JP6030984B2 - Tatami mat - Google Patents

Description

  The present invention relates to a tatami mat excellent in contact thermal sensation so that the surface temperature can be kept low in summer and the surface temperature can be kept high in winter.

  In recent years, building materials having a heat storage effect by a latent heat storage material have attracted attention in terms of being excellent in energy saving.

  The latent heat storage material is a heat storage material that uses the latent heat exchanged with the outside during its solidification and melting as thermal energy, and has an appropriate melting point, freezing point, heat of fusion, heat of solidification, heat capacity, etc. as this heat storage material. It is said that the building material can be given a constant temperature function for keeping the room temperature at a constant temperature by containing the substance in the building material.

  Conventionally, as a building material using such a latent heat storage material, for example, as shown in Patent Document 1, an interior material that is used for a floor board, a ceiling board, a wall board, etc. of a building and contains the latent heat storage material is known. It has been. The interior material includes a latent heat storage material having a melting point suitable for the summer on one side of the plate material serving as a core material, and a latent heat storage material having a melting point suitable for the winter on the other side. ing. And by installing this interior material so that the appropriate side faces the room according to the season, the room is overheated in the summer and the room is overcooled in the winter. One of the cold and warm functions can be selected and used.

  On the other hand, Patent Document 2 proposes a tatami mat to which a heat storage unit having a heat storage material is attached. According to the technique of Patent Document 2, the surface temperature of the tatami mat can be kept high by the heat retaining function of the heat storage material, and a comfortable contact temperature feeling can be given to the user.

  In addition, the tatami mat is a relatively lightweight flooring material that can be easily removed and carried. Therefore, it can be efficiently stored by bringing it into a sunny room or a heating space.

JP 2007-63829 A JP 2005-308268 A

  However, when the latent heat storage material is included in the interior material as in Patent Document 1, the interior material is fixed as a floor board, a ceiling board, a wall board, etc. of the building. It is not easy to efficiently store and cool heat.

  For the same reason, it is not easy to reverse the front and back according to the room temperature of the day, for example, at the turn of the season when the temperature varies greatly.

  Furthermore, according to this Patent Document 1, for example, when the latent heat storage material facing the room generates heat, a part of the generated heat is diffused to the outdoor side through the core material. The same applies to the case where heat is stored, and the heat applied to the side facing the room may be diffused to the outside of the room.

  On the other hand, when the heat storage unit is attached to the tatami mat as in Patent Document 2, since the heat storage unit according to the use season is selected, there is a problem that the effect can be expected only in a specific season. Arise.

  The present invention has been made in view of such points, and an object of the present invention is to provide a heat retaining function that can provide a user with a comfortable contact thermal sensation by improving the structure of the tatami mat. The purpose of the present invention is to provide a cooling function and a structure that allows each function to be used easily and still effectively exhibit the effect of each function.

  In order to achieve the above object, according to the present invention, a latent heat storage body and a tatami table are sequentially stacked on both sides of a heat insulating core material, and the latent heat storage bodies have different melting points. The material was used.

Specifically, in the invention of claim 1,
It is a tatami mat that can be used on both sides of the floor of the building so that it can be removed.
A heat-insulating core material;
A first latent heat storage body and a tatami mat, which are sequentially laminated on one side of the core material;
A second latent heat storage body and a tatami surface laminated in order on the other surface side of the core material,
The melting point of the latent heat storage material used for the first latent heat storage material is different from the melting point of the latent heat storage material used for the second latent heat storage material.

  In the first aspect of the present invention, the melting points of the latent heat storage materials of the first and second latent heat storage bodies stacked on the one surface side and the other surface side of the core material constituting the tatami mat are different from each other. As the latent heat storage material, a latent heat storage material adjusted so as to be suitable for different seasons can be arranged. In addition, because both sides of the tatami mat are equipped with tatami mats, both front and back sides can be used, and the latent heat storage material can be properly used by simply inverting the front and back of the tatami mats according to the season. it can. And since the surface temperature of the tatami surface can be maintained by utilizing the heat generated by solidification of the latent heat storage material located on the side facing the room or the heat absorption by melting, it is possible to give a comfortable thermal feeling to the user. it can.

  For example, the first latent heat storage body on one side of the core material of the tatami mat is provided with a latent heat storage material having a melting point suitable for summer, and the second latent heat storage body on the other side is winter. In order to use this tatami mat in winter, the second latent heat storage body on the other side may be installed so as to face the room. In this case, when performing heat storage, indoor heating by an air conditioner or the like may be used, or sunlight during the day may be used. When using the latter, you can remove this tatami and bring it into a sunny room. By maintaining the temperature of the tatami surface facing the room by the heat generated from the stored latent heat storage material, it is possible to give a comfortable contact temperature feeling to the user.

  In addition, the use of a heat-insulating core material can prevent the movement of heat that goes back and forth between one side of the tatami mat and the other side, so during heat storage, cold storage, heat generation, heat absorption, etc. Energy waste can be reduced, and the performance of the latent heat storage material can be efficiently and sufficiently exhibited.

The invention of claim 2
In the tatami mat according to claim 1,
The melting point and freezing point of the latent heat storage material of the first latent heat storage body are 23 ° C to 32 ° C,
The melting point and freezing point of the latent heat storage material of the second latent heat storage body are 15 ° C. to 25 ° C.

  In the invention of claim 2, the melting point and freezing point of the latent heat storage material of the first latent heat storage body are set to a temperature desired for summer room temperature, and the melting point and freezing point of the latent heat storage material of the second latent heat storage body are set to room temperature in winter. The temperature is at a desirable level. The constant temperature function of the tatami mat according to the present invention is effective when the internal temperature of the first and second latent heat storage materials reaches the melting point or the freezing point. The melting point and freezing point of the latent heat storage material of the first and second latent heat storage bodies in consideration of the average room temperature in the summer and winter seasons of the area in which the room is installed because it changes so as to approach the room temperature of the installed room. By selecting from the above range, each latent heat storage material can be made suitable for summer and winter.

The invention of claim 3
In the tatami mat according to claim 1 or 2,
An anti-slip material is applied to the surface of the tatami surface.

  In the invention of claim 3, since the anti-slip material is applied to the surface of the tatami surface located on the one surface side and the other surface side, when the tatami is placed on the floor surface, Of the two tatami mats, whichever tatami mat is in contact with the floor, the tatami mat is difficult to slide and is positioned on the floor. Therefore, this tatami mat can be used without any problem as being usable on both sides.

The invention of claim 4
In the tatami mat according to any one of claims 1 to 3,
It is characterized in that at least one of the material, color or weave of the first and second tatami mats is different from each other.

  In the invention of claim 4, for example, a cool color can be given to the user by setting the color of the tatami mat on the side used in summer to a cold color system. Alternatively, it is possible to give a refreshing touch to the user by roughening the stitches of the tatami surface to improve the air permeability. In this way, by appropriately selecting the material, color or weaving method of the tatami mat, it is possible to make the tatami mat more suitable for summer and winter.

  In this invention, the latent heat storage materials having different melting points, which are adjusted to suit different seasons, are arranged on one side and the other side of the tatami mat that can be used on both sides, with the core material having heat insulation interposed therebetween. By inverting the front and back of the tatami mat according to the season, two types of latent heat storage materials can be used properly, and the performance of each latent heat storage material is effectively demonstrated by reducing waste of heat energy. can do.

FIG. 1 is a cross-sectional view showing a structure of a tatami mat according to an embodiment of the present invention. FIG. 2 is a view corresponding to FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following description of preferred embodiments is merely exemplary in nature and is in no way intended to limit the invention, its application, or its application.

  FIG. 1 shows a tatami mat A according to an embodiment of the present invention. This tatami mat A is, for example, a tatami mat that is arranged and used so as to spread one or more on a floor surface F (see FIG. 2) such as flooring, and is thin and light, and can be used by human hands. The weight and size are easy to carry. In particular, the tatami mat A according to the present embodiment is a tatami mat that can be used on both sides, as shown in FIG. 2, and is installed and used so that either surface is in contact with the floor surface F.

  As shown in FIG. 1, the placing tatami A includes a tatami floor core 1 (core) at the center in the thickness direction. As this core material 1 for tatami floors, the core material used for normal tatami mats, such as an insulation board and foamed resin, is used, for example, in the shape of a rectangular thin plate. This core material 1 is required to be a core material having appropriate rigidity and elasticity and excellent in heat insulating performance that prevents heat transfer between the tatami mat A front and back sides.

  A first latent heat storage body 3A is disposed on one side of the tatami floor core 1 (upper side in FIG. 1) and integrally laminated. A first tatami table 4A is integrally laminated on the upper side of the first latent heat storage body 3A (on the side opposite to the core material 1 for tatami flooring). The tatami floor core 1 to the entire first latent heat storage body 3A are covered and fixed to the tatami floor core 1 by sewing or the like.

  On the other hand, the second latent heat storage body 3B is integrally laminated on the other surface side (the lower side in FIG. 1) of the tatami floor core 1 in the same manner as the one surface side. A second tatami table 4B is integrally laminated on the upper side of the second latent heat storage body 3B (again, opposite to the core material 1 for the tatami floor). The entire tatami floor core 1 or the second latent heat storage body 3B is covered so as to reach the side surface, and is fixed to the tatami floor core 1 by sewing or the like.

  Each of the first and second latent heat storage bodies 3A and 3B is a thin plate-like flexible enclosure that has a size that can be stacked on one side and the other side of the core material 1 for the tatami floor. It has a bag-like container (not shown), and this container is made of a heat transfer material such as aluminum. A first latent heat storage material (not shown) is enclosed inside the container of the first latent heat storage body 3A, and a second latent heat storage material (not shown) is enclosed inside the container of the second latent heat storage body 3B. Is enclosed. In addition to the aluminum, for example, polyethylene, polyolefin, PET, ABS or the like can be used as the material of the first and second latent heat storage bodies 3A and 3B. It is necessary to use a latent heat storage material that does not dissolve or swell (paraffin as the latent heat storage material swells olefin or the like).

  Also, a bag-like container made of a film having barrier properties against the first and second latent heat storage materials, such as a composite of PET and polyethylene deposited with aluminum or a film containing aluminum foil as a constituent material, can be used. .

  The melting point of the latent heat storage material (hereinafter referred to as the first latent heat storage material) sealed in the container of the first latent heat storage body 3A is sealed in the container of the second latent heat storage body 3B. The melting point of the first latent heat storage material (hereinafter referred to as the second latent heat storage material) is different from that of the first latent heat storage material, and the melting point and freezing point of the first latent heat storage material are 23 ° C to 32 ° C. The freezing point is 15 ° C. to 25 ° C. The melting point and freezing point of the first latent heat storage material and the melting point and freezing point of the second latent heat storage material may be other than the above.

  As said 1st latent heat storage material, the normal paraffin whose main raw material is saturated hydrocarbons, such as n-octadecane and n-hexadecane, for example is used. This normal paraffin is a heat storage material that can be used repeatedly, and the melting point and freezing point can be selected from a low to medium temperature range by adjusting its components. When this normal paraffin is used for cooling, it is desirable to adjust the melting point to be suitable for summer. In the present embodiment, normal paraffin adjusted to have a melting point and freezing point of 23 ° C. to 32 ° C. under normal pressure is enclosed in the first latent heat storage body 3A as the first latent heat storage material. Basically, the first latent heat storage material repeats solidification and melting at a boundary between 23 ° C. and 32 ° C. as the internal temperature changes. When solidified due to a decrease in internal temperature, heat is released to the outside as solidification heat, and when melted due to an increase in internal temperature, heat is absorbed from the outside as melting heat.

  Further, as the second latent heat storage material, for example, normal paraffin is used in the same manner as the first latent heat storage material. When this normal paraffin is used for heat insulation, it is desirable to adjust so as to have a melting point and a freezing point suitable for winter. In this embodiment, normal paraffin adjusted to have a melting point and freezing point of 15 ° C. to 25 ° C. under normal pressure is enclosed in the second latent heat storage body 3B as the second latent heat storage material. Basically, the second latent heat storage material repeats solidification and melting at 15 to 25 ° C. as the internal temperature changes. Similarly to the first latent heat storage material, when solidified due to a decrease in internal temperature, heat is released to the outside as solidification heat, and when melted due to an increase in internal temperature, heat is absorbed from the outside as melting heat.

  As the first and second latent heat storage materials other than normal paraffin, inorganic hydrate salts (calcium chloride hexahydrate, sodium sulfate decahydrate, etc.), fatty acids (palmitic acid, myristic acid, etc.), aromatic Use various hydrocarbon compounds (benzene, p-xylene, etc.), ester compounds (isopropyl palmitate, butyl stearate, etc.), alcohols (stearyl alcohol, etc.), polyalkylene glycols, etc., both organic and inorganic can do.

  Furthermore, although not shown in the drawing, a known anti-slip material is applied to each of the first and second tatami mats 4A and 4B on the surface that comes into contact with the floor surface F.

  Further, at least one of the material, color or weaving method of the first and second tatami mats 4A and 4B may be different from each other. As the first tatami table 4A, for example, a turquoise tatami table in which weeds are roughly knitted with hemp yarn or cotton yarn is used, and as the second tatami table 4B, for example, Japanese paper cut into a strip shape is twisted. A flax-colored tatami table is used which is a finely knitted fabric. Even if it is other than these, as the 1st and 2nd tatami mats 4A and 4B, the tatami mats which consist of various materials, colors, or weaves can be used suitably.

  When the tatami mat A according to the present embodiment is used at a time when the outside air temperature is high and the room temperature is likely to rise as in summer, the tatami mat A is used as an indoor floor surface F as shown in FIG. On the top, the first latent heat storage body 3A side located on one surface side of the core material 1 for the tatami floor is on the upper side so that the first tatami surface 4A faces the room and the second tatami surface 4B contacts the floor surface F. Use in place.

  In this case, for example, when the room is cooled by an air conditioner, the tatami mat A is cooled by the temperature of the room, and the upper side surface (the surface on the indoor side) is cooled, and the inside of the first latent heat storage body 3A located on the upper side thereof The first latent heat storage material is also cooled and solidified. Thereafter, when the cooling operation is finished and the internal temperature of the first latent heat storage material starts to rise to approach the room temperature as the room temperature rises, the first latent heat storage material is reached when the internal temperature rises to the melting point. As the melting starts, the indoor heat is absorbed by the first latent heat storage material. Since the temperature of the first latent heat storage material is kept constant as long as melting continues, the surface of the first tatami surface 4A on the surface of the tatami mat A is placed through the first latent heat storage body 3A in which the latent heat storage material is enclosed. The temperature is kept low. As a result, even after the operation of the air conditioner is stopped, a comfortable cooling feeling can be given to the user.

  Moreover, since the tatami mat A is thin and light and can be easily carried by human hands, in addition to the method of cooling with the air conditioner as described above, the tatami mat A placed on the floor F can be removed. Alternatively, the first latent heat storage material may be cooled by being brought into a living room having a room temperature lower than the freezing point of the first latent heat storage material. As such a room, for example, a relatively cool space in a building such as a north side room can be considered. In this case, the tatami mat A brought into the north side room is installed so that the surface to be cooled faces the room and is cooled at room temperature, and accordingly, the first latent heat storage material located on the room side Is also cooled and solidifies. When such a cooling operation is completed, the tatami mat A is removed again, and then carried into another room having a room temperature higher than the melting point of the first latent heat storage material. The internal temperature of the material begins to rise so as to approach the room temperature of the room, and melting starts when the internal temperature rises to the melting point. With the melting, the room heat is absorbed by the first latent heat storage material and the temperature of the first latent heat storage material is kept constant as long as the melting continues. Therefore, the room heat is placed through the first latent heat storage body 3A. The surface temperature of the first surface 4A on the A surface is kept low. As a result, a cooling effect can be exhibited without using cooling by an air conditioner, and a comfortable cooling feeling can be given to the user.

