Heatable diaphragm pump for gases
AssigneeBodenseewek Geratetechnik GmbH
InventorsTilman Spaeth, Eberhard Lembcke
Life of this patent
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Abstract
Deposits and corrosion are to be avoided in a heatable diaphragm pump for smoke gases which are to be analyzed. A heatable pump head comprises a diaphragm chamber which is closed by a diaphragm. The diaphragm is driven by a motor through a connecting rod. The connecting rod is heated by controlled heating means and a temperature sensor. Transmission of measuring signals from the temperature sensor to a controller and the power supply to the heating means is permitted through U-shaped leaf springs.
Claims13
A heatable diaphragm pump for gases, for example for the pumping of smoke gases which are to be analysed for noxious components, comprising
- (a) a pump head (10) with a diaphragm chamber (12) which is closed by a flexible diaphragm (14) and which communicates with a gas inlet (36) through a check valve (34) opening in inlet direction, and communicates with a gas outlet (40) through a check valve (38) opening in outlet direction,
- (b) a driving motor (32)
- (c) a connecting rod (46) which is fixedly connected to the diaphragm (14) through clamping plates (42,44) and which is arranged to be driven for reciprocatory motion by the driving motor (32) through a crank drive (50),
- (d) insulation means (26,28) for thermic insulation of the pump head (10), and
- (e) pump head heating means (24) for heating the pump head (10)
- characterized in that
- (f) heating means (52) are provided in the connecting rod (46) in addition to the pump head heating means (24).
Dependencies are inferred from the claim text.