JP2601123Y2 - Metal vacuum double container - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION This invention relates to a vacuum double container made of metal.

[0002]

2. Description of the Related Art A container having a double structure of an inner container and an outer container is made of a metal such as stainless steel, and the peripheral edges of the inner and outer containers are joined and integrated, and the space between the inner and outer containers is evacuated. Such a vacuum double container made of metal is conventionally known. In addition, in order to prevent the joint at the periphery of the mouth of the inner and outer containers from being damaged by impact or vibration, a cylindrical fitting attached to the bottom surface of the outer container is compared to a fitting with holes attached to the lower surface of the inner container. Is inserted with a slight gap between them, so that the vibration of the inner container due to an impact or the like is limited to the range of the above gap (Japanese Patent Laid-Open No. 61-16832).
No. 2).

[0003]

[Problems to be Solved by the Invention] However, even if a countermeasure is taken as described above, since there is a slight gap between the metal fittings of both containers, it is installed in a place where vibration always occurs. If used, the inner container always vibrates within the gap between the metal fittings of the two containers, so that the joint portion is damaged early and has a problem of lack of durability.

Accordingly, an object of the present invention is to provide a durable metal vacuum double container excellent in shock resistance and vibration resistance while minimizing heat loss.

[0005]

The present invention for solving the above-mentioned problem has a double structure of a metal inner container and an outer container, and has a vacuum in the space between the inner and outer containers. In a vacuum-made double container, a contact portion is provided to make point contact or line contact between the bottom of the inner container and the bottom of the outer container at a plurality of points in the circumferential direction or to contact the bottom of both containers via a heat insulating material. One end of the overflow pipe is connected to the water outlet of the plug inserted into the mouth of the inner container, the other end of the overflow pipe is made to approach the inner surface of the bottom of the inner container, and the bottoms of the inner and outer containers are set to the upper side, It is designed to be installed and used with the mouth of the inner container facing down.

[0006] It is also possible to adopt a configuration in which a recess for an air reservoir is provided on the inner surface of the bottom of the inner container.

[0007]

In the vacuum double container made of metal according to the present invention, vibration is regulated at a plurality of point contact or line contact portions where the inner container exists in the circumferential direction. Further, in a use state in which the mouth of the inner container is installed on the lower side, an air layer is formed between the upper end of the overflow pipe and the bottom surface of the inner container, and the air layer acts as a heat insulator for the contact portion.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The first embodiment shown in FIG. 1 has a double structure of a stainless steel inner container 1 and an outer container 2, and the outer peripheral portion of the inner container 1 has an outer peripheral portion. 'Is integrated by welding.

On the lower surface of the bottom 1a of the inner container 1, a collar 5 is provided.
The flange 5 of the cylindrical metal fitting 6 (see FIG. 2) having the above is joined by welding. A rib 7 is provided on the inner peripheral surface of the cylindrical portion of the cylindrical fitting 6.
Is formed. A cruciform metal fitting 9 (see FIG. 2) is inserted into a hole 8 provided on the bottom 2a of the outer container 2, and an end plate 11 provided at the lower end of the cruciform metal fitting 9 is joined around the hole 8 on the lower surface of the bottom. I have.

The above-mentioned cruciform metal fitting 9 is inserted into the cylindrical metal fitting 6 of the inner container 1, and each of the four pieces combined in a cross shape makes a point contact with the inner peripheral surface of the rib 7 in a cross state. .

The air in the space between the inner container 1 and the outer container 2 is removed from the tip 10 and the tip 10
Is kept in a vacuum by closing.

Since the metal vacuum double container of the first embodiment is as described above, even if shock or vibration is applied to the inner container 1, the bottom portion 1a vibrates in the radial direction with respect to the outer container 2. Is regulated, and the joining strength of the mouth portions 3 and 3 'is not affected. Further, the heat transfer between the containers 1 and 2 is minimized because the contact between the metal fittings 6 and 9 is a point contact.

In the second embodiment shown in FIG. 3, a tapered recess 13 is formed in the bottom 1a of the inner container 1 so as to be recessed inward, and is joined to the bottom 2a of the outer container 2. 9 is inserted into the recess 13, and the tips of the four pieces of the cross-shaped bracket 9 are brought into point contact with the inner peripheral surface of the recess 13. First
There is an advantage that only one cross-shaped metal fitting 9 is required as compared with the embodiment.

In the third embodiment shown in FIG. 4, a cruciform metal fitting 9 is joined to the lower surface of the bottom 1a of the inner container 1, and this is connected to the outer container 2.
Is inserted into the hole 14 of the bottom portion 2a of the base member 2 to make point contact with the inner peripheral surface of the hole 14. Further, a cap 15 that covers the hole 14 and the tip of the cross-shaped bracket 9 is joined to the lower surface of the bottom 2 a of the outer container 2. In this case also, there is an advantage that only one cross-shaped metal fitting 9 is required.

In the fourth embodiment shown in FIG. 5, a bulging portion 19 is formed on the entire circumference of the body of the inner container 1, and a plurality of inward projections 21 formed on the body of the outer container 2 are used for the bulging. This is a point contact with the outlet 19.

The fifth embodiment shown in FIG. 6 is a cylindrical fitting 6 '.
The annular heat insulating material 12 fitted on the inner peripheral surface of the heat insulating material 12 is supported by the rib 7 ′, and the cross-shaped metal fitting 9 is inserted into the inner peripheral surface of the heat insulating material 12. In this case, the vibration of the inner container 1 is restricted, and the heat transfer between the metal fittings 6 'and 9 is further reduced as compared with the case of each of the above embodiments.

