JP4083137B2 - Underfloor heat storage and heating device, building equipped with the same - Google Patents

Description

  The present invention relates to an underfloor heat storage and heating device and a building including the same.

  In the foundation bottom of a concrete foundation with a foundation upright (foundation beam) and foundation bottom (foundation slab) of a building such as a conventional underfloor thermal storage heating system and a highly airtight, highly insulated wooden house, etc. In addition, a sheet heating element was embedded in the base, and the entire outer periphery of the foundation top and bottom was covered with a heat insulating material. (See Patent Document 1).

  However, in the above-mentioned publication, since the sheet heating element is embedded in the bottom of the foundation of the concrete foundation, the concrete foundation is heated to a high temperature when the sheet heating element is energized, and is cooled when it is not energized. In order to heat the inside of the building to an appropriate temperature, the bottom of the foundation had to be heated.

  As a result, heating and cooling of the concrete foundation are repeated for a long time, which causes a problem of causing cracks in the concrete foundation and promoting deterioration of the concrete foundation.

In view of this, the applicant applies a heat storage body and a heater equipped with a heater for heating the heat storage body in an underfloor space surrounded by the building foundation and the floor of the building so that the heat storage body does not directly contact the building. We proposed an underfloor heat storage and heating system and a building equipped with it, so that the foundation would not deteriorate by installation. (See Patent Document 2).
Japanese Patent Laid-Open No. 2001-20403 JP 2003-279058 A

In the above-described underfloor heat storage heating apparatus and a building equipped with the same, since the heat storage body does not directly contact the building, the problem of causing cracks in the concrete foundation or promoting deterioration of the concrete foundation is solved.
However, in order to heat everything in the building, a large amount of heat must be stored in the heat storage body provided under the floor, and the apparatus becomes large and not necessarily economical.
In particular, when using late-night power as a heat source for a heater that heats a heat storage body, it is difficult to store a large amount of heat during the middle of the night and it is difficult to heat all the buildings.

  An object of this invention is to provide the underfloor heating apparatus which can be heated efficiently, and to provide the building which can heat the inside of a building efficiently using the underfloor heating apparatus.

The underfloor heating apparatus of the present invention includes a heat storage body and a heater for heating the heat storage body, and at least the heat storage body is installed in a floor space surrounded by the building foundation and the floor of the building to heat the floor. In the heat storage heating device, the heat storage body is disposed at least in the under-floor space below the non-residential space in the building, and air heated by the heat storage body is constantly introduced into the non-residential space in the building. The living room space in the building is indirectly heated by the air heated by the heat storage body in the underfloor space through the floor portion.

Here, the heat accumulator and the heater are incorporated in a heat insulating container, and an air passage having an inlet and an outlet is formed inside the container, and is taken into the passage from outside the container through the inlet. the air is heat-exchanged in contact with the heated regenerator surface, to flow out from the outlet, characterized in that it is introduced into the non-room space.

The building of the present invention, the underfloor heat storage heating apparatus, a building that has been installed under the floor space surrounded by the buildings foundation and floor portion of the building, the building foundation, the foundation raised portion surrounding the outer peripheral portion The foundation bottom covering the lower surface of the building formed inside the foundation erection, the foundation erection and the foundation bottom in the vicinity of the foundation erection are covered with a heat insulating material, and the non-residential space of the building is an underfloor space it characterized in that it communicates with.

Here, an intake port that sucks air inside or outside the building and supplies it to the under-floor space, and a discharge port that discharges the air in the under-floor space to the non-residential space are provided. An air passage is formed so as to be guided to the discharge port after heat exchange in contact with the air.

Further, the non-living room space is a non-living space such as a bathroom vanity, a kitchen, and a hallway.

Furthermore, the living room spaces other than the bathroom vanity, kitchen, corridor and the like can be heated by an air conditioner different from the underfloor heat storage and heating device.

In these inventions, as the heat storage body to be used, the inorganic heat storage body is not deteriorated and is good in terms of life. Moreover, there are two types of heat storage bodies: a sensible heat storage body and a latent heat storage body.
A sensible heat storage material is a material with a large heat capacity, which requires a large amount of heat to raise or lower the temperature, but releases a large amount of heat when the temperature drops or rises. It is a material that can store.

  As such a sensible heat storage body, stones, gravel, sand, bricks, concrete blocks, etc. that can withstand high temperatures are suitably used.

In addition, the latent heat storage body causes a phase change in the vicinity of the heating temperature, and absorbs or releases a large amount of heat when the phase change occurs, and can store a very large amount of heat in the vicinity of the phase change. It is a possible material.
This phase change includes a phase change between a gas and a liquid, a phase change between a liquid and a solid, and a phase change between a gas and a solid, but a phase change between a liquid and a solid. Since it is easy to handle if is used, it is often used. The phase change from the solid to the liquid is dissolution, and the solidification temperature at which it solidifies and the melting temperature at which it liquefies are generally the same.

