JP2001164669A - Heat storage board and building using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat storage member capable of retaining cooling and heating effects in a house for a long time and keeping an indoor temperature at a substantially fixed temperature for many hours even after the operation of an air conditioner is stopped and a building capable of keeping the cooling and heating effects for a long time. SOLUTION: A liquid 5 having specific heat of 0.8 cal/g deg.C is sealed into an inner space 16 of a plastic corrugated board composed of two plastic plates 11, 12 arranged in parallel and many ribs 14 which connect both of them end run in parallel therebetween to form a heat storage board. The liquid may be sealed into either of inner spaces of two layer plastic corrugated board composed of three plastic plates arranged in parallel and many ribs which connect three of them and run in parallel among them, and the other inner space may be left as a cavity to make it operate as a thermal insulation member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat storage board useful for the purpose of maintaining the effect of cooling and heating a building, especially a house.

[0002]

2. Description of the Related Art Glass wool, rock wool, foamed plastic, plastic foam sheets, plastic cardboard, and the like are embedded in walls and ceilings as heat insulating materials for shielding the interior of buildings, especially houses, from the cold and warmth of the outside air. It is used. These insulation materials are effective in keeping the cooling and heating effect high, but after stopping the operation of the cooling and heating equipment, the temperature between the room and the outside air is increased at the speed determined by the insulation effect of the heat insulation material. The difference shrinks.

[0003] If the room temperature gradually rises or falls even after the cooling / heating is stopped, for example, even if the switch is turned off at bedtime, a rapid temperature change does not occur immediately, so that the time is sent relatively comfortably. be able to. In the past, a timer was set so that the switch would be turned off after a predetermined period of time after going to bed.However, after the switch was turned off, the temperature would rise and fall relatively quickly, so it would not be possible to maintain a comfortable state. could not.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to maintain the cooling and heating effect of a building, especially a house, for a long time, and to keep the indoor temperature substantially constant for a long time even after the operation of the cooling and heating device is stopped. It is to provide a heat storage material that makes it possible. The use of such a heat storage material to realize a building having a long cooling / heating effect is also included in the object of the present invention.

[0005]

The basic aspect of the heat storage material of the present invention which achieves the above object is as shown in FIG.
Two parallel plastic plates (11, 12)
And a specific heat of 0.8 cal / g · ° C. in the internal space (16) of the plastic cardboard (1) consisting of a number of ribs (14) running parallel to each other between them.
A heat storage board in which the liquid (5) described above is sealed.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One modification of the heat storage board according to the present invention has a structure shown in FIG. 2 and includes three parallel plastic plates (21, 22, 23) and a space between them. The liquid (5) is sealed on one side (26) of the inner space of a two-layer plastic cardboard (2) composed of a number of ribs (24) running in parallel while connecting the three members. It is a heat storage board. The other side of the internal space (2
7) remains hollow and acts as a thermal insulator. Therefore, if the heat storage board of this embodiment is used, in some cases, it is not necessary to use another heat insulating material.

Another modification of the heat storage board of the present invention has a structure shown in FIG. 3, and has two parallel plastic plates (31, 32) and a connection between them. Of the plastic corrugated cardboard (3) formed of a plurality of ribs (34) running parallel to each other and having cutouts (33) in the middle thereof, has a specific heat of 0 in the continuous internal space (36) formed by the ribs. It is a heat storage board in which a liquid of at least 0.8 cal / g · ° C is sealed. (The enclosed liquid is not shown in FIG. 3). The plastic cardboard used for this heat storage board is prepared by preparing one plastic plate and ribs by, for example, injection molding, and adding this to the other plastic plate. Can be manufactured by bonding or bonding by heat fusion.

A still further modification of the heat storage board of the present invention has the structure shown in FIG. 4 and has two parallel plastic plates (41, 42) connected between them. Formed from a number of ribs running
The plurality of ribs consist of a group of ribs (44) extending from one surface and a group of ribs (45) extending from the other surface, and are parallel in each group, but there are other groups. The specific heat is 0.8ca in the continuous inner space (46) formed by the ribs of the plastic cardboard (4) intersecting at an angle and joining at the contact point (43).
A heat storage board filled with a liquid of l / g · ° C or higher. (FIG. 4 also does not show the enclosed liquid.)

