US 12,502,623 B2Granted

Evaporation concentration mechanism and method for controlling same

AssigneeHitachi High-Tech Corporation

InventorsMayuko Ito, Shinya Matsuoka

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Abstract

An evaporation concentration mechanism is realized that can control a depressurization rate by an inexpensive and simple mechanism to inhibit bumping at the time of evaporation and concentration. The evaporation concentration mechanism includes a reaction vessel that holds a sample solution, a depressurization channel connected to the reaction vessel, and a depressurization source that is connected to the reaction vessel via the depressurization channel and depressurizes the inside of the reaction vessel. The evaporation concentration mechanism further includes at least one of solenoid valves provided in the depressurization channel, and a control unit 8 that controls an operation of the solenoid valves. The control unit 8 intermittently opens and closes the solenoid valves during a depressurization period in which the inside of the reaction vessel is depressurized by the depressurization source.

Claims9

Dependent claims

An evaporation concentration mechanism, comprising:

a reaction vessel holding a sample solution;
a depressurization channel connected to the reaction vessel;
and
a depressurization source connected to the reaction vessel via the depressurization channel and configured to depressurize the inside of the reaction vessel,
the evaporation concentration mechanism further comprising:
a depressurizing solenoid valve having one side connected to a channel of the depressurization channel in a side of the reaction vessel, and the other side connected to a channel of the depressurization channel in a side of the depressurization source;
and
a pressure-releasing solenoid valve having one side connected to the depressurization channel between the reaction vessel and the depressurizing solenoid valve, and the other side opened to the atmosphere;
and
a control unit for preliminarily setting one or more open-close patterns of the pressurizing solenoid valve and the pressure-releasing solenoid valve during a depressurization period for depressurizing the inside of the reaction vessel by the depressurization source, the control unit controlling each opening and closing of the depressurizing solenoid valve and the pressure-releasing solenoid valve in accordance with a set pattern,
wherein the open-close pattern is used for intermittently opening and closing the depressurizing solenoid valve, and for holding the pressure-releasing solenoid valve in an open state during the depressurization period, and
wherein the open-close pattern is used for holding the depressurizing solenoid valve in an open state, and intermittently opening and closing the pressure-releasing solenoid valve during the depressurization period.

9 more elements

A method for controlling an evaporation concentration mechanism that includes a reaction vessel holding a sample solution, a depressurization channel connected to the reaction vessel, a depressurization source connected to the reaction vessel via the depressurization channel and configured to depressurize the inside of the reaction vessel, the evaporation concentration mechanism further comprising a depressurizing solenoid valve having one side connected to a channel of the depressurization channel in a side of the reaction vessel, and the other side connected to a channel of the depressurization channel in a side of the depressurization source, and

a pressure-releasing solenoid valve having one side connected to the depressurization channel between the reaction vessel and the depressurizing solenoid valve, and the other side opened to the atmosphere, wherein a set pattern is selected from one or more open-close patterns of the depressurizing solenoid valve and the pressure-releasing solenoid valve during a depressurization period for depressurizing the inside of the reaction vessel by the depressurization source are preliminarily set to control each opening and closing of the depressurizing solenoid valve and the pressure-releasing solenoid valve in accordance with the set pattern, accordance with a set pattern,
wherein the open-close pattern is used for intermittently opening and closing the depressurizing solenoid valve, and for holding the pressure-releasing solenoid valve in an open state during the depressurization period, and
wherein the open-close pattern is used for holding the depressurizing solenoid valve in an open state, and intermittently opening and closing the pressure-releasing solenoid valve during the depressurization period.

Dependencies are inferred from the claim text.