Further, the inspection port of the floor 20 on the second floor and the ceiling 40 on the lower floor is not required, and the cost can be reduced and the deterioration of the appearance quality can be suppressed by that amount, and the degree of freedom in the interior layout can be improved. It becomes.

2) The floor heating system of the first embodiment is
The heat radiating body 50 is formed in a sheet shape by arranging a heat radiating pipe 53 between the heat conductive sheet 51 as the upper and lower sheet-shaped members and the heat insulating sheet 52.
The heat radiating pipe 53 is integrally formed with a portion arranged in the heat radiating body 50 and heat radiating pipe extension portions 53a and 53b extending from the end of the heat radiating body 50 to the underfloor space 31 on the first floor. It is characterized by being.
Therefore, the heat radiating pipe 53 has no seams throughout, and it is possible to more reliably prevent heat medium leakage in the underfloor space 34 on the second floor and the piping portions 90 (91 to 96) in the outer wall portion WL.

3) The floor heating system of the first embodiment is
A plurality of heat radiating bodies 50 and heat radiating pipes 53 are arranged side by side.
The heat radiating pipe 53 is connected in parallel to the heat pumps 61 and 62.
Therefore, as compared with the case where a plurality of heat radiating pipes 53 are connected in series, the temperature of the hot water in each heat radiating pipe 53 and the heat radiating body 50 is made uniform, and the temperature of the floor portion 20 on the second floor is uneven. Can be suppressed.

4) The floor heating system of the first embodiment is
Multiple heat pumps 61 and 62 are provided,
The plurality of heat radiating bodies 50 and the heat radiating pipe 53
A plurality of heat radiating bodies 50 and a heat radiating pipe 53 are connected in parallel to at least one heat pump 61 (62).
Therefore, the temperature of the hot water supplied to the plurality of heat radiating bodies 50 and the heat radiating pipe 53 can be kept high as compared with the one having only one heat source, and high heating performance can be obtained.

5) The floor heating system of the first embodiment is
A heat insulating material 43 is provided on the lower side of the heat radiating body 50.
Therefore, it is possible to suppress the influence of temperature due to the heat of the radiator 50 on the floor space 32 on the first floor and the ceiling 40 on the first floor.

6) The unit building of the first embodiment is
The floor heating system A according to any one of the first embodiments is provided.
Therefore, it is possible to provide a unit building provided with a floor heating system that achieves the effects of 1) to 5) above.
The floor heating system can be applied to buildings other than unit buildings.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes to the extent that the gist of the present invention is not deviated are described in the present invention. Included in the invention.

For example, in the embodiment, the floor portion of the second floor is exemplified as the multi-story floor to which the radiator body is provided, but the radiator body may be provided on the floor portion of the third floor or higher.
Further, in the embodiment, an example in which the floor heating system is applied to a unit building is shown, but the building to be applied is not limited to the unit building, and is applied to, for example, a building built by a conventional construction method. It can also be applied to buildings other than residential buildings.
Further, the heat medium is not limited to hot water, and other liquids and gases may be used.

Further, the number of radiators and the number of heat sources (heat pumps) are also not limited to the numbers shown in the embodiments. Further, the heat source is not limited to the heat pump, and an absorption chiller-heater, a heating / cooling device using a Peltier element, a liquid fuel, a gas fuel, a heat source using electricity, or the like may be used.

Further, in the embodiment, a plurality of heat radiators connected in parallel to each of the plurality of heat pumps as heat sources are shown, but at least one or a plurality of heat radiators are used for all the heat sources. It may be connected in series.
Further, in the embodiment, the heat insulating material is provided on the lower side of the heat radiating body, but the present invention is not limited to this, and the heat insulating material may be omitted.

In the embodiment, the heat radiating body is formed in a sheet shape, but the heat radiating body is not limited to the sheet shape as long as it has a circulation path for a heat medium and has a structure for warming the floor.
Further, the circulation path is not limited to the one in which the portion arranged to the radiator and the extension portion of the radiator pipe extended from the radiator are integrally continuous, but the connection configuration is highly reliable. As long as the seams are connected by, a seam may be provided in the middle.

