JP3090133B2 - Metal vacuum insulation container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal vacuum container used for an electric pot or a water bottle.

[0002]

2. Description of the Related Art As shown in FIG. 24, the inner container 91 and the outer container 92 have a double structure with a gap S therebetween as shown in FIG. There is a bottle 90 with a vacuum. The outer container 92 of the bottle 90 is formed by welding a cylindrical member 92a and a disk-shaped bottom member 92b. Outer container 9
A cylindrical inner container 91 with a bottom is accommodated in the inside of the container 2, and a gap is defined therebetween. In the bottle 90, in order to evacuate the gap, a concave 93
Is formed, and an exhaust port which is opened at the time of evacuation is formed inside the concave portion 93. This exhaust port is sealed in the concave portion 93 by the sealing material 95 after evacuation.

[0003] Sealing of the exhaust port is performed by one of the following two methods. Using a solid brazing material made of glass or the like as the sealing material 95,
When sealed at a relatively low temperature. For example, the brazing material is formed in a columnar solid, and the solid brazing material is temporarily fixed in the recess. After evacuation, the brazing material is heated and melted, and the exhaust port is sealed with the melted brazing material.

[0004] As the sealing material 95, a cover plate for covering the exhaust port in a state of being housed in the recess is used, and this cover plate is brazed at a relatively high temperature with a metal brazing material to seal the exhaust port. To stop. For example, the above-mentioned cover plate is used when a fluorine resin coating is applied to the inner surface of the bottle. That is, when the fluororesin is fired, the bottle is heated to a high temperature at which the brazing material made of glass melts, for example, to 400 degrees Celsius. Since this heating step is performed after the bottle is evacuated, when the vacuum is applied, the above-described cover plate and a metal brazing material are used, and the surroundings of the cover plate are heated to a high temperature, for example, 1000 degrees. We are brazing with brazing material. However, the necessity of such a cover plate tends to increase the number of parts for sealing and increase the cost. Further, since the above-mentioned cover plate needs an area for brazing while covering the exhaust port, it requires a larger space than the brazing material made of glass described above.

[0005] In any of the above-mentioned methods, the above-mentioned concave portion is provided exclusively for the exhaust port. The cover plate of the method is also a dedicated member for sealing the exhaust port. For this reason, there is a tendency to take a place to seal the exhaust port, and particularly when a cover plate is used, the tendency to take a place is further strengthened. There is a request to do.

There is also a demand to reduce the cost for sealing. By the way, if the vacuum in the gap between the bottles 90 is not sufficiently achieved, sufficient heat retaining performance cannot be obtained.
In such a case, so-called regeneration may be performed in which the bottle whose vacuum has not been sufficiently achieved is evacuated again.
For this reason, as shown in the bottom view of FIG. 25, a plurality of, for example, three concave portions 93 are provided (for example, see Japanese Utility Model Registration No. 2577941). An exhaust port is formed in one of the concave portions 93 when vacuum is first applied, and is sealed with a sealing material 95. The remaining two concave portions 93 are spare concave portions for forming exhaust ports during regeneration.

However, since a plurality of exclusive concave portions 93 for the exhaust port are separately provided, a large space is required, but it may be difficult to secure such a large space. In particular, when the exhaust port is sealed by the above-described method, the concave portion itself may be large, and it is more difficult to provide a plurality of concave portions. There is also a demand to reduce the cost for reproduction. On the other hand, regeneration work is a rare task, so even if the cost for regeneration could be reduced, the overall cost would rise if the cost of regeneration, which accounts for the majority of the majority, was unnecessary but increased. On the contrary, it is assumed that it rises. For example, the above-mentioned spare recesses are provided exclusively for recycling, but are wasteful for bottles that do not need to be recycled. Thus, it is desired to reduce the cost for reproduction while reducing the total cost.

[0008] Even if reproduction can be performed inexpensively without taking up space, it is desirable that reproduction can be surely performed. Therefore,
An object of the present invention is to solve the above-mentioned technical problems, and to save a space for an exhaust port for creating a vacuum and to seal it inexpensively, and furthermore, a metal vacuum that can be regenerated and re-reproduced. It is to provide a thermal insulation container.

[0009]

[0010]

[0011]

[0012]

[0013]

[0014]

[0015]

[0016]

[0017]

According to a first aspect of the present invention, there is provided a metal vacuum insulated container having a metal inner container and an outer container having a double structure with a gap therebetween, wherein the gap is evacuated to a vacuum. The exhaust port is sealed with a sealing material, and the sealing material and the exhaust port are provided in a concave portion recessed from the surface to the gap side, wherein the concave portion is formed by stacking a plurality of sealing materials. The deepest part of the recess is formed with an exhaust port, covered with a sealing material, and a space for forming a regeneration exhaust port is formed in the remaining recess covered with the sealing material. It is characterized by doing.

According to the first aspect of the present invention, for example,
When the gap is first evacuated, an exhaust port can be formed at the deepest portion of the recess, and the exhaust port can be sealed with a sealing material held in the recess. Further, in the case of regenerating, a regenerating exhaust port is formed by penetrating the sealing material in the concave portion, and the regenerating sealing material is overlapped on the regenerating exhaust port formed sealing material. By holding, the regeneration exhaust port can be sealed.

Since the recess can hold a plurality of sealing materials in an overlapping manner, it can be regenerated a plurality of times without taking up space. In addition, since there is no need to provide a separate space for the regeneration exhaust port, it is possible to reduce the cost of separately forming the concave portion and the increase in the operation cost caused when separately providing the concave portion. Here, the sealing material may be made of a solid brazing material such as glass, or may be a combination of a metal brazing material and a cover plate brazed to the peripheral portion of the exhaust port by the brazing material. For example, the depth of the recess may be a dimension when a plurality of fixed brazing materials are stacked or a dimension when a plurality of cover plates are stacked.

[0020]

[0021]

[0022]

[0023] The metal vacuum insulated container according to claim 2 is
2. The metal vacuum insulation container according to claim 1 , wherein the concave portion is formed in multiple stages, and an exhaust port is formed at a deepest portion of the concave portion, and a regeneration exhaust port is sealed at a shallow portion of the concave portion. Is formed, and the sealing material covers the deepest portion of the concave portion except for the shallow portion of the concave portion.

