# US 9,519,295 B2 · Heating, ventilation, and air conditioning management system and method

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 9,519,295 B2
- Document ID: US9519295B2
- Status: Granted
- Kind: B2
- Application number: 13/902,262
- Filed: 2013-05-24
- Published: 2013-10-03
- Granted: 2016-12-13
- Earliest claimed: 2011-09-27
- Assignees: JPMorgan Chase Bank, N.A.
- Applicants: JPMorgan Chase Bank, N.A.
- Inventors: Benjamin Trent Burton
- Web page: https://patentgrep.com/patent/US9519295B2

## CPC

- F24F 11/77: by controlling the speed of ventilators
- F24F 11/30: for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F 11/46: Improving electric energy efficiency or saving
- F24F 11/58: using Internet communication
- F24F 11/64: using pre-stored data
- F24F 11/80: for controlling the temperature of the supplied air
- F24F 11/83: by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F 11/84: using valves
- G05B 15/02: electric
- G05D 23/1917: {using digital means}
- G05D 23/1931: {to control the temperature of one space}
- F24F 11/50: characterised by user interfaces or communication
- F24F 11/54: using one central controller connected to several sub-controllers
- F24F 11/63: Electronic processing
- F24F 11/75: for maintaining constant air flow rate or air velocity
- F24F 11/79: for controlling the direction of the supplied air
- F24F 2110/10: Temperature
- F24F 2110/12: of the outside air
- Y02B 30/70: Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
- F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02)
- G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G)
- G05D: SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS

## Abstract

Systems and methods of controlling a heating, ventilating, and air conditioning system are provided that operate according to signals returned from return air temperature sensors as well as the supply air temperature sensors. Using predetermined temperature setpoints, return temperature information, and supply temperature information, the HVAC system is configured to maintain the temperature of a room first, by the use of its cooling valve, and second and only when the capacity of the cooling valve has peaked, by use of the fan. The presently disclosed improved HVAC system operates more efficiently by avoiding unit loading hopping and minimizing power consumption.

## Claims

### Claim 1

A method for configuring a heating, ventilation, and air conditioning (HVAC) system, the system including at least one HVAC unit, each unit including at least one control circuit, the method comprising:
receiving a return air temperature signal at a control circuit of the at least one HVAC unit;
receiving a supply air temperature signal at the control circuit of the at least one HVAC unit;
controlling a water cooling valve of the at least one HVAC unit based at least on the received return air temperature signal, the received supply air temperature signal, a return setpoint temperature, a supply setpoint temperature, and the cooling valve opening rate; and
controlling a fan according to at least a fan ramping rate.

### Claim 2 (depends on 1)

The method of claim 1, further comprising:
generating a cooling valve drive signal according to at least one of return air temperature signal and supply air temperature signal.

### Claim 3 (depends on 1)

The method of claim 1, comprising:
generating a first cooling valve drive signal based on a comparing of the return temperature signal and a return setpoint temperature;
generating a second cooling valve drive signal based on a comparing of the supply temperature signal and a supply setpoint temperature.

### Claim 4

A method for configuring a heating, ventilation, and air conditioning (HVAC) system, the system including at least one HVAC unit, each unit including at least one control circuit, the method comprising:
receiving a return air temperature signal at a control circuit of the at least one HVAC unit;
receiving a supply air temperature signal at the control circuit of the at least one HVAC unit;
generating a first cooling valve drive signal based on a comparing of the return temperature signal and a return setpoint temperature;
generating a second cooling valve drive signal based on a comparing of the supply temperature signal and a supply setpoint temperature;
controlling a fan and a cooling valve of the at least one HVAC unit based at least on the received return air temperature signal, the received supply air temperature signal, a return setpoint temperature, and a supply setpoint temperature;
wherein the controlling of the cooling valve is based on a comparison of a priority associated with the first cooling valve drive signal and a priority associated with the second cooling valve drive signal.

### Claim 5 (depends on 1)

The method of claim 1, wherein the controlling step further comprises:
controlling a fan to operate at a minimum speed based on a capacity of the cooling valve.

### Claim 6 (depends on 1)

The method of claim 1, wherein the controlling step further comprises:
controlling a fan to operate above a minimum speed based on the cooling valve operating at a maximum capacity.

### Claim 7 (depends on 1)

The method of claim 1, wherein the controlling step further comprises controlling the cooling valve to operate at a minimum capacity based on comparing the return air temperature signal with a cooling valve setpoint temperature.

### Claim 8 (depends on 1)

The method of claim 1, wherein the HVAC system is configured to control the temperature of one or more computer systems.

### Claim 9

A method for configuring a heating, ventilation, and air conditioning (HVAC) system, the system including at least one HVAC unit, each unit including at least one control circuit, the method comprising:
receiving a return air temperature signal at a control circuit of the at least one HVAC unit;
receiving a supply air temperature signal at the control circuit of the at least one HVAC unit;
controlling a water cooling valve of the at least one HVAC unit based at least on the received return air temperature signal, the received supply air temperature signal, a return setpoint temperature, a supply setpoint temperature; and at least one of humidity and air pressure of the environment at least partially monitored by the at least one HVAC unit.

### Claim 10

A heating, ventilation, and air conditioning (HVAC) system, the system comprising:
at least one HVAC unit, each HVAC unit including:
at least one fan;
at least one water cooling valve;
a processor, said processor coupled to the at least one fan and the at least one cooling valve, said processor is adapted to execute instructions to perform the following:
receiving a return air temperature signal;
receiving a supply air temperature signal;
controlling the at least one water cooling valve based at least on the received return air temperature signal, the received supply air temperature signal, a return setpoint temperature, a supply setpoint temperature, and the cooling valve opening rate; and
controlling a fan according to at least a fan ramping rate.

### Claim 11 (depends on 10)

The system of claim 10, said processor is further adapted to execute instructions to generate a cooling valve drive signal according to at least one of return air temperature signal and supply air temperature signal.

### Claim 12 (depends on 10)

The system of claim 10, said processor is further adapted to execute instructions to perform the following:
generating a first cooling valve drive signal based on a comparing of the return temperature signal and a return setpoint temperature;
generating a second cooling valve drive signal based on a comparing of the supply temperature signal and a supply setpoint temperature.

### Claim 13

A heating, ventilation, and air conditioning (HVAC) system, the system comprising:
at least one HVAC unit, each HVAC unit including:
at least one fan;
at least one cooling valve;
a processor, said processor coupled to the at least one fan and the at least one cooling valve, said processor is adapted to execute instructions to perform the following:
receiving a return air temperature signal;
receiving a supply air temperature signal;
generating a first cooling valve drive signal based on a comparing of the return temperature signal and a return setpoint temperature;
generating a second cooling valve drive signal based on a comparing of the supply temperature signal and a supply setpoint temperature;
controlling the at least one fan and the at least one cooling valve based at least on the received return air temperature signal, the received supply air temperature signal, a return setpoint temperature, and a supply setpoint temperature;
wherein the controlling of the at least one cooling valve is based on a comparison of a priority associated with the first cooling valve drive signal and a priority associated with the second cooling valve drive signal.

### Claim 14 (depends on 10)

The system of claim 10, wherein the processor's controlling of the at least one cooling valve further comprises:
controlling a fan to operate at a minimum speed based on a capacity of the cooling valve.

### Claim 15 (depends on 10)

The system of claim 10, wherein the processor's controlling of the at least one cooling valve further comprises controlling a fan to operate above a minimum speed based on the cooling valve operating at a maximum capacity.

### Claim 16 (depends on 10)

The system of claim 10, wherein the processor's controlling of the at least one cooling valve further comprises controlling a cooling valve to operate at a minimum capacity based on comparing the return air temperature signal with a cooling valve setpoint temperature.

### Claim 17 (depends on 10)

The system of claim 10, wherein the HVAC system is configured to control the temperature of one or more computer systems.

### Claim 18

A heating, ventilation, and air conditioning (HVAC) system, the system comprising:
at least one HVAC unit, each HVAC unit including:
at least one fan;
at least one water cooling valve;
a processor, said processor coupled to the at least one fan and the at least one cooling valve, said processor is adapted to execute instructions to perform the following:
receiving a return air temperature signal;
receiving a supply air temperature signal;
controlling the at least one water cooling valve based at least on the received return air temperature signal, the received supply air temperature signal;
a return setpoint temperature, a supply setpoint temperature;
wherein the processor's controlling of the at least one water cooling valve is based on at least one of humidity and air pressure of the environment at least partially monitored by the at least one HVAC unit.