JP6004766B2 - Heat storage device - Google Patents

Description

  The present invention includes a heat storage device capable of storing heat inside and taking out heat stored outside as needed, and more specifically, a nucleation mechanism of a supercooled liquid of a heat storage material that stores heat using latent heat. It relates to a heat storage device.

2. Description of the Related Art Conventionally, heat storage devices are known that store factory exhaust heat, exhaust heat from engines such as automobiles, motors, or solar heat and use it as a heat source when necessary. In this type of heat storage device, a latent heat storage material that stores heat using latent heat due to phase change (melting) from a solid phase to a liquid phase is used as the heat storage material. Among the latent heat storage materials, heat storage materials that use the supercooled state retain the liquid phase in the subcooled state even below the melting point, and release heat by phase change (crystallization) from the liquid phase to the solid phase by external stimulation. It is.
For this reason, the heat storage device is provided with a supercooling release mechanism (trigger mechanism) that stimulates the latent heat storage material at an arbitrary timing to induce crystallization.

As the trigger mechanism, for example, there are various methods such as mechanically stimulating the subcooled latent heat storage material or applying a voltage, but there is a problem that crystallization of the latent heat storage material cannot be surely induced. It was. For this reason, conventionally, a heat storage device using a mechanism in which a solid-phase heat storage material is brought into contact with a supercooled heat storage material to act as a crystallization nucleus for crystallization has been proposed.
As a specific configuration of the heat storage device, a container containing a latent heat storage material, an active material storage part containing a solid phase latent heat storage material (so-called seed crystal), and a communication part communicating these containers and the active material storage part There has been proposed a heat storage device that includes a communication portion opening / closing means that is disposed to open and close the communication portion (see, for example, Patent Document 1). In this type of heat storage device, crystallization of the latent heat storage material can be induced by opening the communication part opening / closing means at an arbitrary timing and bringing the seed crystal into contact with the subcooled latent heat storage material.

JP-A-63-105219

By the way, since the latent heat storage material releases latent heat and crystallizes, in order to reuse the latent heat storage material, it is necessary to heat and melt the latent heat storage material.
However, in the conventional configuration, since the latent heat storage material and the seed crystal are only separated by the communication part opening / closing means, the heat generated by heating the latent heat storage material in the container is activated through the communication part opening / closing means. It is assumed that the seed crystal is melted by being transmitted to the seed crystal in the material container. For this reason, when all the seed crystals are melted, the latent heat storage material cannot be induced to crystallize even when the communication section opening / closing means is opened during the next heat release, and the heat stored in the latent heat storage material is used when necessary. There was a problem that made it impossible.
It is an object of the present invention to provide a heat storage device that solves the problems of the conventional techniques described above, prevents melting of seed crystals during heat storage, and can reliably induce crystallization of the latent heat storage material during heat dissipation.

In order to achieve the above object, the present invention accommodates a latent heat storage material using a supercooled state in a heat storage container, holds the latent heat storage material in a solid state in the heat storage container, and the heat storage container A holding chamber having an opening to the opening, a lid member that can be opened and closed to close the opening of the holding chamber, and a heat storage chamber that is thermally connected to a heat source, and thermally holding the holding chamber and the heat storage chamber a preliminary chamber to isolate the formed, the heat storage vessel is provided with a partition plate for partitioning the heat storage vessel and the preliminary chamber and the regenerator, the partition plate, the heat radiation and the preliminary chamber and the heat storage chamber The communication is characterized in that communication between the heat storage chamber and the spare chamber is interrupted during heat storage .

  According to this configuration, since the preparatory chamber for thermally separating the holding chamber and the heat storage chamber is provided, melting of the solid phase latent heat storage material (seed crystal) in the holding chamber is prevented during heat storage, and the latent heat storage material is used during heat dissipation. Can be reliably induced.

  Further, the partition plate may be configured to be interlocked with opening and closing of the lid member. The holding chamber may include a hole (hole-shaped holding portion) provided in the wall of the heat storage container, and the solid phase latent heat storage material may be held in the hole.