According to the invention described in claim 2 , according to claim 1,
In addition to the operation of the invention described in the above, for example, a regeneration exhaust port is formed in a shallow portion of the concave portion, and after the evacuation, the regeneration exhaust port is securely sealed with a regeneration sealing material held in the shallow portion of the concave portion. be able to. Also, the shallow portion of the recess formed in multiple stages is wider than the deeper portion, so, for example, as a sealing material for regeneration, a regenerating cover plate brazed with a brazing material, and a solid brazing material. Select and use. Further, the regeneration exhaust port may be formed in a shallow portion of the concave portion, or may be formed through a sealing material. As a result, it is possible to easily work according to the convenience at the time of reproduction.

Further, since a plurality of exhaust ports for evacuating can be provided in the concave portions, a space is not required as compared with a case where concave portions separately partitioned for each exhaust port are provided.
In addition, since it is not necessary to provide a separate space for the regenerating exhaust port, for example, it is possible to eliminate the cost of forming the separate concave portions and the increase in the operation cost caused when providing the separate concave portions.

Here, the sealing material may be made of, for example, a solid brazing material made of glass, or a combination of a metal brazing material and a cover plate brazed to a peripheral portion of an exhaust port by the brazing material. May be. According to a third aspect of the present invention , in the metal vacuum insulation container according to the second aspect , the sealing material melts from a solid state to close the exhaust port to seal the exhaust port. The regeneration exhaust port is formed in a shallow portion of the concave portion, and is covered with a regeneration cover plate. The regeneration cover plate covers the regeneration exhaust port and the sealing material, and a brazing material is formed in the shallow portion of the concave portion. The regeneration exhaust port is sealed by brazing.

According to the invention of claim 3 , according to claim 2,
In addition to the operation of the invention described in the above, the regenerating cover plate covers the regenerating exhaust port and the sealing material, so that the sealing material and the exhaust port can be sealed together with the regenerating exhaust port. Can be. Also, since the regenerating cover plate is brazed to the shallow portion of the concave portion, even on the sealing material after melting,
Work is easy as a result of easy and reliable brazing.

[0028] The metal vacuum insulated container according to claim 4 comprises:
The metal vacuum insulation container according to claim 2 , wherein the sealing material is a brazing material that seals the exhaust port by closing the exhaust port by melting from a solid state, and the regeneration exhaust port is a sealing material. Is formed in the vicinity of, and is covered with a regenerating sealing material. The regenerating sealing material is held in a shallow portion of the concave portion and melts from a solid state, thereby covering the regenerating exhaust port and the sealing material and regenerating exhaust gas. It is characterized by being a brazing material for sealing the mouth.

According to the invention set forth in claim 4 , according to claim 2,
In addition to the operation of the invention described in the above, the regeneration sealing material covers the regeneration exhaust port and the sealing material, so that the sealing material and the exhaust port can be sealed together with the regeneration exhaust port, so that the sealing is securely performed. be able to. Further, since the sealing material for regeneration is held in the shallow portion of the concave portion, it can be held easily and securely even on the sealing material after melting, and the work is easy.

Here, the vicinity of the sealing material in which the regeneration exhaust port is formed includes on and near the sealing material .

[0031]

[0032]

[0033]

[0034]

[0035]

[0036]

[0037]

[0038]

Effects of the Invention According to the invention described in claim 1, the recess, can be held by a plurality of stacked sealing material, it can be reproduced reliably several times without taking place. In addition, it is possible to reduce the cost of forming the concave portion and the increase in the operating cost caused when the concave portion is separately provided, and to reduce the entire cost including the case where the reproduction is not performed.

[0039]

According to the second aspect of the present invention, the concave portion is formed in multiple stages, and the regeneration exhaust port is provided in the shallow portion of the concave portion, and the exhaust port is securely sealed with the sealing material held in the shallow portion of the concave portion. Can be stopped. Since a plurality of exhaust ports are provided in the concave portion, the space is not required, and the overall cost including the case where regeneration is not performed is eliminated by eliminating the increase in the cost of forming the concave portion and the work cost caused when separately provided. Can be reduced.

According to the invention described in claim 3 , according to claim 2
In addition to the effects of the invention described in the above, the regenerating cover plate covers the regenerating exhaust port and the sealing material, can be securely sealed, and can be easily and reliably brazed to the shallow portion of the concave portion. As a result, work is easy. According to the invention described in claim 4 , in addition to the effect of the invention described in claim 2 , the sealing material for regenerating the brazing material covers the regeneration exhaust port and the sealing material and securely seals. be able to. Further, the sealing material for reproduction can be easily and reliably held in the shallow portion of the concave portion, and is easy to work.

[0042]

[0043]

[0044]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a front sectional view of an electric pot according to one embodiment of the present invention. The electric pot 1 includes a container main body 10 as a metal vacuum insulation container capable of storing a content liquid therein, an outer body 20 surrounding the container main body 10, and an upper part of the outer body 20 attached to the container main body 10. And a cover 21 that covers the upper opening 10a. An electric pump 2 that pours out the liquid in the container body 10 inside the exterior body 20 and outside the container body 10.
2 and the like, and a heater 31 and a temperature sensor 32 for increasing or maintaining the temperature of the content liquid in the container body 10 to a predetermined temperature.

The heater 31 is formed in a ring shape and includes a plurality of mounting members 33 (see FIG. 2) screwed to the bottom surface 12a of the outer container 12 of the container body 10, an annular pressing plate 34, and a spring 35. , Bottom portion 1 of inner container 11 of container body 10
It is attached to the lower surface of 1a by being pressed and biased. The temperature sensor 32 is attached to the center of the lower surface of the bottom surface 11a of the inner container 11.

The discharge mechanism includes an outlet pipe 23 connected to the lower surface of the bottom portion 11a of the inner container 11, and a plurality of pipes 24-27.
The liquid in the container body 10 can be pumped out by the electric pump 22 through the outlet pipe 28 provided in the beak portion 20a on the upper part of the outer package 20. The container body 10 has a stainless steel inner container 11 and an outer container 12 having a double structure with a gap S therebetween, and the gap S is evacuated.

The inner container 11 is formed in a cylindrical shape with a bottom, and has a stepped bottom portion 11a having a high central portion and a low peripheral portion.
And a cylindrical side portion 11b rising from the outer peripheral edge of the bottom portion 11a. The side surface portion 11b has a flange portion 11d whose diameter is once narrowed at a neck portion 11c near the upper end thereof, is formed to have a large diameter at an upper end portion, and extends radially outward while defining an opening 10a. I have. This side part 11
The flange 11d of FIG. 2B and the flange 12d at the upper end of the outer container 12 are welded.

The outer container 12 has the above-described flange 1 at the upper end.
It has a cylindrical side portion 12b including 2d and surrounding the outer peripheral surface of the side portion 11b of the inner container 11, and an annular bottom portion 12a at the lower end of the side portion 12b and extending inward in the radial direction. A portion near the inner periphery of the bottom portion 12a extends upward, and a tip of the bottom portion 12a is
Is welded to the lower surface of the periphery.

As described above, the container body 10 has a double structure at the portion along the outer peripheral surface and at the portion near the outer periphery of the bottom surface, and the portion near the center of the bottom surface does not have the double structure. . In addition, the container main body 10 includes a sealing mechanism 40 for evacuating and sealing the gap between the portions having the double structure described above. Also, a getter (not shown) for increasing the degree of vacuum in the gap is provided in the gap.

In the present invention, the above-mentioned sealing mechanism 40 is novel. The details will be described below. The sealing mechanism 40
As shown in FIG. 3, it is provided on the lower surface of the bottom portion 12a of the outer container 12 of the container body 10. The sealing mechanism 40 includes an exhaust port 41 for evacuating the gap S, a cover plate 42 and a brazing material 43 as a sealing material for sealing the exhaust port 41.
And a holding recess 45 for holding the sealing material. An exhaust port 41 is formed in the holding recess 45, and the above-described cover plate 42 that covers the exhaust port 41, and a brazing material 43 that brazes the cover plate 42 to the periphery of the exhaust port 41 of the holding recess 45. And are housed.

The holding recess 45 is formed on the bottom 1 of the outer container 12.
It is formed on the lower surface of 2a and is recessed toward the gap S, and is open downward in the state shown in FIGS. The holding recess 45 has an oblong bottom surface 45a and a side surface 45b rising from the periphery of the bottom surface 45a. An elliptical exhaust port 41 is provided at the center of the bottom surface 45a. The holding recess 45 is formed so as to be able to house therein a cover plate 42 that covers the exhaust port 41, and constitutes a holding unit that holds the cover plate 42 in a direction along the bottom surface 45a.

The cover plate 42 has an oval plate portion 42a including a surface to be brazed, and a truncated conical portion 42b at the center of the plate portion 42a.
And the depression 42b are integrally formed. Cover plate 4
The second depressed portion 42b is depressed so as to protrude into the gap while being fitted into the exhaust port 41. Cover plate 42
Is formed by a convex surface 42c protruding toward the gap side and a concave surface 42d formed on the back side of the convex surface 42c. The depressed portion 42b is thicker at a portion closer to the plate portion 42a and thinner toward the protruding tip side. Thereby, when the plurality of cover plates 42 are overlapped, the convex surface 42c of the cover plate 42 adjacent to the concave surface 42d can be accommodated in the concave surface 42d so that the concave portions 42b can be stacked with the same orientation, and the adjacent cover plates 42 can be stacked. Can be made to follow each other. As a result, the plurality of cover plates 42 can be overlapped without being bulky, and the space for storage can be reduced.

The cover plate 42 is made of a material that can be brazed. The cover plate 42 is formed in a size that can cover both the exhaust port 41 and the brazing material 43 applied in a ring shape around the exhaust port 41. The cover plate 42 is brazed to the holding concave portion 45 and the brazing material 43 on the surface of the plate portion 42a on the side where the convex surface 42c is located. The brazing material 43 is a metal member in a gel or sol shape, is formed in a ring shape, and is applied to the bottom surface 45 a of the holding recess 45. The brazing material 43 is heated during the evacuation to be in a molten state,
The cover plate 42 and the bottom surface 45a are brazed and joined in an airtight state.

At the time of evacuation, the container body 10 is in an inverted state. The above-mentioned brazing material 43 is placed on the bottom surface 4 of the holding recess 45.
5a is applied in a ring shape. The convex surface 42c of the cover plate 42 is fitted into the exhaust port 41, and the cover plate 4 is placed on the brazing material 43.
2 is placed. In this state, the container body 10 is evacuated in the vacuum heating furnace, and the inside of the gap S is also evacuated through the exhaust port 41. Then, after evacuation, the brazing material 43 melted by heating brazes the cover plate 42 and the holding concave portion 45, and the exhaust port 41 is sealed. Note that a known method can be used as the method for applying a vacuum here.

When the degree of vacuum of the container body 10 cannot be sufficiently obtained, regeneration is performed in which the gap in the container body 10 is again evacuated. In the sealing mechanism 40 of the present embodiment, as shown in FIG. 5, the regeneration exhaust port 51 is formed in a space defined by the concave surface 42d of the depression 42b of the cover plate 42. After the evacuation is performed again, the regeneration exhaust port 51 is sealed with a sealing material for regeneration that is positioned and held on the concave surface 42d as described below.

As shown in FIG. 6, the sealing material for reproduction includes a reproducing cover plate 52 capable of covering the concave surface 42d of the cover plate 42, a plate portion 52a of the cover plate 52, and a plate of the cover plate 42. A brazing material 53 for regeneration for brazing the portion 42a is included. The brazing material 53 is similar to the brazing material 43 described above. The cover plate 52 has the same specifications as the cover plate 42 described above. The cover plate 52 and the cover plate 42 have the same shape, the same size, and are formed of the same material,
The same parts can be used for each other.

The convex surface 52c of the cover plate 52 is fitted into the concave surface 42d of the cover plate 42 so as to face each other. As described above, since the concave surface 42d and the convex surface 52c are fitted to each other, the cover plate 52 is held so as to cover the concave surface 42d. The evacuation during regeneration is performed in the same manner as the first evacuation described above. Then, the cover plate 52 is brazed to the cover plate 42 with a brazing material 53 between the plate portions, and seals the regeneration exhaust port 51.

As described above, since the concave surface 42d and the convex surface 52c are engaged with each other and the cover plate 52 is held in a state of covering the concave surface 42d, the regeneration exhaust port 51 can be securely sealed. The convex surface 52c of the cover plate 52 for reproduction enters the concave surface 42d and is hard to be bulky.
It can be reproduced again using 2d. Further, as shown in FIG. 7, the reproducing cover plate 52 shown in FIG. 6 may be arranged in the opposite direction to cover the concave surface 42d of the cover plate 42. That is, the concave surface 52d of the cover plate 52 and the cover plate 42
Since the concave portions 42d face each other, the recessed portions do not collide with each other, so that the surfaces of the plate portions can be brought close to each other and brazed reliably. The position of the cover plate 52 is regulated by the side surface 45 b of the holding recess 45, and is held against the concave surface 42 d of the cover plate 42.
As a result, the regeneration exhaust port 51 can be easily and reliably sealed as described above.

As shown in FIGS. 8 and 9, instead of the regenerating cover plate 52 having the same configuration as the cover plate 42, regenerating cover plates 55 and 56 may be used. 8 has a depression 55b smaller than the depression 42b of the cover 42 used for first applying a vacuum.
Thereby, while the convex surface 55c of the cover plate 55 is fitted and held in the concave surface 42d of the cover plate 42, the plate portions 42a, 55a of the cover plate can be brought close to each other without the depressions hitting each other. Brazing can be reliably performed on each other, and the regeneration exhaust port 51 can be reliably sealed. Further, the recessed portion 55b of the cover plate 55 is accommodated in the concave surface 42d of the cover plate 42, so that it is not bulky. Further, reproduction can be performed again by using the concave surface 55d of the cover plate 55.

The reproducing cover plate 56 shown in FIG. 9 is formed in a flat plate shape. Therefore, the plate surface of the cover plate 56 and the peripheral edge of the concave surface 42d of the cover plate 42 can be brought closer to each other. In addition, the cover plate 56 is provided with the holding recess 45.
And is held in a state of covering the concave surface 42d of the cover plate 42. As a result, the covering plate 56 is replaced with the brazing material 53 by the covering plate 42.
Thus, the regeneration exhaust port 51 can be reliably sealed. As described above, since the cover plate 56 has a simple flat plate shape, it is easy to manufacture, and it is possible to suppress an increase in component costs.

In the case shown in FIG. 10, the sealing material for reproduction is made of a solid brazing material 54 made of glass. The above-mentioned solid brazing material 54 made of glass melts at a relatively low temperature as compared with the brazing material 43 made of metal used at the time of the first evacuation. The solid brazing material 54 is formed in a predetermined shape, for example, a column shape or a disk shape, and has a shape held in the concave surface 42 d of the cover plate 42. The concave surface 42d of the cover plate 42 in this case functions as a holding concave portion for the solid brazing material 54. Further, the regeneration exhaust port 51 is formed in such a size that the brazing material 54 can stay due to surface tension when melted. In addition, the solid brazing material 54 may be made of a metal brazing material such as an aluminum brazing material other than glass.

At the time of evacuation, the container body 10 is in an inverted state. The regeneration exhaust port 51 is formed in advance in the concave surface 42d. The above-mentioned brazing material 54 is held in a solid state in the concave surface 42 d of the cover plate 42. In this state, the container body 1
0 is evacuated in the vacuum heating furnace, and the gap S is also evacuated through the regeneration exhaust port 51. Then, after evacuation, the solid brazing material 54 is melted by heating, and the regeneration exhaust port 51 is sealed.

As described above, the solid brazing material 54 made of glass is used.
Is held in the concave surface 42d, so that the regeneration exhaust port 51 in the concave surface 42d can be reliably sealed without being displaced during evacuation. In the sealing mechanism 40 shown in FIG. 11, a flat cover plate 46 is used instead of the cover plate 42 described above. This cover plate 46 has the regeneration exhaust port 5
1 is formed. The flat plate-shaped cover plate 56 described above is covered with the brazing material
3 brazed. The position of the cover plate 56 is regulated and held with respect to the regeneration exhaust port 51 by the holding recess 45. That is, the holding recess 45 includes a bottom surface portion where the exhaust port is formed, and a side surface portion which rises substantially straight from the bottom surface portion and is formed at a predetermined depth, and the depth of the side surface portion is plural times. For example, when performing two evacuations, the cover plates 46 and 56 are deeper than the total thickness of the plurality of cover plates that are brazed and stacked so that the cover plates 46 and 56 can be brazed and held in a stacked state. It has a depth H. In addition, the depth of the holding concave portion 45 is set to the thickness of the entire cover plate in accordance with three or more evacuations, so that the holding plate can be regenerated as needed. Here, as a sealing material, a solid brazing material made of glass may be used in addition to a cover plate brazed by a brazing material made of metal. In the case where a solid brazing material made of glass is used, the depth of the holding recess may be set to a dimension when a plurality of fixing brazing materials are stacked.

Further, instead of the regenerating cover plate 56 of the sealing mechanism 40 shown in FIG. 11, a cover plate 52 having the above-mentioned depression may be used. In this case, the regeneration exhaust port 51 formed in the cover plate 46 is formed to have a size that allows the convex surface 52c of the cover plate 52 to enter, so that the regeneration exhaust port 51 and the convex surface 52c are engaged, and the cover plate 52 is Since the holding recess 45 is held,
Can be reliably held even when the depth is small. In addition, reproduction can be performed again using the concave surface 52d without taking a place.

In the sealing mechanism 40 shown in FIG.
As a sealing material for sealing 1, a mounting member 47 as a functional member is used instead of the above-described cover plate 42, and the exhaust port 41 is covered and sealed by the mounting member 47. The attachment member 47 is configured by integrally forming the cover plate 42 and the attachment member 33 for attaching the heater 31. That is, as shown in FIG. 13, the mounting member 47 includes a plate portion 47a similar to the above-described plate portion 42a, and a convex surface 47c and a concave surface 47d similar to the above-described depressed portion 42b.
And a seat 47e extending in a bent shape from the edge of the plate portion 47a. In this seat 47e,
A female screw hole 47f is formed. The seat 47 e is disposed at a position beyond the holding recess 45, and
While supporting the holding plate 34 for attaching the holding plate 34, the holding plate 34 is fixed by the screws 36 screwed into the female screw holes 47f. The holding recess 45 for the attachment member 47 is formed at a position where the attachment member 33 in FIG. 2 is located. Here, the plate portion 47 a of the mounting member 47 is brazed by the brazing material 43. At least one of the mounting members 33 may be mounted instead of the mounting member 47.

As described above, the mounting member 47 is connected to the exhaust port 41.
And a mounting member 33 as a functional member, so that it is not necessary to take up space. Moreover, the mounting member 47 brazed in the holding recess 45 can reliably seal the exhaust port. In addition, reproduction can be performed in the same manner as in FIGS. 6 to 11 described above. Here, examples of the functional member include, in addition to the heater mounting member, a mounting member for mounting a cover or the like, and a display plate that is mounted in a recess formed in the inner container 11 and indicates a water level in the container body 10. Can be.

The same effect can be obtained even if the holding recess 45 is used both for holding the sealing material for sealing the exhaust port and for holding the above-mentioned functional members other than the sealing material. Can be.
Here, the sealing member and the functional member may be attached to the holding recess 45 so as to overlap with each other. In addition, the concave portion may have an exhaust port formed therein when the gap is first evacuated and / or the gap is evacuated during regeneration.

