초록 ▼

A cooling chamber has an interspace between the structure defining the work chamber and coolant vessel on the one hand, and the outer insulating vessel on the other hand to provide better thermal insulation. The work chamber is disposed above the coolant vessel and has apertures formed in the base w

A cooling chamber has an interspace between the structure defining the work chamber and coolant vessel on the one hand, and the outer insulating vessel on the other hand to provide better thermal insulation. The work chamber is disposed above the coolant vessel and has apertures formed in the base wall thereof so that the vaporized coolant flows directly into the work chamber. The consumption of coolant is minimal and the cooling chamber is of simple configuration is that it can be manufactured economically.

대표청구항 ▼

A cooling chamber for processing a specimen for microscopic and electron-microscopic investigations comprising: an insulating vessel having an inner wall surface defining a receiving cavity; coolant vessel means for holding a coolant therein disposed in said cavity and having an outer wall surface a

A cooling chamber for processing a specimen for microscopic and electron-microscopic investigations comprising: an insulating vessel having an inner wall surface defining a receiving cavity; coolant vessel means for holding a coolant therein disposed in said cavity and having an outer wall surface adjacent said inner wall surface; a working chamber for processing the specimen, said working chamber being arranged above said coolant vessel means and having a base defining an apertured interface between the interior of said coolant vessel means and said chamber so as to permit vaporous coolant to pass from said coolant vessel means into said working chamber thereby filling the latter; a plurality of spacers arranged at preselected locations between said wall surfaces for supporting said coolant vessel means in spaced relationship to said inner wall surface so as to cause said wall surfaces to conjointly define a space therebetween for thermally insulating said coolant vessel from said insulating vessel; and, coolant supply means for supplying vaporized coolant to said work chamber.