US3861855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic combustion control
Assignee: B S C IND CORP
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Filing: 1973-12-19
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Granted: 1975-01-21
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Expires: 1993-12-19
Abstract
Abstract The control of efficiency of combustion is effected by the use of a smoke detector and mechanical amplifier, and by solid state devices for the detection and amplification of electrical signals produced thereby, with the ultimate purpose of positioning a modulating-type electric motor which in turn adjusts a fuel oil valve and primary and secondary air valves or dampers by means of mechanical linkages. Either a single motor or three separate modulating-type electric motors can be used for the three combustion control functions, i.e., fuel valve positioning, primary air valve or damper positioning and secondary air valve or damper positioning.
Inventors
- 👤 Seymour Seider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:24
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/08; F23N2235/00; F23N2235/02
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
69 words
Combustion control apparatus comprising a fuel input means, control means for regulating said fuel input means, smoke density detecting means for detecting and measuring the density of smoke generated by combustion of said fuel aNd for adjusting said control means in accordance with said density, and smoke accumulating means for amplifying the density of said smoke to facilitate the detecting and measuring of the same by said detecting means.
Claim 2
Dependent Claim
69 words
Combustion control apparatus comprising a fuel input means, control means for regulating said fuel input means, smoke density detecting means for detecting and measuring the density of smoke generated by combustion of said fuel aNd for adjusting said control means in accordance with said density, and smoke accumulating means for amplifying the density of said smoke to facilitate the detecting and measuring of the same by said detecting means.
Claim 3
Dependent Claim
42 words
Apparatus as claimed in claim 1 wherein said fuel input means includes further means for the introduction of an oxygen containing gas into said input means, said control means and detecting means regulating the introduction of said gas by said further means.
Claim 4
Dependent Claim
43 words
Apparatus as claimed in claim 1 comprising a combustion chamber, and admission means for the admission of an oxygen containing gas into said chamber, said control means and detecting means regulating the admission of said gas into the chamber by said admission means.
Claim 5
Dependent Claim
42 words
Apparatus as claimed in claim 3 wherein said fuel input means includes further means for the introduction of an oxygen containing gas into said input means, said control means and detecting means regulating the introduction of said gas by said further means.
Claim 6
Dependent Claim
70 words
Apparatus as claimed in claim 1 comprising a flue for venting said smoke and wherein said detecting means includes a source of light and a photoelectric cell arranged transversely of said flue and defining a sighting axis, said amplifying means including a concave shield facing against the direction of travel of the smoke in said flue and at least overlapping said axis to accumulate smoke between the source and cell.
Claim 7
Dependent Claim
70 words
Apparatus as claimed in claim 2 comprising a flue for venting said smoke and wherein said detecting means includes a source of light and a photoelectric cell arranged transversely of said flue and defining a sighting axis, said amplifying means including a concave shield facing against the direction of travel of the smoke in said flue and at least overlapping said axis to accumulate smoke between the source and cell.
Claim 8
Dependent Claim
70 words
Apparatus as claimed in claim 3 comprising a flue for venting said smoke and wherein said detecting means includes a source of light and a photoelectric cell arranged transversely of said flue and defining a sighting axis, said amplifying means including a concave shield facing against the direction of travel of the smoke in said flue and at least overlapping said axis to accumulate smoke between the source and cell.
Claim 9
Dependent Claim
71 words
Apparatus as claimed in claim 4 comprising a flue for venting said smoke and wherein said detecting means includes a source of light and a photoelectric cell arranged transversely of said flue and defining a sighting axis, said amplifying means including a concave shield facing against the direction of travel of the smoke in said flue and at least overlapping said axis to to accumulate smoke between the source and cell.
Claim 10
Dependent Claim
19 words
Apparatus as claimed in claim 5 wherein said shield has a cross-section which is a segment of a circle.
Claim 11
Dependent Claim
15 words
Apparatus as claimed in claim 5 wherein said shield has a cross-section which is triangular.
Claim 12
Dependent Claim
19 words
Apparatus as claimed in claim 5 wherein said shield has a cross-section which is a segment of a polygon.
