Patent US1725454A successfully refreshed from Google Patents.
US3715180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic programmer unit for burner control
Assignee: Honeywell Normalair Garrett Holdings Ltd
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Filing: 1971-02-08
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Granted: 1973-02-06
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Expires: 1991-02-08
Abstract
Abstract An electronic programme timer means of solid state construction, for a fuel burner, said programme timer means comprising a control switch for initiating operation, a plurality of sequencing relays, flame sensing means connected to voltage comparators, voltage ramp generator, voltage follower and level detectors with output connected to said comparators for controlling said sequencing relays, feedback means to said comparators to ensure correct switching, temperature sensing means for switching said timer means and pressure sensing means for checking operation of blower purging means.
Inventors
- 👤 E Cordell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:41
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/08; F23N5/082; F23N5/20; F23N5/203; F23N5/24; F23N5/242; G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/07; F23N5/18; F23N2005/181; F23N2005/182; F23N2223/00; F23N2223/20; F23N2223/22; F23N2223/28; F23N2225/00; F23N2225/02; F23N2225/08; F23N2227/00; F23N2227/04; F23N2227/12; F23N2227/22; F23N2227/24; F23N2227/28; F23N2227/30; F23N2227/36; F23N2229/00; F23N2231/00; F23N2231/20; F23N2233/00; F23N2233/06; F23N2239/00; F23N2239/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
351 words
An electronic programmer unit for a fuel burner for heating an enclosure, said programmer unit comprising: flame monitor means for monitoring flame detection within said fuel burner and having ''''flame detected'''' and ''''no flame detected'''' outputs, first transformer means for supplying electrical power to said flame monitor means, control circuit means including switching control means for controlling switching of alarm means, burner motor means, ignition means for igniting fuel in the burner, pilot valve means for supplying pilot fuel in the burner and fuel valve means for supplying the main fuel to the burner, voltage regulator means connected to said control circuit means, second transformer means, rectifier means connected to said second transformer means for supplying direct current voltage to said voltage regulator means, said control circuit means including voltage ramp generating means comprising voltage generator means, voltage follower means for producing a uniformly linear output voltage in accordance with the voltage gradient produced by said voltage generator means and voltage comparator means for producing an output when said ramp voltage reaches a predetermined value, operating relay means for controlling switching of said switch control means for said burner motor means, said ignition means, said pilot valve means and said fuel valve means, a first plurality of gating means for controlling operation of said relay means, first timing circuit means connected between the output of said voltage comparator means and said first plurality of gating means for controlling the time and sequence of operation of said operating relay means, lockout means for shutting down the burner, a second plurality of gating means for controlling actuation of said lockout means, feedback means for connecting said second plurality of gating means to temperature sensor means for sensing the temperature of the enclosure to be heated, air pressure sensing means for sensing burner motor operation during purging, said flame monitor means, said ignition means, said pilot valve means and said fuel valve means, second timing circuit means connected between the output of said voltage comparator and said second plurality of gating means, and lockout reset switching means for resetting the programmer unit after lockout.
Claim 2
Dependent Claim
351 words
An electronic programmer unit for a fuel burner for heating an enclosure, said programmer unit comprising: flame monitor means for monitoring flame detection within said fuel burner and having ''''flame detected'''' and ''''no flame detected'''' outputs, first transformer means for supplying electrical power to said flame monitor means, control circuit means including switching control means for controlling switching of alarm means, burner motor means, ignition means for igniting fuel in the burner, pilot valve means for supplying pilot fuel in the burner and fuel valve means for supplying the main fuel to the burner, voltage regulator means connected to said control circuit means, second transformer means, rectifier means connected to said second transformer means for supplying direct current voltage to said voltage regulator means, said control circuit means including voltage ramp generating means comprising voltage generator means, voltage follower means for producing a uniformly linear output voltage in accordance with the voltage gradient produced by said voltage generator means and voltage comparator means for producing an output when said ramp voltage reaches a predetermined value, operating relay means for controlling switching of said switch control means for said burner motor means, said ignition means, said pilot valve means and said fuel valve means, a first plurality of gating means for controlling operation of said relay means, first timing circuit means connected between the output of said voltage comparator means and said first plurality of gating means for controlling the time and sequence of operation of said operating relay means, lockout means for shutting down the burner, a second plurality of gating means for controlling actuation of said lockout means, feedback means for connecting said second plurality of gating means to temperature sensor means for sensing the temperature of the enclosure to be heated, air pressure sensing means for sensing burner motor operation during purging, said flame monitor means, said ignition means, said pilot valve means and said fuel valve means, second timing circuit means connected between the output of said voltage comparator and said second plurality of gating means, and lockout reset switching means for resetting the programmer unit after lockout.
