Negative pressure control system

Details Negative pressure control system Negative pressure control system

1974-11-04

1976-08-24

Granger, Theodore A.

Liquid purification or separation

With gas separator

210321A, B01D 3100

Patent

active

039765741

ABSTRACT:
A dialysate flow control system is disclosed for an artificial kidney machine. The flow control system produces dialysate flow at negative pressure through the dialyzer and comprises a flow controller and first pump upstream of the dialyzer and a second pump downstream of the dialyzer. The negative pressure between the flow regulator and the first pump is utilized for deaeration and an air accumulator is disposed downstream of the first pump and provided with an air discharge path into the dialysate flow path downstream of the dialyzer. A negative pressure regulator automatically regulates the dialysate pressure in the dialyzer at a manually adjustable value and comprises regulator means responsive to the average value of negative pressure in the dialyzer to provide suction relief to the second pump as needed to maintain the selected pressure value.

REFERENCES:
patent: 3598727 (1971-08-01), Willock
patent: 3626670 (1971-12-01), Pecker
patent: 3640388 (1972-02-01), Ferrari
patent: 3756234 (1973-09-01), Kopp
patent: 3827561 (1974-08-01), Serfass et al.
patent: 3847809 (1974-11-01), Kopf

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