Moreover, a heat transport member may be provided in the heat storage container, and the lid member may be attached to the heat transport member. The heat storage container may be provided with a heat conduction plate thermally connected to the heat transport member.
In addition, an opening / closing mechanism for opening / closing the lid member is provided, and the opening / closing mechanism moves the lid member so as to be able to contact and separate from the opening, thereby forming a gap between the opening and the lid member. The solid phase latent heat storage material in the holding chamber may be brought into contact with the liquid phase latent heat storage material. In addition, an opening / closing mechanism for opening and closing the lid member is provided, and the opening / closing mechanism opens the opening by rotating the lid member around the rotation axis with respect to the opening, thereby opening the opening in the holding chamber. The solid phase latent heat storage material may be brought into contact with the liquid phase latent heat storage material.

  According to the present invention, by providing a preliminary chamber that thermally separates the holding chamber and the heat storage chamber, by thermal separation between the holding chamber and the heat storage chamber, it is possible to prevent melting of the seed crystal in the holding chamber during heat storage, Crystallization of the latent heat storage material can be reliably induced.

It is a fragmentary sectional view which shows schematic structure of the thermal storage apparatus which concerns on 1st Embodiment of this invention. FIG. 2A is a partial cross-sectional view of the heat storage device showing the state change of the latent heat storage material, FIG. 2A is a view showing the latent heat storage material in a supercooled state, and FIG. It is a figure which shows the state which was made to contact a material and induced the crystallization of the latent heat storage material. FIG. 3A is a partial cross-sectional view of a heat storage device showing a state change of the latent heat storage material, FIG. 3A is a view showing a state in which the latent heat storage material is crystallized, and FIG. 3B is a view for supplying heat to the latent heat storage material. And it is a figure which shows the state which the said latent heat storage material melt | dissolved. It is a fragmentary sectional view which shows schematic structure of the thermal storage apparatus which concerns on 2nd Embodiment. FIG. 5A is a diagram illustrating the operation of the hole-shaped holding unit and the lid member, FIG. 5A is a diagram illustrating a state in which the hole-shaped holding unit is closed by the lid member, and FIG. It is a figure which shows the state by which was opened. FIG. 6A is a partial cross-sectional view of the heat storage device showing the state change of the latent heat storage material, FIG. 6A is a diagram showing the supercooled state of the latent heat storage material, and FIG. It is a figure which shows the state which was made to contact a material and induced the crystallization of the latent heat storage material. FIG. 7A is a partial cross-sectional view of the heat storage device showing the state change of the latent heat storage material, FIG. 7A is a view showing a state in which the latent heat storage material is crystallized, and FIG. And it is a figure which shows the state which the said latent heat storage material melt | dissolved.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
<First Embodiment>
FIG. 1 is a cross-sectional view showing a schematic configuration of a heat storage device 100 according to the first embodiment to which the present invention is applied. As shown in FIG. 1, the heat storage device 100 is thermally connected to the heat storage container 11 that houses the latent heat storage material 10 that is supercooled at the environmental temperature, and the latent heat storage material 10, and heat from the heat source 3 is obtained. A heat source side heat pipe (heat source side heat transport means) 15 that transmits to the latent heat storage material 10 and a use side heat pipe (use side heat transport means) 17 that transmits the heat stored in the latent heat storage material 10 to the heat utilization device 5. With. With this configuration, the heat storage device 100 stores heat transferred from the heat source 3 via the heat source side heat pipe 15 in the latent heat storage material 10 and heat stored in the latent heat storage material 10 via the use side heat pipe 17. Is supplied to the heat utilization device 5. As a combination of the heat source 3 and the heat utilization device 5, for example, heat and hot water using midnight power in a heat pump type water heater, motor exhaust heat and heating in an electric vehicle, solar heat and hot water in a solar water heater, midnight in a floor heater There are heating and heating using electric power.

The heat storage container 11 is made of, for example, stainless steel having high corrosion resistance, and the heat source side heat pipe 15 and the use side heat pipe 17 are disposed so as to penetrate through two opposing side surfaces of the heat storage container 11. . Moreover, the heat storage container 11 may be comprised from synthetic resins, such as lightweight metals, such as aluminum, a polypropylene (PP), a polyethylene terephthalate (PET), and a polyvinyl chloride (PVC).
In FIG. 1, the heat source side heat pipe 15 is arranged to penetrate the upper surface portion of the heat storage container 11, and the use side heat pipe 17 is arranged to penetrate the lower surface portion of the heat storage container 11. As long as the positions do not interfere with each other, the arrangement positions of the heat pipes are not limited to the above. It is also possible to configure the heat source side heat pipe and the use side heat pipe with a single heat pipe. In addition, when there are a plurality of heat sources or use devices, a plurality of heat pipes can be arranged accordingly.

