PIEZO-DESORBER FOR GAS ANALYSIS DEVICES Russian patent published in 2017 - IPC G01N30/24 

FIELD: instrument making.

SUBSTANCE: piezo-desorber for gas analysis devices comprises a chamber with a lid, positioned inside the chamber piezoceramic plate soldered to the rack which is moulded in the dielectric holder, is fixed in it by dielectric stub and through which the electrical contact is made to the lower side of the piezoceramic plate, a flexible conductor, making a contact to the upper side of the plate. Piezo-desorber also includes a housing, which has the generator board inside, exciting oscillations of the piezoceramic plate, closing with the lid, piezo-desorber locking knot on the input of the gas analyzer, consisting of a flange, a union nut and sealing bushing, a dielectric contact rack with two contact units located on the body. At the same time the sorbent placed on the piezoceramic plate, simultaneously affected by the two factors - ultrasound and heating conditioned upon the heat release due to its mechanical and electrical losses.

EFFECT: increased desorption rate of the target substance from the sorbent.

1 dwg