JPS60162188A - Heat accumulator - Google Patents

Abstract

PURPOSE:To prevent generation of a supercooling phenomenon, by making a difference in temperature distributions on the central part and a surrounding part of the external circumference of a container small. CONSTITUTION:The titled heat accumulator is constituted with a container 4 obtained by connecting a plurality of pieces of small bags 3 containing a latent heat accumulating material 1 and a supercooling-prevention material 2 in all directions with each other, a heater 5 fixed to the small bag and a heat insulating material 6. A blank small bag 12 which is not filled with the heat accumulating material 1 and, moreover, not fitted with even the heater 5 is provided on the central part of the container 4. As the blank small bag 12 is neither heated by the heater 5 nor used for containment of the latent heat accumulator 1, the bag 12 becomes a radiating surface, the temperature is not raised and a temperature distribution range is made small. With this construction, as the small bag whose temperature is at the highest is covered partly with the heat insulating material, the temperature of the small bag becomes less than that of heat resisting life of the supercooling-prevention material 2 even if the temperature is raised, and generation of a supercooling phenomenon is prevented without spoiling a function of the supercooling prevention material.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a heat storage device using a latent heat storage material.

Structure of the conventional example and its problems As shown in FIGS. 1 and 2, the conventional heat storage device of this type has a structure in which the latent heat storage material 1 and the latent heat storage material 121' radiate heat after melting. A plurality of pouches 3 containing the material 2 are connected vertically and horizontally in a supercooling prevention system to prevent a supercooling phenomenon in which latent heat is released and the material is cooled as a liquid without solidifying, and a container 4 is connected to the pouch. It consisted of a heater 5 and a heat insulating material 6.

In this configuration, when the container 3 is placed horizontally, the heater 5 is energized to generate heat, and the latent heat storage material 1 is melted and then controlled to a constant temperature, the latent heat storage material 1 stored in the pouch 3 of the container 4
The temperature is not uniform, and there are high and low ranges in the temperature distribution t7
was.

FIG. 3 shows the temperature distribution of each pouch 3 of the container 4, where 7 is the temperature distribution of the latent heat storage material 1 housed in each pouch 3 in the A-p direction, and 8 is the B-B temperature distribution. The temperature distribution of the latent heat storage material 1 housed in each pouch 3 in the force direction showed that the temperature was high near the center and low at the outer periphery. Further, FIG. 4 shows the time-temperature characteristics of the latent heat storage material 1 stored in each pouch 3 after the heater 5 starts heating. 9 is the temperature of the latent heat storage material 1 stored in the pouch 3 with the highest temperature, and 10 is the temperature of the latent heat storage material 4-11 stored in the pouch 3 with the lowest temperature. During time t1 to t2, the container is heated to 71 liters of water, the temperature is controlled to a constant temperature IW after melting from the start of energization to the heater 5, and the temperature reaches an equilibrium state. The temperature characteristic 10 of the latent heat storage material 1 stored in the bag 11 is higher than the melting point 01.
Supercooling prevention 11 for preventing supercooling phenomenon is controlled so that the heat-resistant life temperature of material 2 is below 02.

By the way, the melting point 01 of the latent heat storage material 1 and the humidity rIJ of the heat resistance life n1A degrees 02 of the supercooling prevention material 2 are not large. 11-As material 2, a combination of sodium birophosphate and decahydrate was selected, the melting point 01 was 58°C,
ll1iJ thermal life temperature 02 is 80°C and approximately 20°C.
There is no IJ. Therefore, between time 12 and t3, the sachet with the highest temperature near 3 months was locally placed on a heat insulating material such as a cushion.
1, the temperature characteristic 9 of the latent heat storage material 1 rose by -4, and eventually easily exceeded the heat-resistant life temperature 02 of the supercooled rainproof material 2.

Furthermore, when utilizing the latent heat storage material 1 for heat radiation, there is a problem in that a supercooling phenomenon occurs in which the latent heat is not released while remaining in a liquid state even when the melting point is below 01.

The present invention solves such conventional problems, and the temperature of the latent heat storage material stored in the pouch at the center of the container is higher than that stored in the pouch at the outer periphery. Because of the high temperature, if it is locally covered with heat insulating material, it will easily exceed the heat-resistant life temperature of the supercooling rainproof material, and the supercooling prevention function will be lost, preventing the occurrence of supercooling phenomenon. −In order to
The purpose is to reduce the difference in temperature distribution between the center of the container and the outer periphery.

Structure of the Invention In order to achieve the first objective, the present invention provides a blank pouch in which the pouch in the center of the container is not filled with a latent heat storage material and in which no heater is arranged.

