Atmospheric gas burner and control system
OwnerJohn Meekerinventor
Life of this patent
Estimating the term…
Abstract
A gas and solid fuel burning chamber is provided with a control system for the safe and efficient operation of a gas burner. The simple control system uses multiple thermocouples in series to permit the safe operation of the gas burner in a vented device without the need for a draft hood. A combination of gas and solid fuel is demonstrated where gas can be used to start the solid or as an independent source of heat. The control system comprises generally of thermocouples for measuring the flame temperature, the combusted gas temperature and the overall chamber internal temperature and producing signals to regulate the flow of fuel to the gas burner in response thereto.
Claims23
An atmospheric heating device, comprising:
- a chamber;
- a burner located within said chamber receiving a fluid fuel from a fuel source for providing a flame and producing combusted gas;
- a flue in flow series with said chamber for receiving said combusted gas therefrom;
- a valve communicating with said burner to control the flow of fuel from said fuel source;
- and
- a control system for controlling said valve, wherein said control system comprises:
- a first temperature sensor located to sense the flame temperature at the burner to provide a first open signal when the flame temperature is above a predetermined value,
- a second temperature sensor located approximate said flue to sense the combusted gas temperature therein and provide a second open signal when said combusted gas temperature is above a predetermined value, and
- actuator means responsive to said control signals to operate said valve in accordance therewith.
A control system, for controlling a gas or liquid fuel burner in a combustion chamber, wherein said chamber communicates with a flue and said burner produces a flame and combusted gas burner fuel receives from a fuel source that is regulated by a valve, said control system comprising:
- a first temperature sensor for providing a first control signal indicating the burner flame temperature;
- a second temperature sensor for providing a second control signal representative of the combusted gas temperature;
- and
- control means responsive to said control signals for closing said valve when the indicated flame temperature or combusted gas temperature fall below predetermined values, whereby fuel flow is stopped in the event of flame outage or backflow in said flue.
A method of controlling a valve that regulates fuel supply to a gas burner or liquid fuel burner in a combustion chamber, comprising the steps of:
- measuring a flame temperature at said burner;
- measuring a combusted gas flow temperature exciting said chamber;
- and
- closing said valve in response to one or both said measured temperatures dropping below respective predetermined temperatures.
Dependencies are inferred from the claim text.