In this embodiment, since the heat source side heat pipe 15 and the use side heat pipe 17 are partly arranged inside the heat storage container 11 respectively, the heat pipes on the heat source side heat pipe 15 and the use side heat pipe 17 Depending on the material, it is desirable to coat the surface with a resin or the like. According to this configuration, since each heat pipe is prevented from coming into direct contact with the latent heat storage material 10, corrosion of the surface of the heat pipe by the latent heat storage material 10 can be prevented.
In addition, a plurality of fins (heat conduction plates) 21 and 23 are fixed to the heat source side heat pipe 15 and the use side heat pipe 17, respectively, so that the heat exchange area with the latent heat storage material 10 is increased.

The latent heat storage material 10 is a latent heat storage material that utilizes a supercooled state, and has a property that it remains liquid and does not crystallize even below the melting point. The latent heat storage material stores heat by a phase change (melting) from a solid phase to a liquid phase by heating, and in the subsequent cooling process, the liquid phase is kept in a supercooled state even below the melting point. Then, an external stimulus is applied to the supercooled heat storage material to cause a phase change (crystallization) from the liquid phase to the solid phase to release heat.
Specifically, the seed crystal 30 is brought into contact with the subcooled latent heat storage material 10 to release the supercooled state, the phase is changed (crystallized) from the liquid phase to the solid phase, and heat is released. Examples of such a latent heat storage material include a latent heat storage material made of sodium acetate trihydrate. In addition, magnesium chloride hexahydrate, barium hydroxide octahydrate, sodium thiosulfate pentahydrate, magnesium nitrate hexahydrate, calcium chloride hexahydrate, sodium sulfate decahydrate Products, xylitol, or / and mixtures or aqueous solutions thereof.

The heat storage device 100 includes a trigger unit 13 as supercooling release means for bringing the seed crystal into contact with the latent heat storage material 10 and releasing the supercooling state.
The trigger portion 13 is formed on the inner wall of the heat storage container 11 through which the use side heat pipe 17 passes, has an opening 31A that opens into the heat storage container 11, and has a hole-shaped holding portion (holding chamber) that holds the seed crystal 30. 31) and a lid member 33 that closes the opening 31A of the hole-shaped holding portion 31.
In the present embodiment, the hole-shaped holding portions 31 are circular bottomed hole portions formed at a substantially equal distance from the central axis of the use side heat pipe 17, and seed crystals are respectively formed in the hole-shaped holding portions 31. Filled. The lid member 33 is formed in, for example, a conical shape, and the apex of the cone is inserted into the hole-shaped holding portion 31, and the side surface of the cone is brought into contact with the opening edge of the hole-shaped holding portion 31. The opening 31A of the shape holding part 31 is closed. Needless to say, the lid member 33 may have other shapes as long as the opening 31A of the hole-shaped holding portion 31 can be closed.

The lid member 33 is disposed at a position facing the hole-shaped holding part 31 and is fixed to the lowermost fin (heat conduction plate) 23 (closest to the hole-shaped holding part 31). As described above, the fin 23 is fixed to the usage-side heat pipe 17. In the present embodiment, the heat storage device 100 includes a moving mechanism 34 that moves the usage-side heat pipe 17 in the axial direction. The mechanism 34 functions as an opening / closing mechanism that opens and closes the lid member 33 with respect to the opening 31A. As the moving mechanism 34, for example, a combination of a motor and a cam or an air cylinder can be used. The heat storage container 11 includes a bearing portion 35 that slidably supports the use-side heat pipe 17 on the lower surface portion, and the bearing portion 35 is obtained when the latent heat storage material 10 accommodated in the heat storage container 11 is melted. The melted latent heat storage material 10 has a sealing property (water tightness) that does not leak to the outside of the heat storage container 11.
In the present embodiment, the lid member 33 can be separated from the hole-shaped holding part 31 at an arbitrary timing by moving the use side heat pipe 17 in the axial direction, and therefore the seed crystal 30 in the hole-shaped holding part 31. Can be brought into direct contact with the subcooled latent heat storage material 10, and crystallization of the latent heat storage material 10 can be reliably induced.
Further, at the time of heat storage, the lid member 33 is brought close to the hole-shaped holding portion 31 to close the hole-shaped holding portion 31, thereby preventing the molten latent heat storage material 10 from coming into contact with the seed crystal 30. Recrystallization of the material 10 can be prevented.

Incidentally, as described above, at the time of heat storage, the crystallized latent heat storage material 10 is melted by the heat transferred from the heat source 3 through the heat source side heat pipe 15. In this case, when the heat is transferred to the seed crystal 30 in the hole-shaped holding portion 31, the seed crystal 30 is melted, and even if the lid member 33 is opened during the next heat release, the latent heat storage material 10 There is a problem that crystallization cannot be induced and the heat stored in the latent heat storage material 10 cannot be used.
For this reason, in the present embodiment, the heat storage device 100 includes a spare chamber 37 in the heat storage container 11 adjacent to the hole-shaped holding portion 31 and thermally separating the hole-shaped holding portion 31 and the heat storage chamber 39. Specifically, the heat storage device 100 includes an annular isolation wall 38 provided on the inner wall of the heat storage container 11, and is fixed to the use side heat pipe 17 when the use side heat pipe 17 is moved in the axial direction. The preliminary chamber 37 is formed by abutment of the one fin 23A (one fin 23 higher than the lowest fin 23, hereinafter referred to as a partition fin) and the isolation wall 38. In this configuration, the partition fins 23 </ b> A that contact the annular isolation wall 38 function as a partition plate that separates the spare chamber 37 and the heat storage chamber 39.

  In the spare chamber 37, the latent heat storage material 10 is housed in the same manner as the heat storage chamber 39. Generally, since the latent heat storage material 10 has a lower thermal conductivity than metal, the seed crystal 30 in the hole-shaped holding portion 31 is thermally isolated by the latent heat storage material 10 in the preliminary chamber 37. For this reason, even when heat from the heat source 3 is supplied to the latent heat storage material 10 through the heat source side heat pipe 15 during heat storage, the supplied heat is transferred to the seed crystal 30 in the hole-shaped holding portion 31. Is suppressed, and melting of the seed crystal 30 is prevented. Therefore, crystallization of the latent heat storage material 10 can be reliably induced at the time of the next heat release.

In the present embodiment, the partition fin 23A described above is fixed to the use-side heat pipe 17, and therefore, by movement of the use-side heat pipe 17, the heat storage chamber 39 and the spare chamber 37 are communicated during heat dissipation and during heat storage. The communication between the heat storage chamber 39 and the spare chamber 37 is blocked. According to this configuration, during the heat storage, that is, from the time when the supply of heat to the latent heat storage material 10 is started until the latent heat storage material 10 reaches the supercooled state, the heat storage chamber 39 and the spare chamber Communication with 37 is cut off. For this reason, it is prevented that the latent heat storage material 10 in the solid phase in the preliminary chamber 37 that has not been melted by the heat supplied from the heat source 3 enters the heat storage chamber 39, and the latent heat storage in the heat storage chamber 39 is performed. The material 10 can be maintained in a supercooled state.
Further, since the partition fin 23A communicates with the heat storage chamber 39 and the spare chamber 37 in conjunction with the lid member 33 at the time of heat radiation, the latent heat storage material 10 crystallized with the seed crystal 30 as a nucleus stores the heat through the spare chamber 37. By entering the chamber 39, the entire latent heat storage material 10 in the heat storage container 11 can be crystallized.
Further, in the present embodiment, the partition fins 23A and the lid member 33 are attached to the use side heat pipe 17 directly or via the fins 23, and the use side heat pipe 17 is moved in the axial direction by the moving mechanism 34. Therefore, the use-side heat pipe 17 has a function of transporting heat and a function of moving the partition fins 23A and the lid member 33, thereby enabling a reduction in the number of parts and simplifying the apparatus configuration. Can be achieved.

  As described above, the fins 21 and 23 as heat conduction plates are fixed to the heat source side heat pipe 15 and the use side heat pipe 17, respectively. Each of these fins 21 and 23 prevents the temperature of the latent heat storage material 10 from being partially biased, and realizes the homogenization of heat when storing or radiating heat to the latent heat storage material 10. For this reason, from the viewpoint of heat homogenization, it is desirable that the areas of the fins 21 and 23 be wide (large).

Next, the operation of the heat storage device 100 will be described.
2 and 3 are partial cross-sectional views of the heat storage device 100 showing the state change of the latent heat storage material 10, FIG. 2A is a view showing the latent heat storage material 10 in a supercooled state, and FIG. ) Is a diagram showing a state in which the seed crystal 30 is brought into contact with the latent heat storage material 10 by the trigger unit 13 to induce crystallization of the latent heat storage material 10, and FIG. 3A is a state in which the latent heat storage material 10 is crystallized. FIG. 3B is a diagram illustrating a state in which heat is supplied to the latent heat storage material 10 and the latent heat storage material is melted. The heat storage device 100 stores the latent heat storage material 10 in the heat storage container 11 in a supercooled state, that is, in a liquid state after storing heat. According to this configuration, heat can be stored in the latent heat storage material 10 at ambient temperature without using a heat insulating material. In the following description, reference numeral 10A denotes a latent heat storage material in a supercooled state (liquid), and reference numeral 10B denotes a latent heat storage material in a crystallization state (solid).

  When taking out the heat stored from the latent heat storage material 10A in the supercooled state shown in FIG. 2A, the moving mechanism 34 is operated at an arbitrary timing as shown in FIG. Is lifted along the axial direction, the lid member 33 is moved upward to open the opening 31A of the hole-shaped holding part 31, and the seed crystal 30 held in the hole-shaped holding part 31 is subjected to latent heat storage. Contact with material 10A. When the seed crystal 30 comes into contact with the latent heat storage material 10A, the seed crystal 30 serves as a nucleus for crystallization of the latent heat storage material 10A, and crystallization of the latent heat storage material 10A is started. In this configuration, the partition fin 23A also moves upward together with the lid member 33, a gap 38A is formed between the partition fin 23A and the annular isolation wall 38, and the latent heat storage material 10A is crystallized through the gap 38A. With the progress, the latent heat held in the latent heat storage material 10A is released.

  In this case, it is desirable to move the use side heat pipe 17 up and down in the axial direction during a predetermined time until the crystallization of the latent heat storage material 10A is completed. According to this configuration, the plurality of fins 23 fixed to the use-side heat pipe 17 move up and down, whereby the latent heat storage material 10A in the heat storage container 11 is stirred by the fins 23 and the latent heat storage material 10A Crystallization time can be shortened.

The heat released by the crystallization of the latent heat storage material 10 </ b> A is transmitted to the heat utilization device 5 (FIG. 1) through the use side heat pipe 17 and used by the heat utilization device 5. The utilization side heat pipe 17 is held at a position where the lid member 33 is closed and the partition fins 23A are in contact with the isolation wall 38 when the crystallization of the latent heat storage material 10A has progressed to some extent.
As shown in FIG. 3 (A), when all of the latent heat storage material 10A in the heat storage container 11 is crystallized, the release of latent heat is completed and cooled to the environmental temperature over time.

When reusing the heat storage device 100, as shown in FIG. 3B, heat from the heat source 3 (FIG. 1) is supplied to the latent heat storage material 10B through the heat source side heat pipe 15, and this latent heat storage is performed. The material 10B is melted again to store heat. In this case, a preliminary chamber 37 is provided between the heat storage chamber 39 and the hole-shaped holding portion 31, so that the seed crystal 30 in the hole-shaped holding portion 31 is heated by the latent heat storage material 10 in the preliminary chamber 37. Isolated. For this reason, even when heat from the heat source 3 is supplied to the latent heat storage material 10 through the heat source side heat pipe 15 during heat storage, the supplied heat is transferred to the seed crystal 30 in the hole-shaped holding portion 31. Is suppressed, and the seed crystal 30 can be prevented from melting.
Further, even when the supply of heat from the heat source 3 is completed before the latent heat storage material 10 in the preliminary chamber 37 is completely melted in the heating process for heat storage, as shown in FIG. Since the fin 23A is held at a position in contact with the isolation wall 38 and communication between the spare chamber 37 and the heat storage chamber 39 is blocked, the molten latent heat storage material 10A in the heat storage chamber 39 and the spare chamber 37 Contact with the solid phase latent heat storage material 10B is prevented, and crystallization of the latent heat storage material 10A can be prevented in the cooling process.

  As described above, according to the present embodiment, the latent heat storage material 10 that uses the supercooled state is accommodated in the heat storage container 11, and the seed crystal 30 of the latent heat storage material 10 is held in the heat storage container 11. A hole-shaped holding part 31 having an opening 31A to the heat storage container 11, a lid member 33 that can be opened and closed to close the opening 31A of the hole-shaped holding part 31, and a heat storage chamber 39 that is thermally connected to the heat source 3. Between the hole-shaped holding part 31 and the heat storage chamber 39, a spare chamber 37 that thermally isolates the hole-shaped holding part 31 and the heat storage chamber 39 is provided. The seed crystal 30 is prevented from melting, and the crystallization of the latent heat storage material 10 can be reliably induced.

Further, according to the present embodiment, the heat storage container 11 includes the partition fins 23A as the partition plates that divide the heat storage container 11 into the heat storage chamber 39 and the spare chamber 37, and the partition fins 23A store heat during heat dissipation. Since the latent heat storage material 10 crystallized using the seed crystal 30 as a nucleus enters the heat storage chamber 39 through the preliminary chamber 37 in order to connect the chamber 39 and the preliminary chamber 37, the entire latent heat storage material 10 in the heat storage container 11 is obtained. It can be crystallized (solidified).
Further, since the partition fin 23A blocks communication between the heat storage chamber 39 and the auxiliary chamber 37 during heat storage, the latent heat storage material 10 in the solid state in the auxiliary chamber 37 that has not been melted by the heat supplied from the heat source 3 is provided. The entry into the heat storage chamber 39 is prevented, and the latent heat storage material 10 in the heat storage chamber 39 can be maintained in a supercooled state.

  Moreover, according to this embodiment, since the partition fin 23A is interlocked with the opening and closing of the lid member 33, the mechanism for performing these opening and closing operations can be simplified.

  Moreover, according to this embodiment, since the use side heat pipe 17 was provided in the heat storage container 11, and the cover member 33 was attached to the use side heat pipe 17 via the fin 23, the use side heat pipe 17 performs heat transport. By combining the function to be performed and the function of moving the partition fins 23 </ b> A and the lid member 33, it is possible to reduce the number of parts and to simplify the apparatus configuration.

  Further, according to the present embodiment, the heat storage container 11 is provided with the fins 21 and 23 that are thermally connected to the heat source side heat pipe 15 and the use side heat pipe 17, respectively. It is possible to prevent the temperature from being partially biased, and to realize the homogenization of heat at the time of heat storage or heat dissipation to the latent heat storage material 10.

Second Embodiment
In the first embodiment described above, the use-side heat pipe 17 is moved in the axial direction to open and close the lid member 33 and disconnect the spare chamber 37 and the heat storage chamber 39. This second embodiment Now, the configuration is different in that the use side heat pipe 17 is rotated.
FIG. 4 is a partial cross-sectional view showing a schematic configuration of the heat storage device 110 according to the second embodiment.
In the second embodiment, the same components as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

The heat storage device 110 includes a trigger unit 53 as a supercooling release unit that induces crystallization by bringing the seed crystal 30 into contact with the latent heat storage material 10 at an arbitrary timing. As shown in FIG. 4, the trigger portion 53 is formed on the inner wall of the heat storage container 11 through which the use-side heat pipe 17 penetrates, and has an opening 31 </ b> A into the heat storage container 11 and holds a seed crystal 30. And a lowermost fin 23 </ b> B as a lid member that closes the opening 31 </ b> A of the hole-shaped holding portion 31.
As shown in FIG. 5 (A), the hole-shaped holding portion 31 is a circular bottomed hole portion formed at substantially equal distances and equal angular intervals from the central axis of the usage-side heat pipe 17. The seed crystal 30 is filled in the portion 31. In the present embodiment, the lowermost fin 23B is formed with a communication hole 24 having substantially the same diameter as the opening 31A of the hole-shaped holding part 31 at a position facing the hole-shaped holding part 31 described above, as shown in FIG. As shown in FIG. 5B, when the fin 23B is held at a position where the hole-shaped holding portion 31 and the communication hole 24 are displaced as shown in FIG. 5A, the opening 31A of the hole-shaped holding portion 31 is closed. When the fin 23B is rotated around the use side heat pipe 17 and the fin 23 is held at a position where the hole-shaped holding portion 31 and the communication hole 24 overlap, the opening 31A of the hole-shaped holding portion 31 is opened. .

