Variable speed, electronically controlled, room air conditioner
First Claim
1. A variable speed air handling system for heating and/or cooling a room, the system comprising:
- a fan assembly to transport air from the system into the room, the fan assembly having a substantially continuously adjustable speed within a range of speeds defined by a predetermined upper limit and a predetermined lower limit;
a user interface to transmit a signal in response to a desired speed of the fan assembly input by an operator via the user interface;
a control unit for substantially continuously adjusting the speed of the fan assembly to a speed in the range of speeds in response to the signal transmitted by the user interface; and
a climate control unit for heating and/or cooling the air to be transported from the air conditioner by the fan assembly.
1 Assignment
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Accused Products
Abstract
A variable speed air handling system for cooling and/or heating a room and a method of controlling the system. The system includes a fan assembly to transport air from the system into the room, the fan assembly having a substantially continuously adjustable speed within a range of speeds defined by a predetermined upper limit and a predetermined lower limit. A user interface transmits a signal in response to a desired speed of the fan assembly input by an operator via the user interface. The system further includes a control unit to substantially continuously adjust the speed of the fan assembly to a speed in the range of speeds in response to the signal transmitted by the user interface, and a climate control unit for heating and/or cooling the air to be transported from the air conditioner by the fan assembly.
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Citations
50 Claims
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1. A variable speed air handling system for heating and/or cooling a room, the system comprising:
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a fan assembly to transport air from the system into the room, the fan assembly having a substantially continuously adjustable speed within a range of speeds defined by a predetermined upper limit and a predetermined lower limit;
a user interface to transmit a signal in response to a desired speed of the fan assembly input by an operator via the user interface;
a control unit for substantially continuously adjusting the speed of the fan assembly to a speed in the range of speeds in response to the signal transmitted by the user interface; and
a climate control unit for heating and/or cooling the air to be transported from the air conditioner by the fan assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A variable speed air handling system for heating and/or cooling a room, the air handling system comprising:
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a fan assembly comprising;
a fan motor having a single main stator winding; and
a fan operatively connected to be driven by the fan motor to transport air from the air handling system into the room;
a user interface for inputting at least a desired speed of the fan motor;
a control unit for modulating an electrical power signal delivered to the fan motor to substantially continuously adjust the speed of the fan motor according to the desired speed of the fan motor input via the user interface; and
a climate control unit for removing thermal energy from the air to be transported from the air handling system by the fan assembly. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A variable speed air handling system for heating and/or cooling a room, the air handling system comprising:
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a user interface that transmits a signal in response to a desired operational mode of the air handling system input by an operator via the user interface;
a controller for transmitting a control signal in response to the signal transmitted by the user interface;
a climate control unit for heating and/or cooling air to be discharged from the air handling system into the room;
a heat exchange surface in thermal communication with the climate control unit;
a fan assembly to transport air from an external environment into the room after having thermal energy removed by the climate control unit, the fan having a substantially continuously variable speed; and
a sensor disposed to sense a frost condition on the heat exchange surface, wherein operation of the climate control unit is prevented for a period of time lasting until the sensor detects the elimination of at least a portion of the frost condition, wherein the fan is continuously operated during the period of time when operation of the climate control unit is prevented.
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35. A method of controlling a variable speed air handling system to be installed in a window of a room, the air handling system comprising a control unit, a climate control unit, and a fan assembly including a fan motor for driving a fan, the method comprising steps of:
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providing a user interface to allow at least a desired operational mode of the air handling system and a desired speed of the fan motor to be input by an operator;
controlling an operation of the climate control unit in response to the desired operational mode input via the user interface; and
adjusting a speed of the fan motor in a substantially continuous manner to drive the fan at the desired speed of the fan motor input via the user interface. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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46. A refrigeration unit comprising:
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a heat exchanger;
a fan for providing air flow to the heat exchanger;
a compressor;
a power supply providing a supply voltage to the compressor; and
a control unit that increases an operating speed of the fan when a low voltage condition of the supply voltage is sensed. - View Dependent Claims (47)
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48. A refrigeration unit comprising:
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a heat exchanger;
a fan;
a compressor;
a power supply providing a supply voltage to the fan motor and to the compressor; and
a control unit that, following an interruption in the supply voltage, starts the fan and then waits for a delayed-start period before starting the compressor. - View Dependent Claims (49)
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50. A refrigeration unit comprising:
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a heat exchanger;
a fan;
a compressor;
a power supply providing a supply voltage to the fan motor and to the compressor;
an operator control for setting a desired fan speed; and
a control unit that, when a low voltage condition of the supply voltage is sensed, starts the fan at a higher speed than the desired fan speed and then subsequently reduces the fan to the desired fan speed.
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Specification