With this configuration, the pouch in the center of the container has no latent heat storage material and is not heated by a heater, so the temperature does not rise higher than the outer periphery, and it can be locally covered with heat insulating material 4A. ), the temperature will no longer exceed the heat-resistant lifespan of the supercooled rainproof material, reducing the occurrence of supercooling phenomenon.
It has the effect of IF (-).

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 5 to 7. Note that the same months are attached to the same parts as in Figures 1 to 4.

In FIG. 5, reference numeral 12 denotes a blank pouch that is not filled with the latent heat storage material 1 and is not filled with the heater 5, and is provided in the center of the container 4.

In the configuration described above, the blank pouch 12 provided near the center where the temperature was high is not heated by the heater 5 and is not used to store the latent heat storage material 1. It becomes a heat dissipation direction and can even out the temperature distribution. FIG. 6 shows the temperature distribution of each pouch 3 of the container 4. 13 is the temperature distribution in the c-c' force direction, and 14 is the temperature in the I)-D' force direction, and the distribution near the center and the outer periphery [IJ is small.

Next, Fig. 7 shows the 61'-
Shows the 2-hour-temperature characteristics. 9' is the temperature of the latent heat storage material 1 stored in the pouch 3 with the highest temperature, and 10 is the temperature of the latent heat storage material 1 stored in the pouch 3 with the lowest temperature. Even in the case where the highest temperature pouch 3 is locally covered with the heat insulating material 11 between time t2 and t3, the heat-resistant life temperature θ of the supercooling rainproof material 2
It never exceeds 2. Therefore, the occurrence of supercooling phenomenon can be prevented from rain.

Next, another embodiment of the present invention will be described with reference to FIG. In FIG. 8, the difference from the above embodiment is that the heaters 5 are not arranged and blank pouches 12 not filled with the latent heat storage material 1 are provided at a plurality of locations at regular intervals. , according to this configuration, the pouch 3 forming the container 4
If the number of blank pouches 12 is large, the temperature distribution width will not be reduced even if the blank pouches 12 are provided only in the center, but the temperature distribution width can be made smaller if the blank pouches 12 are provided at a plurality of locations at regular intervals.

Effects of the Invention As described above, according to the heat storage device of the present invention, as the temperature increases, the latent heat storage material 4 is not charged near the center N1 where the temperature distribution [11] is large, and , since it is configured with a blank pouch that does not have a heater array,
Blank sachets are used for heat dissipation, the n1 temperature does not rise, the humidity distribution RL is made small, and the sachets with the highest temperature are locally covered with heat insulating material, which prevents overcooling even if the temperature rises further. The temperature of the material is lower than the thermal life temperature, and the supercooling phenomenon can be prevented without impairing the function of the supercooling prevention material.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a conventional heat storage bag "t", Figure 2 is a partial sectional view of a conventional heat storage device, Figure 3 is a temperature distribution characteristic diagram of a conventional heat storage device, and Figure 4 is a diagram of a conventional heat storage device. A temperature one-hour characteristic diagram, FIG. 5 is a perspective view showing an embodiment of the heat storage device of the present invention,
FIG. 6 is a temperature distribution characteristic diagram of the heat storage device of the present invention, FIG. 7 is a temperature one-hour characteristic diagram of the heat storage device of the present invention, and FIG. 8 is a perspective view Qth showing another embodiment of the present invention. 1... Latent heat storage material, 2... Material for supercooling 1, 3... Small bag, 4... Container, 5... Heater, 12...・Blank sachet. Name of agent: Patent attorney Toshio Nakao and 1 other person 1st
Figure 3 1 3? 3rd figure, 4th figure, 1 hour stay - Ku Q Q Procedural amendment July 1989 111:1 Mr. Commissioner of the Patent Office ■ Display of the case - 11 1986 Patent Application No. 18639 2 Name of the invention Thermal storage device 3 Relationship with the person making the 41 amendments Patent application Person name Address 1006 Kadoma, Kadoma City, Osaka Prefecture Name (
582) Matsushita Electric Industrial Co., Ltd. Representative 111 Toshihiko Shimo 4 Agent 571 Address 1006 Oaza Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. 6 Subject of Amendment 2, Scope of Claims (2) Blank sachets The heat storage device according to claim 1, which is provided at a plurality of locations at regular intervals.

Claims (1)

[Claims] (1) A latent heat storage material, a supercooling preventive material filled in the latent heat storage material, a pouch containing the supercooling insulating material and the latent heat storage material, and a container in which a plurality of these pouches are connected vertically and horizontally. and a heater attached to the pouch, and a blank pouch is provided near the center of the container, in which the latent heat storage material and the supercooling preventer 1 are not filled with material, and the heater is not arranged. Device. Q) The heat storage device according to claim 1, wherein the blank pouches are provided at a plurality of locations at regular intervals.