US3843310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion control device
Assignee: Individual
•
Filing: 1973-09-04
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Granted: 1974-10-22
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Expires: 1993-09-04
Abstract
Abstract A device for controlling the variation of power stage of the gas burners as a function of the variation of the pressure of the feed gas characterized by a pressure sensitive device which in response to two or more values of the gas pressure will close or open circuits which, by means of the predisposed programs on the control board, will act on the power operated valve or electrovalve that chokes the gas, and will adjust the gas feed changing the power state of the burner.
Inventors
- 👤 G Massi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:48
CPC Classifications
F; F17; F17D; F17D1/00; F17D1/02; F17D1/04; F23; F23D; F23D14/00; F23D14/46; F23D14/60; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7761
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
195 words
A device for controlling the variations of a power stage of a gas burner as a function of the variation of the pressure of the gas being supplied thereto, said device comprising an electrovalve for choking the flow of gas in a conduit extending to the burner, a pressure sensitive device arranged to sense the pressure of the gas flowing in said conduit, and circuit means interconnecting said pressure sensitive device and the electrovalve which circuit means include a control board containing a predetermined program, said pressure sensitive device in response to at least two values of said gas pressure opening and closing said circuits to actuate the electrovalve so that the rate of gas feed to the burner is adjusted to change the power state thereof, said burner conduit having a by-pass line extending to a head of the burner to provide a pilot flame, said by-pass link including means for controlling flow therethrough, and wherein said pressure sensitive element also controls operation of the means for controlling flow in the by-pass line in response to the sensed pressure to enhance the variation in the rate of flow caused by operation of the electrovalve.
Claim 2
Independent Claim
195 words
A device for controlling the variations of a power stage of a gas burner as a function of the variation of the pressure of the gas being supplied thereto, said device comprising an electrovalve for choking the flow of gas in a conduit extending to the burner, a pressure sensitive device arranged to sense the pressure of the gas flowing in said conduit, and circuit means interconnecting said pressure sensitive device and the electrovalve which circuit means include a control board containing a predetermined program, said pressure sensitive device in response to at least two values of said gas pressure opening and closing said circuits to actuate the electrovalve so that the rate of gas feed to the burner is adjusted to change the power state thereof, said burner conduit having a by-pass line extending to a head of the burner to provide a pilot flame, said by-pass link including means for controlling flow therethrough, and wherein said pressure sensitive element also controls operation of the means for controlling flow in the by-pass line in response to the sensed pressure to enhance the variation in the rate of flow caused by operation of the electrovalve.
Claim 3
Dependent Claim
83 words
A device according to claim 1, wherein said burner is a blown air burner having an air inlet duct provided with a choking valve for regulating the flow of air through the inlet and wherein said electrovalve includes means for adjusting the setting of the choking valve in response to changes in the rate of gas flow through said electrovalve so that the desired air-gas ratio for maximum combustion efficiency is maintained for variation in the amount of gas supplied to the burner.
Claim 4
Dependent Claim
33 words
A device according to claim 2, wherein said means for adjusting comprises a power operated adjusting device on said choking valve and a servo attached to said electrovalve to control said adjusting device.
Claim 5
Dependent Claim
22 words
A device according to claim 2, wherein said means for adjusting comprises a mechanical linkage interconnecting the choking valve to the electrovalve.
Claim 6
Independent Claim
120 words
A device for controlling the variations of a power stage of a gas burner as a function of the variation of the pressure of the gas being supplied thereto, comprising an electrovalve for choking the flow of gas in a conduit extending to a head of the burner, said conduit having a by-pass line to provide a pilot flame and including means for controlling flow therethrough and a pressure sensitive element arranged to sense the pressure of the gas flowing in said conduit and to control the operation of said means for controlling the flow in the by-pass line in response to the sensed pressure to enhance the variation in the rate of flow caused by operation of said electrovalve.
Claim 7
Independent Claim
120 words
A device for controlling the variations of a power stage of a gas burner as a function of the variation of the pressure of the gas being supplied thereto, comprising an electrovalve for choking the flow of gas in a conduit extending to a head of the burner, said conduit having a by-pass line to provide a pilot flame and including means for controlling flow therethrough and a pressure sensitive element arranged to sense the pressure of the gas flowing in said conduit and to control the operation of said means for controlling the flow in the by-pass line in response to the sensed pressure to enhance the variation in the rate of flow caused by operation of said electrovalve.
Claim 8
Dependent Claim
83 words
A device according to claim 5, wherein said burner is a blown air burner having an air inlet duct provided with a choking valve for regulating the flow of air through the inlet and wherein said electrovalve includes means for adjusting the setting of the choking valve in response to changes in the rate of gas flow through said electrovalve so that the desired air-gas ratio for maximum combustion efficiency is maintained for variation in the amount of gas supplied to the burner.
Claim 9
Dependent Claim
33 words
A device according to claim 6, wherein said means for adjusting comprises a power operated adjusting device on said choking valve and a servo attached to said electrovalve to control said adjusting device.
Claim 10
Dependent Claim
22 words
A device according to claim 6, wherein said means for adjusting comprises a mechanical linkage interconnecting the choking valve to the electrovalve.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |