Automatic calibration of a demand control ventilation system
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G05D-023/19
G05D-007/06
F24F-007/00
F24F-011/00
F24F-003/044
출원번호
US-0764415
(2010-04-21)
등록번호
US-9500382
(2016-11-22)
발명자
/ 주소
Grabinger, Cory
Wacker, Paul
Kreft, Todd
McMillan, Scott
Thomle, Adrienne
출원인 / 주소
Honeywell International Inc.
대리인 / 주소
Seager, Tufte & Wickhem, LLP
인용정보
피인용 횟수 :
1인용 특허 :
121
초록▼
Methods and systems for automatically calibrating one or more damper positions of a demand control ventilation system are disclosed. In one illustrative embodiment, a demand control ventilation system includes a damper for controlling a flow of outside air into a building. A controller may be progra
Methods and systems for automatically calibrating one or more damper positions of a demand control ventilation system are disclosed. In one illustrative embodiment, a demand control ventilation system includes a damper for controlling a flow of outside air into a building. A controller may be programmed to automatically execute a calibration algorithm from time to time to calibrate one or more calibration damper positions such that a predetermined flow of outside air is drawn through the damper and into the building at each of the one or more calibration damper positions. This calibration can, in some instances, help increase the efficiency and/or utility of the demand control ventilation system.
대표청구항▼
1. A Demand Control Ventilation (DCV) system for a building, comprising: a first temperature sensor positioned to sense an outside air temperature;a second temperature sensor positioned to sense a return air temperature;one or more dampers, each of the one or more dampers for controlling a flow of a
1. A Demand Control Ventilation (DCV) system for a building, comprising: a first temperature sensor positioned to sense an outside air temperature;a second temperature sensor positioned to sense a return air temperature;one or more dampers, each of the one or more dampers for controlling a flow of air into or out of the building;a controller, the controller configured to control a position of the one or more dampers;wherein the controller is further configured to automatically determine one or more calibrated damper position settings at which a flow rate of outside air drawn through the damper and into the building matches a corresponding predetermined ventilation setting, the controller using one or more flow rates that are based on measurements of one or more sensors to determine the one or more calibrated damper position settings, the controller automatically determining from time to time the one or more calibrated damper position settings when one or more predetermined environmental conditions are detected;wherein the controller is programmed to use the one or more calibrated damper position settings to achieve a desired ventilation rate; andwherein the one or more predetermined environmental conditions comprise at least a predetermined temperature differential between the return air temperature and the outside air temperature. 2. The Demand Control Ventilation (DCV) system of claim 1, wherein during automatic calibration, the controller is configured to adjust the one or more dampers such that a predetermined flow of outside air is drawn through the damper and into the building at each of one or more calibration damper positions. 3. The Demand Control Ventilation (DCV) system of claim 1, wherein the one or more sensors comprise one or more of the first temperature sensor and the second temperature sensor. 4. A Demand Control Ventilation (DCV) system for a building, comprising: a first temperature sensor positioned to sense an outside air temperature;a second temperature sensor positioned to sense a return air temperature;one or more dampers, each of the one or more dampers for controlling a flow of air into or out of the building;a controller, the controller configured to control a position of the one or more dampers;wherein the controller is further configured to automatically determine one or more calibrated damper position settings, the controller using one or more flow rates that are based on measurements of one or more sensors to determine the one or more calibrated damper position settings, the controller automatically determining from time to time the one or more calibrated damper position settings when one or more predetermined environmental conditions are detected, wherein the one or more predetermined environmental conditions comprise at least a predetermined temperature differential between the return air temperature and the outside air temperature; andwherein the controller is programmed to use the one or more calibrated damper position settings to achieve a desired ventilation rate. 5. The Demand Control Ventilation (DCV) system of claim 4, wherein during automatic calibration, the controller is configured to adjust the one or more dampers such that a predetermined flow of outside air is drawn through the damper and into the building at each of the one or more calibrated damper position settings. 6. The Demand Control Ventilation (DCV) system of claim 4, wherein the controller is programmed with desired environmental conditions for calibration, and wherein the controller is configured to determine if current environmental conditions are closer to the desired environmental conditions than during a previous calibration, and if so, automatically determine one or more calibrated damper position settings. 7. The Demand Control Ventilation (DCV) system of claim 4, wherein the controller is configured to allow a user to initiate calibration of the one or more calibrated damper position settings. 8. The Demand Control Ventilation (DCV) system of claim 4, wherein the controller is configured to allow a user to input one or more calibration parameters to be used in determining the one or more calibrated damper position settings. 9. A Demand Control Ventilation (DCV) system for a building, comprising: one or more dampers, each of the one or more dampers for controlling a flow of air into or out of the building;a controller, the controller configured to control a position of the one or more dampers;wherein the controller is further configured to automatically determine one or more calibrated damper position settings, the controller using one or more flow rates that are detected using one or more sensors to determine the one or more calibrated damper position settings, the controller automatically determining from time to time the one or more calibrated damper position settings when one or more predetermined environmental conditions are detected, wherein the one or more predetermined environmental conditions comprise at least a predetermined temperature differential between an inside air temperature inside of the building and an outside air temperature;wherein the controller is programmed to use the one or more calibrated damper position settings to achieve a desired ventilation rate;wherein the controller automatically enters a calibration mode from a normal operation mode from time to time and executes a calibration algorithm to determine the one or more calibrated damper position settings;wherein the controller is programmed with settings indicative of desired environmental conditions for the calibration mode; andwherein the controller is configured to monitor environmental conditions, and when current environmental conditions are closer to the desired environmental conditions than during a previous calibration, the controller runs the calibration algorithm. 10. The Demand Control Ventilation (DCV) system of claim 9, wherein during automatic calibration, the controller is configured to adjust the one or more dampers such that a predetermined flow of outside air is drawn through the damper and into the building at each of one or more calibrated damper positions. 11. The Demand Control Ventilation (DCV) system of claim 9, wherein the one or more sensors comprise one or more temperature sensors. 12. The Demand Control Ventilation (DCV) system of claim 9, wherein the controller is configured to allow a user to initiate calibration of the one or more calibrated damper position settings. 13. The Demand Control Ventilation (DCV) system of claim 9, wherein the controller is configured to allow a user to input one or more calibration parameters to be used in determining the one or more calibrated damper position settings.
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