The plastic cardboard used for this heat storage board is prepared by simultaneously extruding one plastic plate and ribs and the other plastic plate and ribs, and combining them while they are in a molten state. It can be manufactured by attaching. To form ribs that are parallel at an angle to the direction of extrusion, the mandrel that forms the rib portion of the extrusion die can be reciprocated to provide zigzag ribs. Confronting two that make up plastic cardboard
It is preferable that the ribs extending from the (plate + rib) are inclined at the same angle with respect to the extrusion direction. However, if at least one of them is inclined, the ribs from both surfaces can contact each other. In other words, a heat storage board can be configured.

Alternatively, it can be manufactured by separately extruding, preparing two ribbed plastic plates, facing each other, applying an adhesive to the joint of the ribs, and integrating them. When manufacturing a relatively small thermal storage board, one type of extruded product is formed from a plastic plate with ribs extending in the direction of extrusion, cut, and cut.
It is also possible to adopt a method in which the ribs face each other so as to intersect at 90 degrees and are bonded and integrated. With this manufacturing method, the equipment is simple.

As the liquid having a specific heat of 0.8 cal / g · ° C. or more, it is preferable to use water or a mixture of water and a liquid having compatibility with water. As far as the heat storage effect is concerned, the larger the specific heat, the more advantageous the enclosed liquid is, and as is well known, water is a liquid having a maximum specific heat of 1.0 cal / g.degree. Use is advantageous. Therefore, in the following description, description will be made as a representative of the liquid to be sealed with water.

A preferred example of water or a water-compatible liquid is ethylene glycol. As is known by the name of "antifreeze", a liquid obtained by mixing ethylene glycol with water has a property that it does not freeze at a temperature below freezing point, and therefore can be advantageously used particularly when the present invention is carried out in a cold region.

The building in which the cooling and heating effect of the present invention lasts for a long time is as follows:
As shown in FIG. 5, any one of the above-described heat storage boards is used for at least a part of an inner wall, and a heat insulating material (6) is installed on the outside of the heat storage board as necessary, and heating and heating are performed inside.
(Or) A building with a cooling device (7). FIG.
When using the heat storage board of the modification shown in the above, as can be easily understood from the above, the side of the plastic corrugated cardboard filled with water faces the room, and the hollow side faces the outside. Deploy.

Any plastic can be used as the plastic forming the corrugated cardboard. However, the plastic molded into the heat storage board can secure a certain degree of strength in consideration of the fact that the weight increases relatively due to the sealing of water. Need to be something. Polycarbonate is preferred because it has a low melt viscosity, is easy to plastically process, and has high strength. In addition, polyethylene and polypropylene are also useful. Plastic cardboard can of course be produced by extrusion of molten plastic.

The shape and dimensions of the plastic cardboard may be the same as those of the existing ones, but those with slight modifications can also be used according to the form used for the building. Specifically, the thickness of two or three plates is 0.1 to 1.0 mm, the interval is 3 to 15 mm, the thickness of the ribs is 0.1 to 1.0 mm, and the pitch is 3 to 20 mm. In the case of the basic mode of FIG. 1, the cross section of the internal space in the shape of a long rectangular parallelepiped is 2.8 to 14.8 mm ×
A range of 2.9 to 19.9 mm is appropriate. The ribs do not necessarily run in a straight line, but may be bent and run as long as they are parallel.

It is also possible to manufacture a plastic cardboard made of three plates, in which water is sealed on both sides of the internal space. This can be understood as a form in which another partition is inserted between two plates of the heat storage board of the basic mode. Needless to say, the three plates need not be arranged at equal intervals, and various modifications of the plastic cardboard forming the heat storage board of the present invention are possible.

Regardless of the basic mode or the modified mode,
It is preferable that the water to be sealed is one in which the viscosity is increased by adding a thickener. Various water-absorbing polymers are useful as the thickener. As will be easily understood, when water flows, it carries heat by convection, but if the viscosity is high, convection hardly occurs, so that the thermal conductivity of the heat storage board itself can be lowered.

However, if the viscosity of the water to be enclosed is too high, it takes a long time to inject the plastic cardboard into the internal space, and there is a problem that air bubbles are easily mixed. The injection is performed by closing one end of the plastic cardboard and injecting water from a nozzle.
In some cases, a nozzle such as a syringe needle may be used to inject through a plastic plate, and the mark may be sealed with an adhesive seal. Use of vacuum suction is also effective in increasing efficiency. Heat sealing is sufficient for closing the end of the plastic cardboard,
A material for closing may be prepared separately from the corrugated cardboard, and heat sealing or bonding may be used.

A more efficient method of filling water is to inject water into each internal space in-line with the production of the plastic cardboard. In this case, a water nozzle will be provided on the extrusion die of the plastic corrugated cardboard manufacturing equipment, but care must be taken to cover the water supply pipe passing through the die mandrel with heat insulating material so that the supplied water does not cool the die. Is required.

After prolonged use, the amount of enclosed water may decrease and the heat storage effect may decrease. In that case, it is advisable to replenish by water injection using the injection needle described above. In the embodiment shown in FIG. 3 and FIG. 4, since the internal space is continuous, it is only necessary to supply water from one place, and the efficiency is good.

In the house shown in FIG. 5, when the operation of the heating device is started, the temperature of the room (8) rises above the temperature of the outside air (9) and approaches a predetermined value. During this time, the heat storage board follows the indoor temperature and rises to a temperature close to it,
Water in the heat storage board stores heat energy. Although the thickness of the heat storage board itself is limited, the amount of water enclosed therein is considerably large as a whole, and the specific heat of water is large, so that the amount of stored energy is large. Needless to say, while the energy is stored in the heat storage board, the rise in the indoor temperature is not prevented.

When the operation of the air conditioner is stopped after the temperature of the heat storage board has risen to a temperature substantially equal to the temperature of the indoor air, the indoor heat is lost due to the temperature difference from the outside air. The energy stored in the heat storage board corresponds to this, the drop in room temperature occurs later and at a slower rate. In this way, the room temperature is maintained above a certain level for a long time.

When operating and stopping the cooling device, it is sufficient to understand that the heat energy is replaced by the cold energy as described above for the operation and stop of the heating device.

[0024]

EXAMPLE A single-layer plastic cardboard as shown in FIG. 1 was produced from polyethylene. The dimensions are as follows.

The thickness of the two sheets: 0.1 mm The interval between the two sheets: 5 mm The thickness of the rib: 0.1 mm The pitch of the rib: 6
mm One end of the obtained plastic cardboard is crushed by heat sealing, and water whose viscosity is increased by adding 5% by weight of a hydrophilic acrylic resin-based water-absorbing polymer is poured into the internal space. The heat storage board of the present invention was obtained also by heat sealing. The amount of encapsulated water per product heat storage board 1 m ^2, approximately 4.8
kg.

The heat storage board was attached to the periphery and ceiling of a one-room prefabricated house prepared for the test. Outside it is provided a layer of glass wool insulation. An air conditioner was installed in the room, and the air conditioner was operated when the outside air temperature was in the range of 30 to 32 ° C., and the indoor temperature was lowered to 24 ° C., and the state was maintained for 6 hours. Thereafter, the operation of the air conditioner was stopped, and the state in which the room temperature rose after being left undisturbed was followed. After 3 hours, the room temperature was still 25 ° C., and after 6 hours it was still around 28 ° C. For comparison, when the same test was performed without using the heat storage board of the present invention, the temperature in the room was close to 30 ° C. one hour after the operation was stopped. In the embodiment, 6
The heat storage effect is evident even taking into account the fact that after hours the outside air temperature had dropped to 29-30 ° C.

On a tropical night when it is hard to sleep, the air conditioner is likely to be driven all night, but if the present invention is practiced, for example, if the user goes to bed at 11 o'clock and the switch is turned off at that time, the rising curve of the room temperature will not occur. Since it is moderate, it takes a long time for the room temperature to be close to the outside air, at which time the outside temperature drops considerably and it becomes tolerable. In this way, we can save energy,
And you don't have to worry about compromising your health by getting too cold without knowing it.

On the other hand, when heating is performed in a cold season, the wall often suffers from dew condensation. However, if the heat storage board of the present invention is used, the temperature of the inner surface of the wall is kept high, and as a result, the temperature becomes lower than the dew point. And condensation is practically not a problem.

