Intelligent burner control system

• US 6,247,919 B1
• Filed: 12/07/1999
• Issued: 06/19/2001
• Est. Priority Date: 11/07/1997
• Status: Expired due to Term

• Current Assignee: Maxon Corp. (Honeywell International Inc.)
• Original Assignee: Maxon Corp. (Honeywell International Inc.)
• Inventors: Parker, John D., Welz, Albert W. Jr., Marchetti, Brenda J.
• Primary Examiner(s): CLARKE, SARA SACHIE
• Application Number:
  US09/456,229
• Time in Patent Office: 560 Days
• Field of Search: 431/12, 431/13, 431/17, 431/89, 340/606, 137/486, 137/487.5, 137/100, 137/554, 137/101.19, 110/190
• US Class Current: 431/13
• CPC Class Codes: F23N 1/022 using electronic means
• CPC Class Codes: F23N 2005/181 using detectors sensitive to rate of flow of air
• CPC Class Codes: F23N 2005/185 using detectors sensitive to rate of flow of fuel
• CPC Class Codes: F23N 2223/08 Microprocessor; Microcomputer
• CPC Class Codes: F23N 2233/08 with variable speed
• CPC Class Codes: F23N 2235/06 at the air intake
• CPC Class Codes: F23N 2235/16 variable flow or proportional valves
• CPC Class Codes: F23N 5/184 using electronic means
• CPC Class Codes: Y10T 137/8242 Electrical

Abstract

An intelligent burner control apparatus is configured to control the flow rate of a fluid flowing from a fluid supply to a burner. The apparatus includes a flow controller, a flow regulator, and a flow monitor. The flow controller includes a sensor configured to measure the flow rate of the fluid. The flow controller is configured to determine a flow control signal based on a measured fluid flow rate. The flow regulator is configured to receive the flow control signal and includes a valve movable to control the flow rate of the fluid in response to the flow control signal. The flow monitor is configured to monitor a change in the position of the valve with respect to the measured fluid flow rate and to produce an alarm signal when the change in the position of the valve with respect to the measured fluid flow rate is outside of a predetermined threshold.

Claims

1. An intelligent burner control apparatus for controlling the flow rate of a fluid flowing from a fluid supply to a burner, the apparatus comprising

a flow controller including a sensor configured to measure the flow rate of the fluid flowing from the fluid supply to the burner, the flow controller being configured to determine a flow control signal based on a measured fluid flow rate,

a flow regulator configured to receive the flow control signal, the flow regulator including a valve movable to control the flow rate of the fluid in response to the flow control signal, and

a flow monitor configured to monitor a change in the position of the valve with respect to the measured fluid flow rate.

2. The apparatus of claim 1, further comprising a communication network.

3. The apparatus of claim 2, further comprising a plurality of network control modules communicating with each other over the communication network.

4. The apparatus of claim 3, wherein the flow controller further includes one of the network control modules, and the one of the network control modules is coupled to the communication network to send and communicate onto the communication network the flow control signal.

5. The apparatus of claim 3, wherein the flow regulator further includes one of the network control modules, and the one of the network control modules is coupled to the communication network to receive the flow control signal.

6. The apparatus of claim 1, wherein the flow regulator further includes an actuator configured to move the valve in response to the flow control signal, the position of the actuator corresponding to the position of the valve.

7. An intelligent burner control apparatus for controlling the flow rate of a fluid flowing from a fluid supply to a burner, the apparatus comprising

a flow controller including a sensor configured to measure the flow rate of the fluid flowing from the fluid supply to the burner, the flow controller being configured to determine a flow control signal based on a measured fluid flow rate,

a flow regulator configured to receive the flow control signal, the flow regulator including a valve movable to control the flow rate of the fluid in response to the flow control signal, and

a flow monitor configured to monitor a position change of the valve with respect to the measured fluid flow rate and to produce an alarm signal when the position change of the valve with respect to the measured fluid flow rate is outside of a predetermined threshold.

8. The apparatus of claim 7, further comprising a communication network.

9. The apparatus of claim 8, further comprising a plurality of network control modules communicating with each other over the communication network.

10. The apparatus of claim 9, wherein the flow controller further includes one of the network control modules, and the one of the network control modules is coupled to the communication network to send and communicate onto the communication network the flow control signal.

11. The apparatus of claim 9, wherein the flow regulator further includes one of the network control modules, and the one of the network control modules is coupled to the communication network to receive the flow control signal.

12. The apparatus of claim 7, wherein the flow regulator further includes an actuator configured to move the valve in response to the flow control signal, the position of the actuator corresponding to the position of the valve.

13. A burner control apparatus comprising

a fuel flow controller including a fuel flow sensor configured to measure a fuel flow rate of fuel flowing from a fuel supply to a burner, the fuel flow controller being configured to determine a fuel flow control signal based on a measured fuel flow rate,

an air flow controller including an air flow sensor configured to measure an air flow rate of air flowing from an air supply to the burner, the air flow controller being configured to determine an air flow control signal based on a measured air flow rate,

a fuel flow regulator configured to receive the fuel flow control signal, the fuel flow regulator including a fuel valve positioned to intercept the fuel flowing from the fuel supply to the burner, the fuel valve being movable to control the fuel flow rate in response to the fuel flow control signal,

an air flow regulator configured to receive the air flow control signal, the air flow regulator including an air valve positioned to intercept the air flowing from the air supply to the burner, the air valve being movable to control the air flow rate in response to the air flow control signal, and

a flow monitor including a fuel flow rate monitor, a fuel valve monitor, an air flow rate monitor, and an air valve position monitor, the fuel flow rate monitor being configured to monitor the measured fuel flow rate, the fuel valve position monitor being configured to monitor a position change of the fuel valve relative to the measured fuel flow rate, the air flow rate monitor being configured to monitor the measured air flow rate, and the air valve position monitor being configured to monitor a position change of the air valve relative to the measured air flow rate.

14. The burner control apparatus of claim 13, further comprising a burner brain module configured to cooperate with the air and fuel flow controllers and the air and fuel flow regulators to control the flow of air and gas to the burner.

15. The burner control apparatus of claim 14, wherein the flow monitor includes a micro-processor embedded in the burner brain module.

16. The burner control apparatus of claim 13, wherein the air valve position monitor continuously monitors and records changes in the position of the air valve with respect to the measured air flow rate.

17. The burner control apparatus of claim 16, wherein the fuel valve position monitor continuously monitors and records changes in the position of the fuel valve with respect to the measured fuel flow rate.

18. The burner control apparatus of claim 13, further comprising a communication network and network control modules coupled to the communication network, the flow monitor including a micro-processor embedded in one of the network control modules.