摘要:
It is described a vacuum stabilizing device comprising a holder (100) impermeable to gases, in the form of a box open at its upper end, with edges folded and prolonged outwards to form a peripheral "wing" (104); a getter material (110) in the lower part of holder (100) inside a lower volume (II) defined by the bottom of the holder and by a lower septum (120), permeable to gases; a dryer material (130) is an upper volume (I) defined by said septum (120) and by a second upper septum (140) permeable to gases. A film (150) of a material impermeable to gases is hermetically fixed to the external part of wing (104), as to seal the whole device. A few methods for producing the device are also described.
摘要:
An improved high-capacity getter pump, comprising a plurality of porous sintered piled-up annuli made from a non-evaporable getter material and having: i) a first planar surface having a central hole; ii) a second planar surface, having a broader central hole, parallel to said first surface and spaced therefrom by a distance "d" of 1-10.5 mm; iii) a third intermediate planar surface, interposed between said first and second surfaces, spaced from said first surface by a thickness "t" of 0.5-5.0 mm and having a hole coincident with the hole of said first surface; wherein the first surface of a subsequent annulus is in contact with the second surface of a preceding annulus and wherein the first surface of a subsequent annulus is spaced from the third surface of a preceding annulus by a gas conductance having a height "c" of 0.5-10 mm.
摘要:
An improved high-capacity getter pump, suitable for creating and maintaining the vacuum, comprising a plurality of porous sintered blades made from a non-evaporable getter material and having a first main surface; a second main surface, parallel to said first surface and spaced therefrom by a thickness of 0.5-5.0 mm; wherein said blades are arranged in a housing and are separated from each other by a gas conductance, with the adjacent surfaces of adjacent blades being spaced from each other by a distance of 0.5-10 mm.
摘要:
A gas fed water-heater has a double wall container (1) inside of which are arranged a burner (2) and a tank (3) of the water to be heated. At least in the portion (5′) adjacent to the burner (2) of the interspace (5) between the two walls of the container (1), a thermoinsulating system is placed comprising an inner layer (6) of glass wool or rock wool and an outer layer (7) formed of at least one vacuum panel, which is formed by an envelope which encloses inert material powder having an average particle size of less than 100 nanometers.
摘要:
A combination of getter materials particularly suitable to maintain vacuum in devices which cannot be heated at temperatures higher than about 200° C. The getter comprises: a mixture MO/Pd between an oxide of a transition metal MO chosen among cobalt oxide, copper oxide or their combinations and metallic palladium, wherein the latter is present up to about 2% by weight; and a moisture sorbing material. In some applications it is possible to add to this combination a barium- and lithium-based alloy, preferably BaLi4. Getter devices for containing such a combination are also described.
摘要:
A lithography apparatus (10) is disclosed using extreme UV radiation and having a hydrocarbon sorbing member comprising a getter material arranged in the process chamber (13) of said apparatus.
摘要:
A lithography apparatus (10) is disclosed using extreme UV radiation and having a hydrocarbon sorbing member comprising a getter material arranged in the process chamber (13) of said apparatus.
摘要:
A heat insulating system for tubular bodies includes at least two superimposed evacuated panels (4, 4′), at least one of the panels is formed essentially by an evacuated envelope which contains a polymeric filling material inside thereof, and at least one other panel is formed essentially by an evacuated envelope which has an inorganic filler present inside thereof, in the form of powders, fibers or their mixtures. Each of the evacuated panels (4, 4′) is rolled up around a rolling axis to such that two opposed edges thereof (5, 5′) parallel to the rolling axis are mutually set side by side. The rolled evacuated panels (4, 4′) are also arranged with the edges (5) of an evacuated panel (4) being staggered with respect to the edges (5′) of another evacuated panel (4′).
摘要:
A device for maintaining a vacuum in a thermally insulating jacket is described. The device comprises a container formed of a gas-tight material, preferably aluminum, which has an opening to the atmosphere. Inside the container is a first pellet comprising a powder of a Ba-Li alloy getter material. Arranged above, and completely covering, the first pellet is a second pellet comprising a powder of a drying material, optionally including the oxide of a noble metal and a material to prevent contraction of the drier. A process for manufacturing such a device is also described in which the first pellet is obtained by compression of its constituent powders at a pressure between about 30 bar and 1000 bar.
摘要:
Improved solar collectors receiver tubes are described. The improved solar collectors receiver tubes have a getter system containing one or more getter materials in the form of pills housed a single line in a suitable holder.