JPH04112334U - Metal vacuum double container - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce the number of parts and assembly man-hours in a metallic vacuum double container in which a getter G is housed in a vacuum space 4. [Structure] In the metal vacuum double container of the present invention, the dedicated getter holding member used in the conventional product is omitted, and the getter G
directly supported.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a metallic vacuum double container, and more specifically, Attributes relate to the structure of the bottom of the vacuum double container.

0002

[Conventional technology]

FIG. 7 shows a conventionally known metallic vacuum double container. In the figure, the symbol The metal vacuum double container shown by 1 has an inner container 2 and an outer container 3 made of stainless steel. The space 4 between the inner container 2 and the outer container 3 is connected to each other at the upper end. It is.

0003 The outer container 3 has two upper and lower reduced diameter walls (an upper reduced diameter wall 22 and a lower reduced diameter wall 22) at the lower end of the main body 6. A reduced diameter wall 24) is formed, and a ring for supporting the getter holding plate 32 is formed inside the lower reduced diameter wall 24. 31 is attached (welded), and a rising peripheral wall of a shallow dish-shaped bottom member 7 is attached to the outside of the upper reduced diameter wall 22. 11 are fitted and fixed (welded).

0004 A getter G is attached to the getter holding plate 32. This getter holding plate 32 The outer peripheral edge 32a of the ring 31 is sealed by brazing to the outer peripheral edge 31b of the ring 31. It is installed.

[0005] In addition, as an example of publicly known materials regarding metallic vacuum double containers, for example, JP-A-60 -222017 Publication and Utility Model Publication No. 2-32199.

[0006]

[Problem that the idea aims to solve]

The conventional metal vacuum double container described above uses a getter to hold the getter G. Using the retaining plate 32, further attach this getter retaining plate 32 to the bottom of the main body 6. In addition, these rings 31 and getter holding plate 32 are used for The structure is slightly different, such as the bottom member 7, which should be an exterior body, being used to cover the It's complicated.

[0007]

[Means to solve the problem]

The invention of the present application was made to improve the above-mentioned problems, and was designed to improve the above-mentioned problems. A metal formed by creating a vacuum in the space between the outer containers and accommodating a getter in the vacuum space. In a vacuum double container, the conventional getter holding plate is omitted, and the getter is mounted on the exterior body. It is characterized in that it is directly supported by a bottom member of the outer container, which forms a part of the outer container. Ru.

[0008] In other words, the metallic vacuum double container of the present invention is different from the conventional metallic vacuum container of the same type. A special member for holding the getter used in the double container (the getter in Figure 7) The retaining plate 32) is omitted, and the getter is directly fixed to the bottom member that forms part of the exterior body. or held between the bottom member and another appropriate member. Ru.

[0009]

【Example】

First example FIG. 1 shows the outer container main body of a metallic vacuum double container 1 according to a first embodiment of the present invention. 6 shows a state in which the bottom member 7 of the outer container 3 is being joined to the outer container 6. This fruit In any of the metal vacuum double containers shown in Example 1 and the second and third examples described below. However, the outer container 3 still serves as an exterior body, and therefore the bottom member 7 of the outer container 3 It still forms part of the exterior body.

0010 In this embodiment, the getter G is directly attached to the inner surface of the bottom member 7 by the getter holder 14. installed. On the other hand, the inner side of the bottom diameter reducing wall 25 of the main body 6 of the outer container 3 An outer peripheral wall 13a of a bottom ring 13 having a circular cavity in the center is welded to the bottom ring 13. .

[0011] Brazing filler metals 9 are arranged at appropriate intervals on the surface of the inner edge 13b of the bottom ring 13 (see FIG. 2). ), the inner container 2 and outer container 3 are heated by melting this brazing material in a vacuum heating furnace. The space 4 in between is kept in vacuum. Furthermore, the remaining gas in the vacuum space 4 is transferred to the getter G. Therefore, it is adsorbed, and the inside of the space 4 is maintained in a high vacuum state for a long period of time. In addition, this In this embodiment, between the reduced diameter wall 25 at the lower end of the main body of the outer container and the rising peripheral wall 11 of the bottom member 7. is not welded (it can be welded).

0012 Second example The second embodiment of the metallic vacuum double container shown in FIGS. 3 and 4 will be explained. Embodiment 1 has a bottom ring 15 and a bottom member welded to the bottom of the main body 6 of the outer container. 7 and the getter G is held between the two. That is, in this embodiment, the bottom ring 15 is formed with +-shaped getter receivers 16, 16 in its center (see Fig. 4), and this getter receiver is A structure that holds the getter G between the getter receivers 16, 16 and the recessed part 26 in the center of the bottom member 7. It is said to be constructed.

[0013] In this embodiment as well, the brazing material 9 is placed on the bottom ring 15, and the brazing material 9 is vacuum-applied. By melting in a heat furnace, the outer container main body 6 and the bottom member 7 are joined together. Next, the space 4 is sealed in a vacuum state. In this case as well, getter G maintains the vacuum for a long period of time. has the effect of

[0014] Third embodiment To explain the metal vacuum double container of the third embodiment shown in FIGS. 5 and 6, this In this embodiment, an inward flange 17 is integrally formed at the lower end of the main body 6 of the outer container. Then, brazing filler metals 9, 9, . . . are arranged on this flange 17.

[0015] In this example as well, the brazing filler metals 9, 9... are melted in the vacuum heating furnace. The space 4 between the inner container 2 and the outer container 3 is vacuum-sealed, and the gate attached to the inner surface of the bottom member 7 is sealed. The gas acts to maintain the vacuum for a long period of time.

[0016] In addition, in each of the above-mentioned second and third embodiments, the diameter-reducing wall 25 at the lower end of the main body of the outer container Welding between the and the rising peripheral wall 11 of the bottom member 7 is omitted (even if welded together, nothing will happen). ).

[0017]

[Effect of the idea]

The metallic vacuum double container of the present invention is made of gold as shown in the claims for utility model registration. The space between the inner container and the outer container of the attribute is made a vacuum, and a getter is placed in the vacuum space. In the metal vacuum double container containing the getter, the getter directly forms part of the exterior Since it is supported by the bottom member of the container, there is no dedicated getter holding part like in conventional products. This eliminates the need for materials, which reduces the number of parts and the number of assembly steps. , which contributes to cost reduction.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of a metal vacuum double container according to a first embodiment of the present invention in an upside down state;

FIG. 2 is an exploded perspective view of the bottom of the outer container of the double-walled metal vacuum container shown in FIG. 1;

FIG. 3 is a vertical cross-sectional view of the bottom of the metal vacuum double container according to the second embodiment of the present invention when it is turned upside down.

FIG. 4 is an exploded perspective view of the metallic vacuum double container shown in FIG. 3.

FIG. 5 is a vertical cross-sectional view of the bottom of the metal vacuum double container according to the third embodiment of the present invention when it is turned upside down.

FIG. 6 is an exploded perspective view of the metal vacuum double container shown in FIG. 5.

FIG. 7 is a vertical cross-sectional view of a conventional metallic vacuum double container.

[Explanation of symbols]

1 is a metal vacuum double container, 2 is an inner container, 3 is an outer container, 4
6 is a vacuum space, 6 is the main body of the outer container, 7 is a bottom member, and 9 is a brazing material.

Claims (1)

[Scope of utility model registration request] Claim 1: A metal container in which a space (4) between a metal inner container (2) and a metal outer container (3) is evacuated, and a getter (G) is housed in the vacuum space (4). a vacuum double container (1), wherein the metallic outer container (3) is an exterior body and the getter (G) is a part of the exterior body;
(7) A metallic vacuum double container characterized by being directly supported by.