JPH07105924A - Heat insulated vacuum vessel - Google Patents

Abstract

PURPOSE:To remove necessity for use of any complicated expansion mechanism as conventional by enhancing the heat insulating performance through lessening of thermal loss to be made from a membrane installed at the opening of a heat insulated vacuum vessel and also lessening of the internal surface area, shortening the depth of the inner vessel from its opening, and lessening the elongation due to thermal expansion of the inner vessel. CONSTITUTION:A vessel is formed in a rectangular parallelopiped in which an opening 5 is provided in the side face on that side of vessel where the depth becomes the shortest, wherein the opening 5 is formed with a smaller area at a part of that side face so that the thermal loss from a membrane 6 furnished at the opening 5 is lessened. Therein the accommodation of a group of storage batteries into the vessel body 3 is made through such procedures as dividing the group of batteries into minimum units, inserting each through the opening 5, and feeding it longitudinally and transversely within the vessel body 3, which should be done in cycles.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum heat insulation container used as a heat insulation container for accommodating a high temperature type storage battery group.

[0002]

2. Description of the Related Art A vacuum heat insulation container used as a heat insulation container for accommodating a high temperature type storage battery group is required to have high-order heat insulation performance. Therefore, as a heat insulating wall, there is known a structure having inner and outer double walls, in which inorganic powder heat insulating material such as diatomaceous earth or inorganic fiber heat insulating material such as glass fiber is filled, and further the inside is evacuated. .

Further, when accommodating a storage battery group in a container,
Since the storage battery group to be stored is a heavy item, the entire surface of the container has an opening to facilitate storage, and the shape of the container is set so that the opening area is minimized and the length in the depth direction from the opening is increased. Generally, it is set to an elongated rectangular parallelepiped shape. FIG. 9 shows the structure of a conventional vacuum heat insulating container having an elongated rectangular parallelepiped shape in which the opening of the entire front surface is made small and the length in the depth direction is made long, and (a) is a perspective view showing the whole.
(B) is the longitudinal cross-sectional view. In FIG. 9, reference numeral 21 is a container body, and an outer container 22 having one opening and an outer container 2
The inner container 2 housed in the second container 2 and opening on the same side as the outer container 22
3 and a membrane 24 provided between the opening-side ends of the outer container 22 and the inner container 23 to form a heat insulating space inside, and the heat insulating space is filled with an inorganic heat insulating material 25 and evacuated. Together with the inner and outer containers 23,
An opening 26 of the container body 21 is formed on the opening side of 22.

In the case of an elongated rectangular parallelepiped vacuum heat insulating container having a small opening 26 and a large length in the depth direction as shown in FIG. 9, a high temperature type storage battery group housed therein is in operation, Since the inner container is thermally expanded and an excessive force is applied to the membrane 24 to cause a problem of breakage during repeated use, a structure in which the membrane 24 and the inner container 23 are provided with a telescopic mechanism such as a bellows is known. 10A and 10B show the structure of a vacuum heat insulating container provided with such an expansion / contraction mechanism. FIG. 10A is a sectional view of a main part of an example thereof, and FIG. 10B is a sectional view of a main part of another example. In FIG. 10A, the expansion / contraction mechanism 27 is the membrane 24.
10 (b), the expansion / contraction mechanism 27 is attached to the inner container 23.

[0005]

In the conventional elongated rectangular parallelepiped shape having an opening on the entire front surface as described above, when the container becomes large, the expansion and contraction mechanism becomes large and complicated, and the reliability of the container decreases. , The cost will increase. In addition, such a shape has a large ratio of the inner surface area to the inner volume, which means that a large amount of metal material and inorganic heat insulating material that constitute the heat insulating wall are required, resulting in increase in weight and cost, and heat insulation. There are problems such as an increase in exhaust time due to an increase in the space forming the wall, an increase in the welding line due to an increase in the surface area of the metal material, a decrease in the reliability of the container, a decrease in the heat insulation performance, etc. It became larger as it became larger.

The present invention solves the above problem and requires a large and complicated expansion / contraction mechanism that can reduce the heat loss from the membrane without the conventional elongated rectangular parallelepiped shape having an opening on the entire front surface. It is an object of the present invention to provide a vacuum heat insulation container that does not.

[0007]

In order to solve the above-mentioned problems, the vacuum heat-insulating container of the present invention has a substantially cubical container shape or an opening provided on one surface of the container with a depth length from this opening. With a shape disposed on one surface of the shortest side, the size of the opening provided on the one surface of the container is configured to be small within the one surface of the container,
Further, the container is provided with a transport mechanism for vertically and horizontally feeding the minimum unit of the stored items fed through an opening smaller than the one surface provided on one surface of the container.

[0008]

With the above-described structure, the container has a substantially cubic shape, or the opening provided on one surface of the container is arranged on one surface on the side having the shortest depth from the opening. Depth length can be shortened. Therefore, the amount of expansion due to the thermal expansion of the inner container in the depth direction can be reduced, and the conventional complicated expansion and contraction mechanism is not required. Further, since the inner surface area can be made smaller than that of the conventional elongated rectangular parallelepiped shape having the entire front face as an opening, the heat insulating space to be evacuated becomes smaller and the evacuation time becomes shorter. Further, since the size of the opening provided on one surface of the container is reduced within the one surface of the container, heat loss from the membrane provided between the inner and outer double walls of the small opening can be reduced, and the inner surface area can be reduced. In addition, the heat insulation performance can be improved.
Furthermore, since a mechanism for transporting the smallest unit of the stored items is provided in the container, even for heavy objects such as storage battery groups, the smallest units are sequentially fed through the small openings and fed vertically and horizontally to accumulate. As a result, the whole can be easily stored.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 (a) and 1 (b) are a perspective view and a cross-sectional view showing an entire vacuum heat insulating container according to an embodiment of the present invention. In Figure 1, 1 is an outer container, 2 is the inner container, these in depth l _1, width l _2, the height l ₃ the container main body 3 of approximately equal substantially cubic shape _{(l 1 ≒ l 2 ≒ l} 3) And the inorganic heat insulating material 4 is filled between the double walls formed by the inner and outer containers 2, 1. The opening 5 is formed in a small area on a part of one surface of the container body 3. The space between the double walls in the opening 5 is sealed by the membrane 6,
The double wall space is evacuated to form a heat insulating wall.

2 (a) and 2 (b) are a perspective view and a cross-sectional view showing the whole vacuum heat insulating container of another embodiment of the present invention, which is composed of the same members as in FIG. However, Figure 2
In the case of the container shape, the opening 5 is
Container body 3 having a rectangular parallelepiped shape that is long in the width direction and is arranged on one surface on which the length l ₁ in the depth direction from is the shortest.
(L ₁ <l ₂ , l ₃ ). Also the opening 5
Is formed on a part of the one surface of the rectangular parallelepiped container body 3 having a small area equivalent to the opening of FIG.

3 (a) and 3 (b) are a plan view and a front view of the transfer device for explaining the transfer mechanism in the vacuum heat insulating container of the present invention. In FIG. 3, reference numeral 7 denotes a gantry, and two guide rails 8 extending in the depth direction from the opening (5 in FIGS. 1 and 2) are provided on the surface of the gantry 7, and along the guide rails 8. A guide rail 9 is provided at a position where the stored contents sent in are accommodated in the container and is connected to the guide rail 8 from this position and extends laterally in a direction away from the opening. Further, the gantry 7 is pivotally supported on the base frame 10 via a pin mechanism 11 at the end on the side away from the opening, and the end of the gantry 7 on the opening side is a cam provided on the base frame 10. The pedestal supported by the mechanism 12 can be switched between a horizontal posture and an inclined posture in which the pedestal is inclined higher toward the opening depending on the rotational position of the cam mechanism 12.

FIGS. 4 (a) and 4 (b) are a front view and a cross-sectional side view for explaining a minimum unit of a high temperature type storage battery group, which is an example of an item housed in a vacuum heat insulating container. In FIG. 4, 13 is a unit case that is flatly formed in a shape that is long in the depth direction from the opening (5 in FIGS. 1 and 2) of the vacuum heat insulating container, and the long side length in the flat direction is vacuum heat insulating. Corresponding to the depth from the opening of the container, it is configured to fit within it, and the short side length orthogonal to the flat direction is such that it can pass through the opening of the vacuum insulation container. The inside of the storage battery 14 is divided into upper and lower stages, and the storage batteries 14 are housed in a line in a flat direction. Numerals 15 are free rollers provided at the four corners of the bottom of the unit case 13, and the space between the free rollers 15 arranged in the flat direction of the unit case 13 is a guide rail in the lateral direction provided on the surface of the mount 7. The distance between the free rollers 15 arranged in the direction orthogonal to the flat direction of the unit case 13 is equal to the distance between the guide rails 8 in the vertical direction (depth direction) provided on the surface of the mount 7. Equal to the interval. Also, on the end face of the unit case 13 in the flat direction,
The unit case 1 which is adjacent to each other by the end faces in this flat direction
Electrical connection fittings 16 that can be connected to the storage battery 14 inside the battery 3 are provided.

Here, the storage of the storage battery in the vacuum heat insulating container is performed as follows. First, one of the unit cases 13, which is the smallest unit of the storage battery group, is fed through the opening (5 in FIGS. 1 and 2) of the container with its flat direction aligned with the depth direction of the vacuum heat insulating container. At this time, the free roller 15 of the unit case 13 is placed on the vertical guide rail 8 and is inserted until the whole is housed in the vacuum heat insulating container. Next, when the cam mechanism 12 of the base frame 10 is operated to swing the gantry via the pin mechanism 9, the gantry end portion on the opening side rises. Therefore, the free roller 15 of the unit case 13 automatically transfers to the lateral guide rail 9,
The unit case 13 moves to the end of the gantry on the side opposite to the opening. By repeating this operation, a storage battery group including a plurality of unit cases 13 as shown in FIG. 5 can be stored in one vacuum heat insulating container.

Next, specific examples will be described. 6 (a) and 6 (b) show a perspective view and a cross-sectional view of the first embodiment when the container shape is formed into a substantially cubic shape, and the depth l
₁ = 1.63 m, a width l ₂ = 1.48m, a height l ₃ = 1.
48 m, the size of the opening formed in a small area on a part of the one surface on the depth direction side of the container was 0.5 m x 1.4 m, and the heat insulating thickness including the lid 17 of the opening was 0.04 m. .

FIGS. 7 (a) and 7 (b) are perspective views of Embodiment 2 in which the container shape is such that the opening provided on one surface of the container is arranged on one surface on the side having the shortest depth length. And a cross-sectional view showing a depth l ₁ = 1.28 m and a width l ₂ =
The height of the opening is 1.88 m, the height is l ₃ = 1.48 m, the size of the opening formed in a small area on one side of the container in the depth direction is 0.5 m × 1.4 m, and the opening lid 17 Including the above, the heat insulation thickness was set to 0.04 m.

FIGS. 8 (a) and 8 (b) are a perspective view and a cross-sectional view of Comparative Example 1 in which the container shape is a slender rectangular parallelepiped shape of a conventional example, and depth l ₁ = 3.08 m and width l ₂ =
1.08 m, height l ₃ = 1.08 m, and an opening provided on the entire one surface on the depth direction side of the container is 1.0 m × 1.0 m
The heat insulating thickness including the lid 17 of the opening was set to 0.04 m.

In Examples 1 and 2, and Comparative Example 1, all specifications were the same except for the shape. That is, the inner container, the outer container, and the membrane that compose the double wall are made of the same material and have the same plate thickness of stainless steel, and the space inside the double wall is filled with rock wool compacted to a predetermined density Evacuated to vacuum. The lid for closing the opening was an atmospheric pressure insulating wall made of ceramic wool as a core material. At this time, the internal volume, the internal surface area, the depth length, the heat insulating space, and the perimeter of the membrane of Examples 1 and 2 and Comparative Example 1 were as shown in (Table 1). In Examples 1 and 2, the same transport mechanism as that shown in FIG. 3 was provided.

