DE6803560U - INSULATED CONTAINER - Google Patents

Description

DR. MÜLLER-BORiDIPL-ING. GRALFS DIPL.-PHYS. DR. MANITZ DIPL.-CHEM. DR. DEUFEL

PATENT LAWYERS

October 22, 1968 Fi / Sch - M 825

Jacques Edouard Francis Moreau

4 Rue du General de Gaulle, Saint-Leu-la-Foret (VaI d'Oise) France

and

Pierre Rene Peiret

8 Rue Philippe de Metz, Bois-Colombes (Hauts-de-Seine)

France

Insulated container

Insulated containers of the Dewar type are well known. These vessels have two silver-plated ones Glass walls, the volume enclosed between these two walls being under vacuum.

These containers are very effective but also very fragile. They can also be due to the atmospheric Pressure can only be given a cylindrical or spherical shape, and also the dimensions must be relatively low.

There are also already isothermal containers known, which are generally made of unbreakable

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Material existing double wall are formed, which is filled with an insulating material.

These containers are much less effective than the containers listed above, but they are practical indestructible.

In particular, the aim of the invention is to provide a simple and inexpensive B & ii container in which the effectiveness the first-mentioned container is united with the resilience of the last-mentioned container.

It is also the aim of the invention to provide an insulated container which ensures greater thermal insulation as the best of the insulated containers known to date.

The insulating container according to the invention is generally characterized characterized in that it is made of a particularly fragile material such as glass, ceramic or a corresponding Material has existing shell, of which at least one wall - »** at least for good with an isolating Protective covering is provided.

According to a preferred embodiment, this consists of |

Shell made of a Dewar vessel and this vessel is immersed in a mass of expanded synthetisdrem material, which forms the insulating protective covering, and preferably is this mass of expanded synthetic material inside a sheath made of relatively solid Material included.

Since the Dewar vessel is completely embedded in a block of semi-solid foam in this way, it only has

to guarantee its isolation fiSktion. It is therefore no longer required, special glasses that always are expensive to seek help. The one enclosed between the dewar and the inner part of the casing Foam is sufficiently resilient to accommodate the expansion of this inner part and onto the dewar only very progressively to convert part of the temperature from that in the inner part prevails. This foam can also have a variable stiffness.

In addition, it should be pointed out that if the Dewar vessel ruptures due to a violent shock would go, no glass part would come off and nothing else would become visible, and indeed even when the device would be used or shaken, as the mass of expanded material, in which the Dewar vessel according to the invention is embedded, generally very well in all parts of this The vessel sticks. It is therefore not certain whether the user perceives such a break immediately. Only the effectiveness of the container is impaired, but despite a considerable loss of insulation the container retains insulating properties, all the more so than in spite of the rupture of the vessel that of The silver-plated double reflector formed in the vessel shows all of its properties as does the mass expanded material which surrounds the vessel. The container can thus continue to operate satisfactorily for a long time Render service.

The advantages listed above are largely retained if a Dewar vessel is used instead

Another type of vessel made for example glass, ceramic or metal is used to make special Sufficient applications, such as those in laboratories in the glass industry or in mirror factories can occur, and / or if only the outer surface of this container with eir. r insulating Protective covering is provided. In every case it will such a fragile container as far as possible only its most essential function, namely the Insulation, resistance to corrosion, etc. have to meet, and the cladding will the other functions, and in particular those relating to mechanical strength! ' 3it related function take over.

To produce an insulating container according to the invention are in the interior of a shell made of fragile Material, such as a dewar, glass container, ceramic container, or other material, the synthetic components required to form an expanded material are introduced, then a jacket made of relatively solid material is placed over this container, which one Inner wall in the form of an engaging in the container Has fingerlings, and has a tubular outer wall continuously merging into the inner wall, wherein the inner wall and the outer wall lie on both sides of the wall of the container without closing it touch.

Further details and advantages of the invention will be provided ^ m following with reference to the drawing, for example

680356

described, the single figure of which is an axial sectional view of an insulating container according to the invention shows.

This container has a Dewar vessel 10, i.e. a vessel with two silver-plated glass walls 12, between which there is a certain vacuum.

This Dewar vessel 10 is completely in one mass

13 made of expanded synthetic material immersed and this mass is itself inside a sheath

14 made of a material exhibiting sufficient strength.

This casing 14 has an inner wall 15 in the form of a finger cot, which is the actual Defines the useful internal volume of the container according to the invention, as well as a tubular outer wall 16, which with the inner wall I5 at the level of the filling neck 17 of the container is connected.

The outer wall 16 is closed at its lower part by a bottom 18, the diameter of which is greater than is the outer diameter of the dewar 10.

The container can be completed by a lid 19 forming a cup.

It should be noted that no point on the dewar 10 is in contact with the jacket 14, neither inside nor outside, whereby the container a very high resistance to mechanical shocks and / or heat shocks is conferred.

6802560

The casing 14 can, of course, be manufactured in various ways. So it is possible to them made of different materials, which by combining

However, it can also be made from a single piece e.g. by molding under vacuum.

According to the drawing, the inner wall 15 and the outer wall 16 of this casing has various elements. Preferably there is the inner wall 15 made of polycarbonate, a material that meets the requirements of the various products that are typically preserved in insulated containers, very well corresponds, namely is resistant to chemical products or food, to extreme temperatures withstands, etc. The outer wall 16 can for example be made of low density polyethylene.

If for the entire sheath or just part of the sheath 1 # metal or a metallic cladding is used, the conductivity at the level of the filler neck 10 will always remain very poor, and therefore at this point the metal will be reduced or limited.