In the sixth embodiment shown in FIG. 7, a projection 16 is formed on the bottom surface of the bottom 1a of the inner container 1, and the bottom 2a of the outer container 2 faces the projection 16 and is larger than the projection. A recess 17 having a diameter is formed, and the upper end of the cylindrical heat insulating material 18 is fitted to the outer peripheral surface of the protrusion 16, and the lower end is fitted to the inner peripheral surface of the recess 17. The vibration of the inner container 1 is received by the outer container 2 via the heat insulating material 18.

In the seventh embodiment shown in FIG. 8, a large-diameter recess 17 'is formed in the inner container 1 and a small-diameter projection 16' is formed in the outer container 2, and the cylindrical heat insulating material 18 is connected to the recess 17 '. 'And the outer peripheral surface of the projection 16'. The same operation as in the fifth embodiment is performed.

In the eighth embodiment shown in FIG. 9, the anti-sway means of the inner container 1 uses a cylindrical metal fitting 6 and a cross-shaped metal fitting 9 as in the first embodiment. In the eighth embodiment, a rubber stopper 22 is inserted into the mouth 3 of the inner container 1.
The rubber stopper 22 has a water inlet 23 and a water outlet 24, and the water outlet 24 is provided with an overflow pipe 26 through an adapter 25.
Are connected. The upper end of the overflow pipe 26 approaches the bottom 1a of the inner container 1, and an inclined opening 27 formed at the upper end thereof is opened into the inner container 1.

The vacuum double container of the eighth embodiment is installed and used with the bottom 1a of the inner container 1 and the bottom 2a of the outer container 2 facing upward and the mouth 3 of the container 1 facing downward. . In this case, when the level of the water put in the inner container 1 reaches the opening 27 at the upper end of the overflow pipe 26, the water overflows, so that the upper end (bottom 1a) of the inner container 1 always has a constant air layer 28. Exists. Therefore, the air layer 28 has a heat insulating effect of heat transfer from the contact portion between the cylindrical fitting 6 and the cross-shaped fitting 9 to the liquid in the inner container 1.

In the ninth embodiment shown in FIG. 10, the inner container 1 is provided with an air reservoir recess 29 which is recessed in the direction of the outer container 2 at the bottom 1a.
Facing the top of The cylindrical metal fitting 6 is fixed to the opposite surface of the recess 29, and forms a contact portion with the cross metal fitting 9 of the outer container 2.

In this case as well, the mouth portion 3 is placed downward and used for use. When the inner container 1 is filled with water, the interior of the recess 29 becomes an air layer 28, and that portion functions as a heat insulator.

[0023]

[Effects of the Invention] As described above, the present invention makes the inner container and the bottom of the outer container come into point contact or line contact with each other at a plurality of points in the circumferential direction, so that the inner container vibrates even when an impact or vibration is applied. Is suppressed, and there is an effect that durability is improved. Also, since both containers are only in contact by point contact or line contact, heat transfer between the two containers is minimized. Further, when a heat insulating material is interposed between the bottom portions, heat transfer is further reduced. In addition, the air layer formed inside the inner container below the contact portion between the inner container and the outer container at the time of use has a heat insulating effect, and heat transfer is suppressed.

[Brief description of the drawings]

FIG. 1 is a sectional view of a first embodiment.

FIG. 2 is an exploded perspective view of the cylindrical bracket and the cross-shaped bracket according to the first embodiment.

FIG. 3 is a partially omitted cross-sectional view of the second embodiment.

FIG. 4 is a partially omitted sectional view of a third embodiment.

FIG. 5 is a partially omitted cross-sectional view of the fourth embodiment.

FIG. 6 is a partially omitted cross-sectional view of the fifth embodiment.

FIG. 7 is a partially omitted cross-sectional view of the sixth embodiment.

FIG. 8 is a partially omitted cross-sectional view of the seventh embodiment.

FIG. 9 is a sectional view of an eighth embodiment.

FIG. 10 is a partially omitted cross-sectional view of the ninth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Inner container 1a Bottom 2 Outer container 2a Bottom 3, 3 'Mouth 5 Collar 6, 6' Cylindrical fitting 7, 7 'Rib 8 Hole 9 Cross-shaped fitting 11 End plate 12 Insulation material 13 Recess 14 Hole 15 Cap 16, 16 'Projecting portion 17, 17' Concave portion 18 Insulation material 19 Swelling portion 21 Projection 22 Rubber plug 23 Water inlet 24 Water outlet 25 Adapter 26 Overflow pipe 27 Opening 28 Air layer 29 Concave portion

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-77720 (JP, A) JP-A-61-168322 (JP, A) Jikken 46-8991 (JP, Y1) Jikken 46- 12305 (JP, Y1) Jikken 46-12300 (JP, Y1) (58) Fields investigated (Int. Cl. ⁶ , DB name) A47J 41/02 102

Claims (2)

(57) [Scope of request for utility model registration] 1. A metal vacuum double container having a double structure of a metal inner container and an outer container, wherein a space between the inner and outer containers is evacuated. A contact portion is provided for making the bottoms point-contact or line-contact with each other at a plurality of positions in the circumferential direction, or providing a contact portion for bringing the bottoms of both containers into contact with each other via a heat insulating material, and overflowing the outlet of the stopper inserted into the mouth of the inner container. One end of the pipe is connected, the other end of the overflow pipe is brought closer to the inner surface of the bottom of the inner container, the bottom of the inner and outer containers is set to the upper side, and the mouth of the inner container is set to the lower side and used for use. A vacuum double container made of metal, characterized in that: 2. The metal vacuum double container according to claim 1, wherein a recess for an air reservoir is provided on an inner surface of a bottom portion of the inner container.