Claim 3
Dependent Claim
351 words
An electronic programmer unit for a fuel burner for heating an enclosure, said programmer unit comprising: flame monitor means for monitoring flame detection within said fuel burner and having ''''flame detected'''' and ''''no flame detected'''' outputs, first transformer means for supplying electrical power to said flame monitor means, control circuit means including switching control means for controlling switching of alarm means, burner motor means, ignition means for igniting fuel in the burner, pilot valve means for supplying pilot fuel in the burner and fuel valve means for supplying the main fuel to the burner, voltage regulator means connected to said control circuit means, second transformer means, rectifier means connected to said second transformer means for supplying direct current voltage to said voltage regulator means, said control circuit means including voltage ramp generating means comprising voltage generator means, voltage follower means for producing a uniformly linear output voltage in accordance with the voltage gradient produced by said voltage generator means and voltage comparator means for producing an output when said ramp voltage reaches a predetermined value, operating relay means for controlling switching of said switch control means for said burner motor means, said ignition means, said pilot valve means and said fuel valve means, a first plurality of gating means for controlling operation of said relay means, first timing circuit means connected between the output of said voltage comparator means and said first plurality of gating means for controlling the time and sequence of operation of said operating relay means, lockout means for shutting down the burner, a second plurality of gating means for controlling actuation of said lockout means, feedback means for connecting said second plurality of gating means to temperature sensor means for sensing the temperature of the enclosure to be heated, air pressure sensing means for sensing burner motor operation during purging, said flame monitor means, said ignition means, said pilot valve means and said fuel valve means, second timing circuit means connected between the output of said voltage comparator and said second plurality of gating means, and lockout reset switching means for resetting the programmer unit after lockout.
Claim 4
Dependent Claim
351 words
An electronic programmer unit for a fuel burner for heating an enclosure, said programmer unit comprising: flame monitor means for monitoring flame detection within said fuel burner and having ''''flame detected'''' and ''''no flame detected'''' outputs, first transformer means for supplying electrical power to said flame monitor means, control circuit means including switching control means for controlling switching of alarm means, burner motor means, ignition means for igniting fuel in the burner, pilot valve means for supplying pilot fuel in the burner and fuel valve means for supplying the main fuel to the burner, voltage regulator means connected to said control circuit means, second transformer means, rectifier means connected to said second transformer means for supplying direct current voltage to said voltage regulator means, said control circuit means including voltage ramp generating means comprising voltage generator means, voltage follower means for producing a uniformly linear output voltage in accordance with the voltage gradient produced by said voltage generator means and voltage comparator means for producing an output when said ramp voltage reaches a predetermined value, operating relay means for controlling switching of said switch control means for said burner motor means, said ignition means, said pilot valve means and said fuel valve means, a first plurality of gating means for controlling operation of said relay means, first timing circuit means connected between the output of said voltage comparator means and said first plurality of gating means for controlling the time and sequence of operation of said operating relay means, lockout means for shutting down the burner, a second plurality of gating means for controlling actuation of said lockout means, feedback means for connecting said second plurality of gating means to temperature sensor means for sensing the temperature of the enclosure to be heated, air pressure sensing means for sensing burner motor operation during purging, said flame monitor means, said ignition means, said pilot valve means and said fuel valve means, second timing circuit means connected between the output of said voltage comparator and said second plurality of gating means, and lockout reset switching means for resetting the programmer unit after lockout.
Claim 5
Dependent Claim
21 words
A programmer unit as claimed in claim 1, wherein said signal feedback means include a combination of neon lamp and photo-resistor.
Claim 6
Dependent Claim
34 words
A programmer unit as claimed in claim 1, wherein said voltage ramp generating means includes a capacitor charging circuit, including a capacitor, a constant current source, and associated resistive network, for charging said capacitor.
Claim 7
Dependent Claim
23 words
A programmer unit as claimed in claim 1, wherein said voltage comparator means comprises a pair of integrated circuit inverters with resistive feedback.
Claim 8
Dependent Claim
18 words
A programmer unit as claimed in claim 1, wherein said gating means comprise integrated circuit digital logic gates.
Claim 9
Dependent Claim
23 words
A programmer unit as claimed in claim 1, wherein said timing circuit means each comprise a capacitive-resistive diode network and a transistor amplifier.
Claim 10
Dependent Claim
130 words
An electronic programmer unit as claimed in claim 1, wherein said lockout means comprises a retentive memory electrically operated bistable means having set and reset operating coils, lockout indication means, inverter means, lockout signal means for producing a lockout signal, a lockout requirement operating changeover means for energizing said set operating coil to supply a ground return means for said lockout indication means and to remove a ground return means from said lockout signal means for changing a no lockout signal to a lockout signal through said inverter means and reset switch means for energizing said reset operating coil to remove said ground return means from said lockout indicating means and for operating said changeover means to convert said lockout signal to a no lockout signal through said inverter means.
Claim 11
Dependent Claim
36 words
An electronic programmer unit as claimed in claim 1, wherein said switching control means comprise bi-directional thyristors, the gate of said bi-directional thyristors being energized through contacts of relay means energized by outputs of said programmer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |