Degasser with vent in vacuum chamber
AssigneeAgilent Technologies, Inc.
InventorManfred Berndt
Life of this patent
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Abstract
A degassing apparatus (27) for degassing a liquid (240) comprises a vacuum chamber (200), a liquid conveyance member (210) disposed in the vacuum chamber (200) and adapted for transporting the liquid (240), and a pump (220) adapted to evacuate the vacuum chamber (200). The vacuum chamber (200) comprises a vent (270) adapted for venting the vacuum chamber (200).
Claims20
A degassing apparatus (27) for degassing a liquid (240), the apparatus comprising:
- a vacuum chamber (200),
- a liquid conveyance member (210) disposed in the vacuum chamber (200) and adapted for transporting the liquid (240), and
- a pump (220) adapted to evacuate the vacuum chamber (200),
- wherein the vacuum chamber (200) comprises a vent (270) adapted for venting the vacuum chamber (200).
The degassing apparatus (27) of the preceding claim, comprising at least one of:
- the filter (300) is disposed at an inlet of the vent (270);
- the filter (300) comprises a sintered porous frit;
- the filter (300) comprises a sintered porous frit having a minimum pore size of about 10 μpm;
- the filter (300) comprises at least one of an activated carbon, a membrane, a microstructure, and a sieve;
- the filter (300) comprises a layered structure;
- the filter (300) comprises a layered structure of two or more of:
- an activated carbon, a membrane, a microstructure, and a sieve;
- the filter (300) is detachably coupled to the degassing apparatus;
- the filter (300) is configured as a replaceable part allowing to replace one filter (300) by another;
- the filter (300) comprises a replaceable filtering part for filtering the venting flow (275), so that one filtering part can be replaced by another.
The degassing apparatus (27) of the preceding claim, wherein
- the outlet (290) of the vent (270) and the pump outlet (265) are situated at opposing or neighboring walls in the vacuum chamber (200).
The degassing apparatus (27) of the preceding claim, wherein
- the outlet (290) of the vent (270) is situated adjacent to the pump (220) outlet.
The degassing apparatus (27) of the preceding claim, wherein
- the control unit (70) is adapted for controlling a pressure in the vacuum chamber (200) by controlling operation of at least one of the vent (270) and the pump (220).
The degassing apparatus (27) of the preceding claim, wherein
- the control unit (70) is adapted for controlling the pressure in the vacuum chamber (200) to be maintained at a given vacuum level.
The fluid separation system (10) of the preceding claim, further comprising at least one of:
- a sample injector adapted to introduce the sample fluid into the mobile phase;
- a detector adapted to detect separated compounds of the sample fluid;
- a collection unit adapted to collect separated compounds of the sample fluid;
- a data processing unit adapted to process data received from the fluid separation system (10);
- a flow cell adapted for guiding at least a portion of the stimulus signal through the mobile phase.
A method for degassing a liquid (240), comprising:
- transporting the liquid (240) through a liquid conveyance member (210) disposed in an evacuated vacuum chamber (200), and
- directly venting the vacuum chamber (200) through a vent (270) comprised in the vacuum chamber (200).
A software program or product, preferably stored on a data carrier, for controlling or executing the method of the preceding claim, when run on a data processing system such as a computer.
Dependencies are inferred from the claim text.