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US3864543A
Expired / Lapsed
US
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Continuously modulated electrode boiler
Assignee: MOHR BAKER CO
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Filing: 1973-05-29
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Granted: 1975-02-04
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Expires: 1993-05-29
Abstract
Abstract An electrode boiler apparatus for converting electrical energy to heat energy includes an electrically conductive container or pressure vessel containing an electrically conductive liquid in which is immersed at least one pair of electrodes. A variable reactance is mounted upon the container and connected to a power source to induce current into the container walls. The electrodes are mounted for movement relative to each other to vary the effective current path between the electrodes and the electrodes are connected in series with the variable reactance. Adjustment of the spacing between the electrodes provides continuous power control from full load down to 5-15 percent of the full load rating, at which point the inductive reactance of the variable reactance increases to reduce the power drawn to a no load condition. The variable reactance may comprise a saturable laminated C-shaped core mounted on the container wall and provided with a coil wound about the core and connected in series with the electrodes. Alternatively, the variable reactance may comprise a saturable reactor.
Inventors
- 👤 Glenn R Mohr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:09
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/10; F24H1/101; F24H1/106
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
76 words
An electrode boiler comprising: A. An electrically conductive containEr means; B. A pair of relatively movable electrodes within said container means for creating a current path through a fluid within said container means; C. A variable reactance adapted to be connected to a power source and in series with the movable electrodes, said reactance being mounted upon said container and including an inductance means for passing flux through the container means to induce a current therein.
Claim 2
Dependent Claim
76 words
An electrode boiler comprising: A. An electrically conductive containEr means; B. A pair of relatively movable electrodes within said container means for creating a current path through a fluid within said container means; C. A variable reactance adapted to be connected to a power source and in series with the movable electrodes, said reactance being mounted upon said container and including an inductance means for passing flux through the container means to induce a current therein.
Claim 3
Dependent Claim
17 words
A device as recited in claim 1 in which: A. Said variable reactance comprises a saturable reactor.
Claim 4
Dependent Claim
41 words
A device as recited in claim 1 in which: A. Said variable reactance comprises a wall of the container means and a C-shaped core mounted thereon and carrying a winding adapted to be connected to the power source and the electrodes.
Claim 5
Dependent Claim
68 words
A boiler comprising: A. An electrically conductive container structure; B. Variable resistance means within said container for converting electrical energy to heat energy and for modulating the power drawn; C. A variable reactance means mounted upon said container structure in series with said resistance means and adapted to be connected to a power source for further modulating the power drawn and for inducing current in said container structure.
Claim 6
Dependent Claim
68 words
A boiler comprising: A. An electrically conductive container structure; B. Variable resistance means within said container for converting electrical energy to heat energy and for modulating the power drawn; C. A variable reactance means mounted upon said container structure in series with said resistance means and adapted to be connected to a power source for further modulating the power drawn and for inducing current in said container structure.
Claim 7
Dependent Claim
59 words
An apparatus as recited in claim 4 in which: A. The variable resistance means modulates the power from the rated load of the boiler down to about 10 percent of the rated load; and B. The reactance means and resistance means modulates the power drawn from about 10 percent of the rated load down to the no load condition.
Claim 8
Dependent Claim
46 words
An apparatus as recited in claim 4 in which: A. Said resistance means comprises three pairs of electrode units wye connected; B. Said reactance means comprises three variable reactors adapted to be connected to a three phase power source and in series with said electrode units.
Claim 9
Dependent Claim
88 words
An electrode boiler comprising: A. An electrically conductive container structure having a fluid inlet and outlet; B. A variable reactance adapted to be connected to a source of electrical energy and mounted upon said container structure and for inducing current therein; C. A variable resistance within said container, connected in series to said variable reactance and to a return conduit for varying the reactance for varying the energy drawn and converted to heat; D. Means for varying the reactance for varying the energy drawn and converted to heat.
Claim 10
Dependent Claim
88 words
An electrode boiler comprising: A. An electrically conductive container structure having a fluid inlet and outlet; B. A variable reactance adapted to be connected to a source of electrical energy and mounted upon said container structure and for inducing current therein; C. A variable resistance within said container, connected in series to said variable reactance and to a return conduit for varying the reactance for varying the energy drawn and converted to heat; D. Means for varying the reactance for varying the energy drawn and converted to heat.
Claim 11
Dependent Claim
28 words
A device as recited in claim 7 in which: A. Said resistance comprises at least one pair of relatively movable electrodes for varying the effective current path therebetween.
Claim 12
Dependent Claim
22 words
A device as recited in claim 8 in which: A. Said variable reactance comprises a core and winding mounted upon the container.
Claim 13
Dependent Claim
26 words
A device as recited in claim 9 in which: A. Said core comprises a section of the container wall and a C shaped lamination mounted thereon.
Claim 14
Dependent Claim
16 words
A device recited in claim 7 in which: A. Said variable reactance comprises a saturable reactor.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |