JPH05193678A - Part attaching structure for vacuum insulating container - Google Patents

Abstract

PURPOSE:To attach a part to the surface of a wall in a vacuum insulating container via a reinforcing plate with the reinforcing plate hidden inside the wall and without causing the vacuum destruction due to the part welding heat. CONSTITUTION:A vacuum insulating container 11 consists of a structural body 13 having inner and outer walls and a vacuum layer 16 formed therebetween. A reinforcing plate 17 is attached to the vacuum layer side of the wall 14 in the structural body 13 by fillet welding the plate periphery thereto. A part 12 is welded to the opposite side of the wall 14 from the reinforcing plate attached place.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a component mounting structure for a vacuum heat insulating container made of metal.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 7, a vacuum heat insulating container of this type is composed of a structure 1 having inner and outer double walls, and an inner wall 2 and an outer wall 3 constituting the structure 1. A vacuum layer 4 that forms a heat insulating function is formed between and. When a component 5 such as a handle or a leg is attached to the wall surface of the wall forming the structure 1 on the side opposite to the vacuum layer, for example, the surface of the outer wall 3, at the attachment position of the component 5 on the surface of the outer wall 3,
The reinforcing plate 6 is attached in advance via the spot welds 7. Then, after the space between the inner wall 2 and the outer wall 3 is evacuated to form the vacuum layer 4, the component 5 is attached to the surface of the reinforcing plate 6 via the fillet weld portion 8. By using this reinforcing plate 6, even if a thin plate material is used for the outer wall 3,
It is possible to weld the component 5 without breaking the vacuum of the vacuum layer 4 after evacuation.

[0003]

However, according to such a conventional component mounting structure, since the reinforcing plate 6 remains on the surface of the vacuum heat insulating container, functional and external problems may occur. When the spot welded portion 7 of the reinforcing plate 6 and the fillet welded portion 8 of the component 5 coincide with each other, the outer wall 3 and the reinforcing plate 6 are integrated at this portion,
The welding heat of the component 5 may be directly transmitted to the outer wall 3 to cause a vacuum break. However, if the plate thickness of the outer wall 3 is increased so that the parts 5 can be welded without fear of vacuum breakage, the weight and cost of the vacuum heat insulating container increase.

Therefore, the present invention solves such a problem, prevents the occurrence of vacuum break during welding without increasing the thickness of the wall body, and prevents the reinforcing plate from remaining on the surface of the container. The purpose is to

[0005]

In order to achieve the above object, the present invention provides a vacuum heat insulation container having an inner and outer double wall structure and a vacuum layer formed inside the double wall. A reinforcing plate is attached to the wall of the wall body constituting the wall on the vacuum layer side by fillet welding around the entire circumference, and parts are attached by welding to the surface of the attaching portion of the reinforcing plate that is not the vacuum layer side.

[0006]

With this structure, since the reinforcing plate does not remain on the wall surface, ie, the surface of the wall body that is not on the vacuum layer side, the functional and external problems caused by the reinforcing plate are prevented. Further, the reinforcing plate and the wall body are fillet-welded all around, and the inner portion of the welded portion does not integrate the reinforcing plate and the wall body as in the case of performing spot welding. .. Therefore, in the part covered by the reinforcing plate, there is no risk of vacuum breaking due to the welding heat of any part where the part is attached, and it is not necessary to increase the plate thickness of the wall body.

[0007]

【Example】

Example 1 FIG. 2 is a schematic diagram showing a part mounting structure according to the present invention.
The state where the component 12 is attached to the inner wall surface of the vacuum heat insulating container 11 is shown. The vacuum heat insulating container 11 is a box-shaped container made of metal, and is composed of a double-wall structure 13 having an inner wall 14 and an outer wall 15, and a vacuum layer is formed between the inner wall 14 and the outer wall 15. ing. Reference numeral 17 is a reinforcing plate provided on the vacuum layer side at the mounting location of the component 12.

FIG. 1 shows the component mounting structure in FIG. 2 in detail. As shown in the figure, a reinforcing plate 17 is attached to the wall surface on the vacuum layer side at a predetermined portion of the inner wall 14 by fillet welding all around. Then, on the surface of the inner wall 14 on the side where the reinforcing plate 17 is not attached on the vacuum layer side, the component 12
Are attached by welding.

To mount the component 12, first, the inner wall
Before evacuating between the outer wall 14 and the outer wall 15, a reinforcing plate 17 is previously fillet-welded on the wall surface of the inner wall 14 to be the vacuum side. 18 is the weld. Next, the inner wall 14
The vacuum layer 16 is formed by evacuating the space between the outer wall 15 and the outer wall 15, and then the component 12 is welded to the surface of the mounting portion of the reinforcing plate 17. 19 is the weld.