Examples of such latent heat storage materials include calcium chloride hexahydrate, sodium sulfate decahydrate, sodium acetate trihydrate, paraffins, fatty acid esters, fatty acid alcohols, olefin resins, and the like.
Since these latent heat accumulators become liquid above the melting temperature (solidification temperature), it is preferable to use them in a sealed container.

As the heater, a heating wire heater, a planar electric heating element, a CO ₂ heat pump, or the like can be used.
Moreover, in order to heat a thermal storage body efficiently, you may incorporate a heater in a thermal storage body.

Oite above onset bright, to constantly introduced into non room space in a building air heated by the heat storage body, Ru provided moths La Li the floor.

In the underfloor heat storage and heating device of the present invention, the air warmed by the heat storage body can be introduced into a part of the room in the building. It will be mainly heated.
Other rooms in the building can be heated separately, and the equipment does not become large. For example, it is possible to use a low-cost heat source such as midnight power as a heat source for a heater that heats a heat storage body. Is.

Further, the heat storage body and the heater are built in a heat insulating container, and an air passage having an inlet and an outlet is formed inside the container, and is taken into the passage from outside the container through the inlet. air is heat exchanged against the heated regenerator surface, to flow out from the outlet, if as introduced to the non-room space in a building, can be heated constantly non room space in a building it can.
Here, the other rooms in the building can be heated by another air conditioner , and the apparatus does not become large. For example, a low-cost heat source such as midnight power is used as the heat source of the heater that heats the heat storage body. It is possible and economical.

Furthermore, the present invention, since a building underfloor heat storage heating system is installed under the floor space, the same effect as above follow.
Then, foundation bottom of the basic raised portion and underlying raised portion vicinity is covered with a heat insulating material, since non-room space of the building is in communication with an underfloor space, thermal insulation of the building foundation is increased, underfloor heat storage heating It becomes difficult for the heat of the air heat-exchanged by the apparatus to escape to the outside.

In addition, an air intake port that sucks air inside or outside the building and supplies it to the underfloor space, and an air discharge port that discharges the air in the underfloor space to the non-residential space are provided. After the heat exchange in contact, the air passage is formed so that it is led to the discharge port, so warm air in the underfloor space is discharged from the discharge port to the non- occupied room space in the building and efficiently heated. The

Furthermore, the non-residential space where warmed air is always introduced is a non- residential space that is a small space where there is no ordinary person who needs relatively few heating heat sources, such as a bathroom vanity, a kitchen, and a corridor. For example, a low-cost heat source such as midnight power can be used as a heat source of a heater for heating a heat storage body, which is economical.

In addition, the room spaces other than the bathroom vanity, kitchen, corridor, etc. are mainly heated by an air conditioner separate from the underfloor heat storage and heating device, and the combined use of the underfloor heat storage heating device and another air conditioner makes the entire building efficient. Is heated.

  The best mode for carrying out the present invention will be described with reference to the drawings.

FIG. 1 is a partial vertical cross-sectional view showing an example of an underfloor heat storage heating device of the present invention and a building including the same.
In FIG. 1, 1 is a foundation, 2 is a building body, 3 is a heat storage body, 4 is a heating / air-conditioning outdoor unit, 5 is an upright part of a heat insulating material, 6 is a horizontal part of the heat insulating material, 7 is an air conditioner, and 8 is a discharge An exit 9 is a fan.

The foundation 1 is made of concrete with reinforcing bars, and includes a raised portion 11 surrounding an outer peripheral portion and a bottom portion 12 formed continuously inside the raised portion 11.
The inner side of the upright portion 11 and the upper surface of the bottom portion 12 are covered with an upright portion 5 of a heat insulating material and a horizontal laying portion 6 of the heat insulating material, respectively. For the upright portion 5 of the heat insulating material and the horizontal portion 6 of the heat insulating material, plate-like polystyrene foam, glass wool, rock wool or the like is used.

A building body 2 is provided on the foundation 1.
A floor portion 21 of the building body 2 covers an upper portion of the foundation 1 to form an underfloor space A.
A heat storage body 3 selected from stones, gravel, sand, bricks, concrete blocks, and the like is placed on the horizontal laying portion 6 of the heat insulating material in the underfloor space A.
And the air heated by the heater (illustration omitted) provided in the heating air-conditioning outdoor unit 4 is introduce | transduced in the underfloor space A, and the thermal storage body 3 is heat-stored. As a heat source of the heater provided in the heating / air-conditioning outdoor unit 4, the heat storage body 3 is stored at night by using midnight power.

In the building body 2, indoor spaces B and C are formed surrounded by the outer wall 22 and the wall 23.
The indoor space B is a non-room space that is a small space without a normal person such as a bathroom, a kitchen, and a corridor, and the indoor space C is a room space such as a living room and a bedroom.

Non room space on the floor portion 21 of the B are found discharge port 8 is provided, air heated by the regenerator 3 of the floor under the space A is directly indoor space is sent by the fan 9 to the non room space B B is heated .

When the discharge port 8 is always opened in this way, the air in the warm underfloor space A directly enters the small non-indoor space B, so that the non-indoor space B immediately becomes warmer. The warm air that escapes from A is only part of the underfloor space A, and the temperature drop is small .

In addition, the living room space C such as a living room or a bedroom is indirectly heated by the air heated by the heat storage body 3 in the underfloor space A through the floor portion 21, but the air conditioner installed mainly in the room. It is designed to be heated by.

And underfloor heat storage heating apparatus of this embodiment, in the building equipped with the same, air heated by the regenerator 3 is introduced to the non room space B of a portion of the building body 2, the building body 2 The other living room space C was mainly heated separately by the air conditioner 7.
Therefore, the underfloor heat storage and heating device does not become large, and for example, as a heat source for a heater that heats the heat storage body 3, it is possible to use a heating and air conditioning outdoor unit 4 that uses a low-cost heat source such as midnight power, The heating of the main body 2 is economically performed as a whole.

FIG. 2 is a partial longitudinal sectional view showing another embodiment of the underfloor heat storage and heating device of the present invention and another embodiment of a building equipped with the same.
2 that are substantially the same as those shown in FIG. 1 are denoted by the same reference numerals and description thereof is omitted.

  An electric heater 41 that uses midnight power is built in the heat storage body 31 at night, and is housed in a sealed container 10 that can be opened, and a bottom portion 12 of the foundation 1 in the underfloor space A through a heat insulating material 61. It is installed on the top.

  A discharge port 81 and an intake port 82 are provided in the floor portion of the indoor space B of the non-residential space of the building body 2 provided on the foundation 1, and the discharge port 81 and the intake port 82 include the duct 101, 102 is connected to the sealed container.

  An air passage is formed so that air from the air inlet 82 that sucks in air inside or outside the building and supplies it to the underfloor space is brought into contact with the surface of the heat accumulator 31 and is then heat-exchanged and then guided to the outlet 81. ing.

In addition, it is also possible to provide a discharge fan and intake fan.

In the underfloor heat storage and heating apparatus of this embodiment and a building equipped with the same, the air heated by the heat storage body 31 does not have normal people such as some bathrooms, kitchens, and corridors in the building body 2. the non room space B which is a small space, is introduced through the duct 101, the other room space C of the building body 2 was set to be separately heated in the air conditioner 7.
Therefore, the underfloor heat storage and heating device does not become large. For example, it becomes possible to use a low-cost heat source such as midnight power as the heat source of the heater 41 that heats the heat storage body 31, and the heating of the building body 2 as a whole Done economically.
In order to warm the underfloor space A, for example, a sealed container 10 provided with a small hole which opens against the underfloor space AU, naturally in a sealed container 10 inside in the underfloor space A is little by little air heated to a high temperature You may make it flow out.

It is a fragmentary longitudinal cross-sectional view which shows an example of the underfloor heat storage heating apparatus of this invention, and a building provided with the same. It is a fragmentary longitudinal cross-section which shows the other embodiment of the underfloor thermal storage heating apparatus of this invention, and a building provided with the same.

Explanation of symbols

1 Foundation 2 Buildings 3 and 31 Heat storage body 4 Heating air conditioner outdoor unit (heater)
41 Heating heaters 5, 6, 61 Insulating material 8, 81 Discharge port A Underfloor space B Non-residential space C Living room space

Claims (6)

An underfloor heat storage and heating device that includes a heat storage body and a heater that heats the heat storage body, and heats at least by installing the heat storage body in an underfloor space surrounded by a building foundation and a floor of the building,
The heat storage body is disposed in at least the underfloor space below the non-residential space in the building, and the air heated by the heat storage body is constantly introduced into the non-residential space in the building, and the indoor space in the building is An underfloor heat storage and heating apparatus, wherein the underfloor heat storage and heating apparatus is indirectly heated by air heated by the heat storage body in the underfloor space through the floor. The heat storage body and the heater are incorporated in a heat insulating container, and an air passage having an inlet and an outlet is formed inside the container, and the air passage is taken into the passage from outside the container through the inlet. air is heat exchanged against the heated the heat storage surface, wherein the outflow from the outlet, the underfloor heat storage heating apparatus according to claim 1, characterized in that it is introduced into the non-room space. The underfloor heat storage and heating device according to claim 1 or 2 is a building installed in an underfloor space surrounded by a building foundation and a floor of the building, and the building foundation includes a foundation upright surrounding an outer peripheral portion, It consists of a basic bottom covering buildings underside formed inside of the basic raised portion, wherein said base bottom portion of the underlying raised portion and underlying raised portion vicinity is covered with a heat insulating material, a non room space of a building the underfloor building, characterized in that threaded through space and communicating.   An air inlet that sucks air inside or outside the building and supplies it to the underfloor space, and a discharge port that discharges the air in the underfloor space to the non-room space are provided, and the air sucked from the air inlet is a heat storage body The building according to claim 3, wherein an air passage is formed so as to be guided to the discharge port after heat exchange in contact with the surface.   The building according to claim 3, wherein the non-living space is a bathroom, a kitchen, a hallway, or the like.   6. The building according to claim 5, wherein the living room space other than the bathroom vanity, kitchen, corridor and the like can be heated by an air conditioner different from the underfloor heat storage and heating apparatus.

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