Further, in the embodiment, a cross-linked polyethylene pipe is used as the heat radiating pipe as a circulation path, but if the pipe body can circulate the heat medium, another resin pipe, a metal pipe, or the like Can be used.

In the embodiment, the heat insulating material 43 and the heat radiating body 50 are installed at the construction site, but the present invention is not limited to this. Specifically, in the building unit U1 on the first floor, the heat insulating material 43 may be installed on the upper surface of the ceiling material 42 in advance at the factory, and the heat radiating body 50 may be installed on the upper surface of the heat insulating material 43.
In this case, it is not necessary to install a heat insulating material or a heat radiating body at the construction site, the workability at the construction site is excellent, and the construction period can be shortened.

A Floor heating system (of the embodiment) H unit Building U1 Building unit WL Outer wall part 10 (1st floor) Floor part 20 (2nd floor) Floor part (multi-story floor)
31 Underfloor space (1st floor) 34 (2nd floor) Underfloor space 40 (1st floor) Ceiling 43 Insulation 50 Heat dissipation body 50A-1 1st heat dissipation body 50A-2 1st heat dissipation body 50B-1 2nd heat dissipation Body 50B-2 Second radiator 50C-1 Third radiator 50C-2 Third radiator 50D-1 Fourth radiator 50D-2 Fourth radiator 50E-1 Fifth radiator 50E-2 Fifth radiator 50F-1 6th radiator 50F-2 6th radiator 51 Thermal conductor (sheet-like member)
52 Insulation sheet (sheet-like member)
53 Heat dissipation pipe (circulation path)
53a Heat dissipation pipe extension (feed side)
53b Heat dissipation pipe extension (return side)
61 (1st) heat pump (heat source)
62 (Second) heat pump (heat source)
70 Connection pipe 70Aa First connection pipe (feed side)
70Ab 1st connection pipe (return side)
70Ba 2nd connection pipe (feed side)
70Bb 2nd connection pipe (return side)
70Ca 3rd connection pipe (feed side)
70Cb 3rd connection pipe (return side)
70Da 4th connection pipe (feed side)
70Db 4th connection pipe (return side)
70Ea 5th connection pipe (feed side)
70Eb 5th connection pipe (return side)
70F 6th connection pipe (feed side)
70Fb 6th connection pipe (return side)
81 Single connection 82 Branch connection 90 Piping

Claims (6)

A radiator that is installed in the underfloor space of the multi-story floors on the second floor and above of the building and has a circulation path through which the heat medium is circulated.
A heat source that heats the heat medium and is connected to the circulation path via a connecting pipe to circulate the heat medium with the heat radiating body.
With
The circulation path of the heat radiating body, is extended to the floor of the ground floor of the building, the connecting portion between the connecting pipe and the circulation path is provided et is below the floor of the ground floor,
The heat radiating body is formed in a sheet shape by arranging the circulation path between the upper and lower sheet-shaped members.
The circulation path has a portion allocated to the radiator body and an extension portion extending from the end portion of the radiator body to the underfloor of the first floor, and has a seam or a connecting portion. A floor heating system characterized by being formed continuously without any. In the floor heating system according to claim 1,
A plurality of the radiator and the circulation path are arranged side by side,
A floor heating system characterized in that the circulation path is connected in parallel with the heat source. In the floor heating system according to claim 2.
A plurality of the heat sources are provided,
A floor heating system characterized in that a plurality of the radiator and the circulation path are connected in parallel to at least one of the heat sources. In the floor heating system according to any one of claims 1 to 3.
A floor heating system characterized in that a heat insulating material is provided under the heat radiating body. A building characterized by having the floor heating system according to any one of claims 1 to 4. A unit building comprising the floor heating system according to any one of claims 1 to 4.

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