RU1822737C - Thermos flask - Google Patents

Abstract

Usage: in everyday life to maintain the temperature of the products. Summary of the invention a thermos contains two coaxially connected vessels at the neck made of anticorrosive metal, the neck wall of one of which is made in the form of a spiral bellows, thermal insulation is placed in the gap and a two-wall cover forms between the walls sealed cavity In this case, the wall of the lid adjacent to the bellows part of the neck is also made in the form of a spiral-shaped bellows, the configuration of which is similar to the gonfig throat bellows throat. 5 silt

Description

The invention relates to the satisfaction of human needs.

The aim of the invention is to increase the reliability of a thermos, increase its thermo-insulating properties and reduce specific gravity while maximizing the use of useful volume.

In FIG. 1-5 presents various options for structural solutions made in accordance with the invention.

All variants have a cover 1 and a body of two thin-walled vessels 2-3, coaxially placed relative to each other and fastened (for example, by soldering, welding, gluing) at the neck. Shells (walls) are made of anticorrosive material (stainless steel) or alloy, the gap between them is either evacuated, or filled with thermally insulating gas and sealed. One of the shells

the neck (internally, as in FIGS. 2 and 3 or externally, as in FIGS. 4 and 5) is made in the form of a spiral-shaped bellows, the second shell of the neck is made smooth.

The lower parts of the shells (internal and / or external) are made with thickenings 4 and 5, which simultaneously provides the rigidity of the inner shell relative to the outer and the rigidity of the whole thermos as a whole. Between the shells in the lower part is placed an elastic gasket 6, which serves to further stabilize the position of the shells relative to each other.

The covers are made in the form of either a glass-like vessel (Figs. 1-4) or saucers (Fig. 5) and can either be screwed into the neck (Figs. 1-3) or screwed onto it (Figs. 4 and 5).

The cover is made similar to the case of anticorrosive metal in the form of a two-shell sealed vessel with

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thermally insulated space between the shells. That cover of the cover (internal or external) that contacts the bellows of the housing is also made in the form of a corresponding bellows.

The technology for making the lid is similar to the technology for making the case.

The space inside the lid is integral with the space inside the housing, which ensures the most complete use of the volume of the thermos.

The implementation of the lid in the form of a thermally insulated vessel, ensuring the same gap between the shell and lid shells, provides the conditions for minimal heat loss over the entire volume of the thermos and gives it the properties of increased thermal insulation.

The sealing of the thermos is ensured by the spring properties of the thin metal shells, the bellows of the cap and the neck contacting each other.

Additional sealing can be provided by means of an elastic gasket placed on the bottom of the lid from a material that does not emit harmful substances and retains these properties at high temperatures (up to 100 ° C).

Embodiments of the thermos are distinguished by the design of the neck and cover.

In the thermos of FIG. 1, the casing in the upper part (neck), where the lid 1 is screwed, is formed of two layers superimposed on one another with a spiral corrugation molded into them for screwing a hollow glass-like two-layer with a vacuum space) lid.

In FIG. 2, the inner case in the contact zone of the lid is somewhat separated from the outer one and the spiral corrugation for screwing in the lid is made only on the inner layer (in its upper zone). This increases the thermal protection of the thermos in the area of connection with the lid.

In FIG. 1-3 shows a variety of designs of metal thermoses in the form of cylinders with a screw-in heat-insulating lid-cup (Fig. 3) and with a screw-in heat-insulating lid-cup (Fig. 4).

In FIG. Figure 5 shows a variant of a thermos jar with a two-layer saucer lid, fixed by means of a cam connection by turning by a small angle relative to the axis of the thermos body.

In all varieties of thermoses, covers and inner cases are made of thin-walled (0.1-0.2 mm), therefore they are very flexible and form a tight, tight joint when combining (closing)

covers with housing.

Thermos is used to store liquids and solids at low and high temperatures.

Additional positive

thermos properties are the insulating properties of the separated lid vessel (glass, saucer).

Thus, due to the increased heat resistance, tightness, effective

Using the volume, this thermos has significant advantages over the known ones.

Claims (1)

Being equipped with additional fittings (handles, a bottom, means for connecting several thermoses into a block), it can be effectively used as a household or industrial thermos. Formula of the invention Thermos containing two coaxially located with a gap, connected at the neck of the vessel, made of anticorrosive metal, the neck wall of one of which is made in the form of a spiral bellows. and placed in Thermal insulation, characterized in that, in order to reduce heat loss, the thermos is equipped with a double-walled lid with the formation of an airtight cavity between the walls, while the lid wall adjacent to the bellows part of the neck is also made in the form of a spiral bellows, the configuration of which is similar to the configuration of the neck bellows. 9bg / 9. “Ј - /