[0029]

According to the present invention, a house in which the heat storage board of the present invention is installed on a wall or a ceiling can maintain a room temperature for a long period of time even after the operation of the air conditioner is stopped. As shown in the embodiment, the air conditioner may be turned off at bedtime, so that energy can be saved, and there is no fear of being too cold and harming health without knowing. With respect to heating in winter, condensation on the wall surface can be substantially prevented.

The production of this thermal storage board is simple and does not require any special equipment, since it is only necessary to inject water into the internal space and to seal it off following the production of the known plastic cardboard. Therefore, the manufacturing cost is low.

When considered as a building material, it is preferable from the standpoint of fire prevention that the heat storage board of the present invention contains a large amount of water, which means that it is flame retardant. The use of a flame retardant for building materials is desirable to avoid as much as possible because harmful substances are generated from the flame retardant in the event of a fire, and the present invention makes it possible. Since this heat storage board is relatively heavy, it can be advantageously used when a soundproofing effect is expected.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a basic mode of a heat storage board of the present invention.

FIG. 2 is a perspective view showing one modified embodiment of the heat storage board of the present invention.

FIG. 3 is a perspective view showing another modified embodiment of the heat storage board of the present invention, with a part cut away to show the inside.

FIG. 4 is a perspective view showing a further modification of the heat storage board of the present invention, with a part cut away to show the inside.

FIG. 5 is a conceptual cross-sectional view showing a structure of a building using the heat storage board of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Plastic corrugated cardboard 11,12 Plastic board 14 Rib 16 Internal space 2 Two-layer plastic cardboard 21,22,23 Plastic board 24 Rib 26,27 Internal space 3 Plastic corrugated cardboard 31,32 Plastic board 33 Notch
34 rib 36 internal space 4 plastic cardboard 41, 42 plastic plate 43 contact point 44, 45 rib 46 internal space 5 liquid 6 heat insulating material 7 heating and / or cooling device 8 room 9 outside air

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masaki Iwasaka 2-50, Senari-dori, Nakamura-ku, Nagoya-shi, Aichi F-term (reference) in Kawakami Sangyo Co., Ltd. 2E001 DB05 DD01 DD17 DE01 DF01 FA06 FA14 GA07 GA08 GA42 HA33 HD08 HD12 HD14 HE00 HE10 HF11 HF12 HF14 JA22 KA05 KA08 LA14 3L071 CF06

Claims (8)

[Claims] 1. A plastic corrugated cardboard formed of two parallelly arranged plastic plates and a number of ribs running between and connecting them in parallel, each of which is separated and independent by a rib. In the space, the specific heat is 0.
A heat storage board filled with a liquid of 8 cal / g · ° C or higher. 2. A two-layer plastic corrugated cardboard formed by three parallelly arranged plastic plates and a number of ribs connected therebetween and running in parallel connecting the three members, the ribs being separated and independent from each other. Of each interior space
A heat storage board in which a liquid with a specific heat of 0.8 cal / g · ° C or more is sealed on one side. 3. Two parallel plastic plates, and between them, connecting the two and running in parallel,
A liquid with a specific heat of 0.8 cal / g · ° C or more is sealed in a continuous internal space formed by the ribs of a two-layer plastic cardboard made of a large number of ribs with notches in the middle. Thermal storage board. 4. A group of ribs formed from two parallelly arranged plastic plates and a plurality of ribs interposed therebetween and running in connection with each other, the plurality of ribs extending from one surface. And a group of ribs extending from the other surface, which are parallel in each group, but intersect with the other group at an angle, and are joined at a contact point by a rib of a two-layer plastic cardboard. A heat storage board in which a liquid having a specific heat of 0.8 cal / g · ° C or more is sealed in a continuous internal space formed by the above. 5. The heat storage board according to claim 1, wherein the liquid having a specific heat of 0.8 cal / g · ° C. or more is water or a mixture of water and a liquid having compatibility with water. 6. The heat storage board according to claim 1, wherein polycarbonate, polyethylene or polypropylene is used as the plastic. 7. The heat storage board according to claim 1, wherein a liquid whose viscosity has been increased by adding a thickener is enclosed. 8. A building in which the heat storage board according to claim 1 is used for at least a part of an inner wall, a heat insulating material is provided outside the heat storage board, and a heating and / or cooling device is provided inside. .