HVAC control system providing user efficiency-versus-comfort settings that is adaptable for both data-connected and data-unconnected scenarios

Patent metadata

Field	Value
Publication number	US-10416627-B2
Application number	US-201715681045-A
Country	US
Kind code	B2
Filing date	Aug 18, 2017
Priority date	Sep 30, 2012
Publication date	Sep 17, 2019
Grant date	Sep 17, 2019

Abstract

The current application is directed to intelligent controllers that continuously, periodically, or intermittently monitor progress towards one or more control goals under one or more constraints in order to achieve control that satisfies potentially conflicting goals. An intelligent controller may alter aspects of control, dynamically, while the control is being carried out, in order to ensure that goals are obtained and a balance is achieved between potentially conflicting goals. The intelligent controller uses various types of information to determine an initial control strategy as well as to dynamically adjust the control strategy as the control is being carried out.

First claim

The invention claimed is:

1. A system for controlling a heating, ventilation, and air conditioning (HVAC) system, the HVAC system including an external unit located in an outside environment that facilitates heating or cooling based on thermal exchange with the outside environment, the system comprising:
one or more memory devices that store:
a setting indicating a user preference for comfort versus cost savings; and
historical data;

one or more processors that are programmed to perform operations comprising:
determining whether the system can receive outside temperature information;
based on a determination that the system can receive outside temperature information, controlling the external unit based at least in part on (i) one or more first parameters derived from a history of outside temperature values versus a rate of indoor temperature change from the historical data, and (ii) the setting indicating the user preference for comfort versus cost savings; and
based on a determination that the system cannot receive outside temperature information, controlling the external unit based at least in part on (i) one or more second parameters derived without regard to the history of outside temperature values, and (ii) the setting indicating the user preference for comfort versus cost savings.

2. The system of claim 1 , wherein the setting indicating a user preference for comfort versus cost savings comprises a user selection of comfort over cost savings.

3. The system of claim 1 , wherein the setting indicating a user preference for comfort versus cost savings comprises a user selection of cost savings over comfort.

4. The system of claim 1 , wherein the external unit comprises a heat pump with auxiliary resistive electrical heating.

5. The system of claim 1 , wherein it is determined whether the system can receive outside temperature information by determining whether a portion of the system located inside an enclosure is network-connected.

6. The system of claim 1 , wherein the system further comprises a connection to an outside temperature sensor.

7. The system of claim 1 , wherein the one or more first parameters indicate a length of time a primary HVAC function should operate alone before activating a secondary HVAC function.

8. The system of claim 7 , wherein the length of time the primary HVAC function should operate alone before activating the secondary HVAC function is (i) longer when the setting indicating the user preference for comfort versus cost savings indicates that cost savings is preferred, and (ii) shorter when the setting indicating the user preference for comfort versus cost savings indicates that comfort is preferred.

9. The system of claim 1 , wherein the one or more processors and the one or more memory devices are part of a controller located within an enclosure.

10. The system of claim 1 , wherein the one or more processors and the one or more memory devices are distributed across: (i) a cloud server, and (ii) a controller located within an enclosure.

11. A method for using a system to control a heating, ventilation, and air conditioning (HVAC) system, the HVAC system including an external unit located in an outside environment that facilitates heating or cooling based on thermal exchange with the outside environment, the method comprising:
storing a setting indicating a user preference for comfort versus cost savings;
storing historical data;
determining whether the system can receive outside temperature information;
based on a determination that the system can receive outside temperature information, controlling the external unit based at least in part on (i) one or more first parameters derived from a history of outside temperature values versus a rate of indoor temperature change from the historical data, and (ii) the setting indicating the user preference for comfort versus cost savings; and
based on a determination that the system cannot receive outside temperature information, controlling the external unit based at least in part on (i) one or more second parameters derived without regard to the history of outside temperature values, and (ii) the setting indicating the user preference for comfort versus cost savings.

12. The method of claim 11 , wherein the setting indicating a user preference for comfort versus cost savings comprises a user selection of comfort over cost savings.

13. The method of claim 11 , wherein the setting indicating a user preference for comfort versus cost savings comprises a user selection of cost savings over comfort.

14. The method of claim 11 , wherein the external unit comprises a heat pump with auxiliary resistive electrical heating.

15. The method of claim 11 , wherein determining whether the system can receive outside temperature information comprises determining whether a portion of the system located inside an enclosure is network-connected.

16. The method of claim 11 , wherein the system comprises a connection to an outside temperature sensor.

17. The method of claim 11 , wherein the one or more first parameters indicate a length of time a primary HVAC function should operate alone before activating a secondary HVAC function.

18. The method of claim 17 , wherein the length of time the primary HVAC function should operate alone before activating the secondary HVAC function is (i) longer when the setting indicating the user preference for comfort versus cost savings indicates that cost savings is preferred, and (ii) shorter when the setting indicating the user preference for comfort versus cost savings indicates that comfort is preferred.

19. The method of claim 11 , wherein the system comprises one or more processors and one or more memory devices, and the one or more processors and the one or more memory devices are part of a thermostat located within an enclosure.

20. The method of claim 11 , wherein the system comprises one or more processors and one or more memory devices, and the one or more processors and the one or more memory devices are distributed across: (i) a cloud server, and (ii) a thermostat located within an enclosure.

Assignees

• Google Llc

Inventors

• Matsuoka Yoky
• Ruff Joseph A
• Malhotra Mark

Classifications

• F24F11/62

  characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values · CPC title

• F24F11/30

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

• G05D23/1931

  to control the temperature of one space · CPC title

• H04L12/2834

  Switching of information between an external network and a home network (access arrangements H04L12/2856) · CPC title

• G05D23/1927

  using a plurality of sensors (G05D23/1902, G05D23/1917, and G05D23/1919 take precedence) · CPC title