COOLING OF A DEWAR VESSEL WITH ICE FREE COOLANT AND FOR SHORT SAMPLE ACCESS

WIPO Patent Application WO/2014/016404

A3

The present invention relates to a pump (15) for pumping a coolant (9) within a Dewar vessel (1) and to a corresponding Dewar vessel (1) for storing samples in a coolant (9). The Dewar vessel (1) comprises a thermally insulated reservoir (3) for the coolant (9) and a sample vessel (11) provided separately and arranged in the thermally insulated reservoir (3). The reservoir (3) is connected to the sample vessel (11) in such a way that the level of coolant (9) is constant in the sample vessel (11). Pump (15) may help in keeping the level of coolant (9) in the sample vessel (11) constant. For this purpose the pump (15) comprises a chamber (17) with an inlet (19) and an outlet (21), a closing element (23) and a pressure increasing device (25). Therein, the inlet (19) is connectable to the reservoir (3) and the outlet (21) is connectable to a sample vessel (11) of the Dewar vessel (1). The chamber (17) is adapted to fill with coolant (9) through the inlet (19) by gravity and the closing element (23) is adapted to automatically close the chamber (17) when it is full of coolant (9). The pressure increasing device (25) is adapted to increase the pressure within the chamber (17), after the chamber (17) is closed, until the coolant (9) is released through the outlet (21).

JP2019117868	COOLING DEVICE FOR SUPERCONDUCTING CABLE AND TEMPERATURE RISING METHOD
WO/1997/006392	BEVERAGE CAN COOLING SYSTEM
JPH0734306	[Name of device] Cooling device

CIPRIANI FLORENT (FR)
FELISAZ FRANCK (FR)

PCT/EP2013/065788

May 01, 2014

July 26, 2013

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EMBL HEIDELBERG (DE)

F25D3/10; F25B1/00

US20090129946A1	2009-05-21
US4566283A	1986-01-28
DE10039214A1	2002-02-21

MAIWALD PATENTANWALTS GMBH (München, DE)

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