IP Library Granted Patent US 12,157,686
Granted Patent B2
US 12,157,686 · App. 17/187,233 · Granted Dec 3, 2024

Systems and methods for sanitizing pool and spa water

Inventors: Raymond P. Denkewicz, Jr. (Bradenton, FL); Arthur W. Johnson, III (Stoughton, MA); James Murdock (Wakefield, RI); James Carter (Rehoboth, MA)
Assignee: Hayward Industries, Inc.
C02F1/4674B64C39/02C02F1/4672G01N33/0052G01N33/182B64U2101/00C02F1/325C02F2001/46119C02F1/78C02F2103/42Y02W10/37
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Quick Facts
Patent No.
US 12,157,686
App. No.
17/187,233
Granted
Dec 3, 2024
Kind
B2
Abstract

Systems and methods for sanitizing pool and spa water are provided. An electrolytic chlorinator is provided which includes a combined flow, temperature, and salt concentration sensor. The electrolytic chlorinator could include an acid tank for in-situ cleaning of the electrolytic chlorinator or acidification of pool/spa water where needed. A delayed polarity reversal technique is provided for de-scaling and managing passivation of the blades of an electrolytic chlorinator. The electrolytic chlorinator could include a sacrificial anode for protecting components of the chlorinator as well as other pool/spa components. The electrolytic chlorinator could include an integral, electrically-controlled acid generator, a brine tank for periodically superchlorinating and/or shocking pool/spa water, and/or a plurality of chemical tanks/feeds for periodically injecting chemicals into the chlorinator. A combined ultraviolet (UV)/Ozone and salt (electrolytic) chlorine generator is provided, as well as: filters having integral UV sanitizers; reflective linings for UV sanitization systems; means for injecting bubbles into pool/spa water; and a system for acquiring and analyzing samples of pool/spa water using an unmanned aircraft (drone).

Claims (11)

1. A sanitization system, comprising:

an electrolytic chlorinator having a plurality of electrolytic plates for generating free chlorine from salt through electrolysis; and

a replaceable sacrificial anode removably positioned in a chamber of the electrolytic chlorinator, the sacrificial anode mitigating against galvanic corrosion damage to a pool or spa component, wherein the replaceable sacrificial anode comprises a removable plug removably positionable within the chamber of the electrolytic chlorinator through an aperture formed in the electrolytic chlorinator.

2. The sanitization system of claim 1 , wherein the sacrificial anode is formed from zinc.

3. The sanitization system of claim 2 , wherein the zinc provides an algistat to water of a pool or a spa.

4. The sanitization system of claim 1 , wherein the sacrificial anode mitigates against corrosion caused by stray currents in water of the pool or spa.

5. The sanitization system of claim 4 , wherein the stray currents are caused by insufficient equipment bonding.

6. The sanitization system of claim 4 , wherein the stray currents are caused by insufficient grounding.

7. The sanitization system of claim 1 , wherein the sacrificial anode provides cathodic protection for a pool or a spa.

8. The sanitization system of claim 1 , wherein water flows past the sacrificial anode prior to flowing past electrolytic plates of the electrolytic chlorinator.

9. The sanitization system of claim 1 , wherein water flows past electrolytic plates of the electrolytic chlorinator prior to flowing past the sacrificial anode.

Assignments (6)
ABL PATENT SECURITY AGREEMENT SUPPLEMENT Recorded Mar 12, 2025
From: HAYWARD INDUSTRIES, INC.
To: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 070486/0425 →
FIRST LIEN PATENT SECURITY AGREEMENT SUPPLEMENT Recorded Mar 12, 2025
From: HAYWARD INDUSTRIES, INC.
To: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 070486/0605 →
ABL PATENT SECURITY AGREEMENT SUPPLEMENT Recorded Jun 10, 2021
From: HAYWARD INDUSTRIES, INC.
To: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
Reel/Frame 056540/0771 →
FIRST LIEN PATENT SECURITY AGREEMENT SUPPLEMENT Recorded Jun 1, 2021
From: HAYWARD INDUSTRIES, INC.
To: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
Reel/Frame 056447/0203 →
ASSIGNEE CHANGE OF ADDRESS Recorded Feb 26, 2021
From: HAYWARD INDUSTRIES, INC.
To: HAYWARD INDUSTRIES, INC.
Reel/Frame 055429/0098 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 26, 2021
From: DENKEWICZ, RAYMOND P., JR.; JOHNSON, ARTHUR W., III; MURDOCK, JAMES; CARTER, JAMES
To: HAYWARD INDUSTRIES, INC.
Reel/Frame 055432/0182 →
Continuity (3)
Continuation 15927412 · Mar 21, 2018
Provisional Application 62474333 · Mar 21, 2017
Related Publication 20210179454A1 · Jun 17, 2021