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US 6,039,927 AGranted
Valve system for regenerative thermal oxidizers
OwnerRichard Grecoinventor
Life of this patent
Estimating the term…
Abstract
A two chamber regenerative thermal oxidizer has a pair of poppet valves actuated by an eccentric mechanical drive assembly having a single drive shaft. Gas flow through the RTO is reversed by the simultaneous opening and closing of the poppet valves. Deceleration of the valve discs is controlled using a variable speed motor to reduce valve damage. In another configuration, the mechanical eccentric drive controls two sets of butterfly valves in an RTO.
Claims19
A regenerative thermal oxidizer, comprising:
- a first heat exchanger defining a first flow path;
- a first inlet/outlet in association with said first heat exchanger, said first inlet/outlet providing flow access to said first flow path;
- a second heat exchanger defining a second flow path;
- a second inlet/outlet in association with said second heat exchanger, said second inlet/outlet providing flow access to said second flow path;
- a valve assembly having at least two poppet discs, said valve assembly defining multiple flow passages therethrough;
- said valve assembly being in flow communication with said first and second inlet/outlets;
- each of said poppet discs being mounted on a separate rod;
- an eccentric mechanical drive, said eccentric mechanical drive having a drive shaft and a drive disc at each end of said drive shaft;
- linkage attached to said drive shaft at said drive discs;
- and
- said rods being attached to said linkage.
8 more elements
A regenerative thermal oxidizer, comprising:
- a first heat exchanger defining a first flow path;
- a first inlet/outlet in association with said first heat exchanger, said first inlet/outlet providing flow access to said first flow path;
- a second heat exchanger defining a second flow path;
- a second inlet/outlet in association with said second heat exchanger, said second inlet/outlet providing flow access to said second flow path;
- wherein said first and second heat exchangers are attached to a common combustion chamber positioned between said first flow path and said second flow path;
- a valve assembly having at least two poppet discs, said valve assembly defining multiple flow passages therethrough;
- said valve assembly being in flow communication with said first and second inlet/outlets;
- each of said poppet discs being mounted on a separate rod;
- an eccentric mechanical drive, wherein said eccentric mechanical drive includes a variable speed motor and a reducing gear assembly for moving said poppet discs at predetermined rates of acceleration and deceleration;
- said eccentric mechanical drive having a drive shaft and a drive disc at each end of said drive shaft;
- wherein said reducing gear assembly allows rotation of the drive shaft in a single direction;
- linkage attached to said drive shaft at said drive discs;
- wherein said linkage includes an over-drive bearing spring assembly and a connecting rod;
- and
- said rods being attached to said linkage.
12 more elements
A regenerative thermal oxidizer, comprising:
- two heat exchange chambers;
- a common combustion chamber in flow communication with said heat exchangers;
- an inlet/outlet valve system for directing gases through said heat exchangers and said combustion chamber;
- said inlet/outlet valve system having four butterfly valves;
- an eccentric mechanical drive, said eccentric mechanical drive having a drive shaft;
- a first drive disc at one end of said drive shaft;
- a second drive disc at the other end of said drive shaft;
- first linkage attached to said first drive disc;
- second linkage attached to said second drive disc;
- said first linkage being attached to two of said butterfly valves;
- and
- said second linkage being attached to said other two of said of said butterfly valves.
9 more elements
Dependencies are inferred from the claim text.