Device to automatically add a controlled amount of corrosion inhibitor with a change in spring loading
First Claim
1. A device for the automatic addition of a chemical corrosion inhibiting additive to a solution requiring treatment, comprising a tank or reservoir for a solution circulating through a fluid system, a container positioned in a wall of the tank with an open end opening into the tank wall, a package movably mounted in the container and containing solid chemical corrosion inhibiting additive, said package being in sliding sealing contact with said container, an abutment in said tank above the open container end, a first spring within said container engaging the lower end of said additive package, a second spring located between and engaging the upper end of said package and said abutment within said solution, said second spring being constructed of a material which is corridible by a corrosive solution, such that said package remains out of contact with the solution until the inhibitor level is insufficient to protect said second spring against corrosion, at which time the second spring decreases in force due to corrosion thereof so that the force of the first spring overcomes the second spring to raise the package and additive into contact with said solution for dissolution thereof.
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Accused Products
Abstract
A system for the addition of a corrosion inhibitor to an engine cooling system wherein a container in the coolant system holds the corrosion inhibitor in a solid package which is withheld from contact with the coolant solution by a spring under load. The inhibitor package is counterbalanced by a pair of opposed springs with one spring being subject to corrosion when the corrosive effect of the coolant increases; corrosion of the spring allowing the inhibitor package to be urged into contact with the solution to provide treatment thereof.
76 Citations
15 Claims
- 1. A device for the automatic addition of a chemical corrosion inhibiting additive to a solution requiring treatment, comprising a tank or reservoir for a solution circulating through a fluid system, a container positioned in a wall of the tank with an open end opening into the tank wall, a package movably mounted in the container and containing solid chemical corrosion inhibiting additive, said package being in sliding sealing contact with said container, an abutment in said tank above the open container end, a first spring within said container engaging the lower end of said additive package, a second spring located between and engaging the upper end of said package and said abutment within said solution, said second spring being constructed of a material which is corridible by a corrosive solution, such that said package remains out of contact with the solution until the inhibitor level is insufficient to protect said second spring against corrosion, at which time the second spring decreases in force due to corrosion thereof so that the force of the first spring overcomes the second spring to raise the package and additive into contact with said solution for dissolution thereof.
- 14. A device for the automatic addition of a chemical corrosion inhibiting additive to a solution requiring treatment, comprising a tank or reservoir for a solution circulating through a fluid system, a container positioned in a wall of the tank with an open end opening into the tank wall, a package movably mounted in the container and containing solid chemical corrosion inhibiting additive, said package being in sliding sealing contact with said container, an elongated lever pivoted at an adjacent tank wall in said tank above the open container end, a thin wire extending between and secured to the free end of the lever and to said first mentioned tank wall, a first spring within said container engaging the lower end of said additive package, a second spring in said solution located between and engaging the upper end of said package and said lever, said wire being formed of a material which is corrodible by a corrosion solution, such that said package remains out of contact with the solution until the inhibitor level in the solution decreases below a predetermined level and the wire will corrode and break releasing said lever so that said first spring can raise the inhibitor package and additive into contact with said solution for dissolution thereof.
Specification