Patent ID: 6481218
Filing Date: 2002-11-19
Classification: B60K,F04B

Abstract:
Pump system for delivering cryogenic liquids that consists of a storage tank (K) for the cryogenic liquid that forms a liquid chamber (L) and a gas chamber (G) and at least one pump (2) that is arranged in a container (1), whereby container (1) is connected to storage tank (K) in such a way that a liquid level (m) can be adjusted in container (1), characterized in thata) container (1) is divided into two chambers (h, f), whereby one chamber (h) is arranged completely below gas chamber (G) of storage tank (K) and is connected via a liquid feed line (i) to liquid chamber (L) of the storage tank, while other chamber (f) is arranged above chamber (h) and at least partially also below gas chamber (G) of storage tank (K), whereby chamber (f) is connected via a gas return line (j) to gas chamber (G) of storage tank (K), b) the induction side of pump (2) is connected to chamber (h), while the pressure side is connected to a discharge point provided outside of container (1) for discharging cryogenic liquid to a consumer, c) chambers (h) and (f) are connected to one another via a connecting line (q), and d) above the open end of gas return line (j) that ends in chamber (f), a gas chamber (s) remains.