The heat storage device 110 includes a rotation mechanism 51 that rotates the use-side heat pipe 17. In the present embodiment, the rotation mechanism 51 functions as an opening / closing mechanism. As the rotation mechanism 51, for example, a combination of a motor, a speed reducer, and a transmission belt can be used.
The heat storage container 11 includes a bearing portion 35 that rotatably supports the use-side heat pipe 17 on the lower surface portion. The latent heat storage material 10 has a sealing property (water tightness) that does not leak out of the heat storage container 11.

  The heat storage device 110 includes a plate-like member 54 that is fixed in the heat storage container 11 and divides the heat storage container 11 into a heat storage chamber 39 and a spare chamber 37. The plate-like member 54 includes communication holes 55 formed at substantially equal distances and equiangular intervals from the central axis of the use side heat pipe 17, similarly to the lowermost fin 23 </ b> B described above. In addition, partition fins 23 </ b> C are disposed adjacent to the plate member 54 on the upper surface portion of the plate member 54. This partition fin 23 </ b> C includes a communication hole 25 at a position facing the communication hole 55 of the plate-shaped member 54, and, similar to the trigger portion 53, the heat storage chamber 39 and the spare chamber 37 are separated by the rotation of the use side heat pipe 17. Communicate or block. In this embodiment, the partition plate 56 is configured by including the plate-like member 54 and the partition fins 23 </ b> C.

Next, the operation of the heat storage device 110 will be described.
6 and 7 are partial cross-sectional views of the heat storage device 110 showing the state change of the latent heat storage material 10, FIG. 6A is a view showing the latent heat storage material 10 in a supercooled state, and FIG. ) Is a diagram showing a state in which the seed crystal 30 is brought into contact with the latent heat storage material 10 by the trigger unit 53 and the crystallization of the latent heat storage material 10 is induced, and FIG. 7A is a state in which the latent heat storage material 10 is crystallized. FIG. 7B is a diagram showing a state in which heat is supplied to the latent heat storage material 10 and the latent heat storage material is melted.

When the heat stored in the subcooled latent heat storage material 10A shown in FIG. 6 (A) is taken out, as shown in FIG. 6 (B), the rotation mechanism 51 is operated at an arbitrary timing, and the use side heat pipe 17 Is rotated to a position where the communication hole 24 of the fin 23B in the lowermost stage overlaps with the opening 31A of the hole-shaped holding part 31, and the seed crystal 30 held in the hole-shaped holding part 31 is transferred to the latent heat storage material 10A. Contact with. When the seed crystal 30 comes into contact with the latent heat storage material 10A, the seed crystal 30 serves as a nucleus for crystallization of the latent heat storage material 10A, and crystallization of the latent heat storage material 10A is started.
In this case, it is desirable to continue the rotation of the use side heat pipe 17 for a predetermined time until the crystallization of the latent heat storage material 10A is completed. According to this configuration, the plurality of fins 23 fixed to the use-side heat pipe 17 rotate, whereby the latent heat storage material 10A in the heat storage container 11 is stirred by the fins 23, and the crystal of the latent heat storage material 10A is crystallized. Can be shortened.

The heat released by the crystallization of the latent heat storage material 10 </ b> A is transmitted to the heat utilization device 5 (FIG. 4) through the use side heat pipe 17 and used by the heat utilization device 5. The utilization side heat pipe 17 rotates when the crystallization of the latent heat storage material 10A has progressed to some extent, and holds the communication hole 24 of the lowermost fin 23B and the hole-shaped holding portion 31 in a position where they do not overlap and overlap. The opening 31A of the hole-shaped holding part 31 is closed. At this position, the communication hole 25 of the partition fin 23 </ b> C is displaced from the communication hole 55 of the plate-like member 54 and does not overlap, so that the spare chamber 37 is disconnected from the heat storage chamber 39.
As shown in FIG. 7A, when all of the latent heat storage material 10A in the heat storage container 11 is crystallized, the release of the latent heat is completed, and is cooled to the environmental temperature over time.

When the heat storage device 110 is reused, as shown in FIG. 7B, heat from the heat source 3 (FIG. 4) is supplied to the latent heat storage material 10B through the heat source side heat pipe 15, and this latent heat storage is performed. The material 10B is melted again to store heat. In this case, a preliminary chamber 37 is provided between the heat storage chamber 39 and the hole-shaped holding portion 31, so that the seed crystal 30 in the hole-shaped holding portion 31 is heated by the latent heat storage material 10 in the preliminary chamber 37. Isolated. For this reason, even when heat from the heat source 3 is supplied to the latent heat storage material 10 through the heat source side heat pipe 15 during heat storage, the supplied heat is transferred to the seed crystal 30 in the hole-shaped holding portion 31. Is suppressed, and the seed crystal 30 can be prevented from melting.
Further, even when the supply of heat from the heat source 3 is completed before the latent heat storage material 10 in the preliminary chamber 37 is completely melted in the heating process for storing heat, as shown in FIG. The partition fins 23 </ b> C are held at positions where the communication holes 25 of the partition fins 23 </ b> C are not overlapped with the communication holes 55 of the plate-like member 54, and the communication between the spare chamber 37 and the heat storage chamber 39 is blocked. For this reason, contact between the melted latent heat storage material 10A in the heat storage chamber 39 and the solid phase latent heat storage material 10B in the preliminary chamber 37 is prevented, and crystallization of the latent heat storage material 10A can be prevented in the cooling process.

DESCRIPTION OF SYMBOLS 10 Latent heat storage material 10A Latent heat storage material of the supercooled state 10B Crystallized latent heat storage material 11 Thermal storage container 13, 53 Trigger part (supercool release part)
17 User-side heat pipe (heat transport member)
23 Fin (heat conduction plate)
23A Partition fin (partition plate)
23B Fin (lid member)
23C partition fin 30 seed crystal (latent heat storage material in solid phase)
31 Hole holder (holding chamber)
31A opening 33 lid member 34 moving mechanism (opening / closing mechanism)
37 Preparatory chamber 39 Heat storage chamber 51 Rotation mechanism (opening / closing mechanism)
100, 110 heat storage device

Claims (7)

A latent heat storage material utilizing a supercooled state is accommodated in a heat storage container, the latent heat storage material is held in a solid state in the heat storage container, and a holding chamber having an opening to the heat storage container, and the holding A cover member that can be opened and closed to close the opening of the chamber; and a heat storage chamber thermally connected to a heat source; and a preliminary chamber that thermally isolates the holding chamber and the heat storage chamber ;
The heat storage container includes a partition plate that partitions the heat storage container into the heat storage chamber and the spare chamber, and the partition plate communicates the heat storage chamber and the spare chamber when radiating heat, and the heat storage chamber when heat is stored. The heat storage device is characterized in that communication between the auxiliary chamber and the spare chamber is cut off . The heat storage device according to claim 1, wherein the partition plate is interlocked with opening and closing of the lid member . The heat storage device according to claim 1 , wherein the holding chamber includes a hole provided in a wall of the heat storage container, and the solid phase latent heat storage material is held in the hole . The heat storage device according to any one of claims 1 to 3 , wherein a heat transport member is provided in the heat storage container, and the lid member is attached to the heat transport member . The heat storage device according to claim 4 , wherein a heat conduction plate thermally connected to the heat transport member is installed in the heat storage container. An opening / closing mechanism that opens and closes the lid member, the opening / closing mechanism provides a gap between the opening and the lid member by moving the lid member so as to be able to contact and separate from the opening. The heat storage device according to any one of 1 to 5, wherein the solid-phase latent heat storage material in the holding chamber is brought into contact with the liquid-phase latent heat storage material . An opening / closing mechanism for opening and closing the lid member, wherein the opening / closing mechanism opens the opening by rotating the lid member around a rotation axis with respect to the opening; The heat storage device according to any one of 1 to 5 , wherein the latent heat storage material in a state is brought into contact with the latent heat storage material in a liquid phase .

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