In the sealing mechanism 40 shown in FIGS.
The holding recess 45 is formed in multiple stages, for example, two stages. The holding recess 45 is provided at the first position at a shallow position in the depth direction.
It has a portion 45f and a second portion 45g located at a position deeper in the depth direction than the first portion 45f. First part 45
f is an oval in a plan view, and a second portion 45g is formed at a position deviated in the longitudinal direction. 45g of the second part
Is formed in the first portion 45f and is formed to be deeper and circular in plan view. An exhaust port 41 for initially evacuating the gap is formed at the bottom of the second portion 45g which is the deepest portion. The sealing material for the exhaust port 41 is made of, for example, a solid brazing material 44 made of glass. This solid brazing material 44
Is similar to the above-described solid brazing material 54, is formed in a shape held in the second portion 45g, is heated and melted during evacuation, solidifies after melting, and seals the exhaust port 41. I have. Further, the brazing material 44 solidified in the second portion 45g is filled and solidified in the holding recess 45 except for the first portion 45f due to the regeneration exhaust port. Brazing material 44
Is a state where the bottom surface 45h of the first portion 45f is exposed,
As will be described later, the sealing material for reproduction can be stably held on the bottom surface 45h of the first portion 45f.

The regeneration exhaust port 51 is connected to the first exhaust port 51 as described later.
It is formed through the sealing material in the portion 45f or the second portion 45g. The sealing material for reproduction is held in the first portion 45f. Therefore, the regeneration exhaust port 51 can be reliably sealed, so that the regeneration can be surely performed. In addition, since the exhaust port for evacuating a plurality of times can be provided in the single holding concave portion 45 a plurality of times, a space is not required.

The bottom surface 45h of the first portion 45f is formed at a predetermined depth from the surface of the container body 10. A plurality of, for example, two regions for selectively holding a sealing material for reproduction are set on the bottom surface 45h. The first region is constituted by the entire bottom surface 45h, and as shown in FIG. 17, a regenerative brazing material 53 and a flat cover plate 57 brazed to the bottom surface 45h by the brazing material 53 are mounted thereon. Can be installed. In this state, the cover plate 57 is moved to the first portion 45f.
It is housed and held inside. The second area is the bottom surface 4
In 5h, it is constituted by the peripheral portion of the second portion 45g, where a solid brazing material 54 made of glass can be held near the second portion 45g as shown in FIG. In this way, the sealing material for regeneration is replaced with the solid brazing material 54 made of glass.
And a combination of the cover plate 57 and the brazing material 53 can be selectively used.

As shown in FIGS. 17 and 18, when the plate-shaped cover plate 57 and the brazing material 53 are used as the sealing material for regeneration, the regeneration exhaust port 51 is provided on the side where the second portion 45g is provided. Is formed at a portion of the bottom surface 45h opposite to the side. The brazing material 53 is formed in an annular shape surrounding the regeneration exhaust port 51 and the second portion 45g, and the cover plate 57 is brazed while being placed on the brazing material 53. The cover plate 57
The regenerating exhaust port 51 and the brazing material 44 and the exhaust port 41 in the second portion 45g are covered and sealed. Here, the cover plate 57
Covers the second portion 45 g because the solid brazing material 44 made of glass is used as a sealing material at the time of the first evacuation, so that the heating according to the metal brazing material 53 for regeneration is performed. This is because it is sometimes assumed that the exhaust port 41 is opened. Note that the regeneration exhaust port 51 may be formed by penetrating the sealing material in the second portion 45g.

As shown in FIGS. 19 and 20, when the sealing material for regeneration is a solid brazing material 54 made of glass, the regeneration exhaust port 51 is located on the periphery of the second portion 45g. The first portion 45f is formed at the bottom surface 45h. The solid brazing material 54 is held in the above-described second region, and is heated and melted and solidified during evacuation during regeneration. In this state, the solid brazing material 54 covers the second portion 45g and the first portion 45f serving as the peripheral edge thereof, and seals the exhaust port 41, the solid brazing material 44, and the regeneration exhaust port 51 as a whole. Note that the regeneration exhaust port 51 may be formed by penetrating the sealing material in the second portion 45g as described above.

As described above, since the first portion 45f can be made of a sealing material for reproduction, it can be easily sealed according to circumstances. In addition, since the sealing material for reproduction can cover the second portion 45g together with the sealing material there, temporarily the second portion 45g
Even if there is a leak in the original exhaust port 41 formed in the above, this leak can be reliably sealed, and the operation can be performed collectively.

The sealing material for the exhaust port 41 is not only the solid brazing material 44 made of glass but also the above-mentioned cover plate 4 which is brazed to the peripheral portion of the exhaust port 41 by a metal brazing material 43.
It may be 2 or the like. Further, as the sealing material for the regeneration exhaust port 51, only one of the solid brazing material 54 made of glass and the above-described cover plate 57 brazed to the peripheral portion of the exhaust port by the metal brazing material can be used. You may do so. Also,
When the solid brazing material 54 made of glass is used as the sealing material for reproduction, a second portion 45g is provided adjacent to the first portion 45f so that the first portion 45f does not surround the second portion 45g. The solid brazing material 54 may be held near the second portion 45g.

Next, the case where the present invention is applied to the heat retaining water bottle 2 will be described. As shown in FIG. 21, the heat retaining water bottle 2 has a container main body 10 as a metal vacuum heat retaining container, and an inner plug that covers the opening 10a at the upper end of the container main body 10 to open and close the spout while defining the spout. It has a portion 15, a lid 16 also serving as a cup that covers the inner plug 15 and the upper part of the container body 10, and a bottom cover 17 that covers the bottom of the container body 10. In this heat retaining water bottle 2, the peripheral surface of the container body 10 also serves as an exterior body.

The container body 10 includes an inner container 11 and an outer container 12.
Is a double structure having a gap S therebetween, and the gap S is evacuated. The portion along the peripheral surface and the portion along the bottom surface have a double structure. The container body 10 has a cylindrical inner container 11 having a bottom and an outer container 12 formed by welding a cylindrical portion 13 and a bottom portion 14. The inner container 11 and the outer container 12 are both made of stainless steel.

The inner container 11 is formed in a cylindrical shape with a bottom, and has a bottom portion 11 a having a concavely curved inner side and a bottom portion 11 a.
a and a cylindrical side surface portion 11b that rises from the outer peripheral edge. The side portion 11b is located on the neck 1 near the upper end.
At 1c, the diameter is once reduced, and the upper end is formed in a cylindrical shape. Upper end of inner container 11 and cylindrical portion 1 of outer container 12
3 is welded to the upper end portion in an airtight state.

The cylindrical portion 13 of the outer container 12 is formed in a substantially cylindrical shape surrounding the outer peripheral surface of the side surface portion 11b of the inner container 11. A male screw into which the inner plug 15 and the lid 16 are screwed is formed on the upper part of the cylindrical portion 13. The bottom part 14 of the outer container 12 is formed in a substantially disk shape along the bottom part 11 a of the inner container 11. An annular dent is formed on the outer peripheral edge of the bottom surface portion 14, and the outer side in the radial direction from this dent is
It is formed in a cylindrical shape. The outer peripheral edge of the bottom portion 14 and the lower end of the cylindrical portion 13 are welded to each other in an airtight state. A sealing mechanism 40 is provided at the center of the bottom portion 14. A getter 50 is attached to a surface of the bottom portion 14 facing the gap.

As shown in FIG. 22, the sealing mechanism 40 has a stepped holding recess 45 formed in a plurality of stages and an exhaust formed at the bottom of the holding recess 45 to evacuate the gap. It has an opening 41 and a sealing material made of a solid brazing material 44 made of glass for closing the exhaust opening 41. Holding recess 45
Are formed in multiple steps, for example, three steps. The holding recesses 45 are arranged in the first portion 4 arranged in the depth direction from the surface.
5f, a second portion 45g, and a third portion 45j. The first portion 45f is a portion having a predetermined depth H1 from the lower surface of the bottom surface portion 14. The first portion 45f has a depth H
The second second portion 45g is formed. 45g of the second part
Inside, a third portion 45j that is the deepest portion is formed.

The exhaust port 41 is formed on the bottom of the third portion 45j. The solid brazing material 44 for sealing the exhaust port 41 can be held in the second portion 45g. At the time of the first evacuation, the solid brazing material 44 in the inverted state is
It is held in the portion 45g (shown by a dashed line in FIG. 22), melts by heating, and then solidifies in the second portion 45g to seal the exhaust port 41.

The regeneration exhaust port 51 is, as shown in FIG.
It is formed through the solid brazing material 44 in the second portion 45g. The sealing material for sealing the regeneration exhaust port 51 is made of a solid brazing material 54 made of glass, is formed in a predetermined shape, and can be held in the first portion 45f (shown by a dashed line in FIG. 23). did.). During playback, as described above,
Vacuum. At this time, the solid brazing material 54 is melted by the heating, and both the regeneration exhaust port 51 and the solid brazing material 44 in the second portion 45g are covered and sealed.

As described above, the holding recess 45 is formed in a plurality of stages, and the sealing material can be held in each stage. Therefore, while forming an exhaust port for vacuuming a plurality of times inside, the exhaust port is formed. Sealing can be performed reliably. Further, since the regenerating exhaust port 51 is formed through the solid brazing material 44 made of glass and can be sealed with the solid brazing material 54 so as to overlap with the regenerating exhaust port 51, the space can be saved even more.

As described above, according to each embodiment of the present invention, the cover plate 42 shown in FIGS. 6, 7, 8, 9 and 10 and the mounting member 47 as the cover plate shown in FIG. As described above, at the time of regeneration, the regeneration exhaust port 51 may be formed in the depressed portion of the cover plate, and the regeneration exhaust port 51 may be sealed with a sealing material for regeneration. At this time, since the regenerating exhaust port 51 can be provided on the cover plate, it is not necessary to provide a separate space for the regenerating exhaust port 51. As a result, no space is required.

Further, since there is no need to provide a separate space for the regenerating exhaust port 51 such as the holding recess 45, the cost that would otherwise arise, for example, the cost of a mold for forming a spare holding recess. The cost, the design cost for securing a space for the spare holding recess, and the increase in the working cost due to the decrease in workability due to the presence of the spare holding recess can be omitted. Since these costs can be omitted in both the case where the reproduction is performed and the case where the reproduction is not required, the total cost including the case where the reproduction is not performed can be reduced. In addition, since the regeneration exhaust port 51 is provided in the depression, it can be easily formed and can be reproduced at low cost.

In particular, since the cover plate 42 and the reproduction cover plate 52 shown in FIGS. 6 and 7 have the same specifications, the reproduction cover plate 5
As a result, the parts for the cover plate 42 can be used, so that the cost of parts for reproduction can be reduced, and the parts can be easily managed. For example, as shown in FIG. 6, the cover plate 42 and the regeneration cover plate 52 can be arranged so that the depressed portions are fitted together, and the regeneration exhaust port 51 can be sealed with the regeneration cover plate 52. In this case, the regenerating cover plate 52 can be reliably positioned and held with respect to the regenerating exhaust port 51 by fitting the depressed portions together, so that the regenerating exhaust port 51 can be reliably sealed. In addition, it is difficult to increase the volume by fitting the depressed portions. Also, the reproduction can be performed again by using the depressed portion of the reproduction cover plate 52.

Further, as shown in FIG. 7, the recessed portions of the cover plate 42 and the regeneration cover plate 52 are arranged so as to be depressed in opposite directions to each other. Can also be sealed. In this case, the cover plate 4
2 and the peripheral edges of the depressed portion of the regenerating cover plate 52 can be brought close to each other and can be reliably brazed.
1 can be reliably sealed.

Further, since the cover plates 42 shown in FIG. 6 and the like do not have to be bulky when a plurality of cover plates are stacked, the cost for storing the cover plates 42 can be reduced. FIG.
In the embodiment shown in FIG.
b can be accommodated in the depressed portion 42b of the cover plate 42,
The depression 55b of the regenerating cover plate 55 is located in the depression 42b.
, And the plate portions can be brought close to each other and brazed reliably. As a result, the regeneration exhaust port 51 can be reliably sealed. Further, the reproduction can be performed again by using the depressed portion 55b of the reproduction cover plate 55.

In the embodiment shown in FIG. 10, the solid brazing material 54 for regeneration is held in the recessed portion 42b, so that the displacement is prevented, so that the regeneration exhaust port 51 is securely sealed. be able to. Also, FIG. 11, FIG. 17, FIG.
9 and the embodiment shown in FIG.
Is a depth capable of holding a plurality of sealing materials for vacuuming and for regenerating the sealing material in an overlapping manner.
Is formed at the innermost part of the opening, firstly, an exhaust port 41 for evacuating is formed, this is covered with a sealing material, and a regenerating exhaust port is formed in a remaining holding recess 45 covered with the sealing material. A space for forming 51 is defined. As a result, it is possible to reliably reproduce a plurality of times without taking up space. Moreover,
Since there is no need to provide a separate space for the regeneration exhaust port 51,
It is possible to eliminate the cost of separately forming the concave portion and the above-described increase in the operation cost that occurs when the concave portion is separately provided. Therefore, it is possible to reduce the overall cost including the case where the reproduction is not performed.

Here, the sealing material may be a solid brazing material made of glass or the like as shown in FIGS. 17, 19 and 23, or a metal brazing material as shown in FIG. And a combination of a cover plate brazed to the peripheral portion of the exhaust port by this brazing material. For example, the depth of the recess may be a dimension when a plurality of fixed brazing materials are stacked or a dimension when a plurality of cover plates are stacked.

In particular, the holding recess 45 shown in FIG. 11 is formed by one step pressing, and the cover plates 46 and 56 which can be accommodated therein seal the exhaust port 41 and the regeneration exhaust port 51. I have. As described above, since the cover plate 46 and the reproduction cover plate 56 are stacked in the holding concave portion 45 having the substantially straight side surface, the both cover plates 45 and 56 can be made to have the same specifications, and as a result, the components for reproduction can be obtained. Costs can be reduced, and parts management becomes easier. In addition, since the cover plate 46 and the reproduction cover plate 56 can be arranged so as to overlap when viewed from the stacking direction, the space is not required.

Since the depth of the holding recess 45 shown in FIG. 11 is set so that the regeneration sealing material can be securely held in the holding recess 45, the regeneration sealing material is also provided. Can reliably seal the regeneration exhaust port 51 without causing a displacement. In particular, in the multi-stage holding recess 45 of the embodiment shown in FIGS. 17, 19, and 23, the sealing material is exhausted in the holding recess 45 except for a shallow portion of the sealing material due to the regeneration exhaust port. The mouth 41 is sealed. Thereby, the regeneration exhaust port 51 can be formed in the holding recess 45. Moreover, since the regeneration sealing material is also held in the shallow portion of the holding recess 45, the regeneration exhaust port 51 can be reliably sealed.

As shown in FIGS. 17 and 19, the first portion of the holding recess 45 as a shallow portion is wider than the deepest portion. Recycling cover plate 57 brazed by 53 and brazing material 54 can be selected and used. Also, the regeneration exhaust port 5
1 may be formed in a shallow portion of the holding concave portion, or may be formed through a sealing material sealing the exhaust port 41.
As described above, since the sealing material can be selected according to the convenience at the time of reproduction, the workability is good and the cost can be reduced.

Further, as shown in FIG. 17, FIG. 19 and FIG. 23, since a plurality of exhaust ports for evacuating can be provided in the holding concave portion 45, concave portions separately partitioned for each exhaust port can be provided. This saves space in comparison with the case of providing.
In addition, since it is not necessary to provide a separate space for the regenerating exhaust port 51, for example, the cost of forming separate holding recesses and the above-described cost caused when separately provided can be omitted. Therefore, it is possible to reduce the overall cost including the case where the reproduction is not performed.

Here, the sealing material and the regenerating sealing material may be made of, for example, a solid brazing material made of glass as shown in FIGS. 17, 19 and 23, or a metal as shown in FIG. It is also possible to use a combination of a brazing material 53 made of steel and a cover plate 57 brazed to the peripheral portion of the exhaust port by the brazing material. In addition, in the case shown in FIG.
Covers both the regenerating exhaust port 51 and the brazing material 44, so that the exhaust port 41 and the brazing material 44 therefor can be sealed together with the regenerating exhaust port 51, so that the sealing can be reliably performed. Also, since the regenerating cover plate 57 is brazed to the first portion 45f as a shallow portion of the holding recess 45,
Even on the molten brazing material 44, the brazing can be performed easily and reliably, so that the work is easy.

In the case shown in FIG. 19, the regenerating brazing material 54 covers the regenerating exhaust port 51 and the brazing material 44, so that the exhaust port 41 and the brazing material 44 therefor can be sealed together with the regenerating exhaust port 51. As a result, it is possible to reliably seal. In addition, since the regeneration brazing material 54 is brazed to the first portion 45f as a shallow portion of the holding recess 45,
Even on the molten brazing material 44, the brazing can be performed easily and reliably, so that the work is easy. Here, the regeneration exhaust port 5
1 may be formed on the sealing material for sealing the exhaust port 41 and in the vicinity thereof.

Further, in the embodiment shown in FIG. 12, the holding recess 45 can be used both for sealing the exhaust port 41 and for holding the mounting member 47 as a functional component. In addition, it is possible to eliminate the cost of separately forming the concave portion and the above-described increase in the operation cost caused when the concave portion is separately formed. In addition, since the sealing material is held in the holding recess, the exhaust port 41 can be reliably sealed. Therefore, it is possible to reduce the overall cost including the case where the reproduction is not performed.

Here, examples of the functional component include a mounting member for mounting a heater, a cover, and the like, and a display plate indicating a water level in the container. Further, the holding recess 45 that is also used may be one in which an exhaust port is formed inside at least one of when the gap is initially evacuated and when the gap is evacuated during regeneration. In particular, when the regeneration exhaust port 51 for regeneration is formed in the above-mentioned holding concave portion 45 which is also used as the above, it is usual frequency to hold both the sealing material and the functional component in the holding concave portion 45. This is a time when reproduction is small, and there is no problem even if the workability is reduced because the holding recess 45 is also used.

When the mounting member of the heater and the sealing material of the exhaust port 41 are used as in the case of the mounting member 47 as a functional component in FIG. 12, the space for mounting can be reduced. . In addition, since both the functional component and the sealing material are used, the cost of components can be reduced, and the components can be mounted collectively, so that the time and effort for mounting can be reduced.

Here, examples of the functional component include a mounting member for mounting a heater, a cover, and the like, and a display plate indicating a water level in the container. The functional component may function as the sealing material only when the gap is first evacuated and / or when the gap is evacuated during reproduction. Further, at least a part of the functional component only needs to function as a sealing material.

In particular, when the exhaust port 41 sealed by the mounting member 47 as a functional component is an exhaust port for initially evacuating the gap, the effect of saving space is not reproduced. Even in this case, it can be obtained reliably. In addition, since the regeneration exhaust port 51 can be formed in the mounting member 47 covering the exhaust port 41, it is not necessary to take a space at the time of regeneration.

As shown in FIGS. 6 to 11, 17 to 20, and 23, a sealing material for sealing an exhaust port 41 for initially applying a vacuum, and a regeneration exhaust port for regeneration. 5
At least a part of the sealing material for sealing 1 is arranged so as to overlap with each other. FIG.
As shown in (1), a sealing member and a functional member such as an attachment member can be used, or at least a part of the sealing member and the functional member can be arranged so as to overlap each other. As a result, the space required for the exhaust port can be reduced, and the space for regeneration can also be reduced.

