Multi-Input Relay Board
First Claim
Patent Images
1. A heating, ventilating, air conditioning, or refrigeration fan power supply device comprising:
- a transformer configured to convert an approximately 277 volt input to an approximately 24 volt output and to convert at least one of an approximately 230 volt input, an approximately 208 volt input, and an approximately 115 volt input to the approximately 24 volt output; and
a distribution circuit configured to receive the output and to provide power to a motor electrically coupled to one of the inputs.
1 Assignment
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Accused Products
Abstract
Fan relay boards are provided that include terminals configured to receive line power of approximately 115 volts, 208 volts, 230 volts, and 277 volts. The boards are configured to convert the line power to an approximately 24 volt output that is applied to a distribution circuit to select a high, medium, or low fan speed using relays. The boards may be coupled to a control device that designates the fan speed selected by the relays. The boards also may provide an approximately 24 volt power supply to external devices such as electric heaters, valves, and switches.
32 Citations
22 Claims
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1. A heating, ventilating, air conditioning, or refrigeration fan power supply device comprising:
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a transformer configured to convert an approximately 277 volt input to an approximately 24 volt output and to convert at least one of an approximately 230 volt input, an approximately 208 volt input, and an approximately 115 volt input to the approximately 24 volt output; and a distribution circuit configured to receive the output and to provide power to a motor electrically coupled to one of the inputs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A multi-tap transformer for controlling a speed of a fan for a heating, ventilating, air conditioning, or refrigeration system, the transformer comprising:
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a first tap configured to receive an approximately 277 volt power supply; a second tap configured to receive an approximately 230 volt power supply; a third tap configured to receive an approximately 208 volt power supply; a fourth tap configured to receive an approximately 115 volt power supply; and an output configured to provide an approximately 24 volt power supply to a distribution circuit that selects a designated speed for a fan motor powered by one of the 277 volt power supply, the 230 volt power supply, the 208 volt power supply, and the 115 volt power supply. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A ventilation system comprising:
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a heat exchanger; a fan configured to be driven by a motor and configured to direct air from the heat exchanger to an environment; a circuit board configured to receive a control input and drive the motor at a speed designated by the control input; a transformer mounted on the circuit board, the transformer configured to receive an approximately 277 volt power supply and at least one of an approximately 230 volt power supply, an approximately 208 volt power supply, and an approximately 115 volt power supply and provide an approximately 24 volt output; and a distribution circuit including a plurality of relays configured to permit selection of the speed, the distribution circuit configured to receive the output. - View Dependent Claims (20, 21)
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22. A method for controlling a speed of a fan for a heating, ventilating, air conditioning, or refrigeration system, the method comprising:
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coupling a board to an alternating current building power supply, the board being capable of receiving an approximately 115 volt single phase power supply, an approximately 208 volt single phase power supply, an approximately 230 volt single phase power supply, and an approximately 277 volt single phase power supply provided from an approximately 277 volt building lighting circuit; coupling the board to a control input device configured to designate the speed from one of three different speeds; and coupling the fan to three relays included on the board, each relay configured to select one of the three different speeds.
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Specification