HVAC CONTROL SYSTEM FOR HOUSEHOLD CENTRAL AIR CONDITIONING
First Claim
1. An HVAC control system for a household central air conditioning, comprising:
- a) an HVAC system controller, the HVAC system controller comprising an HVAC microprocessor, a sensor, an interface unit for motor control, a power supply part, and a signal processing circuit;
the interface unit for motor control comprising an inverter unit and a rotor position detection unit;
b) a centrifugal blower motor;
c) a compressor motor; and
d) an axial fan motor;
whereinthe power supply part supplies power to each circuit part;
the sensor sends a detected signal to the HVAC microprocessor via the signal processing circuit;
at least one of the centrifugal blower motor, the compressor motor, and the axial fan motor is a permanent magnet synchronous motor in the absence of a motor controller;
the HVAC microprocessor drives the permanent magnet synchronous motor in the absence of a motor controller via the inverter unit; and
the rotor position detection unit sends a rotor position signal of the permanent magnet synchronous motor in the absence of a motor controller to the HVAC microprocessor.
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Accused Products
Abstract
An HVAC control system for a household central air conditioning, including an HVAC system controller, a centrifugal blower motor, a compressor motor, and an axial fan motor. The HVAC system controller includes an HVAC microprocessor, a sensor, an interface unit for motor control, a power supply part, and a signal processing circuit. The interface unit for motor control includes an inverter unit and a rotor position detection unit. At least one of the centrifugal blower motor, the compressor motor, and the axial fan motor is a permanent magnet synchronous motor in the absence of a motor controller. The HVAC microprocessor drives the permanent magnet synchronous motor in the absence of a motor controller via the inverter unit. The rotor position detection unit sends a rotor position signal of the permanent magnet synchronous motor in the absence of a motor controller to the HVAC microprocessor.
26 Citations
22 Claims
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1. An HVAC control system for a household central air conditioning, comprising:
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a) an HVAC system controller, the HVAC system controller comprising an HVAC microprocessor, a sensor, an interface unit for motor control, a power supply part, and a signal processing circuit;
the interface unit for motor control comprising an inverter unit and a rotor position detection unit;b) a centrifugal blower motor; c) a compressor motor; and d) an axial fan motor; wherein the power supply part supplies power to each circuit part; the sensor sends a detected signal to the HVAC microprocessor via the signal processing circuit; at least one of the centrifugal blower motor, the compressor motor, and the axial fan motor is a permanent magnet synchronous motor in the absence of a motor controller; the HVAC microprocessor drives the permanent magnet synchronous motor in the absence of a motor controller via the inverter unit; and the rotor position detection unit sends a rotor position signal of the permanent magnet synchronous motor in the absence of a motor controller to the HVAC microprocessor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
the gas induced draft fan motor is an AC motor or a permanent magnet synchronous motor in the absence of a motor controller.
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10. The system of claim 1, wherein the rotor position detection unit is a phase current detection circuit.
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11. The system of claim 1, wherein
the interface unit for motor control further comprises at least one relay and a drive circuit thereof; - and
the HVAC microprocessor is connected to the AC motor via the relay and the drive circuit thereof.
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12. An HVAC control system for a household central air conditioning, comprising:
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a) a first controller for an indoor unit, the first controller comprising;
a first microprocessor, a sensor, a first interface unit for motor control, a first power supply part, and a signal processing circuit;
the first interface unit for motor control comprising at least one inverter unit and one rotor position detection unit;b) a second controller for an outdoor unit, the second controller comprising;
a second microprocessor, a second interface unit for motor control, and a second power supply part;
the second interface unit for motor control comprising at least one inverter unit and one rotor position detection unit;c) a centrifugal blower motor; d) a compressor motor; and e) an axial fan motor; wherein the first power supply part supplies power to each circuit part of the first controller; the sensor sends a detected signal to the first microprocessor via the signal processing circuit; the second power supply part supplies power to each circuit part of the second controller; the second microprocessor controls the compressor motor and the axial fan motor via the second interface unit for motor control; the first microprocessor controls the centrifugal blower motor via the first interface unit for motor control; at least one of the centrifugal blower motor, the compressor motor, and the axial fan motor is a permanent magnet synchronous motor in the absence of a motor controller; the first microprocessor or the second microprocessor drives the permanent magnet synchronous motor in the absence of a motor controller via the inverter unit; and the rotor position detection unit sends a rotor position signal of the permanent magnet synchronous motor in the absence of a motor controller to the first microprocessor or the second microprocessor. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
the gas induced draft fan motor is an AC motor or a permanent magnet synchronous motor in the absence of a motor controller.
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21. The system of claim 12, wherein the rotor position detection unit is a phase current detection circuit.
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22. The system of claim 12, wherein
each of the first interface unit for motor control and the second interface unit for motor control further comprises at least one relay and a drive circuit thereof; - and
the first microprocessor or the second microprocessor is connected to the AC motor via the relay and the drive circuit thereof.
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Specification