JP7296116B2 - Heat and cold insulation device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-retaining and cold-insulating device having a heat-insulating container having a vacuum heat-insulating structure.

Patent Literature 1 discloses a heat-insulating container that maintains its heat-insulating effect over a long period of time. This heat insulating container has a structure in which an inner container and an outer container having a vacuum heat insulating structure are fitted together. In this heat insulating container, by increasing the overlap between the inner container and the outer container and lengthening the heat transfer path between the inside and the outside, high heat insulation can be obtained.

Further, Patent Document 1 further discloses a heat and cold insulation device using the heat insulating container. In this heat and cold insulation device, a heat and cold insulation section capable of accommodating an object to be kept warm and cold, and a heat storage member filled around the heat and cold insulation section are provided inside the heat insulating container. In this heat and cold insulation device, the heat and cold insulation effect can be maintained for a long period of time by combining the heat storage member with the heat insulating container.

JP 2018-164484 A

In order to maintain the heat and cold insulation effect of the heat and cold insulation device described in Patent Document 1 for a longer period of time, it is necessary to increase the amount of the heat storage member accommodated in the heat insulating container. In order to increase the amount of the heat storage member, it is necessary to use a heat insulating container with a large volume. Therefore, in order to improve the heat and cold insulation performance of the above heat and cold insulation device, it is necessary to increase the size of the whole.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a heat-retaining and cold-reserving apparatus configured so that fluid can be taken in and out of a heat-insulating container without impairing heat-retaining and cold-retaining performance.

In order to achieve the above object, a heat and cold insulation device according to an embodiment of the present invention comprises a heat insulating container composed of an inner container and an outer container, and a channel through which fluid can move.
The inner container includes a first tubular portion extending along one axis, a first bottom portion closing the first tubular portion from a first direction along the one axis, the first tubular portion and the first a first vacuum layer wrapped in series across the bottom.
The outer container includes a second tubular portion that extends along the one axis and forms an overlapping region that overlaps with the outside of the first tubular portion, and a second tubular portion that is arranged in a direction opposite to the first direction. It has a second bottom portion that closes from two directions, and a second vacuum layer that is continuously enclosed over the second cylindrical portion and the second bottom portion.
The flow path includes at least one connecting tubular portion connecting the inside and the outside of the insulating container between the first tubular portion and the second tubular portion.

In this heat and cold insulation device, the passage including the connection tubular portion provided between the first tubular portion and the second tubular portion in the overlap region where the first tubular portion and the second tubular portion overlap , can allow fluid to enter and exit the insulated container. In particular, in this heat and cold insulation device, even in the configuration in which the connecting tubular portion is provided, by increasing the overlapping area in the uniaxial direction, it is possible to ensure high heat insulating performance in the heat insulating container. Thus, in this heat and cold insulation device, it is possible to realize a configuration in which fluid can be taken in and out of the heat insulating container without impairing the heat and cold insulation performance.

A dimension along the one axis of the overlapping region may be 70% or more of a dimension occupied along the one axis by the first tubular portion and the second tubular portion.
The flow path may include a plurality of connecting tubular portions. The heat and cold insulation device may further include a sealing member that seals around the plurality of connecting tubular portions between the first tubular portion and the second tubular portion.
The heat and cold insulation device may further include a heat exchanging portion arranged inside the heat insulating container and connected to the plurality of connecting tubular portions.
The flow path may further comprise an inner tubular portion disposed inside the insulating container and connected to the plurality of connecting tubular portions.
The heat and cold insulation device may further include a heat and cold insulation section capable of accommodating an object, and a heat storage member or cold storage member arranged around the heat and cold insulation section.

According to the present invention, it is possible to provide a heat-retaining and cold-reserving device configured to allow fluid to be taken in and out of a heat-insulating container without impairing heat-retaining and cold-retaining performance.

BRIEF DESCRIPTION OF THE DRAWINGS It is a longitudinal cross-sectional view of the heat and cold insulation apparatus which concerns on the 1st Embodiment of this invention. FIG. 2 is a cross-sectional view of the heat and cold insulation device taken along line AA in FIG. 1; FIG. 4 is a vertical cross-sectional view showing another form of the heat and cold insulation device. FIG. 2 is a vertical cross-sectional view illustrating the configuration of a spacecraft that accommodates the heat and cold insulation device. It is a longitudinal cross-sectional view which shows the modification of the said thermal insulation cold storage apparatus. FIG. 6 is a cross-sectional view of the heat and cold insulation device taken along the line BB in FIG. 5; It is a cross-sectional view which shows the modification of the said thermal insulation cold storage apparatus. It is a cross-sectional view which shows the modification of the said thermal insulation cold storage apparatus. FIG. 9 is a vertical cross-sectional view illustrating the configuration of a spacecraft that accommodates a modification of the heat and cold insulation device shown in FIG. 8; FIG. 9 is a vertical cross-sectional view illustrating the configuration of a spacecraft that accommodates a modification of the heat and cold insulation device shown in FIG. 8; FIG. 10 is a vertical cross-sectional view of a heat and cold insulation device according to a second embodiment of the present invention; FIG. 12 is a cross-sectional view of the heat and cold insulation device taken along line DD in FIG. 11; FIG. 12 is a longitudinal sectional view showing a modification of the heat and cold insulation device shown in FIG. 11;

Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention should not be construed as limited by the following embodiments. Each drawing also shows an X-axis, a Y-axis, and a Z-axis that are orthogonal to each other. The X-, Y-, and Z-axes are common to all drawings.

<First Embodiment>
[Configuration of heat and cold insulation device 1]
(Outline configuration)
FIG. 1 is a longitudinal sectional view of a heat and cold insulation device 1 according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view of the heat and cold insulation device 1 along line AA in FIG. The heat and cold insulation device 1 includes a heat insulating container T and a flow path 30 . The heat insulating container T is formed in a hollow cylindrical shape centered on a central axis C parallel to the Z axis.

The heat insulating container T has an inner container 10 and an outer container 20 . Inside the heat-insulating container T, there is provided a storage part 40 separated from the outside by the inner container 10 and the outer container 20 . The channel 30 is configured so that a fluid such as liquid or gas can flow through the inside and outside of the heat insulating container T. As shown in FIG.

The heat and cold insulation device 1 according to the present embodiment has a configuration intended to keep the storage portion 40 of the heat insulating container T cool. Specifically, although the details will be described later, the heat and cold insulation device 1 feeds a low-temperature fluid into the storage portion 40 of the heat insulating container T through the flow path 30, thereby increasing the cold insulation effect of the storage portion 40 of the heat insulating container T. Can last for a long time.

(Insulated container T)
The inner container 10 has a first tubular portion 11 , a first bottom portion 12 and a first open end portion 13 . The first tubular portion 11 extends cylindrically along the central axis C. As shown in FIG. The first bottom portion 12 is formed in a dome shape protruding upward in the Z-axis direction, and closes the first tubular portion 11 from above in the Z-axis direction. The inner container 10 is opened downward in the Z-axis direction at a first open end 13 at the lower end in the Z-axis direction.

A first vacuum layer 14 is formed in the inner container 10 . A first vacuum layer 14 is enclosed in series over the first tubular portion 11 and the first bottom portion 12 and is sealed at the first open end 13 . In the inner container 10, since the first vacuum layer 14 is kept at a pressure lower than the atmospheric pressure, high heat insulation performance is obtained in the thickness direction.

The outer container 20 has a second tubular portion 21 , a second bottom portion 22 and a second open end portion 23 . The second tubular portion 21 extends cylindrically along the central axis C. As shown in FIG. The second bottom portion 22 is formed in a dome shape protruding downward in the Z-axis direction, and closes the second cylindrical portion 21 from below in the Z-axis direction. The outer container 20 is open upward in the Z-axis direction at a second open end 23 at the upper end in the Z-axis direction.

A second vacuum layer 24 is formed in the outer container 20 . A second vacuum layer 24 is enclosed in series over the second tubular portion 21 and the second bottom portion 22 and is sealed at the second open end 23 . In the outer container 20, since the second vacuum layer 24 is kept at a pressure lower than the atmospheric pressure, high heat insulation performance is obtained in the thickness direction.

The configurations of the vacuum layers 14 and 24 of the inner container 10 and the outer container 20 can be determined as appropriate. For example, the thickness of the vacuum layers 14 and 24 can be determined within a range that provides sufficient heat insulating performance and satisfies the shape requirements of the inner container 10 and the outer container 20 . Also, the degree of vacuum of the vacuum layers 14 and 24 can be determined within a range in which sufficient heat insulating performance can be obtained.

Moreover, the shapes of the inner container 10 and the outer container 20 are not limited to those described above, and can be changed as appropriate within the range in which the above effects are achieved. For example, the shape of the first bottom portion 12 of the inner container 10 and the second bottom portion 22 of the outer container 20 is not limited to a dome shape. It may be mortar-shaped.

The outer diameter of the tubular portion 11 of the inner container 10 is smaller than the inner diameter of the tubular portion 21 of the outer container 20 . In the heat insulating container T, the inner container 10 and the outer container 20 are fitted together so that the second tubular portion 21 faces the outside of the first tubular portion 11 . As a result, the inner container 10 and the outer container 20 form a storage portion 40 that is the internal space of the heat insulating container T. As shown in FIG.

In the heat-insulating container T, the entire circumference of the containing portion 40 is insulated from the outside by at least one of the vacuum layers 14 and 24 of the inner container 10 and the outer container 20 . As a result, in the heat and cold insulation device 1, high heat insulating performance in the heat insulating container T is obtained, that is, high cold insulation effect in the accommodating portion 40 of the heat insulating container T is obtained.

The heat insulating container T is formed with an overlapping region R in which the cylindrical portions 11 and 21 are overlapped with a gap in the radial direction. In the region between the cylindrical portions 11 and 21 in the superimposed region R, there are a first connecting tubular portion 31 and a second connecting tubular portion 32 of a flow path 30 described later, and a sealing member S filled without gaps around them. , is provided.

In the heat-insulating container T, the region between the first vacuum layer 14 of the inner container 10 and the second vacuum layer 24 of the outer container 20 in the overlapping region R separates the storage section 40 from the outside without receiving the action of vacuum heat insulation. It becomes the only heat transfer path for thermal connection. A heat transfer path along this overlapping region R is composed of the outer wall of the first cylindrical portion 11, the inner wall of the second cylindrical portion 21, and the region between the cylindrical portions 11,21.

That is, the heat transfer path along the overlapping region R extends in the Z-axis direction between the second open end 23 of the outer container 20 and the first open end 13 of the inner container 10 in the overlapping region R, 40 and the outside are connected in the Z-axis direction. Therefore, in the heat-insulating container T, heat leakage in the Z-axis direction due to the heat transfer paths along the overlapping region R tends to cause deterioration of the heat-insulating performance.

In this respect, in the heat insulating container T, the larger the dimension W of the superimposed region R in the Z-axis direction, the larger the heat resistance of the heat transfer path, so the heat leak becomes smaller. Therefore, by increasing the overlap of the cylindrical portions 11 and 21, the heat insulating container T has an overlap region with respect to the dimension L in the direction of the central axis C, which includes both outer regions of the cylindrical portions 11 and 21 that are not overlapped with each other. The ratio of the dimension W of R is large.

From such a point of view, specifically, the dimension W of the overlapping region R is preferably 70% or more, more preferably 80% or more, of the dimension L of the tubular portions 11 and 21 in the direction of the central axis C. preferable. However, since it is sufficient for the heat-insulated container T to have an appropriate heat insulation for each application, the ratio of the dimension W of the overlapping region R can be set below the above range depending on the application.

In addition, in the heat insulating container T, if the radial distance between the cylindrical portions 11 and 21 is the same, the larger the radial dimension D perpendicular to the central axis C, the more the center of the heat transfer path along the superimposed region R. Since the area of the cross section perpendicular to the axis C is increased, the thermal resistance is decreased. Therefore, the heat-insulated container T is preferably designed so that the radial dimension D is small within a range in which the capacity of the storage portion 40 required for the application can be secured.

Moreover, the sealing member S that is filled between the cylindrical portions 11 and 21 in the overlapping region R is preferably formed of a material having low thermal conductivity such as various rubbers and various resins. As a result, in the heat transfer path along the overlapping region R of the heat and cold insulation device 1, in addition to heat transfer due to convection and ventilation, heat leakage due to heat conduction in the sealing member S can be suppressed.

With such a configuration, in the heat-insulating container T, it is possible to effectively suppress heat leakage from the housing portion 40 to the outside. Therefore, with the above-described configuration, the heat-insulating container T can achieve high heat-insulating performance with a lightweight and compact configuration without using a heavy heat-insulating material or electric power.

(Flow path 30)
The flow path 30 includes a first connecting tubular portion 31 and a second connecting tubular portion 32 . The connecting tubular portions 31 and 32 extend in the sealing member S along the Z-axis direction in the overlapping region R where the cylindrical portions 11 and 21 overlap, and connect the accommodating portion 40 of the heat insulating container T to the outside. The heat and cold insulation device 1 also has a hollow heat exchange section V which is provided on the lower side in the Z-axis direction inside the housing section 40 of the heat insulating container T and which is connected to the connection tubular sections 31 and 32 .

The first connection tubular portion 31 protrudes upward in the Z-axis direction from the second open end portion 23 of the outer container 20 and has an inlet _EIN at the upper end in the Z-axis direction. In the heat and cold insulation device 1, by introducing the low temperature fluid from the inlet _EIN , the low temperature fluid is introduced into the heat exchanging portion V arranged in the housing portion 40 of the heat insulating container T through the first connecting tubular portion 31. can flow into

The second connecting tubular portion 32 protrudes upward in the Z-axis direction from the second open end portion 23 of the outer container 20, and has an outlet _EOUT at the upper end in the Z-axis direction. In the heat and cold insulation device 1 , the low-temperature fluid in the heat exchange section V can flow out of the heat insulating container T from the outlet E _OUT through the second connecting tubular section 32 .

The inlet E _IN of the first connecting tubular portion 31 and the outlet E _OUT of the second connecting tubular portion 32 are preferably provided with joints J as shown in FIG. 1 . As a result, a pipe for supplying the low-temperature fluid is connected to the inlet E _IN of the first connecting tubular portion 31 and a pipe for discharging the low-temperature fluid is connected to the outlet E _OUT of the second connecting tubular portion 32 . can be connected.

In the heat and cold insulation device 1 according to the present embodiment, a liquefied gas obtained by compressing and liquefying gas is used as the fluid to be introduced into the inlet _EIN of the first connection tubular portion 31 . As the liquefied gas, for example, a general-purpose product sealed in a cylinder can be used. The liquefied gas vaporizes when the pressure approaches the atmospheric pressure, and the heat of vaporization at that time takes heat from the surrounding structure, thereby lowering the temperature. At that time, if the surrounding environment is near the atmospheric pressure, the generated steam becomes a cooling gas of room temperature or below.

In the heat and cold insulation device 1, the liquefied gas introduced into the inlet _EIN passes through the first connecting tubular portion 31 in a liquid state and enters the heat exchanging portion V near atmospheric pressure. As a result, the liquefied gas that has passed through the first connecting tubular portion 31 and entered the heat exchanging portion V is released from pressure in the heat exchanging portion V and vaporized to become a cooling gas.

The cooling gas generated in the heat exchanging portion V cools the space outside the heat exchanging portion V in the housing portion 40 of the heat insulating container T by supplying cold heat to the heat exchanging portion V from the inside. Then, the cooling gas in the heat exchange portion V is increased as the pressure in the heat exchange portion V rises due to the vaporization of the liquefied gas, and the liquefied gas is further supplied from the first connecting tubular portion 31 to the heat exchange portion V. It is discharged from the outlet E _OUT through the second connecting tubular portion 32 .

As described above, the fluid used in the heat and cold insulation device 1 is liquid (liquefied gas) in the first connecting tubular portion 31 and gas (cooling gas) in the heat exchanging portion V and the second connecting tubular portion 32 . Therefore, in the second connecting tubular portion 32, the volumetric flow rate of the fluid is greater than in the first connecting tubular portion 31, and the pressure loss increases.

For this reason, in the heat and cold insulation device 1 , it is preferable that the second connection tubular portion 32 has a larger flow passage cross-sectional area perpendicular to the flow direction of the fluid than the first connection tubular portion 31 . Therefore, in the heat and cold insulation device 1, it is preferable that the number of the second connection tubular portions 32 is larger than that of the first connection tubular portions 31 in order to smoothly discharge the cooling gas. For example, as shown in FIG. 2, the heat and cold insulation device 1 can be provided with three second connection tubular portions 32a, 32b, and 32c for one first connection tubular portion 31. As shown in FIG.

As described above, in the heat and cold insulation device 1, the cooling gas can be caused to act on the accommodating portion 40 of the heat insulating container T in the heat exchanging portion V without opening the heat insulating container T. As shown in FIG. Therefore, in the heat and cold insulation device 1, the duration of the cold insulation effect of the storage portion 40 of the heat insulating container T can be easily extended by introducing the liquefied gas from the inlet _EIN of the first connecting tubular portion 31.

In addition, in the heat and cold insulation device 1, the dimension W of the overlapping region R is large, that is, the connection tubular portions 31 and 32 are long in the Z-axis direction, so the thermal resistance of the connection tubular portions 31 and 32 along the Z-axis direction is increased. . Therefore, in the heat and cold insulation device 1, heat leakage through the connection tubular portions 31 and 32 between the storage portion 40 of the heat insulating container T and the outside is less likely to occur.

The supply of fluid to the heat exchanging portion V in the heat and cold insulation device 1 can be performed continuously, or can be performed, for example, only when the temperature rise of the storage portion 40 is detected. Further, the heat and cold insulation device 1 may be configured such that the first connecting tubular portion 31 is connected to a fluid supply source such as a cylinder only when the low-temperature fluid is supplied to the heat exchanging portion V.

Also, the heat exchange section V may not be configured as an evaporator that evaporates the liquefied gas as described above. In other words, the heat exchanging portion V has a configuration different from the above as long as the heat of the fluid supplied from the outside through the first connecting tubular portion 31 can be applied to the accommodating portion 40 of the heat insulating container T. may be

(Cool storage member 50)
In the heat and cold insulation device 1 according to the present embodiment, by using the cold storage member 50 having the function of storing cold heat, the cold insulation effect can be maintained for a long period of time by maintaining the temperature of the storage portion 40 of the heat insulating container T constant. Become. FIG. 3 is a longitudinal sectional view showing a form using the cold storage member 50 in the heat and cold insulation device 1 according to this embodiment.

In the heat and cold insulation device 1 shown in FIG. The heat and cold insulation part 60 is configured as a case member capable of accommodating an object to be kept cold, for example. The shape of the heat and cold insulation part 60 can be arbitrarily determined, and can be, for example, a rectangular parallelepiped shape, a cylindrical shape, a spherical shape, or the like.

The cold storage member 50 is configured as a cold insulation material for maintaining the heat and cold insulation portion 60 at a constant temperature. As the cool storage member 50, for example, a latent heat cool storage member using solid-liquid phase transition can be used. Such a cold storage member 50 can be constructed by filling a case of a predetermined shape with a latent heat storage material having a low melting point.

As the latent heat storage material used for the cold storage member 50, a material having a melting point corresponding to the holding temperature of the heat and cold insulation part 60 can be selected. Note that the heat storage material used for the cold storage member 50 may be any material that has the property of storing cold heat, and may be, for example, a sensible heat storage material or a chemical heat storage material in addition to the latent heat storage material.

The cold storage member 50 is arranged around the heat and cold insulation portion 60 inside the housing portion 40 . The heat and cold insulation part 60 is preferably arranged closer to the first bottom part 12 of the inner container 10 than the central position of the storage part 40 . As a result, the heat and cold insulation portion 60 is far from the first open end portion 13 of the inner container 10 connected to the heat transfer path along the overlapping region R, so that it is less likely to be affected by the outside.

In the heat and cold insulation device 1 , the cool storage member 50 can be cooled by introducing the liquefied gas from the inlet E _IN of the first connection tubular portion 31 . That is, in the heat and cold insulation device 1 , cold energy can be supplied to the cold storage member 50 via the heat exchange portion V. As a result, in the heat and cold insulation device 1, the heat storage period in the cold storage member 50 can be extended by reducing the melting speed of the heat storage material or refreezing the material.

Therefore, in the heat and cold insulation device 1, the cold insulation effect of the storage portion 40 of the heat insulating container T can be maintained for a longer period of time with a small amount of the cold storage member 50. Therefore, in the heat and cold insulation device 1, the space for arranging the cold storage member 50 in the housing portion 40 of the heat insulating container T can be saved, so that high cold insulation performance can be realized with a lighter and more compact configuration.

[Use of heat and cold insulation device 1]
Since the heat and cold insulation device 1 according to the present embodiment maintains the cold insulation effect for a long period of time, it can be suitably used for applications such as a transportation device for long-distance transportation of refrigerated items that require refrigerated storage. A spacecraft 100 for transporting refrigerated items in outer space and recovering them on the earth will be described as an example of a transportation apparatus using the heat and cold insulation device 1 .

FIG. 4 is a longitudinal sectional view showing a schematic configuration of the spacecraft 100. As shown in FIG. The spacecraft 100 is covered with a thermal protection material 110 that protects the internal space from the heat applied during re-entry into the atmosphere. In the internal space of the spacecraft 100, a loading section 120 on which the heat and cold insulation device 1 is loaded and a cylinder 130 filled with liquid gas are provided.

The cylinder 130 is connected to the loading section 120 and configured to be capable of supplying the liquefied gas to the inlet _EIN of the first connection tubular section 31 of the heat and cold insulation device 1 . Further, the spacecraft 100 is configured such that the cooling gas that has passed through the flow path 30 of the heat and cold insulation device 1 can be discharged from the outlet E _OUT of the second connecting tubular portion 32 to the outside of the thermal protection material 110. .

Examples of refrigerated items that can be recovered from outer space by the spacecraft 100 include experimental samples stored in refrigerated storage on the International Space Station (ISS). Examples of such experimental samples include high-quality protein crystals synthesized under zero gravity in outer space.

[Modified example of heat and cold insulation device 1]
The configuration of the heat and cold insulation device 1 is not limited to the configuration described above. For example, in the heat and cold insulation device 1, the heat exchange section V may not be provided in the housing section 40 of the heat insulating container T. In this case, in the heat and cold insulation device 1 , for example, by providing the inner tubular portion 33 passing through the inside of the accommodating portion 40 of the heat insulating container T in the channel 30 , the accommodating portion 40 can be cooled via the inner tubular portion 33 . .

As an example, as shown in FIGS. 5 and 6, the inner tubular portion 33 can be wound around the central axis C over the entire inner peripheral surface of the inner container 10 in a coil shape. As a result, in the heat insulating container T, the low-temperature fluid passing through the inner tubular portion 33 can cool the entire range along the central axis C in the housing portion 40 .

Furthermore, in the heat and cold insulation device 1, by combining the heat exchange portion V and the inner tubular portion 33, the heat and cold insulation effect can be further improved. That is, in the heat and cold insulation device 1, for example, the fluid in the heat exchange section V shown in FIGS. may be configured to

In addition, in the heat and cold insulation device 1, by increasing the flow path length of the second connection tubular portion 32 for discharging the cooling gas in the overlapping region R, the cold heat of the discharged cooling gas cools the inner container 10 and the outer container 20. Allow to cool. As a result, the heat and cold insulation device 1 can effectively utilize the cold energy remaining in the discharged cooling gas.

In this configuration, for example, the second connecting tubular portion 32 is not provided linearly in the Z-axis direction in the overlapping region R, but is, for example, meandering on both sides in the circumferential direction or wound in a coil shape. etc. As a result, in the heat and cold insulation device 1, the heat and cold insulation effect can be maintained for a longer period of time.

Furthermore, in the heat and cold insulation device 1, for example, the flow path 30 may not include the second connecting tubular portion 32. In this case, as shown in FIG. 7, gaps 34 (34a, 34b, 34c), which are gaps extending along the Z-axis direction formed in the sealing member S at intervals in the circumferential direction, are formed in the channel 30. can be provided as part of

In the heat and cold insulation device 1 shown in FIG. 7 , the cooling gas in the heat exchange portion V and the inner tubular portion 33 can be discharged through the gap portion 34 . Furthermore, in the heat and cold insulation device 1, the sealing member S is not provided, and the entire region other than the first connection tubular portion 31 between the tubular portions 11 and 21 is replaced with the gap portion for discharging the cooling gas in the flow path 30. 34 may be used.

In addition, the heat and cold insulation device 1 may not include the heat exchange portion V and the inner tubular portion 33 . In this case, in the heat and cold insulation device 1, the cooling gas diffuses into the storage section 40 of the heat insulating container T, so that the storage section 40 can be directly cooled. The cooling gas that has diffused into the housing portion 40 of the heat insulating container T can be discharged from the second connecting tubular portion 32 and the like in the same manner as described above.

Further, in the heat and cold insulation device 1, the fluid introduced into the inlet _EIN of the first connection tubular portion 31 may be a low-temperature liquid or gas that does not undergo phase transition to the cooling gas. That is, both the fluid introduced into the inlet E _IN of the first connecting tubular portion 31 and the fluid discharged from the outlet E _OUT of the second connecting tubular portion 32 may be liquid, or both may be liquid. It may be a gas. In this case, since there is substantially no change in volume between the fluid introduced into the inlet E _IN of the first connecting tubular portion 31 and the fluid discharged from the outlet E _OUT of the second connecting tubular portion 32, FIG. , the second connecting tubular portion 32 can have the same configuration as the first connecting tubular portion 31. As shown in FIG.

FIG. 9 is a longitudinal sectional view of a spacecraft 100 using the heat and cold insulation device 1 shown in FIG. This spacecraft 100 is provided with a radiator 140 provided outside the thermal protection material 110 . In this spacecraft 100 , the liquid can be circulated in the circulation path passing through the radiator 140 and the flow path 30 of the heat and cold insulation device 1 .

In the spacecraft 100 shown in FIG. 9 , the liquid that has been radiated into deep space by the radiator 140 and cooled can be introduced into the inlet E _IN of the first connecting tubular portion 31 of the heat and cold insulation device 1 . As a result, the spacecraft 100 can always supply a low-temperature liquid to the flow path 30 of the heat and cold insulation device 1 .

Further, as shown in FIG. 10 , the spacecraft 100 is provided with a heat exchange section 150 , between the flow path 30 of the heat and cold insulation device 1 and the heat exchange section 150 and between the radiator 140 and the heat exchange section 150 . Each liquid circulation path may be provided. This spacecraft 100 can always supply a low-temperature liquid to the channel 30 of the heat and cold insulation device 1 .

Furthermore, in the heat and cold insulation device 1, the storage portion 40 of the heat insulating container T can be held not only at a low temperature but also at an arbitrary temperature. For example, in the heat and cold insulation device 1, when the storage portion 40 of the heat insulating container T is kept at a high temperature, the high temperature fluid is introduced into the _{inlet EIN} of the first connection tubular portion 31, thereby maintaining the heat insulation effect for a long period of time. can be made

Further, in the heat and cold insulation device 1, a heat storage member having a function of storing heat can be used in place of the cold storage member 50 according to the holding temperature of the storage portion 40 of the heat insulating container T. For example, in the heat and cold insulation device 1, when the storage portion 40 of the heat insulating container T is kept at a high temperature, the heat storage member filled with the latent heat storage material having a high melting point is used to reduce the temperature of the storage portion 40 of the heat insulating container T. By keeping the temperature constant, the heat retention effect can be maintained for a long time.

Therefore, by using the heat and cold insulation device 1, it is possible to realize a transport device capable of transporting small freight over a long period of time while controlling the temperature to an arbitrary temperature. For example, the thermal insulation/refrigeration device 1 can be used as a transportation device for long-distance transportation of specimens for medical/life science research (vaccines, bone marrow fluid for transplantation, microorganisms (bacteria, viruses, etc.), etc.).

<Second embodiment>
FIG. 11 is a longitudinal sectional view of a heat and cold insulation device 2 according to a second embodiment of the present invention. FIG. 12 is a cross-sectional view of the heat and cold insulation device 2 taken along line CC in FIG. In this embodiment, with regard to the configuration of the heat and cold insulation device 2, the same components as those of the heat and cold insulation device 1 according to the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted as appropriate.

Unlike the first embodiment, the heat and cold insulation device 2 does not include the heat exchanging portion V and the inner tubular portion 33 in the accommodating portion 40 of the heat insulating container T. As shown in FIG. In the heat and cold insulation device 2, the storage portion 40 of the heat insulating container T is filled with the fluid F, and when the fluid F is introduced into the storage portion 40 from the inflow port E _IN of the first connecting tubular portion 31, the amount of the fluid F is stored. The fluid F in the portion 40 flows out from the outlet E _OUT of the second connecting tubular portion 32 .

In the heat and cold insulation device 2 , the heat insulating effect of the heat insulating container T can suppress changes in the amount of heat possessed by the fluid F in the storage section 40 . That is, in the heat and cold insulation device 2, the heat amount of the fluid F itself stored in the storage part 40 of the heat insulation container T and the heat amount of the fluid F stored in the storage part 40 of the heat insulation container T are changed at an arbitrary timing. can be used.

The heat and cold insulation device 2 can be used, for example, to keep hot liquid generated by utilizing exhaust heat during steady operation of an automobile. The hot liquid supplied from the heat and cold insulation device 2 can be used, for example, to raise the temperature of the engine when starting the automobile. As a result, it is possible to suppress the generation of NO _X when the automobile is started.

Also, the high-temperature liquid supplied from the heat and cold insulation device 2 can be used to raise the temperature of the battery when the electric vehicle is started, thereby suppressing deterioration in battery performance. In addition, the hot liquid supplied by the heat and cold insulation device 2 can also be used to defrost the windshield.

Furthermore, the heat and cold insulation device 2 can be used as a storage tank of a device that supplies hot water or hot water, such as a hot water pot or a natural refrigerant heat pump type electric water heater. As a result, power consumption for maintaining the temperature of hot water or warm water can be saved, and hot water or warm water can be supplied immediately after starting.

Similarly, the heat and cold insulation device 2 can also be used as a storage tank for, for example, a water server that supplies cold water or a beverage server that supplies cold beverages. As a result, power consumption for keeping cold water and cold beverages at a low temperature can be saved, and cold water and cold beverages can be supplied immediately after starting.

Note that the heat and cold insulation device 2 may have a configuration other than the above, if necessary. For example, the heat and cold insulation device 2 may be provided with a heater for supplying heat to the fluid F inside the heat insulating container T. In this configuration, for example, electric power can be supplied from the outside to the heater in the heat insulating container T through the wiring provided in the overlapping region R.

In addition, in the heat and cold insulation device 2, a heat storage member filled with latent heat storage material may be provided in the accommodating portion 40 in order to enhance the heat storage effect or the cold storage effect. When a plurality of heat storage members are provided in the housing portion 40, it is preferable to form a gap through which the fluid F can flow between the heat storage members in order to increase the heat transfer efficiency between the fluid F and the heat storage members. As an example, as shown in FIG. 13 , in the heat and cold insulation device 2 , a plurality of capsule-shaped heat storage members 50 a that can flow together with the fluid F can be dispersed in the housing portion 40 . In this case, a mesh member M such as a wire mesh is used as a partition to prevent the capsule-shaped heat storage member 50a from being discharged from the outflow port _EOUT of the second connection tubular portion 32 or from blocking the outflow port _EOUT . is preferably provided. Furthermore, in this case, the first connecting tubular portion 31 is positioned within the accommodating portion 40 adjacent to the first bottom portion 12 of the inner container 10 ( For example, it is preferable to extend to a position beyond the superimposed region R).

<Other embodiments>
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and can of course be modified in various ways. For example, in the above-described embodiment, the heat-insulating container T has a columnar shape, but it is not limited to this. Specifically, the heat-insulating container T may be, for example, rectangular, polygonal, or elliptical.

REFERENCE SIGNS LIST 1... Thermal and cold insulating device 10... Inner container 11... First cylindrical part 12... First bottom part 13... First open end part 14... First vacuum layer 20... Outer container 21... Second cylindrical part 22... Second bottom part 23... Second open end 24... Second vacuum layer 30... Flow path 31... First connection tubular part 32... Second connection tubular part 40... Storage part 50... Cold storage member 60... Thermal insulation cold storage part T... Thermal insulation container R... Superimposed region S... Sealing member V... Heat exchange part

Claims (6)

Equipped with a heat-insulating container composed of an inner container and an outer container, and a flow path through which a fluid can flow,
The inner container includes a first cylindrical portion extending along one axis, a first bottom closing the first cylindrical portion from a first direction along the one axis, the first cylindrical portion and the first a first vacuum layer wrapped in series across the bottom;
The outer container includes a second tubular portion that extends along the one axis and forms an overlapping region that overlaps with the outside of the first tubular portion, and a second tubular portion that extends in a direction opposite to the first direction. Having a second bottom that closes from two directions, and a second vacuum layer that is continuously enclosed over the second cylindrical portion and the second bottom,
The heat and cold insulation device, wherein the flow path includes at least one connecting tubular portion that connects the inside and the outside of the heat insulating container between the first tubular portion and the second tubular portion. The heat and cold insulation device according to claim 1,
The heat and cold insulation device, wherein a dimension of the overlapping region along the one axis is 70% or more of a dimension of the first tubular portion and the second tubular portion along the one axis. The heat and cold insulation device according to claim 1 or 2,
the channel includes a plurality of connecting tubular portions;
The heat and cold insulation device further comprises a sealing member that seals around the plurality of connecting tubular portions between the first tubular portion and the second tubular portion. The heat and cold insulation device according to claim 3,
A heat and cold insulation device, further comprising a heat exchanging portion arranged inside the heat insulating container and connected to the plurality of connecting tubular portions. The heat and cold insulation device according to claim 3,
The heat-retaining/refrigerating device, wherein the channel further includes an inner tubular portion arranged inside the heat-insulating container and connected to the plurality of connecting tubular portions. The heat and cold insulation device according to any one of claims 1 to 5,
A heat and cold insulation device, further comprising: a heat and cold insulation section capable of accommodating an object; and a heat storage member or cold storage member arranged around the heat and cold insulation section.

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