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US 11,387,089 B2Granted
Direct sample introduction device and method for cooling sample introduction probe
AssigneeShimadzu Corporation
InventorYoshiro Hiramatsu
Life of this patent
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Abstract
A direct sample introduction device includes: a pre-evacuating chamber that has an internal space extending in a first direction through which a sample introduction probe extends in the first direction; a first ventilation unit that is allowed to be opened and closed, with a first end thereof being connected to the pre-evacuating chamber; and a second ventilation unit a first end of which is connected to the pre-evacuating chamber and a second end of which is connected to a low pressure source.
Claims13
A direct sample introduction device, comprising:
- a pre-evacuating chamber that has an internal space extending in a first direction through which a sample introduction probe extends in the first direction;
- a first ventilation unit that is allowed to be opened and closed, with a first end thereof being connected to the pre-evacuating chamber;
- and
- a second ventilation unit a first end of which is connected to the pre-evacuating chamber and a second end of which is connected to a low pressure source,
- wherein the pre-evacuating chamber is connected to an ionization chamber configured to receive an end of the sample introduction probe in the first direction through an openable and closable gate valve,
- the direct sample introduction device further comprising:
- a control unit configured to control the first ventilation unit, the second ventilation unit and the gate valve,
- wherein the control unit makes the first and second ventilation unit in an open state and the gate valve in a close state to send gas from the first ventilation unit to the low pressure source through the pre-evacuation chamber and the second ventilation unit.
5 more elements
A method for cooling a sample introduction probe, comprising:
- providing a pre-evacuation chamber connected to an ionization chamber configured to receive an end of a sample introduction probe in a first direction through an openable and closable gate valve;
- arranging the sample introduction probe in the pre-evacuating chamber having an internal space extending in the first direction;
- supplying gas to an inside of the pre-evacuating chamber through a first ventilation unit a first end of which is connected to the pre-evacuating chamber;
- evacuating gas of the inside of the pre-evacuating chamber through a second ventilation unit a first end of which is connected to the pre-evacuating chamber, and
- controlling the first ventilation unit, the second ventilation unit and the gate valve by controlling the first and second ventilation unit in an open state and the gate valve in a close state to send gas from the first ventilation unit to the low pressure source through the pre-evacuation chamber and the second ventilation unit.
2 more elements
Dependencies are inferred from the claim text.