JP2003279058A - Heating device of under-the-floor heat accumulation type and building equipped with it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating device of under-the-floor heat accumulation type free of deterioration of its foundation, and also provide a building equipped with such a heating device. <P>SOLUTION: The heating device 1 of under-the-floor heat accumulation type is composed of a heat accumulator 2 and a heater 3 to give heat to the accumulator 2 and installed in the space 15 under the floor bounded by the building foundation 11 and the floor part 14 to perform heating of the building, wherein the heat accumulator 2 is built in a heat insulating vessel 4 and installed so as not to touch directly the earth-floored room foundation 13 of the building foundation 11. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underfloor heat storage / heating device and a building equipped with the same.

[0002]

2. Description of the Related Art Conventionally, a heat storage type foundation and a structure of a building having the same are known as described in Japanese Patent Laid-Open No. 2001-20403.

The object described in the above publication is to provide a heat storage type foundation for a building such as a highly airtight and highly heat-insulated wooden house, in which a foundation rising portion (foundation beam) and a foundation bottom portion (foundation). A planar heating element was embedded in the bottom of a concrete foundation having a slab), and the entire outer circumference of the foundation rising portion and the foundation bottom was covered with a heat insulating material.

[0004]

However, in the one described in the above publication, since the sheet heating element is embedded in the bottom portion of the concrete foundation, the concrete foundation is heated to a high temperature when the sheet heating element is energized. , When not energized, it is cooled. In order to make the living part have an appropriate temperature, it was necessary to heat the bottom of the foundation away from the living part. As a result, heating and cooling of the concrete foundation are repeated for a long period of time, which causes problems such as cracking of the concrete foundation and deterioration of the concrete foundation.

Therefore, an object of the present invention is to solve the above problems and provide an underfloor heat storage and heating system without deterioration of the foundation, and a building equipped with the system.

[0006]

The invention according to claim 1 is
An underfloor heat storage heating device comprising: a heat storage body; and a heater for heating the heat storage body, which is installed and heated in an underfloor space surrounded by a building foundation and a floor of the building, wherein the heat storage body is The feature is that it can be installed so as not to come into direct contact with the building foundation.

In the invention according to claim 1, the heat storage body is made of stone, gravel, sand, brick, so as to withstand high temperature.
A concrete block or the like is preferably used. As a heating heater, a heating wire heater, a planar electric heating element, C
An O ₂ heat pump or the like can be used. Further, in order to efficiently heat the heat storage body, a heater may be built in the heat storage body.

According to a second aspect of the present invention, in the underfloor heat storage and heating apparatus according to the first aspect, the heat storage body and the heater are contained in a heat insulating container, and air having an inlet and an outlet is provided inside the container. Is formed, and the air taken into the passage from the outside of the container through the inlet is in contact with the surface of the heated heat storage body for heat exchange and flows out from the outlet. To do.

In the invention according to claim 2, as the heat-insulating container, the container body is formed of a heat-resistant material such as metal or ceramics, and a heat insulating material is laid on the bottom of the container body, or an inner surface or an outer surface of the container body. You may make it cover a side surface with a heat insulating material. Further, the heating temperature may be adjusted by on / off controlling the flow of air passing through the passage. To this end, a fan for blowing air may be provided at either or both of the inlet and the outlet, and the fan for blowing air may be on / off controlled. Alternatively, a damper may be provided at the inlet or the outlet to control on / off of the air flow through the passage.

The invention according to claim 3 is the invention according to claim 1 or 2.
In the underfloor heat storage / heating apparatus described above, at least one of a solar cell, a fuel cell, and wind power generation can be used as a heat source of a heater.

In the invention described in claim 3, as a power source of the heater, it is preferable to use a solar cell and wind power generation in the daytime and use midnight power in the nighttime. The output of solar cells and wind power generation is not particularly limited, but the average output from 9:00 to 16:00 is 2kW to eliminate supplementation by daytime power.
It is desirable to have above.

The invention according to claim 4 is a building in which the underfloor heat storage heating device according to any one of claims 1 to 3 is installed in an underfloor space surrounded by a building foundation and a floor portion of the building. The building foundation is composed of a foundation rising portion that surrounds the outer peripheral portion and a foundation bottom portion that is formed inside the foundation rising portion and covers the lower surface of the building.The foundation rising portion and the foundation bottom portion near the foundation rising portion are covered with a heat insulating material. It is characterized by being

In the invention according to claim 4, as the heat insulating material, glass wool, rock wool, polystyrene foam, and other known heat insulating materials can be used. It is preferable to cover the entire outside or inside of the rising portion of the foundation rising portion and a portion of the foundation bottom portion at least 450 mm or more from the foundation rising portion with the heat insulating material.

According to a fifth aspect of the present invention, in the building according to the fourth aspect, an intake port for sucking air inside or outside the building to supply it to the underfloor space, and an outlet port for discharging the air in the underfloor space into the building. Is provided, and an air passage is formed so that the air sucked from the intake port contacts the surface of the heat storage body for heat exchange and is then guided to the discharge port.

In the invention according to the fifth aspect, each of the intake port and the discharge port may be directly connected to the underfloor heat storage heating device by a duct. By doing so, the thermal energy of the underfloor heat storage heating device is efficiently discharged into the building without loss. The duct may be made of metal such as iron, stainless steel or aluminum, or synthetic resin such as vinyl chloride resin, and may be covered with a heat insulating material in order to improve heating efficiency.

In the invention according to the fifth aspect, when a plurality of rooms are partitioned or provided on the upper and lower floors, a discharge port may be provided for each room for heating. At this time, a fan or a damper may be provided at the discharge port for adjusting the temperature of each room. Moreover, in order to maintain the cleanliness of air, it is preferable to install a filter at the discharge port. The filter may be provided at the intake port.

(Operation) According to the present invention having the above-mentioned structure, since the heat storage body can be installed so as not to come into direct contact with the building foundation, the heat storage heater is energized and the heat storage body is energized. The building foundation will not be heated to a high temperature even if the temperature rises. Therefore, there is no deterioration of the building foundation caused by repeated heating and cooling for a long time.

According to the second aspect of the present invention, since the heat storage body and the heater are contained in a heat insulating container, even if the heat storage body and the heater are installed directly on the foundation bottom of the building foundation, the foundation bottom is heated to a high temperature. There is no such thing. Therefore, there is no deterioration of the bottom of the foundation caused by repeated heating and cooling for a long time. An air passage having an inlet and an outlet is formed inside the container, and the air taken into the passage from the outside of the container through the inlet is brought into contact with the surface of the heated heat storage body for heat exchange. Since it flows out from the outlet, the underfloor heat storage heating device can be heated and heated only by installing it under the floor.

According to the third aspect of the present invention, since at least one of a solar cell, a fuel cell, and a wind power generator can be used as a heat source of the heater, heating can be performed without relying on external electric power, and heating can be performed. The running cost can be reduced.

Since the underfloor heat storage and heating device according to any one of claims 1 to 3 is a building installed in an underfloor space, the invention according to claim 4 is any one of claims 1 to 3 above.
It has the same effect as described in the section. And since the foundation rising part and the bottom of the foundation near the foundation rising part are covered with a heat insulating material, the heat insulation of the building foundation is enhanced, and the warm air in the underfloor space heated by the underfloor heat storage heating device does not easily escape to the outside. Become.

According to a fifth aspect of the present invention, there are provided an intake port for sucking air inside or outside the building to supply it to the underfloor space, and an outlet port for discharging the air in the underfloor space into the building.
An air passage is formed so that the air sucked from the intake port comes into contact with the surface of the heat storage body for heat exchange and is then guided to the discharge port. Therefore, the warm air in the underfloor space is discharged into the building through this outlet, and the inside of the building can be effectively heated by the convection effect of air together with the floor heating by the heat transfer from the underfloor.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an embodiment of the present invention, and is a cross-sectional view showing an underfloor structure of a building in which an underfloor heat storage heating device is installed.

(Underfloor heat storage and heating apparatus) As shown in FIG. 1, the underfloor heat storage and heating apparatus 1 is installed in an underfloor space 15 surrounded by a building foundation 11 and a floor portion 14 of the building.
The underfloor space 15 is heated.

The underfloor heat storage heating system 1 includes a heat storage body 2 and
A heating heater 3 for heating the heat storage body 2 is provided, and the heat storage body 2 can be installed so as not to come into direct contact with a foundation bottom portion 13 of a building foundation 11 described later. The specific configuration of the underfloor heat storage heating device 1 is as follows.

The heat storage body 2 is formed of a plate-shaped heat-resistant brick, and the electric heating heater 3 is built in the heat storage body 2.

The heat storage body 2 containing the heater 3 is housed in a heat-insulating container 4 having a bottom portion covered with a heat insulating material 6 such as glass wool or rock wool, and the heat storage body 2 does not come into direct contact with the base bottom portion 13. It is done like this.

The container 4 is a rectangular parallelepiped metal box body having an open top, and the top of the container 4 is substantially sealed by a lid 5. Inside the container 4 sealed by the lid 5, a space is provided between the heat storage body 2 and the lid 5, and an air passage 9 having an inlet 7 and an outlet 8 is formed.

The inlet 7 is formed in a rising portion on one side of the container 4, and the outlet 8 is formed in a rising portion on the other side of the container 4 facing the inlet 7. The outlet 8 is provided with a fan 10 for discharging the air in the container 4, and the air taken into the passage 9 from outside the container 4 through the inlet 7 is the surface of the heated heat storage body 2. The heat is exchanged in contact with, and is forcibly discharged from the outlet 8 by the fan 10.

(Building in which an underfloor heat storage and heating device is installed) As shown in FIG. 1, the underfloor heat storage and heating device 1 having the above-described structure is surrounded by a building foundation 11 and a floor portion 14 of the building. It is installed in the open space 15 under the floor.

The building foundation 11 is made of concrete with reinforcing bars and is composed of a foundation rising portion 11 surrounding the outer peripheral portion and a foundation bottom portion 13 formed continuously inside the foundation rising portion 11. The inside of the rising wall of the foundation rising portion 12 is covered with the heat insulating material 121, and the upper surface of the foundation bottom portion 13 in the range of about 1 m from the foundation rising portion 12 to the inside also includes the heat insulating material 13.
Covered with 1. Plate-shaped polystyrene foam is used for the heat insulating materials 121 and 131.

A floor portion 14 of the building is supported by the building foundation 11, and an outer wall 20 is provided on the outdoor side of the floor portion 14. An inner wall 21 is provided upright on the indoor side of the outer wall 20, but a heat insulating material 22 is provided inside the inner wall 21, and a ventilation layer 23 is formed between the heat insulating material 22 and the outer wall 20.

The floor portion 14 of the building is provided with an intake port 16 for sucking the air in the building and supplying it to the underfloor space 15, and a discharge port 17 for discharging the air in the underfloor space 15 into the building. . A blower fan 18 is provided at the discharge port 17.

The underfloor heat storage heating apparatus 1 is installed with the inlet 7 directed toward the intake port 16 and the outlet 8 directed toward the discharge port 17, and the underfloor space 15 has an arrow. Air passages are formed as indicated by R1, R2, R3 and R4. That is, from the intake port 16 to the arrow R1
The air sucked in the direction of is passed through the direction of arrow R2 and is guided to the passage 9 from the inlet 7 of the underfloor heat storage heating apparatus 1. In the passage 9, heat is exchanged by coming into contact with the surface of the heat storage body 2, and thereafter, is guided from the outlet 8 to the discharge port 17 through the direction of arrow R3, and is discharged into the room through the direction of arrow R4 by the blower fan 18. Is done.

(Operation of Embodiment) According to the underfloor heat storage / heating apparatus 1 of the present embodiment, since the heat storage body 2 having the heater 3 built therein is housed in the heat insulating container 4, the underfloor heat storage / heating apparatus. Even if 1 is installed directly on the foundation bottom 13 of the building foundation 11, the foundation bottom 13 will not be heated to a high temperature. Therefore, the building foundation 11 does not deteriorate due to repeated heating and cooling for a long time. An air passage 9 having an inlet 7 and an outlet 8 is formed inside the container 4, and the air taken into the passage 9 from the outside of the container through the inlet 7 is stored in the heated heat storage body 2. Since heat is exchanged in contact with the surface and flows out from the outlet 8,
As long as the underfloor heat storage heating device 1 is installed in the underfloor space 15, the underfloor space 15 can be heated and heated.

Since the underfloor heat storage heating device 1 is installed in the underfloor space 15 in the building of the present embodiment,
It has the same effect as above. The foundation rising portion 12 and the foundation bottom portion 13 near the foundation rising portion 12 are heat insulating materials 121, 1
Since it is covered with 31, the heat insulation of the building foundation 11 is enhanced, and the warm air in the underfloor space 15 heated by the underfloor heat storage heating device 1 is unlikely to escape to the outside.

Further, an intake port 16 for sucking the air in the building and supplying it to the underfloor space 15 and a discharge port 17 for discharging the air in the underfloor space 15 into the building are provided.
Since the air passage is formed so that the air sucked from the heat storage body 2 comes into contact with the surface of the heat storage body 2 to exchange heat with the heat storage body 2, and then is guided to the discharge port 17, the warm air in the underfloor space 15 is discharged from the discharge port 17. Is discharged from the inside of the building, and combined with floor heating by heat transfer from under the floor, the inside of the building can be effectively heated by the convection effect of air.

2 to 5 show another embodiment of the present invention, FIG. 2 is a sectional view showing an underfloor structure of a building in which an underfloor heat storage and heating device is installed, and FIG. It is sectional drawing which is a modification of a duct, FIG. 4 is sectional drawing of the discharge port and the suction port which provided the filter, and FIG. 5 is a schematic diagram which shows the power supply part of a heater.

In the present embodiment, the same parts as those in the above-mentioned embodiment will be designated by the same reference numerals and description thereof will be omitted, and different parts will be designated by different reference numerals.

In this embodiment, as shown in FIG. 5, the solar cell S is mainly used as a power source for the heater 3 in the daytime.
And the midnight power E2 is used at night. Solar cell S
The direct-current power generated in 1 is converted into alternating-current power by the inverter I, and is supplied to the heater 3 through the system switching device R. When the output of the solar cell S is insufficient, the daytime electric power E1 is replenished through the system switching device R. Also,
At night, the solar battery S and the daytime electric power E1 are switched to the nighttime electric power E2.

As in the above-described embodiment, the air sucked from the intake port 16 comes into contact with the surface of the heat storage body 2 to be heat-exchanged, and then is guided to the discharge port 17. In the configuration, the intake port 16 and the discharge port 17 are respectively connected to the inlets 7 and the outlets 8 of the underfloor heat storage heating device 1 by the ducts 31, 32.
It is directly connected to each other so that an air passage is formed. The ducts 31 and 32 are made of metal or synthetic resin, and their outer peripheral surfaces are covered with a heat insulating material.

In the case where a plurality of rooms are partitioned in the building or provided on the upper and lower floors, as shown in FIG. 3, the duct 32 is provided with a branch portion 33, and the branch portion 33 is replaced by another branch portion 33. It may be directly connected to the discharge port provided in the room.

Further, in order to maintain the cleanliness of the air, FIG.
As shown in (a), it is preferable to install a filter 171 on the discharge port 17. Alternatively, as shown in FIG. 4B, the filter 161 may be provided at the intake port 16.

According to the present embodiment configured as described above, in addition to the operation of the above-described embodiment, there is the following operation. A solar cell is used as a power source for the heater 3 in the daytime.
Since midnight power can be used at night, running costs for heating can be reduced.