  On the other hand, when it is used at a time when the outside air temperature is low and the room temperature is likely to drop as in winter, as shown in FIG. 2B, the tatami mat A is reversed from the state of FIG. The second tatami table 4B is used so that the side of the second tatami table 4B faces the room and the first tatami table 4A is in contact with the floor surface F.

  At this time, for example, when the room is heated by a heating device such as an air conditioner, the upper surface of the tatami mat A (the surface on the indoor side) is heated by the temperature of the room, and the second latent heat positioned on the upper side thereof. The second latent heat storage material in the heat storage body 3B is also heated to be in a molten state. After that, when the operation of the heating apparatus is finished and the internal temperature of the first latent heat storage material starts to decrease so as to approach the room temperature as the room temperature decreases, the second latent heat is reached when the internal temperature decreases to the freezing point. The heat storage material begins to solidify and generates heat, and the generated heat is released into the room. Since the temperature of the second latent heat storage material is kept constant as long as solidification continues, the surface of the second tatami mat 4B on the surface of the tatami mat A is placed through the second latent heat storage body 3B in which the latent heat storage material is enclosed. The temperature is kept high. As a result, it is possible to give a comfortable feeling of contact temperature to the user even after the operation of the heating device is stopped.

  In addition to the method of heating by indoor heating as described above, the placing tatami A placed on the floor surface F is removed and carried to a living room having a room temperature higher than the melting point of the second latent heat storage material. A method of heating is also conceivable. As such a room, for example, a sunny and relatively warm space such as the south side room can be considered. In this case, the tatami mat A carried into the south side room is installed such that the surface to be heated faces the room, and is heated by room temperature or sunlight. When heating using sunlight, it is preferable to install the tatami mat A so that the surface to be heated is exposed to direct sunlight. The room-side surface of the tatami mat A is heated by room temperature or sunlight, and accordingly, the second latent heat storage material located on the room side is also heated and melted. After completion of such heating operation, the tatami mat A is removed again, and it is carried and installed in another room having a room temperature lower than the freezing point of the second latent heat storage material. The internal temperature of the second latent heat storage material Begins to descend so that it approaches the room temperature of the room, and begins to solidify when its internal temperature falls to the freezing point. The second latent heat storage material releases heat with the solidification, and the internal temperature of the second latent heat storage material is kept constant as long as the solidification continues. Therefore, the second tatami surface is provided via the second latent heat storage body 3B. The surface temperature of 4B is kept high. As a result, it is possible to exert a heat retaining effect without using heating by a heating device and to give a comfortable touch temperature feeling to the user.

  Moreover, since the said 1st and 2nd latent heat storage body 3A, 3B is arrange | positioned on the both sides on both sides of the core material 1 for tatami floors which has heat insulation performance, for example, as above-mentioned When the tatami mat A is installed on the floor surface F so that the side having the second latent heat storage body 3B faces the room, the floor surface F is brought into contact with the floor F from the side facing the room by the heat insulating performance of the core material 1 for the tatami floor. The movement of heat to the side can be suppressed. Therefore, a situation where the heat given to the second latent heat storage material by the heat storage and the heat generated from the second latent heat storage material are conducted to the first latent heat storage body 3A side is conducted. This can be prevented by the heat insulating action of the material 1. The same applies to the first latent heat storage body 3A, and cold heat given to the first latent heat storage material by cold storage and cold heat generated from the first latent heat storage material are conducted to the second latent heat storage body 3B side. Can be prevented by the heat insulating action of the core material 1 for tatami floors. Thus, by using the core material 1 for tatami floors having heat insulation performance, it is possible to effectively exhibit the cold storage and heat storage functions and the cold storage and heat storage functions of the tatami mat A according to the present embodiment.

