Thermostat temperature compensation modeling

Patent metadata

Field	Value
Publication number	US-11719456-B2
Application number	US-202017114095-A
Country	US
Kind code	B2
Filing date	Dec 7, 2020
Priority date	Apr 2, 2014
Publication date	Aug 8, 2023
Grant date	Aug 8, 2023

Abstract

Systems and methods for configuring a temperature control system of a heating, ventilation, and air conditioning (HVAC) system controller are described. The HVAC system controller includes a processor in communication with a memory and a user interface. The processor is configured to determine a dynamic parameter related to a dynamic property of a conditioned space and maintain a controlled environment within the conditioned space by utilizing the dynamic parameter.

First claim

What is claimed is:

1. A method of operating a heating, ventilation, and air conditioning (HVAC) system, comprising:
monitoring a temperature in a conditioned space during a first period when the HVAC system is operating and a second period when the HVAC system is not operating;
determining a first rate of change of the temperature in the conditioned space during at least a portion of the first period;
determining a second rate of change of the temperature in the conditioned space during at least a portion of the second period;
determining a thermal core temperature of a thermal core of the conditioned space based on the first rate of change and the second rate of change;
adjusting a set point of the HVAC system based on the thermal core temperature.

2. The method of claim 1 , further comprising operating the HVAC system based on the adjusted set point.

3. The method of claim 1 , wherein the set point of the HVAC system is a temperature set point.

4. The method of claim 3 , wherein adjusting the set point of the HVAC system includes determining a heating or cooling offset based on the thermal core temperature, comparing the heating or cooling offset to a predetermined value, and modifying a current set point upwards or downwards when the heating or cooling offset is greater than the predetermined value.

5. The method of claim 4 , wherein the heating or cooling offset is determined based on a difference between the thermal core temperature and the current set point.

6. The method of claim 1 , wherein adjusting the set point of the HVAC system is applying a temporary adjustment to the set point.

7. The method of claim 1 , wherein adjusting the set point of the HVAC system is changing a value of the set point.

8. The method of claim 1 , further comprising heating one or more portions of the thermal core.

9. A control system for a heating, ventilation, and air conditioning (HVAC) system, comprising:
one or more temperature sensors configured to monitor a temperature in a conditioned space of the HVAC system; and
a controller, configured to:
receive the temperature in the conditioned space from the one or more temperature sensors during a first period when the HVAC system is operating and a second period when the HVAC system is not operating;
determine a first rate of change of the temperature in the conditioned space during at least a portion of the first period;
determine a second rate of change of the temperature in the conditioned space during at least a portion of the second period;
determine a thermal core temperature of a thermal core of the conditioned space based on the first rate of change and the second rate of change; and
adjust a set point of the HVAC system based on the thermal core temperature.

10. The control system of claim 9 , wherein the controller is further configured to operate the HVAC system based on the adjusted set point.

11. The control system of claim 9 , wherein the set point of the HVAC system is a temperature set point.

12. The control system of claim 11 , wherein the controller is configured to adjust the set point of the HVAC system by determining a heating or cooling offset based on the thermal core temperature, comparing the heating or cooling offset to a predetermined value, and modifying a current set point upwards or downwards when the heating or cooling offset is greater than the predetermined value.

13. The control system of claim 12 wherein the controller is configured to determine the heating or cooling offset based on a difference between the thermal core temperature and the current set point.

14. The control system of claim 9 , wherein the controller is configured to adjust the set point of the HVAC system by applying a temporary adjustment to the set point.

15. The control system of claim 9 , wherein the controller is configured to adjust the set point of the HVAC system by changing a value of the set point.

16. The control system of claim 9 , further comprising a heater configured to heat one or more portions of the thermal core, and wherein the controller is configured to direct operation of the heater.

17. A heating, ventilation, and air conditioning (HVAC) system, comprising the control system of claim 9 wherein the HVAC system is configured to provide heating and/or cooling to the conditioned space.

18. The HVAC system of claim 17 , further comprising a furnace.

19. The HVAC system of claim 17 , further comprising an air conditioner.

20. The HVAC system of claim 17 , wherein the HVAC system is configured to provide heating and/or cooling to a second conditioned space, the HVAC system further comprising a second one or more sensors configured to monitor a temperature in the second conditioned space.

Assignees

• Trane Int Inc

Inventors

• Smith Christopher Blake
• Klein Kit W
• Wiltzius James J
• Land Iii Joseph George

Classifications

• F24F11/64 Primary

  using pre-stored data · CPC title

• F24F11/0001

  for ventilation (F24F11/30 takes precedence) · CPC title

• F24F11/30 Primary

  for purposes related to the operation of the system, e.g. for safety or monitoring · CPC title

• F24F11/50

  characterised by user interfaces or communication · CPC title

• F24F11/52

  Indication arrangements, e.g. displays · CPC title