Flow damper for a cleaning station

Details Flow damper for a cleaning station Flow damper for a cleaning station

1997-04-25

1999-04-27

Coe, Philip R.

Cleaning and liquid contact with solids

Apparatus

With non-impelling fluid deflector or baffle other than...

7386422, B08B 304

Patent

active

058968792

ABSTRACT:
A flow damper for cleaning stations, in particular for cleaning pipettor tips, is described, a cleaning liquid being introduced into the cleaning station through a pipettor needle and flowing around the pipettor tip before it is conducted away out of the cleaning station. In order to avoid wetting of the isolation surfaces of the pipettor needle and a level detector electrode, if provided, there are provided, according to the invention, in the cleaning station at least one screen having a preferably central entry orifice for the jet of liquid emerging from the pipettor needle and a device for diverting the liquid flow in the direction essentially opposite that of the entering jet of liquid. Furthermore, a plurality of exit orifices, preferably arranged radially around the entry orifice, for the diverted liquid flow are formed in the at least one screen.

REFERENCES:
patent: 3912535 (1975-10-01), Rauser
patent: 4076503 (1978-02-01), Atwood et al.
patent: 4730631 (1988-03-01), Schwartz
patent: 5133373 (1992-07-01), Hoffman et al.
patent: 5186194 (1993-02-01), Kitajima

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