최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0251978 (2016-08-30) |
등록번호 | US-9500386 (2016-11-22) |
발명자 / 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 | 피인용 횟수 : 4 인용 특허 : 3 |
Apparatus and methods are disclosed for a fan controller. The fan controller determines HVAC system type and heating or cooling mode for gas furnace, heat pump, electric resistance, and hydronic heating, ventilating, and air conditioning (HVAC) systems. For gas furnace heating systems, the apparatus
Apparatus and methods are disclosed for a fan controller. The fan controller determines HVAC system type and heating or cooling mode for gas furnace, heat pump, electric resistance, and hydronic heating, ventilating, and air conditioning (HVAC) systems. For gas furnace heating systems, the apparatus and methods include energizing the blower fan from a lower fan speed used for heating by the furnace-fan controller to the high-speed used for cooling by the fan controller after fan-on delay time P1 to increase delivered heating capacity, satisfy the thermostat sooner and save heating energy. For heat pump, electric resistance, and hydronic heating systems the apparatus and methods include energizing the fan relay after a short fan-on delay time P0 based on previous off-cycle duration P11. For all these HVAC systems, the apparatus and methods vary extended fan-off time delay P2 as a function of cool-source operational time P4 or heat-source operational time P3.
1. A fan controller (211) for a Heating Ventilation and Air Conditioning (HVAC) system (100) including a direct-expansion air conditioner and at least one of a gas furnace, a Heat Pump (HP), an electric heating element, and a hydronic heating element, the fan controller comprising: electrical inputs
1. A fan controller (211) for a Heating Ventilation and Air Conditioning (HVAC) system (100) including a direct-expansion air conditioner and at least one of a gas furnace, a Heat Pump (HP), an electric heating element, and a hydronic heating element, the fan controller comprising: electrical inputs configured to receive electrical signals from an HVAC thermostat or equipment control terminals (201), the electrical inputs comprising at least one of: 1) a fan controller fan signal input (214) configured to detect at least one of: a presence of a low-voltage fan signal on a thermostat “G” terminal (204) to allow measurement of a cool-source operational time P4 or heat-source operational time P3 in order to calculate a fan-off time delay P2; andan absence of a low-voltage fan signal on a thermostat “G” terminal (204) to allow measurement of an off-cycle time P11;2) a fan controller heat source or HP reversing valve signal input (216), configured to detect at least one of: a presence of a low-voltage heat source signal on a thermostat “W” terminal (208) to allow measurement of a heat-source operational time P3 in order to calculate the fan-off time delay P2;an absence of a low-voltage fan signal on a thermostat “W” terminal (208) to allow measurement of the off-cycle time P11; anda presence or absence of a low-voltage HP reversing valve signal on a thermostat “O” terminal (235) or thermostat “BR” terminal (236);3) a fan controller AC or HP (AC/HP) compressor signal input (215) configured to detect at least one of: a presence of a low-voltage AC/HP compressor signal on a thermostat “Y” terminal (207) to allow measurement of the cool-source operational time P4 or the heat-source operational time P3 in order to calculate the fan-off time delay P2; andan absence of a low-voltage fan signal on a thermostat “Y” terminal (207) to allow measurement of the off-cycle time P11; and4) a fan controller HP Detection (HPD) signal input (234) configured to detect a presence or absence of a low-voltage signal from a system transformer 24 VAC Hot leg (210b) connected to the fan controller HPD signal input (234) through one of: a diode (275) to receive a rectified signal; anda wire (265) to receive an unrectified signal;to indicate whether or not the fan controller is connected to a HP and type of HP reversing valve;a microprocessor (304);a switching device (301) electrically connected to the microprocessor (304) to receive a control signal from the microprocessor (304);a low-voltage DC power source electrically connected to the microprocessor (304), the DC power source selected from at least one of: a low-voltage battery (306);an AC-DC converter (303); anda super capacitor (312); anda fan controller fan relay signal output (212) from the switching device (301) configured to electrically connect to a fan relay (205) to provide a low-voltage fan relay signal to control the fan relay (205). 2. The fan controller of claim 1, wherein the electrical inputs include at least one of: the fan controller fan signal input (214) from the low-voltage fan signal on the thermostat “G” terminal (204);the fan controller AC/HP compressor signal input (215) from the low-voltage AC/HP compressor signal on the thermostat “Y” terminal (207); andthe fan controller heat source or HP reversing valve signal input (216) from at least one of: 1) the low-voltage heat source signal on the thermostat “W” terminal (208);2) the low-voltage HP reversing valve signal on a thermostat “O” terminal (235); and3) the HP low-voltage reversing valve signal on the thermostat “BR” terminal (236). 3. The fan controller of claim 1, wherein: the low-voltage fan signal on the thermostat “G” terminal (204) is used as a proxy for at least one of: the cool-source operational time P4; andthe heat-source operational time P3; andthe low-voltage AC/HP compressor signal on the thermostat “Y” terminal (207) is used as a proxy for at least one of: the cool-source operational time P4; andthe heat-source operational time P3; andthe low-voltage heat signal on the thermostat “W” terminal (208) is used as a proxy for the heat-source operational time P3. 4. The fan controller of claim 1, wherein the electrical inputs further include one of: the fan controller HPD signal input (234) configured to detect an absence of a signal or to receive the 24 VAC Hot signal on the thermostat “R” terminal (209); andthe system transformer 24 VAC Hot signal leg (210b) electrically connected and unrectified through the wire (265) or rectified through the diode (275) to the fan controller HPD signal input (234). 5. The fan controller of claim 1, wherein the DC power source comprises the AC-DC converter (303). 6. The fan controller of claim 5, wherein the AC-DC converter (303) is configured to receive current through at least one of: 1) the fan relay (205); and2) a low-voltage AC power source input (221) from the system transformer (210). 7. The fan controller of claim 1, wherein the DC power signal comprises at least one of: the low-voltage battery (306); andthe super capacitor (312). 8. The fan controller of claim 1, wherein the fan controller includes at least one of: a user interface (305) configured for a user to select an HVAC system type for the microprocessor (304) to determine heating or cooling mode based on signals present on the HVAC thermostat or equipment control terminals (201); andthe microprocessor (304) configured to determine the HVAC system type and heating or cooling mode based on signals present on the HVAC thermostat or equipment control terminals (201) and the state of the fan controller HPD signal input (234). 9. The fan controller of claim 1, wherein the microprocessor (304) is configured to determine HVAC system type and cooling or heating mode based on signals present on the HVAC thermostat or equipment control terminals (201), for at least one HVAC system type including: 1) a gas furnace, hydronic or electric resistance HVAC system type in cooling mode;2) a HP HVAC system type in cooling mode;3) a gas furnace HVAC system type in heating mode;4) a hydronic or electric HVAC system type in heating mode; and5) a HP heating HVAC system type in heating mode. 10. The fan controller of claim 1, wherein the microprocessor (304) is configured to determine the gas furnace, hydronic or electric resistance HVAC system type in cooling mode based on at least one of: 1) a presence of the low-voltage fan signal on the thermostat “G” terminal (204) received by the fan controller fan signal input (214) and an absence of the low-voltage signal received by the fan controller heat source and an absence of the low-voltage signal on the HP reversing valve signal input (216) and an absence of the low-voltage signal on the fan controller HPD signal input (234); and2) a presence of the low-voltage AC/HP compressor signal on the thermostat “Y” terminal (207) received by the fan controller AC/HP compressor signal input (215), and an absence of the low-voltage signal received by the fan controller heat source and an absence the low-voltage signal on the HP reversing valve signal input (216) and an absence of the low-voltage signal on the fan controller HPD signal input (234). 11. The fan controller of claim 1, wherein the microprocessor (304) is configured to determine the HP HVAC system type in cooling mode based on at least one of: 1) a presence of the low-voltage fan signal on the thermostat “G” terminal (204) received by the fan controller fan signal input (214) and at least one of: a) a presence of the 24 VAC Hot signal on the thermostat “R” terminal (209) connected by the wire (265) and received by the fan controller HPD signal input (234), and a presence of the low-voltage signal on the reversing valve thermostat “O” terminal (235), electrically connected to the fan controller heat source or HP reversing valve signal input (216); andb) a presence of the system transformer 24 VAC Hot signal leg (210b) connected by the wire (265) and received by the fan controller HPD signal input (234), and a presence of low-voltage signal on the reversing valve thermostat “O” terminal (235), electrically connected to the fan controller heat source or HP reversing valve signal input (216); andc) a presence of the 24 VAC Hot signal on the thermostat “R” terminal (209) connected by the diode (275) and received by the fan controller HPD signal input (234), and an absence of the low-voltage signal on the reversing valve thermostat “BR” terminal (236), electrically connected to the fan controller heat source or HP reversing valve signal input (216); andd) a presence of the system transformer 24 VAC Hot signal leg (210b) connected by the diode (275) and received by the fan controller HPD signal input (234), and an absence of the low-voltage signal on the reversing valve thermostat “BR” terminal (236), electrically connected to the fan controller heat source or HP reversing valve signal input (216);2) a presence of the low-voltage AC/HP compressor signal on the thermostat “Y” terminal (207) received by the fan controller AC/HP compressor signal input (215) and at least one of: a) a presence of the 24 VAC Hot signal on the thermostat “R” terminal (209) connected by the wire (265) and received by the fan controller HPD signal input (234), and a presence of the low-voltage signal on the reversing valve thermostat “O” terminal (235), electrically connected to the fan controller heat source or HP reversing valve signal input (216); andb) a presence of the 24 VAC Hot signal on the system transformer 24 VAC Hot signal leg (210b) connected by the wire (265) and received by the fan controller HPD signal input (234), and a presence of the low-voltage signal on the reversing valve thermostat “O” terminal (235), electrically connected to the fan controller heat source or HP reversing valve signal input (216); andc) a presence of the 24 VAC Hot signal on the thermostat “R” terminal (209) connected through the diode (275) and received by the fan controller HPD signal input (234), and an absence of the low-voltage signal on the reversing valve thermostat “BR” terminal (236), electrically connected to the fan controller heat source or HP reversing valve signal input (216); andd) a presence of the 24 VAC Hot signal on the system transformer 24 VAC Hot signal leg (210b) connected through the diode (275) and received by the fan controller HPD signal input (234), and an absence of the low-voltage signal on the reversing valve thermostat “BR” terminal (236), electrically connected to the fan controller heat source or HP reversing valve signal input (216). 12. The fan controller of claim 1, wherein the microprocessor (304) is configured to determine the gas furnace HVAC system type in heating mode based on: a presence of the low-voltage heat source signal on the thermostat “W” terminal (208) electrically connected to the fan controller heat source or HP reversing valve signal input (216); andan absence of the low-voltage fan signal on the thermostat “G” terminal (204) received by the fan controller fan signal input (214); andan absence of the low-voltage signal received by the fan controller HPD signal input (234). 13. The fan controller of claim 1, wherein the microprocessor (304) is configured to determine the hydronic or electric HVAC system type is in heating mode based on: a presence of the low-voltage heat source signal on the thermostat “W” terminal (208) electrically connected to the fan controller heat source or HP reversing valve signal input (216); anda presence of the low-voltage fan signal on the thermostat “G” terminal (204) electrically connected to the fan controller fan signal input (214); andan absence of the low-voltage signal received by the fan controller HPD signal input (234). 14. The fan controller of claim 1, wherein the microprocessor (304) is configured to determine the HP heating HVAC system type in heating mode based on at least one of: 1) a presence of the low-voltage fan signal on the thermostat “G” terminal (204) electrically connected to the fan controller fan signal input (214) and at least one of: a) a presence of the 24 VAC Hot signal on the thermostat “R” terminal (209) connected by the wire (265) and received by the fan controller HPD signal input (234), and an absence of the low-voltage signal on the reversing valve thermostat “O” terminal (235), electrically connected to the fan controller heat source or HP reversing valve signal input (216); andb) a presence of the system transformer 24 VAC Hot signal leg (210b) connected by the wire (265) and received by the fan controller HPD signal input (234), and an absence of the low-voltage signal on the reversing valve thermostat “O” terminal (235), electrically connected to the fan controller heat source or HP reversing valve signal input (216); andc) a presence of the 24 VAC Hot signal on the thermostat “R” terminal (209) connected by the diode (275) and received by the fan controller HPD signal input (234), and a presence of the low-voltage signal on the reversing valve thermostat “BR” terminal (236) electrically connected to the fan controller heat source or HP reversing valve signal input (216); andd) a presence of the system transformer 24 VAC Hot signal leg (210b) connected by the diode (275) and received by the fan controller HPD signal input (234), and a presence of the low-voltage signal on the reversing valve thermostat “BR” terminal (236) electrically connected to the fan controller heat source or HP reversing valve signal input (216); and2) a presence of the low-voltage AC/HP compressor signal on the thermostat “Y” terminal (207) electrically connected to the fan controller AC/HP compressor signal input (215), and at least one of: a) a presence of the 24 VAC Hot signal on the thermostat “R” terminal (209) connected by the wire (265) and received by the fan controller HPD signal input (234), and an absence of the low-voltage signal on the reversing valve thermostat “O” terminal (235) electrically connected to the fan controller heat source or HP reversing valve signal input (216); andb) a presence of the system transformer 24 VAC Hot signal leg (210b) connected by the wire (265) and received by the fan controller HPD signal input (234), and an absence of the low-voltage signal on the reversing valve thermostat “O” terminal (235) electrically connected to the fan controller heat source or HP reversing valve signal input (216); andc) a presence of the 24 VAC Hot signal on the thermostat “R” terminal (209) connected by the diode (275) and received by the fan controller HPD signal input (234), and a presence of the low-voltage signal on the reversing valve thermostat “BR” terminal (236) electrically connected to the fan controller heat source or HP reversing valve signal input (216); andd) a presence of the system transformer 24 VAC Hot signal leg (210b) connected by the diode (275) and received by the fan controller HPD signal input (234), and a presence of the low-voltage signal on the reversing valve thermostat “BR” terminal (236) electrically connected to the fan controller heat source or HP reversing valve signal input (216). 15. The fan controller of claim 1, wherein the microprocessor (304) is configured to provide the control signal to the switching device (301) to control the fan relay (205) and the system fan/blower (206) for the gas furnace, the hydronic, the electric resistance, or the HP HVAC system in heating mode, by: measuring the off-cycle duration P11 during which the fan controller is not receiving an indication of heat source operation; andcalculating a fan-on time delay based on at least one of: a fan-on delay time P0 consisting of at least one of: a zero fan-on time delay P0; anda non-zero fan-on time delay P0 as a function of the off-cycle duration P11; anda fan-on delay time P1 consisting of at least one of: a non-zero fan-on delay time P1 as a function of heat-source operational time P3; anda non-zero fan-on delay time P1 equal to heat-source operational time P3; andinterrupting the low-voltage signal on the fan controller fan signal input (214) from the low-voltage fan signal on the thermostat “G” terminal (204) to the fan relay (205) and de-energizing the low-voltage signal on the fan controller fan relay signal output (212) to the fan relay (205) during the fan-on time delay, wherein the system fan/blower (206) is controlled by at least one of: 1) the fan controller microprocessor (304) and the switching device (301) electrically connected to the microprocessor (304) to receive the control signal from the microprocessor (304), to provide the control signal to the fan controller fan relay signal output (212), to control the fan relay (205); and2) a furnace fan controller (238) controlling a furnace fan relay (239);initiating the measurement of the heat-source operational time P3;delaying energizing the low-voltage signal to the fan controller fan relay signal output (212) until the fan-on time delay has expired based on at least one of: 1) the current heat-source operational time P3 for the gas furnace HVAC system based on the low-voltage heat signal present on the thermostat “W” terminal (208); and2) the fan-on delay time P1 for the gas furnace HVAC system while the current accumulation of heat-source operational time P3 is less than the fan-on delay time P1; and3) the fan-on delay time P0 for the hydronic, the electric resistance, or the HP HVAC system while the current accumulation of heat-source operational time P3 is less than the fan-on delay time P0;energizing the low-voltage signal on the fan controller fan relay signal output (212) to the fan relay (205) thereby turning ON the system fan/blower (206) after the fan-on time delay time has expired;operating the system fan/blower (206) for the entire duration of the heat-source operational time P3 while the thermostat signal continues to indicate the heat source operation based on the continuous low-voltage thermostat signal;measuring the heat-source operational time P3 until the thermostat signal dis-continues to indicate the heat source operation based on receiving no indication of the heat source operation by the fan controller; andcalculating a fan-off time delay period P2 as a function of the heat-source operational time P3;providing the control signal to the switching device (301) to continue to provide the low-voltage control signal on the fan controller fan relay signal output (212) to control the fan relay (205) by the fan controller to continue to operate the system fan/blower (206) for the fan-off time delay period P2 after the thermostat signal dis-continues to indicate the heat source operation;waiting the fan-off time delay period P2 while continuing to provide the low-voltage signal on the fan controller fan relay signal output (212) to control the fan relay (205) for the entire fan-off time delay period P2 when the fan-off time delay period P2 elapses, by the fan controller; andde-energizing the low-voltage signal on the fan controller fan relay signal output (212) to the fan relay (205) when the fan-off time delay period P2 elapses, by the fan controller. 16. The fan controller of claim 15, wherein measurement of the off-cycle duration P11 is based on receiving no indication of the heat source operation by the fan controller, from at least one of: 1) an absence of the low-voltage signal on the fan controller heat source or HP reversing valve signal input (216), and an absence of the fan controller HPD signal input (234); and2) an absence of the low-voltage signal on the fan controller fan signal input (214) and a presence of the low-voltage unrectified, positively rectified, or negatively rectified signal on the fan controller HPD signal input (234). 17. The fan controller of claim 15, wherein the fan-on delay time P0 comprises at least one of: a zero time delay; anda non-zero time delay based on the off-cycle duration P11. 18. The fan controller of claim 15, wherein the measurement of the heat-source operational time P3 is based on at least one of: 1) a presence of the low-voltage heat source signal on the thermostat “W” terminal (208) received by the fan controller heat source or HP reversing valve signal input (216) and an absence of the low-voltage fan signal on the thermostat “G” terminal (204) received by the fan controller fan signal input (214) and an absence of the low-voltage fan controller HPD signal input (234) for the gas furnace HVAC system;2) a presence of the low-voltage fan signal on the thermostat “G” terminal (204) received by the fan controller fan signal input (214) and a presence of the low-voltage heat source signal on the thermostat “W” terminal (208) received by the fan controller heat source or HP reversing valve signal input (216) and an absence of the low-voltage signal on the fan controller HPD signal input (234) for the hydronic or electric resistance HVAC system;3) a presence of the low-voltage fan signal on the thermostat “G” terminal (204) received by the fan controller fan signal input (214) and an absence of a low-voltage signal on the HP reversing valve thermostat “O” terminal (235) received by the fan controller heat source or HP reversing valve signal input (216), and a presence of the unrectified low-voltage signal on the fan controller HPD signal input (234) connected with the wire (265) to the 24 VAC Hot signal on the thermostat “R” terminal (209) or the system transformer 24 VAC Hot signal leg (210b) for a heat pump HVAC system with reversing valve energized in cooling mode; and4) a presence of the low-voltage fan signal on the thermostat “G” terminal (204) received by the fan controller fan signal input (214) and a presence of a low-voltage signal on the HP reversing valve thermostat “BR” terminal (236) received by the fan controller heat source or HP reversing valve signal input (216), and a presence of the positively or negatively rectified low-voltage signal on the fan controller HPD signal input (234) connected with the diode (275) to the thermostat Hot “R” terminal or the system transformer 24 VAC Hot signal leg (210b) for a heat pump HVAC system with reversing valve energized in heating mode;5) a presence of the low-voltage AC/HP signal on the thermostat “Y” terminal (207) received by the fan controller fan signal input (215) and an absence of the low-voltage signal on the HP reversing valve thermostat “O” terminal (235) received by the fan controller heat source or HP reversing valve signal input (216), and a presence of the unrectified low-voltage signal on the fan controller HPD signal input (234) connected with the wire (265) to the 24 VAC Hot signal on the thermostat “R” terminal (209) or the system transformer 24 VAC Hot signal leg (210b) for the heat pump HVAC system with reversing valve energized in cooling mode; and6) a presence of the low-voltage AC/HP signal on the thermostat “Y” terminal (207) received by the fan controller fan signal input (215) and a presence of the low-voltage signal on the HP reversing valve thermostat “BR” terminal (236) received by the fan controller heat source or HP reversing valve signal input (216), and a presence of the positively or negatively rectified low-voltage signal on fan controller HPD input (234) connected with the diode (275) to the thermostat Hot “R” terminal or the system transformer 24 VAC Hot signal leg (210b) for the heat pump HVAC system with reversing valve energized in heating mode. 19. The fan controller of claim 15, wherein measuring the heat-source operational time P3 until the thermostat signals discontinue to indicate that the heat source is operating by the fan controller based on at least one of: 1) an absence of a low-voltage signal on the fan controller heat source or HP reversing valve signal input (216), and an absence of the fan controller HPD signal input (234); and2) an absence of a low-voltage signal on the fan controller fan signal input (214) and a presence of the low-voltage unrectified, positively rectified, or negatively rectified signal on the fan controller HPD signal input (234). 20. The fan controller of claim 1, wherein the microprocessor (304) is configured to provide the control signal to the switching device (301) to control the fan relay (205) and the system fan/blower (206) for the gas furnace, hydronic, electric resistance, or HP HVAC system types in cooling mode, by: measuring the off-cycle duration P11 based on an absence of an indication of cool source operation, by the fan controller;calculating the fan-on delay time P0 as at least one of: zero time delay; andnon-zero time delay based on the off-cycle duration P11;receiving the indication of the cool source operation and measuring the cool-source operational time P4 by the fan controller;interrupting the electrical connection between the low-voltage fan signal on the thermostat “G” terminal (204) and the fan relay (205);measuring the cool-source operational time P4 while the cool-source is active for the fan-on delay time P0 wherein the low-voltage signal on the fan controller fan relay signal output (212) is de-energized to the fan relay (205) and system fan/blower (206) is OFF, based on the previous off-cycle duration P11;energizing the low-voltage signal on the fan controller fan relay signal output (212) by the fan controller to turn ON the fan relay (205) and turning ON the system fan/blower (206) by the fan controller after the fan-on delay time P0;continuing to measure the cool-source operational time P4 by the fan controller until operation of the cool source has ended, to determine the cool-source operational time P4;calculating the fan-off time delay period P2 as a function of the cool-source operational time P4;continuing providing the low-voltage signal on the fan controller fan relay signal output (212) to the fan relay (205) by the fan controller, until operation of the cool source has ended;waiting the fan-off time delay period P2 while continuing to provide the low-voltage signal on the fan controller fan relay signal output (212) to control the fan relay (205) for the entire fan-off time delay period P2, by the fan controller; andde-energizing the low-voltage signal on the fan controller fan relay signal output (212) to the fan relay (205) when the fan-off time delay period P2 elapses, by the fan controller. 21. The fan controller of claim 20, wherein measuring the off-cycle duration P11 is based at least one of: 1) an absence of the low-voltage signal on the fan controller fan signal input (214), and an absence of the low-voltage signal on the fan controller HPD signal input (234);2) an absence of the low-voltage signal on the fan controller fan signal input (214), and a presence of the low-voltage unrectified, positively rectified, or negatively rectified signal on the fan controller HPD signal input (234);3) an absence of the low-voltage signal on the fan controller AC/HP compressor signal input (215), and an absence of the low-voltage signal on the fan controller HPD signal input (234); and4) an absence of the low-voltage signal on the fan controller AC/HP compressor signal input (215), and a presence of the low-voltage unrectified, positively rectified, or negatively rectified signal on the fan controller HPD signal input (234). 22. The fan controller of claim 20, wherein the measurement of the cool-source operational time P4 is based on at least one of: 1) a presence of the low-voltage signal on the fan controller fan signal input (214) and an absence of the low-voltage signal on the fan controller heat source or HP reversing valve signal input (216) and an absence of the low-voltage signal on the fan controller HPD signal input (234) for the gas furnace, hydronic or electric resistance HVAC system in cooling mode;2) a presence of the low-voltage signal on the fan controller fan signal input (214) and a presence of the low-voltage signal on the fan controller heat source or HP reversing valve signal input (216) and a presence of the unrectified low-voltage signal on the fan controller HPD signal input (234) for the heat pump system with reversing valve “O” energized for cooling;3) a presence of the low-voltage signal on the fan controller fan signal input (214) and an absence of the low-voltage signal on the fan controller heat source or HP reversing valve signal input (216) and a presence of the positively or negatively rectified low-voltage signal on the fan controller HPD signal input (234) for the heat pump system with reversing valve “BR” not energized for cooling;4) a presence of the low-voltage signal on the fan controller AC/HP compressor signal input (215) and an absence of the low-voltage signal on the fan controller HPD signal input (234) for the gas furnace, hydronic or electric resistance HVAC system in cooling mode;5) a presence of the low-voltage signal on the fan controller AC/HP compressor signal input (215) and a presence of the low-voltage signal on the fan controller heat source or HP reversing valve signal input (216) and a presence of the unrectified low-voltage signal on the fan controller HPD signal input (234) for the heat pump system with reversing valve “O” energized for cooling; and6) a presence of the low-voltage signal on the fan controller AC/HP compressor signal input (215) and an absence of the low-voltage signal on the fan controller heat source or HP reversing valve signal input (216) and a presence of the positively or negatively rectified low-voltage signal on the fan controller HPD signal input (234) for the heat pump system with reversing valve “BR” not energized for cooling. 23. The fan controller of claim 20, wherein the fan controller measures the cool-source operational time P4 until the thermostat signal dis-continues to indicate the cool source operation, is based on at least one of: 1) an absence of the low-voltage signal on the fan controller fan signal input (214), and an absence of the low-voltage signal on the fan controller HPD signal input (234);2) an absence of the low-voltage signal on the fan controller fan signal input (214), and a presence of the low-voltage unrectified, positively rectified, or negatively rectified signal on the fan controller HPD signal input (234);3) an absence of the low-voltage signal on the fan controller AC/HP compressor signal input (215), and an absence of the low-voltage signal on the fan controller HPD signal input (234); and4) an absence of the low-voltage signal on the fan controller AC/HP compressor signal input (215), and a presence of the low-voltage unrectified, positively rectified, or negatively rectified signal on the fan controller HPD signal input (234). 24. The fan controller of claim 20, wherein the cool-source operational time P4 is based on the duration of the continuous low-voltage signal measured on at least one of: 1) a presence of the low-voltage signal on the fan controller fan signal input (214) and an absence of the low-voltage signal on the fan controller heat source or HP reversing valve signal input (216) and an absence of the low-voltage signal on the fan controller HPD signal input (234) for the gas furnace, hydronic or electric resistance HVAC system in cooling mode;2) a presence of the low-voltage signal on the fan controller fan signal input (214) and a presence of the low-voltage signal on the fan controller heat source or HP reversing valve signal input (216) and a presence of the unrectified low-voltage signal on the fan controller HPD signal input (234) for the heat pump system with reversing valve energized for cooling;3) a presence of the low-voltage signal on the fan controller fan signal input (214) and an absence of the low-voltage signal on the fan controller heat source or HP reversing valve signal input (216) and a presence of the positively or negatively rectified low-voltage signal on the fan controller HPD signal input (234) for the heat pump system with reversing valve not energized for cooling;4) a presence of the low-voltage signal on the fan controller AC/HP compressor signal input (215) and an absence of the low-voltage signal on the fan controller HPD signal input (234) for the gas furnace, hydronic or electric resistance HVAC system in cooling mode;5) a presence of the low-voltage signal on the fan controller AC/HP compressor signal input (215) and a presence of the low-voltage signal on the fan controller heat source or HP reversing valve signal input (216) and a presence of the active unrectified low-voltage signal on the fan controller HPD signal input (234) for the heat pump system with reversing valve energized for cooling; and6) a presence of the low-voltage signal on the fan controller AC/HP compressor signal input (215) and an absence of the low-voltage signal on the fan controller heat source or HP reversing valve signal input (216) and a presence of the positively or negatively rectified low-voltage signal on the fan controller HPD signal input (234) for the heat pump system with reversing valve not energized for cooling. 25. The fan controller of claim 20, wherein the fan-off time delay period P2 is linearly increased in cooling mode by the fan controller from zero to an upper limit as the cool-source operational time P4 increases from a minimum value to a maximum value or greater. 26. A fan controller for a Heating Ventilation and Air Conditioning (HVAC) system (100) including a direct-expansion air conditioner and at least one of a gas furnace, a Heat Pump (HP), an electric heating element, and a hydronic heating element, the fan controller comprising: electrical inputs configured to receive electrical signals from HVAC thermostat or equipment control terminals (201), comprising at least one of: 1) a fan controller fan signal input (214) configured to detect at least one of: a) a presence of a low-voltage fan signal on a thermostat “G” terminal (204) to allow measurement of a cool-source operational time P4 or heat-source operational time P3 in order to calculate a fan-off time delay P2; andb) an absence of a low-voltage fan signal on a thermostat “G” terminal (204) to allow measurement of an off-cycle time P11;2) a fan controller heat source or HP reversing valve signal input (216), configured to detect at least one of: a) a presence of low-voltage heat signal on the thermostat “W” terminal (208) to allow measurement of a heat-source operational time P3 in order to calculate a fan-off time delay P2; andb) an absence of a low-voltage fan signal on a thermostat “W” terminal (208) to allow measurement of an off-cycle time P11; andc) a presence or absence of an HP reversing valve signal on a thermostat “O” terminal (235) or an HP low-voltage reversing valve signal on the thermostat “BR” terminal (236) to allow measurement of the HP operational mode;3) a fan controller AC/HP compressor signal input (215) configured to detect at least one of: a) a presence of a low-voltage AC/HP compressor signal on a thermostat “Y” terminal (207) to allow measurement of a cool-source operational time P4 or heat-source operational time P3 in order to calculate a fan-off time delay P2; andb) an absence of a low-voltage fan signal on a thermostat “Y” terminal (207) to allow measurement of an off-cycle time P11; and4) a fan controller HP Detection (HPD) signal input (234) configured to detect a presence or absence of a low-voltage signal from a system transformer (210) 24 VAC Hot leg (210b) connected to the fan controller HPD signal input (234) with a diode (275) or with only a wire (265) to indicate whether or not the fan controller is connected to a HP and type of HP reversing valve;a microprocessor (304) residing in the fan controller;a low-voltage DC power source electrically connected to the microprocessor (304) to provide a DC power signal, the DC power source selected from at least one of: a low-voltage battery (306);an AC-DC converter (303); anda super capacitor (312);a switching device (301) electrically connected to the microprocessor (304) and configured to receive a control signal from the microprocessor (304), the switching device (301) configured to provide a fan controller fan relay signal output (212) from the switching device (301) to a fan relay (205) to provide a low-voltage fan relay signal to energize the fan relay (205);the microprocessor (304) further configured to provide a control signal to the switching device (301) to energize the fan relay (205) after the signals received from the HVAC thermostat or equipment control terminals (201) indicate that either a cool source is active or a heat source is active;the microprocessor (304) further configured to process the electrical signals from the HVAC thermostat or equipment control terminals (201) to measure cool-source operational time P4 or heat-source operational time P3; andthe microprocessor (304) further configured to calculate a fan-off time delay period P2 as a function of cool-source operational time P4 or heat-source operational time P3; andthe microprocessor (304) further configured to provide the control signal to the switching device (301) to energize the fan relay (205) for the fan-off time delay period P2; andthe microprocessor (304) further configured to remove the control signal to the switching device (301) to de-energize the fan relay (205) at the end of the fan-off time delay period P2. 27. The fan controller of claim 26, wherein the measurement of the cool-source operational time P4 is based on at least one of: 1) a presence of the low-voltage signal on the fan controller fan signal input (214) and an absence of the low-voltage signal on the fan controller heat source or HP reversing valve signal input (216) and an absence of the low-voltage signal on the fan controller HPD signal input (234) for the gas furnace, hydronic or electric resistance HVAC system in cooling mode;2) a presence of the low-voltage signal on the fan controller fan signal input (214) and a presence of the low-voltage signal on the fan controller heat source or HP reversing valve signal input (216) and a presence of the unrectified low-voltage signal on the fan controller HPD signal input (234) for a heat pump system with reversing valve energized for cooling;3) a presence of the low-voltage signal on the fan controller fan signal input (214) and an absence of low-voltage signal on the fan controller heat source or HP reversing valve signal input (216) and a presence of the positively or negatively rectified low-voltage signal on the fan controller HPD signal input (234) for a heat pump system with reversing valve not energized for cooling;4) a presence of the low-voltage signal on fan controller AC/HP compressor signal input (215) and an absence of the low-voltage signal on the fan controller HPD signal input (234) for the gas furnace, hydronic or electric resistance HVAC system in cooling mode;5) a presence of the low-voltage signal on fan controller AC/HP compressor signal input (215) and a presence of the low-voltage signal on the fan controller heat source or HP reversing valve signal input (216) and a presence of the unrectified low-voltage signal on the fan controller HPD signal input (234) for the heat pump system with reversing valve energized for cooling; and6) a presence of the low-voltage signal on fan controller AC/HP compressor signal input (215) and an absence of the voltage-signal on the fan controller heat source or HP reversing valve signal input (216) and a presence of the positively or negatively rectified low-voltage signal on the fan controller HPD signal input (234) for the heat pump system with reversing valve not energized for cooling. 28. The fan controller of claim 26, wherein the measurement of the heat-source operational time P3 is based on at least one of: 1) a presence of the low-voltage heat source signal on the thermostat “W” terminal (208) received by the fan controller heat source or HP reversing valve signal input (216) and an absence of the low-voltage fan signal on the thermostat “G” terminal (204) received by the fan controller fan signal input (214) and an absence of the low-voltage signal on the fan controller HPD signal input (234) for the gas furnace HVAC system; and2) a presence of the low-voltage fan signal on the thermostat “G” terminal (204) received by the fan controller fan signal input (214) and a presence of the low-voltage heat source signal on the thermostat“W” terminal (208) received by the fan controller heat source or HP reversing valve signal input (216) and an absence of the low-voltage signal on the fan controller HPD signal input (234) for the hydronic or electric resistance HVAC system;3) a presence of the low-voltage fan signal on the thermostat “G” terminal (204) received by the fan controller fan signal input (214) and an absence of the low-voltage signal on the HP reversing valve thermostat “O” terminal (235) received by the fan controller heat source or HP reversing valve signal input (216), and a presence of the unrectified low-voltage signal on the fan controller HPD signal input (234) connected with the wire (265) to the 24 VAC Hot signal on the thermostat “R” terminal (209) or the system transformer 24 VAC Hot signal leg (210b) for the heat pump HVAC system with reversing valve energized in cooling mode; and4) a presence of the low-voltage fan signal on the thermostat “G” terminal (204) received by the fan controller fan signal input (214) and a presence of the low-voltage HP reversing valve signal on the thermostat “BR” terminal (236) received by the fan controller heat source or HP reversing valve signal input (216), and a presence of the positively or negatively rectified low-voltage signal on fan controller HPD signal input (234) connected with the diode (275) to the thermostat Hot “R” terminal or the system transformer 24 VAC Hot signal leg (210b) for the heat pump HVAC system with reversing valve energized in heating mode;5) a presence of the low-voltage AC/HP signal on the thermostat “Y” terminal (207) received by the fan controller AC/HP signal input (215) and an absence of the low-voltage signal on the HP reversing valve thermostat “O” terminal (235) received by the fan controller heat source or HP reversing valve signal input (216), and the presence of the unrectified low-voltage signal on the fan controller HPD signal input (234) connected with the wire (265) to the 24 VAC Hot signal on the thermostat “R” terminal (209) or the system transformer 24 VAC Hot signal leg (210b) for the heat pump HVAC system with reversing valve energized in cooling mode; and6) a presence of the low-voltage AC/HP signal on the thermostat “Y” terminal (207) received by the fan controller AC/HP signal input (215) and a presence of the low-voltage signal on the HP reversing valve thermostat “BR” terminal (236) received by the fan controller heat source or HP reversing valve signal input (216), and a presence of the positively or negatively rectified low-voltage signal received by the fan controller HPD signal input (234) connected with the diode (275) to the thermostat Hot “R” terminal or the system transformer 24 VAC Hot signal leg (210b) for the heat pump HVAC system with reversing valve energized in heating mode. 29. A method for efficiently controlling an HVAC system (100) in heating mode, the method comprising: electrically connecting a fan controller to HVAC thermostat or equipment control terminals (201) of an existing HVAC system;measuring an off-cycle duration P11 based on an absence of an indication of heat source operation by the fan controller;receiving an indication of the heat source operation from the HVAC thermostat or equipment control terminals (201) by the fan controller;interrupting electrical communication between a fan relay signal on a low-voltage fan signal on the thermostat “G” terminal (204) and a fan relay (205);calculating a fan-on time delay based on at least one of: a fan-on delay time P0 consisting of at least one of: a zero time delay; anda non-zero time delay based on the off-cycle duration P11; anda fan-on delay time P1 consisting of at least one of: a fan-on delay time P1 based on a heat-source operational time P3; anda fan-on delay time P1 equal to heat-source operational time P3; andinterrupting the low-voltage signal on a fan controller fan signal input (214) from the low-voltage fan signal on the thermostat “G” terminal (204) to the fan relay (205) and de-energizing the low-voltage signal on a fan controller fan relay signal output (212) to the fan relay (205) during the fan-on time delay where a system fan/blower (206) is controlled by at least one of: 1) the fan controller microprocessor (304) and the switching device (301) electrically connected to the microprocessor (304) to receive the control signal from the microprocessor (304) to provide a control signal to the fan controller fan relay signal output (212) to control the fan relay (205); and2) a furnace fan controller (238) controlling a furnace fan relay (239);initiating the accumulation of a heat-source operational time P3 based on the low-voltage heat signal present on the thermostat “W” terminal (208);delaying energizing the low-voltage signal to the fan controller fan relay signal output (212) based on at least one of: 1) the current heat-source operational time P3 for the gas furnace HVAC system; and2) the fan-on delay time P1 for the gas furnace HVAC system while the current accumulation of heat-source operational time P3 is less than the fan-on delay time P1; and3) the fan-on delay time P0 for the hydronic, electric resistance, or heat pump HVAC system while the current accumulation of heat-source operational time P3 is less than the fan-on delay time P0;energizing the low-voltage signal on the fan controller fan relay signal output (212) to fan relay (205) thereby turning ON the system fan/blower (206) after the fan-on time delay time has expired;operating the system fan/blower (206) for the entire duration of the heat-source operational time P3 while the thermostat signal continues to indicate the heat source operation based on the continuous low-voltage thermostat signal; andmeasuring the heat-source operational time P3 until the thermostat signals dis-continue to indicate the heat source operation based on receiving no indication of the heat source operation by the fan controller; andcalculating a fan-off time delay period P2 as a function of the heat-source operational time P3;providing the control signal to the switching device (301) to continue to provide the low-voltage control signal on the fan controller fan relay signal output (212) to control the fan relay (205) by the fan controller to continue to operate the system fan/blower (206) for the fan-off delay time period P2 after the thermostat signal dis-continues to indicate the heat source operation;waiting the fan-off time delay period P2 while continuing to provide the low-voltage signal on the fan controller fan relay signal output (212) to control the fan relay (205) for the entire fan-off time delay period P2 when the fan-off time delay period P2 elapses, by the fan controller; andde-energizing the low-voltage signal on the fan controller fan relay signal output (212) to the fan relay (205) when the fan-off time delay period P2 elapses, by the fan controller. 30. A method for efficiently controlling an HVAC system (100) in cooling mode, the method comprising: electrically connecting a fan controller to an HVAC thermostat or equipment control terminals (201) of an existing HVAC system;receiving an indication of cool source operation by the fan controller; and interrupting electrical communication between a fan relay signal on the low-voltage fan signal on the thermostat “G” terminal (204) and a fan relay (205);providing a low-voltage signal on a fan controller fan relay signal output (212) to the fan relay (205) thereby energizing a system fan/blower (206), while the thermostat signal continues to indicate the cool source operation based on the continuous low-voltage cool source thermostat signal; measuring a cool-source operational time P4 until the thermostat signal dis-continues to indicate the cool source operation;calculating a fan-off time delay period P2 as a function of the cool-source operational time P4;providing the low-voltage signal on the fan controller fan relay signal output (212) to control the fan relay (205) by the fan controller after the thermostat signal dis-continues to indicate the cool source operating;waiting the fan-off time delay period P2 while continuing to provide the low-voltage signal on the fan controller fan relay signal output (212) to control the fan relay (205) for the entire fan-off time delay period P2, by the fan controller; andde-energizing the low-voltage signal on the fan controller fan relay signal output (212) to the fan relay (205) when the fan-off time delay period P2 elapses, by the fan controller.
Copyright KISTI. All Rights Reserved.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.