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US 2003/0116592 A1Published application
Chemical feeder
AssigneeArch Chemicals, Inc.
InventorsDavid W. Blanchette, Christopher M. Zetena, Michael Paloian, Anthony R. Orchard
Life of this patent
Estimating the term…
Abstract
A feeder that uses a local elevation or stationary wave of a body of water to facilitate the dissolving of a chlorine-containing water treatment chemical.
Claims34
A feeder device for introducing a chemical into a flow of water comprising:
- a feeder inlet and a feeder outlet;
- a reservoir of the chemical in solid form and having a foraminate lower portion;
- a first conduit having an outlet and in communication with the feeder inlet in at least a first feeder condition;
- a wall surrounding the conduit outlet and extending upward thereof and, in at least said first feeder condition, maintaining a body of water in which said conduit outlet is immersed;
- an outlet chamber which in at least said first feeder condition receives overflow containing the dissolved chemical from the body and is in communication with the feeder outlet.
2 more elements
A feeder device for introducing a chemical into a flow of water comprising:
- a feeder inlet and a feeder outlet;
- a reservoir of the chemical in solid form and having a foraminate lower portion;
- a first conduit having an outlet and in communication with the feeder inlet in at least a first feeder condition;
- means for maintaining a body of water in which said conduit outlet is immersed in at least said first feeder condition;
- means for altering flow through the conduit to locally elevate a surface of said body between:
- a first level in said first feeder condition in which the body contacts the chemical in the reservoir so as to dissolve such chemical;
- a second level in a second feeder condition in which the body does not contact the chemical in the reservoir;
- and
- means for, in at least said first feeder condition, directing flow containing the dissolved chemical from the body to the feeder outlet.
6 more elements
A device for introducing chlorine from a chlorine-containing pool treatment chemical into a flow of water to/from a swimming pool comprising:
- a feeder inlet receiving water from the flow;
- a reservoir of the chemical in solid form and having a foraminate lower portion;
- a first conduit having an outlet and in communication with the feeder inlet in at least a first feeder condition;
- a wall surrounding the conduit outlet and extending upward thereof and, in at least said first feeder condition, maintains a body of water in which said conduit outlet is immersed, the first conduit in said first feeder condition discharging water through the conduit outlet at a rate and speed effective to locally elevate a first surface portion of the body by a height of between 0.125 inch and 1.0 inch above another surface portion of the body so that the first surface portion contacts the chemical to dissolve the chemical;
- an outlet chamber which in at least said first feeder condition receives said dissolved chemical;
- and
- a feeder outlet returning said dissolved chemical to the flow.
4 more elements
A method for introducing a treatment chemical into a body of water at a controlled rate comprising the acts of:
- providing a feeder having an inlet, an outlet, and containing a solid chemical in a chemical reservoir;
- causing a flow of water from the body to enter the feeder through the inlet and exit through the outlet to return to the body so as to run the feeder in at least a steady state first condition wherein:
- at least a first portion of the flow is directed through a conduit outlet into a first body of water so as to produce at least one local elevation of a portion of a surface of that first body, the local elevation contacting a foraminate lower portion of a reservoir of said treatment chemical in solid form so as to dissolve said treatment chemical;
- and
- said dissolved treatment chemical is directed to said outlet;
- and
- restricting at least said first flow portion so as to disengage the first body of water from the reservoir and cause the feeder to enter at least a steady state second condition.
4 more elements
A chemical container in a condition installed on a receptacle of a chemical feeder and, comprising:
- said chemical, comprising in major part calcium hypochlorite;
- a molded plastic body containing the chemical and having:
- an open lower end;
- a closed upper end;
- and
- an externally-threaded portion proximate the lower end in threaded engagement to a complementary internally-threaded portion of the receptacle;
- and
- a foraminate cover extending across the container mouth and at least partially supporting the chemical and having a central portion immersed in a locally elevated central portion of a body of water.
5 more elements
Dependencies are inferred from the claim text.