[0018]

[Table 1]

With respect to Examples 1 and 2 and Comparative Example 1 configured as described above, the time required to exhaust to a predetermined pressure and the internal temperature were 350 ° C. in order to confirm the action and effect.
Table 2 shows the results of measurement of the amount of heat dissipated in the above case and the amount of strain generated in the membrane due to the thermal expansion of the inner container at that time.

[0020]

[Table 2]

The following can be seen from the above results. (1) Exhaust time of Examples 1 and 2 is about 4 as compared with Comparative Example 1.
It decreased by 0%. This is due to the reduction of the heat insulating space and also the reduction of the exhaust path length.

(2) In Examples 1 and 2, the amount of heat radiated was reduced by about 10% as compared with Comparative Example 1. This is because the inner surface area was reduced and the perimeter of the membrane was reduced. (3) The reduction in the amount of strain in Examples 1 and 2 is due to the reduction in the depth length. Therefore, Comparative Example 1 requires a large and complicated expansion and contraction mechanism. It can be seen that a simple expansion mechanism is enough.

[0023]

As described above, according to the present invention, since the container shape is a substantially cubic shape or the opening provided on one surface of the container is arranged on one surface on the side having the shortest depth length, Unlike the conventional elongated rectangular parallelepiped shape with the entire front surface as an opening, the length of the container in the depth direction can be shortened, so the amount of expansion due to thermal expansion of the inner container in the depth direction is reduced, and a complicated expansion and contraction mechanism. Does not need Further, as compared with the conventional elongated rectangular parallelepiped shape, the inner surface area can be made smaller, so that the heat insulating space to be evacuated becomes smaller and the evacuation time becomes shorter. Moreover, since the opening is small, the heat loss from the membrane can be reduced and the inner surface area can be reduced, so that the heat insulating performance can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view and a cross-sectional view showing an entire vacuum heat insulating container according to an embodiment of the present invention.

FIG. 2 is a perspective view and a cross-sectional view showing an entire vacuum heat insulating container according to another embodiment of the present invention.

3A and 3B are a plan view and a front view of a transfer device for explaining an example of a stored item transfer mechanism in the vacuum heat insulating container of the present invention.

FIG. 4 is a front view and a cross-sectional side view showing a minimum unit of a high temperature type storage battery group, which is an example of a storage item in the vacuum heat insulating container of the present invention.

FIG. 5 is a diagram illustrating a storage battery group per vacuum heat insulating container.

6A and 6B are a perspective view and a cross-sectional view of the vacuum heat insulating container according to the first embodiment when the container has a substantially cubic shape.

FIG. 7 is a perspective view of the vacuum heat insulating container according to the second embodiment of the present invention in which the container shape of the vacuum heat insulating container is configured such that the opening provided on one surface of the container is arranged on one surface on the side having the shortest depth length; FIG.

8A and 8B are a perspective view and a cross-sectional view in Comparative Example 1 when the vacuum heat insulating container is formed in a conventional elongated rectangular parallelepiped shape having an opening on the entire front surface.

9A and 9B are a perspective view and a vertical cross-sectional view of an elongated rectangular parallelepiped vacuum heat insulating container in which the entire front surface is an opening and the depth is long in a conventional example.

FIG. 10 is a cross-sectional view of a main part showing an example of a telescopic mechanism in a conventional vacuum heat insulating container and a cross-sectional view of the main part showing another example.

[Explanation of symbols]

 1 Outer Container 2 Inner Container 3 Container Main Body 4 Inorganic Heat Insulating Material 5 Opening 6 Membrane 7 Stand 8 Guide Rail 9 Guide Rail 10 Base Frame 11 Pin Mechanism 12 Cam Mechanism 13 Unit Case 14 Storage Battery 15 Flexible Roller 16 Electrical Connection Metal Fitting 17 lid

Claims (1)

[Claims] 1. A vacuum heat insulating container having a heat insulating wall in which a space between inner and outer double walls is evacuated, wherein the container has a substantially cubic shape or an opening provided on one surface of the container has a minimum length in a depth direction. Side surface, the size of the opening provided on the one surface of the container is configured to be small within the one surface of the container, and the minimum unit of stored items in the container is vertically or horizontally fed. A vacuum heat insulation container provided with a transfer mechanism for