Calorimeter
AssigneeLeco Corporation
InventorsKevin R. Brushwyler, John T. Hoss, Octavio R. Latino
Life of this patent
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Abstract
A calorimeter includes a bucket cover which is used to reconfigure an isothermal water reservoir to provide for temperature equilibration prior to sample analysis and subsequently define a fixed volume of water during analysis in which high precision temperature measurements can be recorded. The apparatus includes mechanisms for sealing and controlling the cover, and for coupling the combustion vessel to the cover while minimizing the thermal contact between them. Improved thermal isolation between the fixed volume of water and the surrounding environment is also achieved.
Claims18
A calorimeter comprising:
- a combustion vessel;
- a thermally insulated bucket having an internal volume for receiving said combustion vessel, wherein said bucket can be filled with a fluid at a predetermined temperature;
- and
- a movable cover selectively coupled to said combustion vessel and including an inflatable seal selectively coupled to a source of pressurized fluid for sealably engaging said bucket for sealing said bucket during an analysis including the combustion of a sample within said combustion vessel.
A calorimeter comprising:
- a combustion vessel;
- a thermally insulated bucket having an internal volume for receiving said combustion vessel, wherein said bucket can be filled with a fluid at a predetermined temperature;
- and
- a movable cover selectively coupled to said combustion vessel wherein said cover includes one of a socket and post and said combustion vessel includes the other of a post and socket wherein said combustion vessel can be removably mounted to said cover by inserting said post into said socket.
A calorimeter comprising:
- a combustion vessel;
- a thermally insulated bucket having an internal volume for receiving said combustion vessel, wherein said bucket can be filled with a fluid at a predetermined temperature, said bucket including a baffle into which said combustion vessel is positioned during an analysis;
- an impeller rotatably positioned at a lower end of said baffle for circulating fluid around said combustion vessel during an analysis, said impeller coupled to permanent magnets positioned within said bucket;
- a magnetic stirrer including permanent magnets positioned within said jacket external to said bucket for actuating said impeller through the magnetic coupling between the respective permanent magnets;
- a movable cover selectively coupled to said combustion vessel and including an inflatable seal selectively coupled to a source of pressurized fluid for sealably engaging said bucket for sealing said bucket during an analysis including the combustion of a sample within said combustion vessel;
- and
- wherein said cover includes one of a socket and post and said combustion vessel includes the other of a post and socket wherein said combustion vessel can be removably mounted to said cover by inserting said post into said socket.
Dependencies are inferred from the claim text.