What that used to form the expanded mass I5 As far as synthetic material is concerned, it will preferably be a mass based on polyurethane, as this material has one of the best coefficients of insulation, in addition to making the container easy to manufacture has among the known materials of the same type.

In the following a preferred embodiment is briefly the manufacture of such a container "is described.

With the Dewar vessel 10 held vertically, for example with the aid of a tripod adjustment device, in the inside of this vessel contains the synthetic components required to form an expanded material brought in. This process, which can be carried out using a gun with a double nozzle, is fast and requires little material or substance. The one resulting from the expansion of this substance Foam occupies a volume that is forty times the volume of the starting ingredients can. Merely as an example, the height of this is shown in the drawing by means of the dash-dotted line 20 synthetic components at the bottom of the Dewar vessel 10 indicated.

The chemical reaction to generate the desired foam is then triggered.

As soon as this chemical reaction starts and the foam formed in the Dewar begins to rise, the previously completed casing 14 is placed over the Dewar vessel 10, wherein the walls 15 and 16 of this casing on both sides the wall of the Dewar vessel 10 without touching it. This is shown in the drawing.

The foam formed rises to the extent of its formation in the Dewar vessel, namely between it Vessel and the inner wall 15 of the jacket 14. Since he is provided in sufficient quantity, he transfers

the free edge of the vessel 10 and comes after down into the annular volume between this vessel and the outer wall 16 of the casing 14 to the enclosed by the sheath ^ space is completely filled. This one filled out in such a way Space is large enough so that no large tolerances are required during assembly and that above all the foam can, under the best conditions, fulfill all the functions that are assigned to it, and in particular the function to enter in the manufacture of the container in an active manner, or. to participate.

This foam has an effective beneficial effect on production and with regard to mechanical behavior of the container, as it fits very well on all walls of both the Dewar vessel 10 and the casing 14 is liable.

When the foam arrives at the bottom of the jacket 14, the container is inverted and the foam is left trespass and then solidify.

Then only the excess foam has to be made flat and the base 18 on the casing 14 by suitable means, for example by gluing or welding or soldering.

According to an advantageous development of the invention, this excess foam is used to produce the used to close the container stopper, especially in the event that it is a container for holding food. For this purpose, under the sheath

a suitable mold attached, preferably pre-equipped with the jacket chosen for the plug will. For the removal of the air and for the new supply of foam is obvious in this form an opening is provided. For the simultaneous production of the container and stopper, it is therefore necessary to use the Separate the container from its stopper and then glue the bottom 18 as before.

Of course, this embodiment is only an example.

For example, the container described above can not only be manufactured in such a way that it is built around the Dewar vessel in the manner described, but it can also be in the Dewar vessel the insulating material of an isothermal container can be introduced. This method has no difficulty whatsoever when the insulating material is sufficiently brittle or powdery. However, there must be dangers the breaking during production and then the subsequent compression of the material are accepted will. In addition, this process is not very easy to carry out industrially.

Other methods can be used. For example can be made of rubber or synthetic material in and around the dewar to be ordered. These hinge are preferably circular, and it is therefore possible to use the Dewar vessel put into these rings by rolling them around themselves.

The protective covering of the dewar can also be carried out by Pouring or by at least partially covering the surfaces of this vessel with one or more layers

Or which

Coverings are formed, which / by coating, formation an overmold can be applied by means of a casting, coating, plastic enameling, etc., or can. The materials of these claddings, which are more or less flexible and tight, can be under the most diverse materials can be selected, and in particular the synthetic materials such as the elastomers, epoxy resins and others.

In the case of the sheathing of the Dewar, e.g. by means of An expanded synthetic material, optionally in a form, can attach to the surface of the material or fabric form a skin that may itself have a covering that is sufficiently strong to even the To form casing 14 of the container according to the invention.

The one associated with the dewar or any other container made of fragile material such as glass Protective coating may or may not adhere to the container.

- Protection claims -

Claims (8)

- 11 - Claims for protection 1. Insulating container, characterized by - ^ a sheath (10), in particular a sheath (10) made of fragile Material such as glass, ceramic or another substance, of which at least one of the walls (12) at least partially with an insulating protective cover (13) is provided. 2. Insulated container according to claim 1, characterized in that the casing (10) is a Dewar vessel, i.e. a double-walled vessel made of silver-coated glass, the volume of which, located between the walls (12), is under vacuum. 3. Insulated container according to claim 1 or 2, characterized in that the shell (iO) in a mass of expanded synthetic material is embedded, which forms the insulating protective covering (13) forms. 4. Insulated container according to claim 3, characterized in that the mass of expanded Material is enclosed in a sheath (14) of relatively strong material that is attached to the sheath (10) is not in contact. 5. Iaiier container according to claim 4, characterized in that the casing (14) on both sides of the shell (10) an inner wall (15) »which has a bottom at the inner end and a bottom at the outer end Forms filler neck (17), as well as a continuous in 680Ö560 tubular outer wall extending over this inner wall (16) which is closed at the end opposite the filling neck (17) by a matching base (18) is, the diameter of which is greater than the outer diameter of the sheath (10). 6. Insulated container according to claim 5 »characterized in that the inner and outer walls (15,16) of the sheath (14) from different Elements that are at the height of the neck (I7) are connected to each other. 7. insulating container according to claim 1, characterized in that the insulating protective covering consists of rings. 8. insulating container according to claim 7 »characterized in that the rings of the insulating The protective cladding is circular.