According to this structure, the reinforcing plate 17 is formed on the inner wall.
Since it does not remain on the surface of 14, the occurrence of functional and appearance problems due to it is prevented. The space between the reinforcing plate 17 and the inner wall 14 is sealed by the reinforcing plate 17 and the entire circumference fillet weld portion 18 around the reinforcing plate 17, and the reinforcing plate 17 and the inner wall are inside the entire circumference fillet weld portion 18. There is no part where 14 and 14 are integrated, and there is a minute air layer in every part, which causes thermal resistance. Therefore, even if the parts 12 are welded, there is no risk that the vacuum layer 16 will be broken by the welding heat, and it is not necessary to increase the plate thickness of the inner wall 14. Example 2 As shown in FIG. 3, a heat insulating material 20 made of ceramic paper or the like is interposed between the reinforcing plate 17 and the inner wall 14. Other configurations are similar to those of FIG.

The heat insulating material 20 greatly reduces the heat input to the reinforcing plate 17 when welding the component 12, and therefore has a great effect of preventing the vacuum break of the vacuum layer 16. This configuration is effective when applied when it is necessary to lengthen the leg length of the welded portion 19 to increase the strength of the mounting portion of the component 12 or to apply a larger current to increase the welding speed. Target. Example 3 As shown in FIG. 4, a recess 21 is formed on the surface of the reinforcing plate 17 on the inner wall 14 side, and this recess 21 serves as an air layer. Other configurations are similar to those of FIG. The air layer in the recess 21 functions similarly to the heat insulating material 20 in FIG. Embodiment 4 As shown in FIG. 5, a notch hole 22 is formed in the inner wall 14, and a reinforcing plate 17 is attached to the inner wall 14 by fillet welding around the entire circumference so as to close the notch hole 22 from the vacuum layer side. There is. Notch hole
The component 12 is attached to the surface of the reinforcing plate 17 at 22 by welding. The plate thickness of the reinforcing plate 17 is determined by the required mounting strength of the component 12. For example, when SUS304 stainless steel is used as the reinforcing plate 17 and the component 12 is attached by TIG welding, the thickness thereof needs to be about 3 mm or more.

In order to mount the component 12, first, the inner wall
A notch hole 22 is formed in advance at a predetermined position of 14, and a reinforcing plate 17 is arranged on the vacuum layer side of the inner wall 14 so as to close the notch hole 22, and this is attached by fillet welding all around. Next, the space between the inner wall 14 and the outer wall 15 is evacuated to form a vacuum layer 16, and then the component 12 is welded to the surface of the reinforcing plate 17.

According to this structure, the reinforcing plate 17 does not remain on the surface of the inner wall 14 as in the case of each of the above-mentioned embodiments, so that there is no risk of causing functional and external problems.
Moreover, if the reinforcing plate 17 is thick, the vacuum layer 16
Even if the component 12 is welded to the reinforcing plate 17 after the formation, the vacuum break does not occur, and it is not necessary to increase the plate thickness of the inner wall 14. Example 5 As shown in FIG. 6, fillet welding of the reinforcing plate 17 and the inner wall 14 in FIG. 5 was performed between the reinforcing plate 17 and the inner peripheral edge portion of the cutout hole 22 of the inner wall 14. It is a thing. Other configurations are similar to those shown in FIG.

[0014]

As described above, according to the present invention, since the reinforcing plate does not remain on the surface of the wall body, there is no problem in terms of function and appearance due to the reinforcing plate and the reinforcing plate and the wall body. Is fillet welded all around, and there is no part where the reinforcing plate and the wall are integrated in the part inside the welded part.Therefore, in any part where the reinforcing plate covers, Even if a component is attached, there is no risk of a vacuum breaking due to the welding heat thereof, and therefore it is not necessary to increase the plate thickness of the wall body, and the weight and cost of the vacuum heat insulating container can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view showing a component mounting structure according to an embodiment of the present invention.

FIG. 2 is a perspective view of a vacuum heat insulating container to which the component mounting structure of FIG. 1 is applied.

FIG. 3 is a sectional view showing a component mounting structure according to another embodiment of the present invention.

FIG. 4 is a sectional view showing a component mounting structure of still another embodiment of the present invention.

FIG. 5 is a sectional view showing a component mounting structure according to still another embodiment of the present invention.

FIG. 6 is a sectional view showing a component mounting structure of still another embodiment of the present invention.

FIG. 7 is a cross-sectional view showing an example of a conventional component mounting structure.

[Explanation of symbols]

 12 Parts 13 Double wall structure 14 Inner wall 15 Outer wall 16 Vacuum layer 17 Reinforcement plate 18 Weld

Claims (1)

[Claims] 1. An inner and outer double wall structure is formed, and
In a vacuum heat insulation container in which a vacuum layer is formed inside these double walls, a reinforcing plate is attached to the wall of the wall forming the double wall on the vacuum layer side by fillet welding all around, and the reinforcing plate is attached. A component mounting structure for a vacuum heat insulating container, characterized in that a component is mounted by welding on a surface other than the vacuum layer side at a location.