Further, since the intake port 16 and the discharge port 17 are directly connected to the underfloor heat storage / heating apparatus 1 by the ducts 31 and 32, the thermal energy of the underfloor heat storage / heating apparatus 1 is not lost and the building is efficiently constructed. Is discharged inside.

The embodiments of the present invention have been described above with reference to the drawings. However, the present invention is not limited to the above-mentioned embodiments, and even if there is a design change within the scope not changing the gist of the present invention. Included in the present invention.

[0046]

According to the first aspect of the present invention, the building foundation is not heated to a high temperature even when the heater is energized and the heat storage body becomes a high temperature. Therefore, heating and cooling are repeated for a long time. There is no deterioration of the building foundation.

According to the second aspect of the present invention, even if it is installed directly on the bottom of the foundation, there is no deterioration of the bottom of the foundation, and if it is installed under the floor, the heating under the floor can be performed.

According to the third aspect of the present invention, since at least one of a solar cell, a fuel cell, and a wind power generator can be used as a heat source of the heater, heating can be performed without relying on external electric power, and heating can be performed. The running cost can be reduced.

According to a fourth aspect, the first to third aspects are provided.
It has the same effect as that described in any one of 1. Further, since the heat insulation of the building foundation is enhanced, the warm air in the underfloor space heated by the underfloor heat storage heating device is unlikely to escape to the outside.

According to the fifth aspect of the present invention, the warm air in the underfloor space is discharged into the building, and in addition to the floor heating by heat transfer from the underfloor, the inside of the building can be effectively heated by the convection effect of air.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an underfloor structure of a building in which an underfloor heat storage heating device is installed according to an embodiment of the present invention.

FIG. 2 is another embodiment of the present invention and is a cross-sectional view showing an underfloor structure of a building in which an underfloor heat storage heating device is installed.

FIG. 3 is a cross-sectional view showing a modified example of the duct of FIG.

FIG. 4 is a cross-sectional view of a discharge port and a suction port provided with a filter.

FIG. 5 is a schematic diagram showing a power supply unit of a heater.

[Explanation of symbols]

1 Underfloor heat storage heating system 2 heat storage 3 heating heater 4 containers 5 Container lid 6 insulation 7 entrance 8 exit 9 passages 11 basics 12 foundation rising part 13 Foundation bottom 14 floor 15 Underfloor space 16 suction port 17 outlet

Claims (5)

[Claims] 1. An underfloor heat storage and heating device comprising a heat storage body and a heater for heating the heat storage body, the heat storage body being installed and heated in an underfloor space surrounded by a building foundation and a floor of the building. The underfloor heat storage heating device is characterized in that the heat storage body can be installed so as not to come into direct contact with a building foundation. 2. The heat storage body and the heater are contained in a heat insulating container, an air passage having an inlet and an outlet is formed inside the container, and the air passage is passed from the outside of the container to the passage through the inlet. The underfloor heat storage / heating apparatus according to claim 1, wherein the air taken in is in contact with the surface of the heated heat storage body for heat exchange and flows out from the outlet. 3. A solar cell as a heat source of a heater,
The underfloor heat storage heating device according to claim 1 or 2, wherein at least one of a fuel cell and a wind power generator is available. 4. The underfloor heat storage and heating device according to claim 1, wherein the underfloor heat storage and heating device is installed in an underfloor space surrounded by a building foundation and a floor of the building, and the building foundation comprises: It is composed of a foundation rising part surrounding the outer peripheral part and a foundation bottom part formed inside the foundation rising part and covering the lower surface of the building, and the foundation rising part and the foundation bottom part near the foundation rising part are covered with a heat insulating material. The building to be. 5. An intake port for sucking in air inside or outside a building to supply it to the underfloor space and a discharge port for discharging air under the floor into the building, wherein the air taken in through the intake port is a heat storage body. The building according to claim 4, wherein an air passage is formed so as to be guided to the discharge port after heat exchange with the surface.