REMOTE CONTROL SYSTEM FOR A ROOM AIR CONDITIONER AND/OR HEAT PUMP

• US 20120053738A1
• Filed: 10/07/2011
• Published: 03/01/2012
• Est. Priority Date: 11/24/2009
• Status: Abandoned Application

• Current Assignee: Friedrich Air Conditioning Company
• Original Assignee: Friedrich Air Conditioning Company
• Inventors: Lingrey, David J., Eicher, Kevin L., Cagle, George
• Application Number:
  US13/268,216
• Publication Number:
  US 20120053738A1
• Time in Patent Office: Days
• US Class Current: 700/278
• CPC Class Codes: F24F 11/30 for purposes related to the operation of the system, e.g. for safety or monitoring
• CPC Class Codes: F24F 11/38 Failure diagnosis
• CPC Class Codes: F24F 11/39 Monitoring filter performance
• CPC Class Codes: F24F 11/52 Indication arrangements, e.g. displays
• CPC Class Codes: F24F 11/58 using Internet communication
• CPC Class Codes: F24F 11/67 Switching between heating and cooling modes
• CPC Class Codes: F24F 11/70 Control systems characterised by their outputs; Constructional details thereof
• CPC Class Codes: F24F 11/77 by controlling the speed of ventilators
• CPC Class Codes: F24F 11/80 for controlling the temperature of the supplied air
• CPC Class Codes: F24F 11/84 using valves
• CPC Class Codes: F24F 11/86 by controlling compressors within refrigeration or heat pump circuits
• CPC Class Codes: F24F 2110/10 Temperature
• CPC Class Codes: F24F 2110/20 Humidity
• CPC Class Codes: F24F 2140/00 Control inputs relating to system states
• CPC Class Codes: F24F 2140/12 Heat-exchange fluid pressure
• CPC Class Codes: F24F 2140/20 Heat-exchange fluid temperature
• CPC Class Codes: G05D 23/1905 associated with tele control

Abstract

A universal control system is provided for a room air conditioner or heat pump that has a number of sensor inputs. An electronic control system with a microcontroller and microcomputer are used to provide a large number of operations that can be performed by (1) manufacturer, (2) end users and (3) maintenance personnel. The manufacturer can load different versions of a software program to match the unit. The end user can program in a large number of different conditions or schedules the end user finds desirable, plus the end user is advised of maintenance requirements or faults. The maintenance personnel may perform diagnostics, determine fault history, upload improved or replacement software, as well as the numerous maintenance functions normally performed by maintenance personnel. Remote control is provided for changing operating conditions of the air conditioner/heat pump.

Claims

1. An electronic control system for communicating with an end user of a room air conditioner and/or heat pump having a compressor, an accumulator, refrigerant/heating fluid, outdoor coil, indoor coil, switching valve, cooling/heating capillary tube, a fan and a blower;

said electronic control system comprising;

sensor inputs for determining (a) pressure of said refrigerant/heating fluid, (b) temperature of indoor air, (c) temperature of outdoor air, (d) temperature of said outdoor coil, (e) temperature of said indoor coil (f) temperature of air on discharge side of said indoor coil and (g) humidity of indoor air;

outputs for controlling (a) said compressor, (b) said reversing valve, (c) said fan and (d) said blower;

between said sensor inputs and said outputs being located a main control and a user interface connected thereto, said main control including a microcontroller and said user interface including a microcomputer; and

a remote communication with said microcontroller of said main control for communicating information, said information exchanging data with said microcontroller which may control operation of (a) said compressor, (b) said reversing valve, (c) said fan, and (d) said blower.

2. The electronic control system for communicating with an end user of said room air conditioner/heat pump as recited in claim 1, wherein said control operation may be overridden in said microcontroller by said end user.

3. The electronic control system for communicating with an end user of said room air conditioner/heat pump as recited in claim 2 wherein said remote communication for said communicating information includes a driver and communications protocol and a message protocol.

4. The electronic control system for communicating with an end user of said room air conditioner/heat pump as recited in claim 3 wherein said remote communication is provided via a Wi-Fi module.

5. The electronic control system for communicating with an end user of said room air conditioner/heat pump as recited in claim 3 wherein said remote communication includes connection to a Smart Grid for controlling operation of a room air conditioner and/or heat pump.

6. The electronic control system for communicating with an end user of said room air conditioner/heat pump as recited in claim 3 wherein said remote communication includes a USB port connecting to said microcontroller, said USB port allowing access for maintenance or updating of said room air conditioner and/or heat pump.

7. The electronic control system for communicating with an end user of said room air conditioner/heat pump as recited in claim 4, 5, or 6 wherein a program in said microcontroller periodically checks to see if said communicating information has been received and to execute said control operation.

8. The electronic control system for communicating with an end user of said room air conditioner/heat pump as recited in claim 7 wherein said periodic checking by said program includes determining if there has been (a) a configuration change, (b) new message or (c) a button pushed.

9. The electronic control system for communicating with an end user of said room air conditioner/heat pump as recited in claim 8 wherein said periodic checking by said program also provides an update on said Wi-Fi module and/or said Smart Grid.

10. The electronic control system for communicating with an end user of said room air conditioner/heat pump as recited in claim 9 wherein said program processes said communicating information from said Wi-Fi module and/or said Smart Grid.

11. A method of operating an HVAC system by an end user for room temperature control, said method including the following steps:

sensing various conditions including (a) pressure of a refrigerant/heating fluid, (b) temperature of indoor air, (c) temperature of outdoor air, (d) temperature of an outdoor coil, (e) temperature of an indoor coil, (f) temperature of air on a discharge side of said indoor coil and (g) humidity of said indoor air or outdoor air;

continuously providing sensor information from said sensing step into a microcontroller;

processing said sensor information in said microcontroller send outputs for controlling (a) a compressor, (b) a reversing valve, (c) speed of a blower, (d) speed of a fan, and (e) a heater;

communicating with said end user conditions of said HVAC system via a user interface;

accepting changes in operating parameters from said end user via said user interface;

periodically checking remote inputs for remote commands to said microcontroller;

implementing said remote commands unless overridden by said end users; and

said changes internally operating said microcontroller with (a) said sensor information;

(b) via said user interface; and

9c) said remote commands.

12. The method of operating an HVAC system by an end user for room temperature control as recited in claim 11 wherein said remote inputs have a driver and communication protocol and a message protocol.

13. The method of operating an HVAC system by an end user for room temperature control as recited in claim 12 wherein said remote inputs include Wi-Fi connection to the Internet, said remote commands being received via the Internet.

14. The method of operating an HVAC system by an end user for room temperature control as recited in claim 12 wherein said remote inputs further include connection to a Smart Grid for control by said Smart Grid.

15. The method of operating an HVAC system by an end user for room temperature control as recited in claim 13 or 14 wherein said periodically checking step includes determining if (a) there has been a configuration change, (b) a new message has been received, (c) a button has been pushed, and if “

yes”

processing the change.

16. The method of operating an HVAC system by an end user for room temperature control as recited in claim 15 wherein said new message can be from said Wi-Fi connection or said Smart Grid.

17. The method of operating an HVAC system by an end user for room temperature control as recited in claim 16 wherein during said implementing step any of the following may be changed:

(a) said compressor, (b) said receiving valve, (c) said speed of said blower, (d) said speed of said fan, or (e) said heater.