Directional flow control
First Claim
Patent Images
1. A flow control device comprisinga first channel for the flow of fluid;
- a branch channel connected to said first channel and angularly disposed with respect thereto to serve as a conduit for at least a portion of the flow from said first channel; and
means at the convergence of the branch and first channels for controlling the flow from said first channel into said branch channel, comprising a diaphragm which is nominally positioned on a ring seat and bowed under pressure into said first channel, said diaphragm making tangential contact with said ring seat that slopes away from both sides of said contact;
said branch channel having opposite ends, of which one end is connected to said first channel and the other end is connected to a second channel, with the length of said branch channel exceeding the maximum diameter of the first and second channels;
said branch channel being formed by a plurality of distinctive subordinate and enclosed channels in order to permit a substantial flow of fluid into said second channel while limiting the extent to which said diaphragm can be drawn into said branch channel under conditions of substantial fluid flow.
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Abstract
A flow control device in which a plurality of flow channels converge in a two-part housing containing a free-floating and pre-biased flow control diaphragm and an injection site. The free-floating diaphragm is at the entry position of an intermediate channel which extends to an output channel of the injection site. The control diaphragm is pre-biased by a prong which extends from a base portion of the two-part housing.
37 Citations
14 Claims
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1. A flow control device comprising
a first channel for the flow of fluid; -
a branch channel connected to said first channel and angularly disposed with respect thereto to serve as a conduit for at least a portion of the flow from said first channel; and means at the convergence of the branch and first channels for controlling the flow from said first channel into said branch channel, comprising a diaphragm which is nominally positioned on a ring seat and bowed under pressure into said first channel, said diaphragm making tangential contact with said ring seat that slopes away from both sides of said contact; said branch channel having opposite ends, of which one end is connected to said first channel and the other end is connected to a second channel, with the length of said branch channel exceeding the maximum diameter of the first and second channels; said branch channel being formed by a plurality of distinctive subordinate and enclosed channels in order to permit a substantial flow of fluid into said second channel while limiting the extent to which said diaphragm can be drawn into said branch channel under conditions of substantial fluid flow. - View Dependent Claims (2)
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3. A flow control device which comprises
(a) a first channel for the control of fluid; -
(b) a ring seat within said first channel; (c) a control diaphragm in tangential contact with said ring seat; wherein said ring seat slopes away from said control diaphragm on both sides of the tangential contact therewith and radially extending buttresses are positioned opposite said ring seat with said diaphragm therebetween, with said radially extending buttresses circumferentially disposed about said first channel and extending on both sides of the tangential contact of said diaphragm with said ring seat. - View Dependent Claims (4, 5, 6, 7)
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8. A flow control device which comprises
(a) a first channel for the control of fluid; -
(b) a ring seat within said first channel; (c) a control diaphragm in tangential contact with said ring seat; wherein said ring seat slopes away from said control diaphragm on both sides of the tangential contact therewith, further including a branch channel having a plurality of conduits therein extending at an angle with said ring seat at the tangency thereof with said diaphragm, a second channel joined to said first channel by said branch channel, an injection site stopper joined to said second channel with its lower surface in alignment with said branch channel, said device being in two parts with each part containing a portion of each conduit and joined together with said conduits of the two parts in registration. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification