Dynamic building air balancing using barometric pressure
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G06F-019/00
F24F-011/00
G05D-016/20
출원번호
US-0418973
(2012-03-13)
등록번호
US-9335062
(2016-05-10)
발명자
/ 주소
Goodfellow, John A.
출원인 / 주소
Toyota Motor Engineering & Manufacturing North America, Inc.
대리인 / 주소
Oblon, McClelland, Maier & Neustadt, L.L.P.
인용정보
피인용 횟수 :
1인용 특허 :
10
초록▼
A controller for dynamically balancing air pressure in a building including at least a first room, includes a receiver, a processor, and a transmitter. The receiver is configured to receive an outdoor air pressure measured by an outdoor pressure sensor, and to receive a room air pressure measured by
A controller for dynamically balancing air pressure in a building including at least a first room, includes a receiver, a processor, and a transmitter. The receiver is configured to receive an outdoor air pressure measured by an outdoor pressure sensor, and to receive a room air pressure measured by a room pressure sensor. The processor is configured to calculate a pressure set point based on the outdoor air pressure, to determine whether the room air pressure deviates from the pressure set point by a predefined threshold, and to generate instructions for a heating ventilation and air conditioning (HVAC) unit to adjust the room air pressure to the first pressure set point. The transmitter is configured to transmit the instructions to the HVAC unit. A system and a process for dynamically balancing air pressure in a building including at least a first room are also provided.
대표청구항▼
1. A controller for dynamically balancing air pressure in a building that includes at least a first room, comprising: a receiver configured to receive an outdoor air pressure measured by an outdoor pressure sensor outside of the building, and to receive a first room air pressure measured by a room p
1. A controller for dynamically balancing air pressure in a building that includes at least a first room, comprising: a receiver configured to receive an outdoor air pressure measured by an outdoor pressure sensor outside of the building, and to receive a first room air pressure measured by a room pressure sensor inside the first room;a processor configured to calculate a first pressure set point for the first room based on the outdoor air pressure, to determine whether the first room air pressure deviates from the first pressure set point by a predefined threshold, and to generate instructions for a first heating ventilation and air conditioning (HVAC) unit of the first room to adjust the first room air pressure to the first pressure set point; anda transmitter configured to transmit the instructions to the first HVAC unit, whereinthe processor is configured to determine whether a supply fan of the first HVAC unit and an exhaust fan of the first HVAC unit are at full capacity, and to: determine that the first room air pressure is below the first pressure set point by the predefined threshold, and to generate instructions which increase a fan speed of the supply fan to increase a rate of air supplied to the first room when the supply fan is not at full capacity, and which reduce a fan speed of the exhaust fan to reduce a rate of air exhausted from the first room when the supply fan is at full capacity, ordetermine that the first room air pressure is above the first pressure set point by the predefined threshold, and to generate instructions which reduce the fan speed of the supply fan to reduce the rate of air supplied to the first room when the exhaust fan is at full capacity, and which increase the fan speed of the exhaust fan to increase the rate of air exhausted from the first room when the exhaust fan is not at full capacity. 2. The controller according to claim 1, wherein: the building includes a second room, the second room including a second HVAC unit and a room pressure sensor to measure a second room air pressure inside the second room,the receiver is configured to receive the second room air pressure measured by the room air pressure sensor of the second room,the processor is configured to calculate the first pressure set point and a second pressure set point for the second room based on the measured outdoor and first and second room air pressures, to determine whether the first and second room air pressures deviate from the respective first and second pressure set points by the predefined threshold, and to generate instructions for the first and second HVAC units to adjust the first and second room air pressures to the respective first and second pressure set points and to maintain a predefined pressure differential between the first and second rooms, andthe transmitter is configured to transmit the instructions to the first and second HVAC units. 3. The controller according to claim 2, wherein: the processor is configured to generate the instructions for the HVAC units to maintain the predefined pressure differential between the first and second rooms to conserve power usage by generating instructions which reduce fan speeds of the HVAC units proportionally between the first and second rooms. 4. The controller according to claim 3, wherein: the processor is configured to calculate the first and second pressure set points to maintain a predefined pressure differential between the first room and the outdoor air pressure and a predefined pressure differential between the second room and the outdoor air pressure, the first and second pressure set points being higher than the outdoor air pressure. 5. The controller according to claim 4, wherein: at least one of the first and second rooms includes two zones, the two zones being separated from but not pressure sealed from one another, the HVAC unit and room pressure sensor for the one of the first and second rooms including a respective zone HVAC unit and a zone pressure sensor for each of the two zones,the receiver is configured to receive first and second zone air pressures from the zone pressure sensors,the processor is configured to calculate first and second zone pressure set points for the two zones based on the measured outdoor and first and second zone air pressures, to determine whether the first and second zone air pressures deviate from the respective first and second zone pressure set points by the predefined threshold, and to generate instructions for the first and second zone HVAC units to adjust the first and second zone air pressures to the respective first and second zone pressure set points, andthe transmitter is configured to transmit the instructions to the first and second zone HVAC units. 6. The controller according to claim 1, wherein: the receiver is configured to receive a signal from the first HVAC unit indicating the fan speed of the supply fan of the first HVAC unit and of the exhaust fan of the first HVAC unit. 7. The controller according to claim 6, wherein: the processor is configured to determine that the first room air pressure is below the first pressure set point by the predefined threshold, and to generate instructions which increase the fan speed of the supply fan to increase a rate of fresh air supplied to the first room when the supply fan is not at full capacity, and which to reduce the fan speed of the exhaust fan to reduce a rate of exhaust air exhausted from the first room when the supply fan is at full capacity, andthe processor is configured to determine that the first room air pressure is above the first pressure set point by the predefined threshold, and to generate instructions which reduce the fan speed of the supply fan to reduce the rate of fresh air supplied to the first room when the exhaust fan is at full capacity, and which increase the fan speed of the exhaust fan to increase the rate of exhaust air exhausted from the first room when the exhaust fan is not at full capacity. 8. The controller according to claim 7, wherein: the first HVAC unit includes a supply fan drive and an exhaust fan drive, andthe transmitter is configured to transmit the instructions to increase or reduce the fan speed of the supply fan to the supply fan drive, and to transmit the instructions to increase or reduce the fan speed of the exhaust fan to the exhaust fan drive. 9. The controller according to claim 1, wherein: the building includes at least four rooms, the four rooms including a weld shop, a press shop, an assembly shop, and a paint shop, andthe processor is configured to calculate a pressure set point for each of the weld shop, the press shop, the assembly shop, and the paint shop so that the calculated pressure set point increases from shop to shop in this listed order. 10. The controller according to claim 1, wherein: the processor is configured to generate the instructions to correct for a real-time change in the first room air pressure, the real-time change being detected by the room pressure sensor inside the first room from at least one of events including adjustment of a ratio of fresh air to return air supplied to the first room, adjustment of a rate of exhaust air exhausted from the first room, opening and closing of an area opening to the first room, clogging of an air filter of the first HVAC unit, and temperature change in the first room. 11. The controller according to claim 1, wherein the processor is configured to calculate the first pressure set point using only the outdoor air pressure measured by the outdoor pressure sensor and a predefined pressure differential between the first room and the outdoor air. 12. A system for dynamically balancing air pressure in a building that includes a first room, comprising: an outdoor pressure sensor that measures an outdoor air pressure outside of the building;a room pressure sensor that measures a first room air pressure inside the first room;a first heating ventilation and air conditioning (HVAC) unit of the first room; anda first controller including a first receiver, a first processor, and a first transmitter,the first receiver being configured to receive the outdoor air pressure measured by the outdoor pressure sensor and the first room air pressure measured by the room pressure sensor,the first processor being configured to calculate a first pressure set point for the first room based on the outdoor air pressure, to determine whether the first room air pressure deviates from the first pressure set point by a predefined threshold, and to generate instructions for the first HVAC unit to adjust the first room air pressure to the first pressure set point, andthe first transmitter being configured to transmit the instructions to the first HVAC unit, whereinthe first processor is configured to determine whether a supply fan of the first HVAC unit and an exhaust fan of the first HVAC unit are at full capacity, and to: determine that the first room air pressure is below the first pressure set point by the predefined threshold, and to generate instructions which increase a fan speed of the supply fan to increase a rate of air supplied to the first room when the supply fan is not at full capacity, and which reduce a fan speed of the exhaust fan to reduce a rate of air exhausted from the first room when the supply fan is at full capacity, ordetermine that the first room air pressure is above the first pressure set point by the predefined threshold, and to generate instructions which reduce the fan speed of the supply fan to reduce the rate of air supplied to the first room when the exhaust fan is at full capacity, and which increase the fan speed of the exhaust fan to increase the rate of air exhausted from the first room when the exhaust fan is not at full capacity. 13. The system according to claim 12, wherein: the first HVAC unit includes a supply variable frequency drive controlling the supply fan, and an exhaust variable frequency drive controlling the exhaust fan. 14. The system according to claim 13, further comprising: a second controller including a second receiver, a second processor, and a second transmitter,the second receiver being configured to receive the first room air pressure measured by the room pressure sensor,the second transmitter being configured to transmit the first room air pressure to the first receiver,the second receiver being configured to receive the first pressure set point calculated by the first processor,the second processor being configured to determine whether the first room air pressure deviates from the first pressure set point by the predefined threshold, and to generate instructions for the supply and the exhaust variable frequency drives to adjust the first room air pressure to the first pressure set point, andthe second transmitter being configured to transmit the instructions for the supply and the exhaust variable frequency drives to the first HVAC unit. 15. The system according to claim 12, wherein the first processor is configured to calculate the first pressure set point using only the outdoor air pressure measured by the outdoor pressure sensor and a predefined pressure differential between the first room and the outdoor air. 16. A process for dynamically balancing air pressure in a building by a controller, the building including a first room, a first heating ventilation and air conditioning (HVAC) unit for the first room, a room pressure sensor for the first room and an outdoor pressure sensor, the process comprising: receiving an outdoor air pressure measured by the outdoor pressure sensor;receiving a first room air pressure measured by the room pressure sensor;calculating a first pressure set point for the first room based on the received outdoor air pressure with the controller;determining whether the first room air pressure deviates from the first pressure set point by a predefined threshold with the controller;generating instructions for the first HVAC unit to adjust the first room air pressure to the first pressure set point with the controller;transmitting the instructions to the first HVAC unit; andwith the controller, determining whether a supply fan of the first HVAC unit and an exhaust fan of the first HVAC unit are at full capacity, and: determining that the first room air pressure is below the first pressure set point by the predefined threshold, and generating instructions which increase a fan speed of the supply fan to increase a rate of air supplied to the first room when the supply fan is not at full capacity, and which reduce a fan speed of the exhaust fan to reduce a rate of air exhausted from the first room when the supply fan is at full capacity, ordetermining that the first room air pressure is above the first pressure set point by the predefined threshold, and generating instructions which reduce the fan speed of the supply fan to reduce the rate of air supplied to the first room when the exhaust fan is at full capacity, and which increase the fan speed of the exhaust fan to increase the rate of air exhausted from the first room when the exhaust fan is not at full capacity. 17. The process according to claim 16, wherein the calculating includes calculating the first pressure set point using only the outdoor air pressure measured by the outdoor pressure sensor and a predefined pressure differential between the first room and the outdoor air.
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이 특허에 인용된 특허 (10)
Cler Lawrence J. (Broomfield CO), Adaptive environment control system.
Sloo, David; Le Guen, Sophie Solveig; Veron, Maxime; Guenette, Isabel, Devices and methods for setting the configuration of a smart home controller based on air pressure data.
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