Deaerating liquid
First Claim
1. Apparatus for deaerating liquid supplied to a dialyzer comprisingfirst flow restriction means in a source supply line connected to a source of liquid to limit the flow rate through said line,first deaeration chamber means having a liquid outlet, a liquid inlet connected to said source supply line downstream of said first flow restriction means, and an air outlet located above said liquid inlet and said liquid outlet,a first positive displacement pump having an inlet connected to said liquid outlet of said deaeration chamber means, so that said deaeration chamber means is between said pump and said first flow restriction means, and an outlet connected to a dialyzer supply line and capable of pumping at a flow rate higher than the flow rate permitted by said first flow restriction means to lower the pressure of the liquid between said first pump and said first flow restriction means and cause volatilization of gases dissolved therein,low pressure sink means connected to said air outlet, andsecond flow restriction means connected between said liquid outlet of said deaeration chamber means and said first pump to raise the pressure at said liquid outlet to a level greater than that at said air outlet to cause volatilized gas collected within said chamber to flow through said air outlet and not through said liquid outlet.
2 Assignments
0 Petitions
Accused Products
Abstract
Liquid deaeration apparatus having a deaeration chamber, a positive displacement pump downstream of the deaeration chamber, a first flow restrictor upstream of the deaeration chamber, a low pressure sink connected to an air outlet of the deaeration chamber, and a second flow restrictor between the pump and the liquid outlet of the deaeration chamber to raise the pressure at the liquid outlet above that at the air outlet to cause volatilized gas to be removed via the air outlet of the deaeration chamber.
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Citations
9 Claims
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1. Apparatus for deaerating liquid supplied to a dialyzer comprising
first flow restriction means in a source supply line connected to a source of liquid to limit the flow rate through said line, first deaeration chamber means having a liquid outlet, a liquid inlet connected to said source supply line downstream of said first flow restriction means, and an air outlet located above said liquid inlet and said liquid outlet, a first positive displacement pump having an inlet connected to said liquid outlet of said deaeration chamber means, so that said deaeration chamber means is between said pump and said first flow restriction means, and an outlet connected to a dialyzer supply line and capable of pumping at a flow rate higher than the flow rate permitted by said first flow restriction means to lower the pressure of the liquid between said first pump and said first flow restriction means and cause volatilization of gases dissolved therein, low pressure sink means connected to said air outlet, and second flow restriction means connected between said liquid outlet of said deaeration chamber means and said first pump to raise the pressure at said liquid outlet to a level greater than that at said air outlet to cause volatilized gas collected within said chamber to flow through said air outlet and not through said liquid outlet.
Specification