DE1618532U - VESSEL MADE OF FOAM-SHAPED PLASTIC FOR STORAGE OF COOLANT FOR LOW TEMPERATURES. - Google Patents

Description

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BADISCHE ANILIN- & SODA-FABRIK (IoG _o Farbenindustrie Aktiengesellschaft "In Dissolution")

Our reference : Gr ₀ M ₀ 312 »H / Schr <>

Lud wigs hai'en (Rhine), November 17th 1950

Vessels of foam-plastic material for the storage of cooling means for low temperatures _o

For storing coolants for low temperatures, like ZoB "solid carbon dioxide, liquid air, etc." is used in the bezel of double-walled vessels on the slas, in which the walls are provided with a reflective coating and the cavity between them is evacuated. Such vessels are in use in laboratories under the name "Dewar vessels". These glass vessels are not only sensitive to impact, but they also tend to burst as a result of sudden cooling, which is unavoidable when filling the coolant Internal tension in the glass ο Due to the lack of air in the Shell area easily injuries caused by the occurring splinters »It is therefore common to use such vessels with a To enclose protective sheath to protect them from damage and the people around them from injuries preserve »In the laboratory, the coolant should only be poured into" -! ewar vessels "with protective goggles on ^,

The invention relates to containers for the storage of cooling means for low temperatures that are free from these defects "These vessels are double walled formed of plastics and the hollow space between the ft'änden is provided with a plastic filled sohaumförmigen _o Suitably, the seams are air tight verschweissto

The illustration shows a simple embodiment of the Ge-'50 -2-

PA.75S06MM1.5B

~ 2 ~ G ₀ M ₀ 312

container that can be modified as required »The cross-section of the vessels can be rectangular, oval or round. In the laboratory, it has proven ala advantageous, the outer side walls upwards slightly thereby forming to verlängernj a tape ^ which prevents the flowing away in the foam over the coolant "One can also attach Sraggriffe on the sides and the S-efäss .by close a cover _o Plates, pellets or appropriately shaped injection molding compounds made of polyvinyl chloride, polyethylene, phenol or urea-formaldehyde condensation products or other plastic compounds are suitable for manufacturing the G-vessels however, you can also use any other porous plastics with poor thermal conductivity

The insulating effect of these plastic vessels is "at least the same as that of the ^M Dewar vessels" made of glass if the porous intermediate plastic layer is about 5 cm thick but must, if necessary, seal the outward pores at the boundary surfaces so that there are plastic layers that are closed on the outside ο

These plastic cooling vessels have compared to such several advantages made of glass:

Io They are considerably more break-proof aJla. Glass vessels, therefore a protective jacket _{or similar is not necessary}

2ο The source of danger caused by the evacuated jacket the glass vessel falls away "

3ο Preparing for the production of larger plastic vessels

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Claims (5)

& 7 58.06 W & U-SUN -5- QoMo 312ο no difficulties, while larger ^H Dewar receptacles ^M made of glass are difficult to produce «, 4o you are not restricted as in glass containers on the ahmde form, yielding purpose requires the shape of the cooling vessel can select _o 5 ο By changing the thickness of the insulation layer you can see adapt the insulation effect to the respective requirements » Protection claims ". Io vessels for storing coolants for low (Eem *) temperatures, characterized in that the vessels are made of double-walled plastic and the cavity between the walls is filled with a foam-shaped plastic _{or the like} 2ο vessels according to claim 1, characterized in that ■ the whole container is made of a dimensionally stable foamed plastic and which are sealed to the outside through pores, so that the outside closed plastic layers are present _o BADIAN AKILIM & SODA FABEII Drawing,"