HVAC/R monitoring apparatus and method

• US 20050125102A1
• Filed: 12/07/2004
• Published: 06/09/2005
• Est. Priority Date: 12/08/2003
• Status: Active Grant

• Current Assignee: Hefie Jianqiao Sci-Tech Development Company Limited, Invisible Service Technicians LLC
• Original Assignee: Hefie Jianqiao Sci-Tech Development Company Limited
• Inventors: Corbman, Paul T., Nichols, Jared G.
• Granted Patent: US 7,274,973 B2
• Time in Patent Office: Days
• US Class Current: 700/276
• 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: G05B 15/02 electric
• CPC Class Codes: G05B 2219/2642 Domotique, domestic, home control, automation, smart house
• CPC Class Codes: G05B 2223/06 Remote monitoring
• CPC Class Codes: G05B 23/0235 based on a comparison with predetermined threshold or range, e.g. "classical methods", carried out during normal operation; threshold adaptation or choice; when or how to compare with the threshold

Abstract

An apparatus and method for monitoring the operation of a heating, ventilation, air conditioning and/or refrigeration (HVAC/R) system includes a first computer located on or near the HVAC/R system and a plurality of sensors positioned to sense various operating parameters of the HVAC/R system. The sensors communicate the sensed parameters to the first computer. When the first computer detects a condition of the HVAC/R system that requires attention, based on parameters sensed by the sensors, the first computer communicates with a second computer located remote from the first computer and transmits a message related to the condition.

Claims

1. An apparatus for monitoring operating data generated by components of a heating, ventilation, air conditioning and/or refrigeration (HVAC/R) system of a facility, the components configured to operate within pre-programmed operating parameters, the apparatus comprising:

a plurality of sensors configured to sense operating data from the components of the HVAC/R system;

a first computer located on or near the HVAC/R system configured to store the pre-programmed operating parameters for the components and operable to receive the operating data from the sensors and to generate error messages when the operating data is outside the pre-programmed operating parameters;

a second computer located remotely from the HVAC/R system and operable to communicate with the first computer to receive and store the operating data and the error messages generated by the first computer; and

a communications system configured to facilitate communications between the first computer and the second computer.

2. The apparatus of claim 1, wherein the first computer communicates the operating data and the error messages to the second computer only when the operating data is outside the pre-programmed operating parameters.

3. The apparatus of claim 1, wherein the first computer communicates the operating data to the second computer at a scheduled frequency.

4. The apparatus of claim 3, wherein the scheduled frequency of communication is selected from the group consisting of hourly, daily, weekly, and monthly.

5. The apparatus of claim 1, the components of the HVAC/R system including a control unit, wherein the first computer is physically integrated with the control unit.

6. The apparatus of claim 1, further comprising at least one peripheral device located remotely from the second computer and operable to communicate with the second computer to receive and store the operating data and the error messages stored by the second computer and to alert a user of the error messages.

7. The apparatus of claim 6, wherein the at least one peripheral device is selected from the group consisting of an additional computer, an email service, a fax service, a pager service, and a cell phone.

8. The apparatus of claim 7, wherein the peripheral device is a third computer, the third computer operable to be accessible from the Internet and to allow access of the operating data by the user.

9. The apparatus of claim 8, wherein the second computer is further operable to receive instructions from the third computer and to send the instructions to the first computer, the instructions relating to altering the pre-programmed operating parameters of at least one of the components of the HVAC/R system.

10. The apparatus of claim 1, wherein the first computer includes a real-time clock and a memory.

11. The apparatus of claim 10, wherein the first computer is configured to determine the number of heating-degree days and/or cooling-degree days using the real-time clock and memory.

12. An apparatus for monitoring operating data generated by components of a heating, ventilation, air conditioning and/or refrigeration (HVAC/R) system of a facility, the components configured to operate within pre-programmed operating parameters and including at least one of a furnace, an interior air conditioner (A/C) unit, an outside A/C unit, a fan motor, a blower, a supply air duct, a return air duct, an A/C suction line, an A/C fluid line, an air filter, an evaporator, an evaporator pan, a floor drain, a thermostat, a UV lamp, and a control unit having a first flash code lamp and a second flash code lamp, the apparatus comprising:

a plurality of sensors, each sensor configured to sense operating data from one of the components of the HVAC/R system;

a first computer located on or near the HVAC/R system configured to store the pre-programmed operating parameters for the components and operable to receive the operating data from the sensors and to generate error messages when the operating data is outside the pre-programmed operating parameters;

a second computer located remotely from the HVAC/R system and operable to communicate with the first computer to receive and store the operating data and the error messages generated by the first computer; and

a communications system configured to facilitate communications between the first computer and the second computer.

13. The apparatus of claim 12, wherein the plurality of sensors are selected from the group consisting of a first temperature sensor positioned proximate the supply air duct, a second temperature sensor positioned proximate the return air duct, a third temperature sensor positioned to sense the temperature of the environment outside the facility, a fourth temperature sensor positioned to sense the A/C fluid line temperature, a fifth temperature sensor positioned to sense the A/C suction line temperature, a sixth temperature sensor positioned to sense the fan motor temperature, a first pressure sensor positioned to sense the pressure differential across the air filter, a first liquid sensor positioned to detect the presence of liquid in the evaporator pan, a second liquid sensor positioned to detect liquid between the evaporator pan and the floor drain, a humidity sensor positioned to sense the humidity of the air at the return air duct, a first optical sensor positioned to sense the operation of the UV lamp, a second optical sensor positioned to sense operation of the first flash code lamp, and a third optical sensor positioned to sense operation of the second flash code lamp.

14. The apparatus of claim 12, wherein the control unit controls and monitors the operation of at least the furnace, the interior A/C unit, the outside A/C unit, and the blower.

15. The apparatus of claim 12, wherein the control unit is operable to generate flash codes via the first flash code lamp and the second flash code lamp, the first flash code lamp operable to provide operating data in the form of a visual indication of the operation of the furnace, the interior A/C unit, and the blower, the second flash code lamp operable to provide operating data in the form of a visual indication of the operation of the outside A/C unit.

16. The apparatus of claim 15, the monitoring apparatus further including a first holder and a second holder, the first holder configured to locate the second optical sensor adjacent the first flash code lamp, the second holder configured to locate the third optical sensor adjacent the second flash code lamp.

17. The apparatus of claim 16, wherein each holder includes an elongate tubular housing operable to mount an optical sensor therein, each holder defined by a sidewall, a rear wall having an aperture, and an open end opposite the rear wall, the rear wall configured to secure the optical sensor within the holder and facing the flash code lamp, the aperture configured to allow passage of wires connecting the optical sensor to the first computer, the open end configured to fit securely over a flash code lamp.

18. The apparatus of claim 17, wherein the sidewall includes at least one lengthwise slot, the at least one lengthwise slot operable to facilitate expansion of the open end for secure attachment of the elongate tubular housing over the flash code lamp.

19. The apparatus of claim 12, wherein the plurality of sensors includes a first optical sensor positioned to sense the operation of the UV lamp, a second optical sensor positioned to sense operation of the first flash code lamp, and a third optical sensor positioned to sense operation of the second flash code lamp, the apparatus further including a first and a second flash code reader, each flash code reader having a housing that can be placed over one of the flash code lamps of the control unit.

20. The apparatus of claim 19, wherein the second optical sensor is mounted in the housing of the first flash code reader to detect flash codes from the first flash code lamp, and the third optical sensor is mounted in the housing of the second flash code reader to detect flash codes from the second flash code lamp.

21. The apparatus of claim 12, wherein the plurality of sensors includes a first liquid sensor, the apparatus further including a housing for adjustably mounting the first liquid sensor to a sidewall of the evaporator pan, the first liquid sensor being contained within the housing and positioned to detect the presence of liquid in the evaporator pan.

22. The apparatus of claim 21, the housing including a base section having a side edge, a bottom cover, and a brace extending downwardly from the side edge of the base section and spaced from the bottom cover such that the housing is operable to be mounted over the sidewall of the evaporator pan with the brace and sensor disposed on opposite sides of the sidewall, the housing secured to the sidewall of the evaporator pan by a pair of clamp arms disposed on opposite longitudinal ends of the base section and threadably secured to the housing by fasteners installed through bosses extending from the respective longitudinal ends of the base section.

23. The apparatus of claim 22, wherein the first liquid sensor is actuated when the level of liquid in the evaporator pan rises to contact a pair of sensing probes extending through apertures in the bottom cover and into the pan.

24. The apparatus of claim 23, wherein the housing further includes indicia formed on the brace to indicate the level at which the liquid will actuate the sensor.

25. A method for monitoring operating data generated by components of a heating, ventilation, air conditioning and/or refrigeration (HVAC/R) system of a facility, the method comprising:

configuring the HVAC/R system components to operate within pre-programmed operating parameters;

sensing operating data generated by the components with a plurality of sensors configured to sense operating data from the components of the HVAC/R system;

communicating the operating data from the sensors to a first computer;

communicating the operating data from the first computer to a second computer;

generating and then communicating error messages if the operating data is outside the pre-programmed operating parameters;

storing the operating data and error messages in the second computer;

allowing access of the operating data and the error messages by a user; and

sending an alert to the user through at least one peripheral device when an error message is generated.

26. The method of claim 25, wherein the components of the HVAC/R system include at least one of a furnace, an interior air conditioner (A/C) unit, an outside A/C unit, a fan motor, a blower, a supply air duct, a return air duct, an A/C suction line, an A/C fluid line, an air filter, an evaporator, an evaporator pan, a floor drain, a thermostat, a UV lamp, and a control unit having a first flash code lamp and a second flash code lamp.

27. The method of claim 26, wherein the plurality of sensors are selected from the group consisting of a first temperature sensor positioned proximate the supply air duct, a second temperature sensor positioned proximate the return air duct, a third temperature sensor positioned to sense the temperature of the environment outside the facility, a fourth temperature sensor positioned to sense the A/C fluid line temperature, a fifth temperature sensor positioned to sense the A/C suction line temperature, a sixth temperature sensor positioned to sense the fan motor temperature, a first pressure sensor positioned to sense the pressure differential across the air filter, a first liquid sensor positioned to detect the presence of liquid in the evaporator pan, a second liquid sensor positioned to detect liquid between the evaporator pan and the floor drain, a humidity sensor positioned to sense the humidity of the air at the return air duct, a first optical sensor positioned to sense the operation of the UV lamp, a second optical sensor positioned to sense operation of the first flash code lamp, and a third optical sensor positioned to sense operation of the second flash code lamp.

28. The method of claim 26, further comprising generating flash codes via the first flash code lamp and the second flash code lamp, the flash codes from the first flash code lamp providing operating data in the form of a visual indication of the operation of the furnace, the interior A/C unit and the blower, and the second flash code lamp providing operating data in the form of a visual indication of the operation of the outside A/C unit.

29. The method of claim 27, the components of the HVAC/R system further including a first and a second flash code reader, each flash code reader having a housing that can be placed over one of the flash code lamps of the control unit.

30. The method of claim 29, wherein the second optical sensor is mounted in the housing of the first flash code reader to detect flash codes from the first flash code lamp, and the third optical sensor is mounted in the housing of the second flash code reader to detect flash codes from the second flash code lamp.