Further, a pair of engaging portions where the concave surface 42d and the convex surface 52c of FIG. 6 are engaged, and the concave surface 42d and the convex surface 55c of FIG.
10, a concave surface 42d in FIG. 10, a holding recess 45 in FIGS. 7, 9 and 11, and a first portion 45f in FIGS. 14 to 23. A holding means capable of holding the stopper in association with the regeneration exhaust port 51 is provided. Accordingly, the sealing member can easily and reliably seal the regeneration exhaust port 51, so that the container body 10 can be reliably recycled. As a result, the manufacturing cost of the container body 10 can be reduced.

Also, like the electric pot 1 and the like, the heater 3
When the central portion of the bottom surface of the double-structured container body 10 is single-layered for mounting the first and outlet pipes 23, it is difficult to secure a sufficient space for providing the sealing mechanism 40. Therefore, the sealing mechanism 40 of the present invention is preferable because it can be reliably regenerated without taking up space. In addition, since the sealing mechanism 40 does not require a space, it can contribute to downsizing and weight reduction of the heat retaining water bottle 2.

In the above embodiment, the sealing mechanism 4
Although 0 is provided on the outer surface of the outer container 12, it may be provided on the inner surface of the inner container 11. In addition, the present invention can be applied to equipment using a metal vacuum insulation container such as a tabletop thermos, a lunch jar, an insulation cooker, etc., in addition to the electric pot 1 and the insulation water bottle 2 described above.

In addition, various design changes can be made without changing the gist of the present invention.

[Brief description of the drawings]

FIG. 1 is a sectional view of an electric pot according to a first embodiment of the present invention.

FIG. 2 is a bottom view of the container body of the electric pot of FIG.

3 is an enlarged view of a portion A in FIG. 1 and shows a cross section taken along line BB in FIG. 2;

FIG. 4 is a cross-sectional view of section A of FIG. 3 as viewed from a direction C.

FIG. 5 is a bottom view of a portion A in FIG. 3;

FIG. 6 is an enlarged view of a portion A in FIG. 1 in a reproduction state. FIG.
3 shows a BB cross section of FIG.

FIG. 7 is an enlarged view of a sealing mechanism according to a second embodiment of the present invention in a regenerated state.

FIG. 8 is an enlarged view of a sealing mechanism according to a third embodiment of the present invention in a regenerated state.

FIG. 9 is an enlarged view of a regenerated state of a sealing mechanism according to a fourth embodiment of the present invention.

FIG. 10 is an enlarged view of a sealing mechanism according to a fifth embodiment of the present invention in a regenerated state.

FIG. 11 is an enlarged view of a regenerated state of a sealing mechanism according to a sixth embodiment of the present invention.

FIG. 12 is an enlarged view of a regenerated state of a sealing mechanism according to a seventh embodiment of the present invention.

FIG. 13 is a perspective view of the mounting member of FIG.

FIG. 14 is an enlarged view of a sealing mechanism according to an eighth embodiment of the present invention in a reproduced state.

15 is a cross-sectional view of the sealing mechanism of FIG. 14 as viewed from a direction C.

FIG. 16 is a bottom view of the sealing mechanism of FIG.

FIG. 17 is an enlarged view of the sealing mechanism of FIG. 14 in a regenerating state when viewed from the direction C.

FIG. 18 is a bottom view of the sealing mechanism of FIG. 17 in a reproduced state.

19 is an enlarged view of the sealing mechanism of FIG. 14 in a regenerating state when viewed from the direction C, and shows a sealing mode different from that of FIG. 17;

FIG. 20 is a bottom view of the sealing mechanism of FIG. 19 in a reproduced state.

FIG. 21 is a front sectional view of a heat retaining water bottle according to a ninth embodiment of the present invention.

FIG. 22 is an enlarged cross-sectional view of the sealing mechanism shown in D part of FIG. 21;

FIG. 23 is an enlarged cross-sectional view of the sealing mechanism shown in the D part of FIG. 21 in a regenerated state.

FIG. 24 is a front sectional view of a container body of a conventional heat retaining water bottle.

FIG. 25 is a bottom view of the container body of FIG. 24.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric pot 2 Insulated water bottle 10 Container main body (vacuum insulated container) 11 Inner container 12 Outer container 41 Exhaust port 42 Covering plate 42b Depressed part 45 Holding concave part 45f First part (shallow part) 45g Second part (deepest part) 47 Mounting member (functional member, cover plate) 47b Depressed portion 51 Regeneration exhaust port 52, 55, 56, 57 Regeneration cover plate 53 Regeneration brazing material 54 Regeneration solid brazing material S Gap

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A47J 41/02 102 A47G 19/22 A47J 27/00 101

Claims (4)

(57) [Claims] 1. A metal inner container and an outer container are formed in a double structure with a gap therebetween, and the gap is evacuated, and an exhaust port for evacuating is sealed with a sealing material. What is a mouth
Vacuum insulation provided in a recess that is recessed from the surface to the gap side
In the container, the recess has a depth capable of holding a plurality of sealing materials in an overlapping manner.
The deepest part of the recess is formed with an exhaust port and covered with a sealing material
A regeneration exhaust port is formed in the remaining recess covered with the sealing material.
Metal vacuum insulated container characterized that you have to partition the space for forming. 2. The metal vacuum insulated container according to claim 1, wherein said recesses are formed in multiple stages , and said recesses are formed in multiple stages.
An exhaust port is formed at the deepest part of the
A space for sealing the air hole is formed, and the sealing material covers the deepest portion of the concave portion, excluding the shallow portion of the concave portion.
A vacuum container made of metal, characterized in that: 3. The metal vacuum insulation container according to claim 2, wherein the sealing material is melted from a solid state to form an exhaust port.
The regeneration exhaust port is formed in the shallow portion of the concave portion, and the regeneration cover is closed.
Covered by the plate, the reproducing cover plate covers the regeneration exhaust port and sealing material,
Regeneration exhaust after brazing to the shallow part of the recess with brazing material
Metal vacuum insulated container, characterized in Rukoto to abolish seal the mouth. 4. The metal vacuum insulation container according to claim 2 , wherein the sealing material is melted from a solid state to form an exhaust port.
Is a brazing material that seals the exhaust port by closing the seal, and the regeneration exhaust port is formed in the vicinity of the sealing material.
The sealing material for regeneration is held in the shallow portion of the concave portion and solidified.
By melting from the state , regeneration exhaust port and sealing material
Metal vacuum insulated container, wherein the brazing material der Rukoto for sealing the reproduction outlet covers.