Modular flame amplifier system with remote sensing

• US 10,288,286 B2
• Filed: 09/29/2015
• Issued: 05/14/2019
• Est. Priority Date: 09/30/2014
• Status: Active Grant

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Solosky, Rick, Patton, Paul, McCarthy, Timothy
• Primary Examiner(s): Basichas, Alfred
• Application Number:
  US14/869,472
• Publication Number:
  US 20160091205A1
• Time in Patent Office: 1,323 Days
• CPC Class Codes: F23N 2223/38 Remote control
• CPC Class Codes: F23N 2229/12 with flame rectification current detecting means
• CPC Class Codes: F23N 2229/14 using two or more different types of flame sensor
• CPC Class Codes: F23N 2229/16 using two or more of the same types of flame sensor
• CPC Class Codes: F23N 5/082 using electronic means
• CPC Class Codes: F23N 5/265 using electronic means

Abstract

A modular flame amplifier system having a base module, a burner control and one or more flame amplifier modules connected to the burner control. One or more sensors may be connected to the one or more flame amplifier modules. Some of the flame amplifiers may be a long distance from the burner control module. Some of the flame amplifiers may be connected to the burner control via a cable. The connection between some of the flame amplifiers and the respective sensors may be less noise tolerant than the long cable connection between the one or more flame amplifiers and the burner control. One or more flame amplifiers may be mounted on the same rail as the burner control or another rail remote from the burner control. Two or more sensors may be connected in one or more of several configurations along with delay in some configurations.

Claims

1. A modular flame amplifier system comprising:

a burner control;

one or more modules connected to the burner control; and

one or more sensors connected to the one or more modules; and

wherein;

some of the one or more modules are flame amplifiers;

some of the flame amplifiers have a connection within a first distance to the respective flame sensors;

some of the flame amplifiers are connected to the burner control via a cable;

the cable between some of the flame amplifiers and the burner control is less than a second distance such as one kilometer long and noise tolerant; and

the connection between some of the flame amplifiers and the respective sensors is less noise tolerant than the cable between the one or more flame amplifiers and the burner control.

2. The system of claim 1, wherein:

the burner control is mounted on a rail; and

some of the one or more flame amplifiers are mounted on the rail.

3. The system of claim 1, wherein some of the sensors are connected into an OR configuration in that if either sensor is on, a flame is indicated.

4. The system of claim 1, wherein two of the sensors are connected into an AND configuration in that both sensors need to be on to indicate a flame.

5. The system of claim 1, wherein two of the sensors are on separately in that a first sensor is on immediately and a second sensor turns on after a delay of when the first sensor turns on.

6. The system of claim 5, wherein:

the first sensor is situated at a first end of a bed burner;

the second sensor is situated at a second end of the bed burner;

at a start-up of the bed burner, the first detector detects that a flame has initially been established at the first end of the bed burner; and

after the delay, which is an amount of time that the flame reaches the second end of the bed burner, the second sensor detects whether the flame has reached the second end of the burner.

7. The system of claim 1, wherein:

a flame amplifier is a plug-in module that attaches to the burner control;

each flame amplifier is designed to match a type of a flame sensor; and

more than one flame sensor can be connected to a flame amplifier.

8. The system of claim 1, wherein:

the modules are connected to a multi-drop RS485 bus;

each of the modules have unique and verifiable identifier;

module connections are made in a round-robin fashion; and

a master/slave relationship exists between the base control module and the modules.

9. A modular flame amplifier mechanism comprising:

a burner control module;

one or more flame amplifier modules;

a first flame amplifier module situated adjacent to the burner control module and with a connection between the burner control module and the first flame amplifier module that provides an electrical connection between the first flame amplifier module and the burner control module; and

a first flame sensor connected to the first flame amplifier module; and

wherein;

the first flame amplifier module can be situated remotely from the burner control and have a first cable electrically connected between the first flame amplifier module and the burner control module;

the first sensor is electrically connected with a second cable to the first flame amplifier module; and

the first cable is longer than the second cable.

10. The mechanism of claim 9, further comprising:

a second flame amplifier module situated adjacent to the burner control module with a connection between the burner control module and the second flame amplifier module that provides an electrical connection between the second flame amplifier module and the burner control module; and

a second flame sensor connected to the second flame amplifier module; and

wherein;

the second flame amplifier module can be situated remotely from the burner control and have a third cable electrically connected between the second flame amplifier module and the burner control module;

the second sensor is electrically connected with a fourth cable to the second flame amplifier module; and

the third cable is longer than the fourth cable.

11. The mechanism of claim 10, wherein an arrangement of the first and second flame sensors is selected from a group consisting of sensors connected into an OR configuration in that if either sensor is on a flame is indicated, sensors connected into an AND configuration in that both sensors need to be on to indicate a flame, sensors on separately in that a first sensor is on immediately and second sensor turns on after a delay of when the first sensor turns on, sensors in a dual OR configuration with each sensor having a backup sensor for redundancy, sensors in an AND configuration and each of the two sensors has a backup sensor, and sensors in a dual configuration where one sensor is on immediately and another sensor is on after a delay and each sensor has a backup sensor for redundancy.

12. The mechanism of claim 11, further comprising:

one or more additional flame amplifier modules connected to the burner control module; and

one or more additional sensors connected to the one or more additional flame amplifier modules, respectively.