JP2014169578A - Underfloor heat storage structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an underfloor heat storage structure capable of being utilized as heat exchange means for air supply and water supply without reference to seasonal factors by arranging a water tank in an underfloor space of a foundation part subjected to heat insulation treatment by a foundation heat insulation method.SOLUTION: In an underfloor heat storage structure, water tanks 10... are arranged in an underfloor space 3 of a foundation part 1 subjected to heat insulation treatment by a foundation heat insulation method. The water tanks 10... separately comprise a water tank 13 for air supply, which makes air supply piping 14 run in water, and a water tank 15 for water supply, which makes water supply piping 16 run in the water.

Description

  The present invention relates to an underfloor heat storage structure in which a water tank is arranged in an underfloor space in a base portion that is heat-insulated by basic heat insulation.

  Conventionally, in a house with a basic heat insulation structure, a construction method has been proposed in which a water tank is arranged in an underfloor space where temperature fluctuations are small and used for heat storage. For example, Patent Document 1 describes a technique in which an aquarium is disposed on soil concrete and the aquarium water is used as a heat storage material.

Japanese Patent Laid-Open No. 10-311103

  However, the heat utilization of aquarium water described in the above-mentioned document is mainly related to heating in the winter season, and is not considered until it is used as heat exchange means for air supply or water supply (hot water supply). Also, the use in summer is not considered.

  The present invention has been proposed in consideration of such circumstances, and its purpose is to arrange a tank in the underfloor space in the foundation part that has been heat-insulated by the foundation heat insulation method, regardless of the season. An object of the present invention is to provide an underfloor heat storage structure that can be used as a heat exchange means for air and water.

  In order to achieve the above object, the underfloor heat storage structure of the present invention is an underfloor heat storage structure in which a water tank is arranged in an underfloor space in a foundation part that has been heat-insulated by a foundation heat insulating method. It is characterized by being configured to be separated from a water tank for water supply through an air pipe and a water tank for water supply through a water supply pipe in water.

  Moreover, in this invention, it is good also as what was distribute | arranged to the center part in planar view in the said water tank for water supply at least the exit side vicinity part of water supply piping.

  Furthermore, in this invention, it is good also as a structure where water supply piping is distribute | arranged spirally by planar view in the water tank for water supply, and water flows into the center part from the outer peripheral part of the spiral piping.

  Furthermore, in the present invention, the air supply pipe may be arranged on the inner bottom side of the water supply tank.

  According to the underfloor heat storage structure of the present invention, the water tank disposed in the underfloor space can be used as heat exchange means for supplying and supplying water regardless of the season because of the above-described configuration.

It is a model longitudinal cross-sectional view of the underfloor heat storage structure which concerns on one Embodiment of this invention. (A) is a schematic cross-sectional view of the underfloor space in which the water tank is arranged, and (b) is a schematic vertical cross-sectional view corresponding to the line AA in (a), with piping in the water tank not shown. It is a schematic explanatory drawing which shows the arrangement | positioning aspect of the air supply piping in the water tank for supply, (a) is a schematic longitudinal cross-sectional view, (b), (c) is a schematic cross-sectional view which showed two types of aspects. is there. It is a schematic explanatory drawing which shows the arrangement | positioning aspect of the water supply piping in the water tank for water supply, (a) is a schematic cross-sectional view, (b) is a schematic longitudinal cross-sectional view, (c) is a schematic longitudinal cross-section which showed the other aspect. FIG.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  The wooden house shown in FIG. 1 has a foundation 1 that forms the lower structure of the house. A plurality of water tanks 10 and 10 are arranged in the underfloor space 3 in the foundation 1, and an underfloor heat storage structure is formed by them.

  The foundation portion 1 is configured to include a reinforced concrete foundation composed of a floor bottom portion 1a and a rising portion 1b. The base part 1 is heat-insulated by a basic heat insulation method. That is, the basic heat insulating material 2 is constructed on the outer surface of the rising portion 1b. A finishing material (not shown) is affixed to the outer surface of the applied foundation heat insulating material 2. In addition, as a basic heat insulation construction method, the method of constructing the basic heat insulating material 2 on the inner surface of the rising portion 1b may be employed, or the method of constructing the basic heat insulating material 2 on the inner and outer surfaces of the bottom floor bottom portion 1a may be employed. Good. Furthermore, you may employ | adopt the construction method which combined those construction methods variously.

  Further, in this embodiment, a so-called solid foundation in which the entire bottom surface is made of reinforced concrete is adopted as the underfloor bottom portion 1a, but a fabric foundation that does not use reinforced concrete may be adopted as the underfloor bottom portion 1a.

  The water tanks 10 and 10 arranged in the underfloor space 3 are a water supply tank 13 (left side in FIG. 1) that passes the water supply pipe 14 in water and a water supply tank 15 (the right side that passes through the water supply pipe 16 in water). ) And more separated configuration. As shown in FIG. 2 (a), a total of four water tanks 10,..., Three air supply tanks 13, 13, 13 and one water supply tank 15, are installed in the underfloor space 3 of this house. Has been.

  The air supply pipe 14 communicates with the living room space 5 through the air supply water tank 13 from the outside of the rising portion 1 b of the base portion 1. On the other hand, the water supply pipe 16 communicates from the outside of the rising portion 1 b of the base portion 1 to the water heater 18 installed outside via the water supply water tank 15. Outside air is taken into the air supply pipe 14 and sent to the living room space 5. Further, clean water is fed into the water supply pipe 16 and sent to the water heater 18.

  Each of the water tanks 10 has a rectangular shape in plan view, and the height dimension makes full use of the depth of the underfloor space 3. In addition, although the planar view shape of the water tank 10 is desirably a rectangular shape in consideration of the planar view shape of the house, other shapes such as a circle may be used. In consideration of making the temperature distribution of the water in the outer peripheral portion in the water tank 10 uniform, it is desirable to use a circular water tank.

  Each water tank 10 is filled with water 11 inside. For example, rainwater may be stored in a separate tank (not shown) and supplied to the aquarium 10,... Or water may be supplied directly to the aquarium 10. May be. If rainwater is used, the supply cost of the aquarium water 11 can be reduced.

  Within each of the water tanks 10,..., The temperature distribution differs in summer (warm season) or winter (cold season).

  That is, in the summer, the temperature on the floor (the living room space 5) is higher than the temperature in the ground where the temperature fluctuation is small, so that the upper water temperature is higher in the water tank 10, and the lower the water temperature is. In the horizontal (horizontal) direction, the water temperature may be higher on the side portion due to the influence of outside air, but there is no difference in temperature as in the vertical direction because the base portion 1 is insulated.

  On the other hand, since the temperature of the living room space 5 is lower than the temperature in the ground in the winter, the water temperature in the lower part of the aquarium 10 is high, but the water having the high water temperature moves upward, so that the water temperature shown in FIG. Convection occurs in the water tank 10 as indicated by the dashed arrows. In winter, the wall portion 10b of the aquarium 10 lowers the water temperature on the side of the wall portion 10b in the aquarium 10, so that the circulation of the aquarium water 11 collects relatively warm water in the central portion 10c in plan view (FIG. 2). (Refer to (a) and (b)). In addition, since the water temperature on the rising portion 1a side of the base portion 1 that is easily affected by outside air may be lowered in winter, the position where the warm water gathers (center portion 10c) is slightly in the center of the underfloor space 3 in plan view. It may shift to the side.

  In the present embodiment, each of the water tank 13 and the water tank 15 will be described next so that heat can be efficiently exchanged according to the temperature distribution in the water whose temperature distribution varies depending on the season. The piping method like this was adopted.

  In the water supply tank 13, as shown in FIG. 3A, the air supply pipe 14 is arranged on the inner bottom portion 10a side. This is because it is an arrangement that mainly assumes the summer season when cold air supply to the living room space 5 is required, and it is assumed that the piping is cooled on the inner bottom portion 10a side where the water temperature is low.

  In order to efficiently cool the water in the pipe, it is desirable to make the pipe length longer and to make most of the air supply pipe 14 on the inner bottom 10a side by making full use of the area of the bottom area. . For example, it may be arranged in a meandering shape as shown in FIG. 3B or in a spiral shape as shown in FIG.

  Thus, air can be efficiently cooled by lengthening the supply piping 14 arranged on the inner bottom 10a side.

  In the winter season, warm air cannot be supplied with the arrangement of the air supply pipe 14 as described above. In the first place, heat exchange with the aquarium water 11 is not sufficient for heating. Therefore, even when winter is assumed, the air supply pipe 14 is arranged in the lower part as described above, and the supplied air is used for ventilation in the living room. You can use as. For example, if the air supply pipe 14 is arranged in a spiral shape as shown in FIG. 3 (c) so that the air flows from the outer peripheral side to the center side of the pipe, the slightly heated air is kept in the room even in winter. It can be supplied to the space 5.

  On the other hand, in the water supply tank 15, as shown in FIG. 4A, at least the outlet side vicinity portion 16a of the water supply pipe 16 is arranged in the central portion 10c in plan view. In this embodiment, as shown to Fig.4 (a), the center part of the water supply piping 16 distribute | arranged spirally is distribute | arranged to the center part 10c in planar view. This is because it is assumed that even a little warmed water is supplied. Especially in the winter or at night, the water heated in the water supply tank 15 is supplied to the water heater 18, and the water heater 18 This is to suppress the heating load.

  For example, as shown to Fig.4 (a), if the water supply piping 16 is distribute | arranged spirally, the exit vicinity part 16a can be distribute | arranged to the center part in planar view. Further, as shown in FIG. 4B, if the water supply pipe 16 spreads from the upper part to the lower part and is arranged in a spiral shape that is a kind of spiral, the water supply pipe 16 is stably provided in the water tank. It can be arranged. Further, as shown in FIG. 4C, the water supply pipe 16 may be formed in a spiral shape (coil spring shape), and most of the water supply pipe 16 may be disposed only in the central portion 10c having a high water temperature.

  In order to carry out efficient heat exchange, it is desirable to accurately determine the position (central portion 10c) where the outlet side vicinity portion 16a of the water supply pipe 16 is disposed by measuring the water temperature.

  As described above, by arranging the water supply tank 13 and the water supply water tank 15 in the underfloor space 3, the water tank 10,... Is utilized as a heat exchange means for air supply and water supply regardless of the season. As a result, the heating / cooling load can be reduced. In particular, the use of the water supply tank 13 can reduce the load on the air conditioning equipment, and the use of the water supply tank 15 can reduce the load on the water heater 18. Of course, the heat storage effect by the aquarium water 11 can also be expected regardless of the season, and the comfort in the living room space 5 can be improved. In particular, since the foundation part 1 is thermally insulated by the foundation insulation method, the effect is great.

DESCRIPTION OF SYMBOLS 10 Water tank 10a Inner bottom part 10b Wall part 10c Center part 11 Water tank water 13 Water supply tank 14 Air supply pipe 15 Water supply water tank 16 Water supply pipe 16a Outlet vicinity part 18 Water heater 1 Base part 1a Under floor part 1b Rising part 2 Basic heat insulating material 3 Underfloor space 5 Living room space

Claims (4)

An underfloor heat storage structure in which a water tank is arranged in the underfloor space in the foundation part heat-insulated by the basic heat insulation method,
An underfloor heat storage structure characterized in that the water tank is configured to be separated from a water tank for supplying water through a water supply pipe and a water tank for supplying water through a water supply pipe. In claim 1,
An underfloor heat storage structure characterized in that at least the vicinity of the outlet side of the water supply pipe is arranged at the center of the plane in the water tank. In claim 2,
The underfloor heat storage structure, wherein the water supply pipe is arranged in a spiral shape in a plan view in the water tank for water supply, and water flows from an outer peripheral portion to a central portion of the spiral pipe. In any one of Claims 1-3,
An underfloor heat storage structure in which the air supply pipe is arranged on the inner bottom side of the water tank for supply.

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