  Further, each of the first and second tatami mats 4A and 4B in the tatami mat A is provided with a non-slip coating on the surface that comes into contact with the floor surface F. Therefore, when placing the tatami mat A on the floor F, the tatami mat A is less slippery regardless of which of the first and second tatami mats 4A, 4B is in contact with the floor F. Positioned on the floor F. Therefore, this tatami mat A can be used without any problem as being usable on both sides.

  In addition, as the first tatami mat 4A in the tatami mat A, a blue-green tatami mat woven roughly of grass is used. Therefore, in the summer, as shown in FIG. 2 (a), when the tatami mat A is used with the first tatami mat surface 4A facing the room, a visual cool sensation due to a cool color shade is used. In addition, the rough knitting can reduce the contact area and give the user a refreshing contact feeling excellent in air permeability.

  On the other hand, a flax-colored tatami mat made by finely knitting Japanese paper is used as the second tatami mat 4B. Therefore, in the summer, when the tatami mat A is used with the second tatami mat table 4B in contact with the floor surface F as shown in FIG. Mold growth on the contact surface between 4B and the floor surface F can be suppressed.

  Further, in the winter season, when the tatami mat A is used with the second tatami mat surface 4B facing the room as shown in FIG. 2B, the visual warmth derived from the warm color shades. In addition to providing the user with heat, it is possible to improve heat retention because it is sufficiently knitted to be in contact with the sole of the user. Furthermore, if a black tatami mat is used, heat absorption and heat dissipation can be improved. Moreover, since Japanese paper is a material that is resistant to ultraviolet rays, it is possible to prevent fading due to sunburn of the tatami mat that may occur when heat is stored using sunlight during the day.

  Further, by changing the colors of the first and second tatami mats 4A and 4B to each other, it is possible to easily determine which side of the tatami mat A is suitable for summer or winter.

<Other embodiments>
In the above embodiment, a thin bag-like container is used as the first and second latent heat storage bodies 3A and 3B. What is enclosed and dispersed in resin or the like may be used as the latent heat storage body.

  Further, the first and second latent heat storage bodies 3A and 3B using the latent heat storage material can be arranged in a laminated state between the tatami floor core material 1 and the first and second tatami mat surfaces 4A and 4B. For example, the shape and arrangement method of the latent heat storage bodies 3A and 3B and the method of enclosing or containing the latent heat storage material can be applied without limitation.

  Moreover, in the said embodiment, although the anti-slip | skid material is apply | coated to the surface of tatami surface 4A, 4B, application | coating of this anti-slip | skid material is not essential. However, in consideration of a mode in which the tatami mat A is placed on the floor surface F, it is preferable to apply an anti-slip material.

A Place Tatami 1 Core material for tatami floor (core material)
3A 1st latent heat storage body 3B 2nd latent heat storage body 4A 1st tatami surface 4B 2nd tatami surface F Floor

Claims (4)

It is a tatami mat that can be used on both sides of the floor of the building so that it can be removed.
A heat-insulating core material;
A first latent heat storage body and a tatami mat, which are sequentially laminated on one side of the core material;
A second latent heat storage body and a tatami surface laminated in order on the other surface side of the core material,
A tatami mat, wherein a melting point of a latent heat storage material used for the first latent heat storage material is different from a melting point of a latent heat storage material used for the second latent heat storage material. In the tatami mat according to claim 1,
The melting point and freezing point of the latent heat storage material of the first latent heat storage body are 23 ° C to 32 ° C,
A placing tatami mat, wherein the latent heat storage material of the second latent heat storage body has a melting point and a freezing point of 15 ° C to 25 ° C. In the tatami mat according to claim 1 or 2,
A tatami mat having a non-slip material applied to the surface of the tatami surface. In the tatami mat according to any one of claims 1 to 3,
A tatami mat characterized in that at least one of the material, color or weave of the first and second tatami mats is different from each other.

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