Claim 13
Dependent Claim
25 words
Apparatus as claimed in claim 2 wherein said control means includes a single motor for controlling both said fuel input means and said further means.
Claim 14
Dependent Claim
25 words
Apparatus as claimed in claim 3 wherein said control means includes a single motor for controlling both said fuel input means and said admission means.
Claim 15
Dependent Claim
27 words
Apparatus as claimed in claim 4 wherein said control means includes a single motor for controlling said fuel input means, said further means and said admission means.
Claim 16
Dependent Claim
23 words
Apparatus as claimed in claim 2 wherein said control means includes separate motors for controlling said fuel input means and said further means.
Claim 17
Dependent Claim
23 words
Apparatus as claimed in claim 3 wherein said control means includes separate motors for controlling said fuel input means and said admission means.
Claim 18
Dependent Claim
26 words
Apparatus as claimed in claim 4 wherein said control means includes separate motors for controlling said fuel input means, said further means and said admission means.
Claim 19
Dependent Claim
21 words
Apparatus as cLaimed in claim 5 comprising tubular supports respectively supporting said source and cell in opposite sides of said flue.
Claim 20
Dependent Claim
25 words
Apparatus as claimed in claim 18 wherein said supports include sections of thermally insulating material to isolate the source and cell thermally from said flue.
Claim 21
Dependent Claim
38 words
Apparatus as claimed in claim 18 comprising blowers connected to said tubular supports to pressurize the same and cool the said source and cell and to minimize contamination of the source and cell by solids from the smoke.
Claim 22
Dependent Claim
28 words
Apparatus as claimed in claim 1 comprising an adjustable smoke deflector in the flue upstream of said smoke accumulating means to direct said smoke towrads the accumulating means.
Claim 23
Dependent Claim
27 words
Apparatus as claimed in claim 21 comprising means hingeably supporting said deflector in the flue and means for adjusting the angle of the deflector in said flue.
Claim 24
Dependent Claim
47 words
Apparatus as claimed in claim 1, wherein said control means has a regulating limit, comprising alarm means for indicating the reaching of said limit and delay means to prevent the actuation of said alarm means until the limit has been reached for a predetermined period of time.
Claim 25
Dependent Claim
64 words
Apparatus as claimed in claim 1 wherein said fuel input means includes a fuel storage means, a pump connected to said storage means, a burner, a first valve coupling said pump to said burner, a plurality of return by-pass valves returning said fuel to said storage means to reduce the supply of fuel to said storage means, and solenoid means to control said valves.
Claim 26
Dependent Claim
29 words
Apparatus as claimed in claim 24 wherein said by-pass valves and in cascade arrangement and said solenoid means includes solenoids associated with the by-pass valves to control the latter.
Claim 27
Dependent Claim
23 words
Apparatus as claimed in claim 25 wherein said first valve is a normally closed valve and the by-pass valves are normally open valves.
Claim 28
Dependent Claim
31 words
Apparatus as claimed in claim 1 wherein said control means includes a modulating motor coupled to said detecting means and mechanical linkage means coupling said motor to said fuel input means.
Claim 29
Dependent Claim
56 words
Apparatus as claimed in claim 1 wherein said control means includes a modulating motor, analog to digital conversion means coupled to said detecting means, said detecting means generating an electrical signal which is converted into a digital signal by said conversion means, and triac switch means controlled by said conversion means to operate said modulating motor.
Claim 30
Dependent Claim
27 words
Apparatus as claimed in claim 28 comprising an amplifier means coupled between said detecting means and conversion means, and offset control means coupled to said amplifier means.
Claim 31
Dependent Claim
18 words
Apparatus as claimed in claim 29 comprising a voltage divider coupled to and controlled by said detecting means.
Claim 32
Dependent Claim
18 words
Apparatus as claimed in claim 30 comprising a resistor network coupled between said motor and triac switch means.
Claim 33
Dependent Claim
20 words
Apparatus as claimed in claim 5 wherein said shield includes a plurality of spaced parts arranged transversely of said flue.
Claim 34
Dependent Claim
16 words
Apparatus as claimed in claim 5 wherein said shield is provided with at least one vent.
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) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |