Heating furnace using auto heating commissioning mode

Patent metadata

Field	Value
Publication number	US-10352572-B2
Application number	US-201615006604-A
Country	US
Kind code	B2
Filing date	Jan 26, 2016
Priority date	Jan 26, 2016
Publication date	Jul 16, 2019
Grant date	Jul 16, 2019

Abstract

A heating control device including input/output ports, a memory operable to store smoke output thresholds, and a microprocessor. The microprocessor is configured to transmit a first electrical signal to operate an air circulation fan at a first speed and a heating unit in a first configuration to burn a lubricant at a first temperature where less than all of the burners are active. The microprocessor is further configured to obtain a smoke output measurement for the first temperature, compare the smoke output measurement to the smoke output threshold, and transmit a second electrical signal to transition the air circulation fan to a second speed to burn the lubricant at a second temperature that is greater than the first temperature when the smoke output measurement is less than the smoke output threshold and is less than the first temperature when the smoke output measurement is greater than the smoke output threshold.

First claim

The invention claimed is:

1. A heating control device comprising:
input/output (I/O) ports configured to transmit and receive electrical signals;
a memory operable to store a smoke output threshold;
a microprocessor operably coupled to the I/O ports and the memory, and configured to:
operate an air circulation fan at a first speed and a heating unit in a first configuration with at least one active burner from a plurality of burners to burn a lubricant at a first temperature, wherein less than all of the burners are active when the heating unit is in the first configuration;
obtain a smoke output measurement for the first temperature;
compare the smoke output measurement to the smoke output threshold; and
transition the air circulation fan from the first speed to a second speed to burn the lubricant at a second temperature, wherein the second temperature is greater than the first temperature when the smoke output measurement is less than the smoke output threshold, and wherein the second temperature is less than the first temperature when the smoke output measurement is greater than the smoke output threshold.

2. The device of claim 1 , wherein:
the second speed is less than the first speed when the smoke output measurement is less than the smoke output threshold; and
the second speed is greater than the first speed when the smoke output measurement is greater than the smoke output threshold.

3. The device of claim 1 , wherein the microprocessor is configured to determine the second speed using the smoke output measurement and a temperature map that maps smoke output measurements to speeds of the air circulation fan.

4. The device of claim 1 , wherein operating the heating unit in the first configuration comprises:
activating the at least one active burner using a first gas valve; and
deactivating at least one burner from the plurality of burners using a second gas valve.

5. The device of claim 1 , wherein operating the heating unit in the first configuration comprises:
activating the at least one active burner using a first segment of a gas manifold; and
deactivating at least one burner from the plurality of burners using a second segment of the gas manifold, wherein gas communication between the first segment and the second segment is disallowed.

6. The device of claim 1 , wherein the microprocessor is configured to transition the heating unit from the first configuration to a second configuration, wherein transitioning the heating unit to the second configuration comprises switching from a first set of active burners in a first segment of a gas manifold to a second set of active burners in a second segment of the gas manifold, wherein:
the second set of active burners has more active burners than the first set of active burners when the smoke output is less than the smoke output threshold; and
the second set of active burner has less active burners than the first set of active burners when the smoke output is greater than the smoke output threshold.

7. The device of claim 1 , wherein the microprocessor is configured to transition the heating unit from the first configuration to a second configuration, wherein transitioning the heating unit to the second configuration comprises:
increasing a pressure for a gas valve for the active burners when the smoke output measurement is less than the smoke output threshold; and
decreasing a pressure for the gas valve for the active burners when the smoke output measurement is greater than the smoke output threshold.

8. A heating control method comprising:
operating, by a microprocessor, an air circulation fan at a first speed and a heating unit in a first configuration with at least one active burner from a plurality of burners to burn a lubricant at a first temperature, wherein less than all of the burners are active when the heating unit is in the first configuration;
measuring, by the microprocessor, a smoke output measurement for the first temperature;
comparing, by the microprocessor, the smoke output measurement to a smoke output threshold; and
transitioning, by the microprocessor, the air circulation fan from the first speed to a second speed to burn the lubricant at a second temperature, wherein the second temperature is greater than the first temperature when the smoke output measurement is less than the smoke output threshold, and wherein the second temperature is less than the first temperature when the smoke output measurement is greater than the smoke output threshold.

9. The method of claim 8 , wherein:
the second speed is less than the first speed when the smoke output measurement is less than the smoke output threshold; and
the second speed is greater than the first speed when the smoke output measurement is greater than the smoke output threshold.

10. The method of claim 8 , further comprising determining, by the microprocessor, the second speed using the smoke output measurement and a temperature map that maps smoke output measurements to speeds of the air circulation fan.

11. The method of claim 8 , wherein operating the heating unit in the first configuration comprises:
activating the at least one active burner using a first gas valve; and
deactivating at least one burner from the plurality of burners using a second gas valve.

12. The method of claim 8 , wherein operating the heating unit in the first configuration comprises:
activating the at least one active burner using a first segment of a gas manifold; and
deactivating at least one burner from the plurality of burners using a second segment of the gas manifold, wherein gas communication between the first segment and the second segment is disallowed.

13. The method of claim 8 , further comprising transitioning, by the microprocessor, the heating unit from the first configuration to a second configuration, wherein transitioning the heating unit to the second configuration comprises switching from a first set of active burners in a first segment of a gas manifold to a second set of active burners in a second segment of the gas manifold, wherein:
the second set of active burners has more active burners than the first set of active burners when the smoke output is less than the smoke output threshold; and
the second set of active burner has less active burners than the first set of active burners when the smoke output is greater than the smoke output threshold.

14. The method of claim 8 , further comprising transitioning, by the microprocessor, the heating unit from the first configuration to a second configuration, wherein transitioning the heating unit to the second configuration comprises:
increasing a pressure for a gas valve for the active burners when the smoke output measurement is less than the smoke output threshold; and
decreasing a pressure for the gas valve for the active burners when the smoke output measurement is greater than the smoke output threshold.

15. A heating control method comprising:
operating, by a microprocessor, an air circulation fan at a first speed and a heating unit in a first configuration with at least one active burner from a plurality of burners to bum a lubricant at a first temperature, wherein less than all of the burners are active when the heating unit is in the first configuration;
measuring, by the microprocessor, a smoke output measurement for the first temperature;
comparing, by the microprocessor, the smoke output measurement to a smoke output threshold; and
transitioning, by the microprocessor, the heating unit from the first configuration to a second configuration to burn the lubricant at a second temperature, w

Assignees

• Lennox Ind Inc

Inventors

• Perez Eric M
• Beste Mark G
• Schneider Steven

Classifications

• F23N2241/02

  Space-heating · CPC title

• F23N2223/08

  Microprocessor; Microcomputer · CPC title

• F24D2220/042

  Temperature sensors · CPC title

• F24D2220/0207

  Pumps · CPC title

• F24D2220/044

  Flow sensors · CPC title