US 12,320,822 B2Granted

Evaporator for a thermogravimetric analyzer

AssigneeWaters Technologies Corporation

InventorsCornelia Will, Joseph D. Michienzi, Sornanathan Meyyappan, Jürgen Helmut Neumann

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Abstract

Described is a thermogravimetric analyzer system. The system includes an evaporator having first and second fluidic channels and a thermally controlled heater assembly. The first fluidic channel has a first channel inlet in fluidic communication with a gas supply module, a first channel outlet and an end portion extending from the first channel outlet. The second fluidic channel has a second channel inlet in fluidic communication with a source of liquid and a second channel outlet disposed on the first fluidic channel at a merge location between the first channel inlet and the first channel outlet. The end portion of the first fluidic channel includes a bend to redirect a flow within the first fluidic channel and improve a mixing of the gas and liquid received by the first and second fluidic channels, respectively.

Claims13

Dependent claims

A thermogravimetric analyzer system comprising:

a gas supply module;
a source of liquid;
an evaporator that evaporates the source of liquid, the evaporator comprising:
a first fluidic channel having a first channel inlet in fluidic communication with the gas supply module, a first channel outlet, and an end portion extending from the first channel outlet, wherein the end portion of the first fluidic channel includes a bend to redirect a flow of a mixture of the source of fluid and an output from the gas supply module within the first fluidic channel;
a thermally controlled heater assembly in thermal communication with the first fluidic channel;
and
a second fluidic channel having a second channel inlet in fluidic communication with the source of liquid and having a second channel outlet disposed on the first fluidic channel at a merge location between the first channel inlet and the first channel outlet, the bend downstream from the merge location, the thermally controlled heater assembly in thermal communication with the merge location;
a furnace having a furnace inlet in fluidic communication with the first channel outlet and a furnace outlet in fluidic communication with a back-pressure regulator that regulates the furnace;
and
a processor in communication with the gas supply module, the thermally controlled heater assembly and the back-pressure regulator, the processor configured to control a temperature, pressure and vapor concentration in the furnace.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/537,924Filed 30 Nov 2021 · us provisional application
Priority: 3 Dec 2020
Published: US 2022/0178803 A19 Jun 2022
Granted: 3 Jun 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

G01N 5/04
Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid: by removing a component, e.g. by evaporation, and…
G01G 23/48
Auxiliary devices for weighing apparatus: temperature-compensating arrangements
B01F 25/4332
Mixing tubes wherein the shape of the tube influences the mixing, e.g. mixing tubes with varying cross-section or provided with inwardly…
G01N
Investigating or analysing materials by determining their chemical or physical properties