JPH0736975U - Vacuum double structure - Google Patents

Abstract

(57) [Summary] [Structure] Inner body 2 and outer body 3 fitted to the outside of the inner body 2
In the vacuum double structure in which the space 4 between the inner body 2 and the outer body 3 is evacuated, an exhaust port 5 for exhausting the air in the space 4 is provided in the inner body 2. Has been formed. [Effect] Since the exhaust port 5 is formed in the inner body 2 and is thermally isolated from the external atmosphere, even when the vacuum double structure 1 is placed in a heating atmosphere, the heat of the exhaust port 5 causes the brazing of the exhaust port 5. The attachment will not be damaged.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a vacuum double structure in which an inner body and an outer body fitted to the outer side of the inner body are joined at least at their openings, and a space between the inner body and the outer body is evacuated. It is related to the structure.

The vacuum double structure as described above is generally used as a middle bottle of a mahobin, but especially a metal one is widely used for various other purposes.

For example, it is sometimes used as a heat insulator for a heat-resistant safe, and is also used as a constant temperature container for protecting an article that is weak to heat when it needs to be placed in a heating atmosphere or a cooling atmosphere. It may be done.

Further, when manufacturing industrial products such as automobiles, data for managing the process of each product is stored in an IC, and the IC substrate is transferred together with the product. Since the IC substrate is vulnerable to heat, the IC substrate is also housed in the vacuum double structure to protect it from a heating atmosphere for baking coating during the process.

[0005]

[Prior art]

 Thus, in the vacuum double structure, an exhaust port for exhausting the air in the space between the inner body and the outer body is usually provided at the bottom of the outer body. After exhausting the air in the void, the exhaust port is closed to maintain the vacuum in the void.

[0006]

[Problems to be solved by the device]

 By the way, in the case of a metal vacuum double structure, the exhaust port is usually joined to the outer body by brazing, but in the case where the vacuum double structure passes through the heating atmosphere as described above. , The heating atmosphere may damage the brazing of the exhaust port, losing the true air in the void and degrading the heat insulation.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a vacuum double structure in which brazing of an exhaust port is not damaged by a heating atmosphere.

[0008]

[Means for solving the problem]

 Thus, according to the present invention, the inner body and the outer body fitted to the outer side of the inner body are joined at at least their openings, and the space between the inner body and the outer body is evacuated. In the vacuum double structure, an exhaust port for exhausting the air in the void is formed in the inner body.

[0009]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of the present invention and shows a metal vacuum double structure 1 used as a heat insulator of a heat-resistant safe.

In this vacuum double structure 1, 2 is an inner body, 3 is an outer body, and the inner body 2 and the outer body 3 are welded and joined at the opening, The space 4 with the outer body 3 is in a vacuum.

The inner body 2 and the outer body 3 of the vacuum double structure 1 are formed by welding cylindrical bodies 7 and 8 and bottom bodies 9 and 10, respectively, and the bodies 7 and 8 are respectively empty. Annular ribs 11 and 12 projecting in the space 4 are provided to be reinforced against a vacuum so that the ribs 11 and 12 do not come into contact with each other even if the space in the space 4 is narrow. In addition, they are formed alternately.

In FIG. 1, reference numeral 5 denotes a tip tube as an exhaust port. The tip tube 5 is brazed to the inner surface of the inner upper corner of the inner body 2 and projects inward. Then, the air in the void 4 is exhausted from the tip tube 5, and the inside of the void 4 is kept in a vacuum by hermetically sealing and cutting.

Reference numeral 6 is a protective cover for protecting the tip tube 5, and a silicone rubber sealant is provided on a holding plate 13 that is protruded by welding to the upper and side surfaces of the body 7 of the inner body 2 and the bottom body 9. It is attached through 14.

FIG. 3 shows another example of the mounting structure of the protective cover 6, in which ribs 15 are projected on the inner surfaces of the body 7 and the bottom body 9 of the inner body 2, and the ribs 15 are made of silicone rubber. The protective cover 6 is attached via the sealant 14.

In this example, the rib 15 projecting from the inner surface of the body 7 is formed by projecting the annular rib 11 inward, but the rib 15 is different from the rib 11. It may be formed in the above.

FIG. 4 shows another embodiment of the present invention, which is a general foam bottle type heat insulating container, in which a tip tube 5 is provided so as to project from the inner surface of the bottom of the inner body 2. It is protected by a protective cover 6.

[0017]

[Action]

 In the present invention, the heat between the outside and the inside is shielded by the heat insulating property of the vacuum double structure 1, and even when the vacuum double structure 1 passes through a high temperature heating atmosphere, the heat is transferred to the inside. Never be done.

Further, since the exhaust port is formed in the inner body 2 and is in the vacuum double structure 1 which is shielded from external heat, the brazing part of the exhaust port is isolated from the external heating atmosphere and protected. It is being touched.

[0019]

[Effect of device]

 Therefore, according to the present invention, even when an article sensitive to heat is placed in a heating atmosphere, the article can be protected from the heating atmosphere and deterioration or thermal damage due to heat can be prevented.

Further, since the brazing of the exhaust port is also isolated from the heating atmosphere, it is possible to effectively prevent the situation where the heating atmosphere damages the brazing, lowers the degree of vacuum, and lowers the heat insulating property. it can.

The present invention is not limited to the one having the function of protecting the inside from the external heating atmosphere as described above, and can be applied to a normal bottle and the like, and the tip tube Since 5 does not project outwards, the bottle can be made more compact.

However, when the present invention is applied to a vacuum bottle, if the tip tube 5 directly touches the content liquid, the sealed portion of the tip tube 5 may be damaged due to corrosion or the like, and the degree of vacuum may decrease. Therefore, it is necessary to cover the periphery of the tip tube 5 with the protective cover 6 in a watertight manner to surely prevent the content liquid from entering.

Further, the invention of the present application is not limited to the container-shaped structure as described above, but may be applied to other-shaped structures such as a heat insulating pipe utilizing a vacuum double structure.

Further, in the above description, the vacuum double structure made of metal has been described, but it is also possible to apply to a vacuum double bottle made of glass, and the mahobin can be made more compact. it can.

[Brief description of drawings]

FIG. 1 is a central longitudinal sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a central longitudinal sectional view of a main part showing another example of the mounting structure of the protective cover 6 in the embodiment of FIG.

FIG. 4 is a central longitudinal cross-sectional view showing another embodiment of the present invention 1 vacuum double structure 2 inner body 3 outer body 4 void 5 tip tube

Claims (1)

[Scope of utility model registration request] 1. An inner body (2) and an outer body (3) fitted to the outer side of the inner body (2) are joined together at least at their openings to form the inner body (2) and the outer body (3). In a vacuum double structure in which a space (4) between the space (3) and the space (3) is evacuated, an exhaust port (5) for exhausting air in the space (4) is formed in the inner body (2). Vacuum double structure characterized by being