Air distribution fan recycling control
DC CAFCFirst Claim
1. A fan recycling control apparatus for a central air conditioning(CAC) system comprising:
- a circulating fan;
a central air conditioning system with ducts to distribute cooled and heated conditioned air throughout a building;
a thermostat for activating and deactivating both the central air conditioning system and the circulating fan; and
a recycle control for periodically activating and deactivating only the circulating fan after a preselected time period, since the central air conditioning system or the circulating fan have been deactivated.
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Abstract
An system for controlling the operation of the circulating fan of a closed central air conditioning(CAC) system is disclosed. The system periodically activates and deactivates only the circulating fan after a preselected delay time from the normal running of the cooling and heating modes of the CAC system. The preselected delay time is adjustable based on non thermostat parameters and include parameters such as room volume size to be ventilated and the number of occupants in the room. The control can periodically distribute and mix ventilation air or spot-conditioned (humidified, de-humidified, or cleaned) air while the CAC system is not running in the heating, cooling or constant fan modes. The cooling and heating modes of the CAC system operate independently of the fan recycling control.
95 Citations
18 Claims
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1. A fan recycling control apparatus for a central air conditioning(CAC) system comprising:
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a circulating fan; a central air conditioning system with ducts to distribute cooled and heated conditioned air throughout a building; a thermostat for activating and deactivating both the central air conditioning system and the circulating fan; and a recycle control for periodically activating and deactivating only the circulating fan after a preselected time period, since the central air conditioning system or the circulating fan have been deactivated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of mixing air throughout a building when not running a heating and cooling air conditioning system comprising the steps of:
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shutting off both cooling and heating modes on an air-conditioning system; activating a circulating fan only after preselected delay time periods, wherein each the delay time periods is adjusted based on nontemperature conditions, wherein the nontemperature conditions are chosen from at least one of; volume dimensions of an air-space to be ventilated and number of occupants of the air-space to be ventilated. - View Dependent Claims (11, 12, 13, 14)
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15. An automated fan recycling control apparatus for a central air conditioning(CAC) system comprising:
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a circulating fan; a central air conditioning system with ducts to distribute cooled and heated conditioned air throughout a building; a thermostat for activating and deactivating both the central air conditioning system and the circulating fan; and a recycle control for periodically activating and deactivating only the circulating fan after a preselected time period based on selected nontemperature conditions, since the central air conditioning system or the circulating fan have been deactivated, and wherein the nontemperature conditions are chosen from at least one of; volume dimensions of an air-space to be ventilated and number of occupants of the air-space to be ventilated. - View Dependent Claims (16, 17, 18)
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Specification