Patent US4453107A successfully refreshed from Google Patents.
Patent US5135725A successfully refreshed from Google Patents.
US5135725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ozone generator equipment and methods
Assignee: Ozonia International SA
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Filing: 1989-08-14
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Granted: 1992-08-04
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Expires: 2009-08-14
Abstract
Abstract A current source inverter power supply for an ozone generator which results in improved efficiency and reliability in operation of such generators has an AC/DC converter coupled through a large inductance to a DC/AC inverter that, in turn, is coupled at its output to the primary of a high voltage transformer. Such transformer has an air gap in its core to supply the electrical characteristics necessary for resonance with the load which is capacitive in nature. Thyristors in the inverter are naturally commutated so the switching frequency is close to, but slightly above, the natural resonant frequency of the inverter/transformer/ozone generator circuit.
Inventors
- 👤 Richard J. Hendrickson
- 👤 Kenneth G. Kafer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:39
CPC Classifications
C; C01; C01B; C01B13/00; C01B13/10; C01B13/11; C01B13/115; H; H02; H02M; H02M5/00; H02M5/40; H02M5/42; H02M5/44; H02M5/443; H02M5/45; H02M5/4505; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/505; H02M7/515; H02M7/523; H02M7/5233; H02M7/5236
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
68 words
A current source power supply circuit for an ozone generator comprising: an AC/DC rectifier coupled at its output through a filter choke to the input of a DC/AC inverter, the output of which supplies current to a resonant network and said resonant network comprises an air gap high voltage transformer having its primary coupled to said output of said inverter and its secondary coupled to said ozone generator.
Claim 2
Dependent Claim
68 words
A current source power supply circuit for an ozone generator comprising: an AC/DC rectifier coupled at its output through a filter choke to the input of a DC/AC inverter, the output of which supplies current to a resonant network and said resonant network comprises an air gap high voltage transformer having its primary coupled to said output of said inverter and its secondary coupled to said ozone generator.
Claim 3
Dependent Claim
27 words
A current source power supply circuit as claimed in claim 1 wherein said rectifier is a thyristor bridge rectifier and said inverter is a thyristor bridge inverter.
Claim 4
Dependent Claim
27 words
A current source power supply circuit as claimed in claim 1 wherein a variable capacitance couples said output of said inverter to said primary of said transformer.
Claim 5
Dependent Claim
26 words
A current source power supply circuit as claimed in claim 3 wherein said variable capacitance is automatically switched based on the state of said ozone generator.
Claim 6
Dependent Claim
39 words
A current source power supply circuit as claimed in claim 2 comprising protective control means that monitors each inverter thyristor turn off time and gates all thyristors on when said turn off time is less than a predetermined value.
Claim 7
Dependent Claim
18 words
A current source power supply circuit as claimed in claim 5 which restarts automatically after a fault shutdown.
Claim 8
Dependent Claim
24 words
A current source power supply circuit as claimed in claim 1 wherein said bridge rectifier regenerates stored energy back to said circuit upon shutdown.
Claim 9
Dependent Claim
33 words
A current source power supply circuit as claimed in claim 1 wherein at least one of said rectifier, said inverter, said high voltage transformer, said filter choke, or said variable capacitor is water-cooled.
References Cited (Backward Citations)
US3784838A
Cited
US4027169A
Cited
US4385261A
Cited
US4495043A
Cited
US4461744A
Cited
US4680694A
Cited
US4790980A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-04 | 1996-02-03 | 1996-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-04 | 2000-02-03 | 2000-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-04 | 2004-02-03 | 2004-08-04 | $7700.00 | Window Closed / Lapsed |