Boiler control methods
AssigneeHoneywell International Inc.
InventorsPeter Anderson, Richard Simons, Henry Troost, Emil Costea
Life of this patent
Estimating the term…
Abstract
A method for controlling a boiler includes firing a boiler, and monitoring a temperature deviation between a boiler temperature and a heating temperature profile over time. If the temperature deviation exceeds an allowable deviation, the boiler is shut off.
Claims21
A method for controlling a boiler configured to provide a heated boiler fluid for heating a space of a building that is to be temperature controlled by the boiler, wherein the boiler including a burner, the method comprising:
- receiving a call for heat that is based on an air temperature sensed in the space of the building;
- firing the burner based on the call for heat;
- with the burner firing, monitoring over time a temperature deviation between a temperature of the boiler fluid of the boiler and a heating temperature profile, and if the temperature deviation exceeds an allowable deviation, shutting off the burner;
- and
- wherein the heating temperature profile represents an expected temperature response of the temperature of the boiler fluid over time to the burner firing;
- and
- subsequent to shutting off the burner, monitoring the temperature of the boiler fluid over time.
A method for controlling a boiler configured to provide a heated boiler fluid for heating a space of a building that is to be temperature controlled by the boiler, wherein the boiler including a burner, the method comprising:
- receiving a call for heat that is based on an air temperature sensed in the space of the building;
- firing the burner based on the call for heat;
- while firing the burner, monitoring over time a temperature difference between a first boiler temperature and a second boiler temperature, the first and second boiler temperatures being monitored by sensors at different boiler locations, and if the temperature difference exceeds a selected difference, shutting off the burner, wherein the first and second boiler temperatures are indicative of temperatures of the boiler fluid at different boiler locations;
- and
- monitoring a temperature deviation between the first boiler temperature and a heating temperature profile that represents an expected temperature response of the first boiler temperature over time to the burner firing, and if the temperature deviation exceeds an allowable deviation, shutting off the burner.
A boiler system configured to provide a heated boiler fluid for heating a space of a building that is to be temperature controlled by the boiler, the system comprising:
- a boiler that includes a burner;
- a thermostat disposed in the space of the building to provide one or more calls for heat to regulate the temperature in the space of the building;
- a sensor for sensing a boiler temperature indicative of a temperature of the boiler fluid;
- a controller for controlling firing of the burner based on the one or more calls for heat from the thermostat, the controller configured to compare over time the boiler temperature with a heating temperature profile, and to shut off the burner if a temperature deviation between the boiler temperature and the heating temperature profile exceeds an allowable deviation and to monitor the temperature of the boiler fluid over time subsequent to shutting off the burner;
- and
- wherein the heating temperature profile reflects an expected temperature response of the boiler temperature over time with the burner firing.
A method for controlling a boiler configured to provide a heated boiler fluid for heating a space of a building that is to be temperature controlled by the boiler, wherein the boiler including a burner, the method comprising:
- receiving a call for heat that is based on an air temperature sensed in the space of the building;
- firing the burner based on the call for heat;
- while firing the burner, monitoring over time a temperature difference between a first boiler temperature and a second boiler temperature, the first boiler temperature being measured proximate a water outlet of the boiler and the second boiler temperature being measured proximate a water return of the boiler;
- if the temperature difference exceeds a threshold, shutting off the burner,
- wherein the first and second boiler temperatures are indicative of the temperature of the boiler fluid proximate a water outlet and proximate a water return, respectively;
- and
- monitoring a temperature deviation between the first boiler temperature and a heating temperature profile that represents an expected temperature response of the first boiler temperature over time to the burner firing, and if the temperature deviation exceeds an allowable deviation, shutting off the burner.
Dependencies are inferred from the claim text.