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, an internal sensor, an external sensor, a housing, an interface unit for motor control, a power supply part, and a signal processing circuit;
the interface unit for motor control comprising a first motor control assembly and a second motor control assembly;
the first motor control assembly comprising a first inverter unit and a first rotor position detection unit; and
the second motor control assembly comprising a relay and a drive circuit;
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 internal sensor is disposed within the housing;
the external sensor is disposed outside of the housing;
each of the internal sensor and the external sensor sends a detected signal to the HVAC microprocessor via the signal processing circuit;
one of the centrifugal blower motor, the compressor motor, and the axial fan motor is a permanent magnet synchronous motor, and each of the remaining two of the centrifugal blower motor, the compressor motor, and the axial fan motor is an AC motor;
wherein the permanent magnet synchronous motor does not comprise a motor controller;
the HVAC system controller is spatially separated from the permanent magnet synchronous motor;
the HVAC microprocessor controls the AC motor via the relay and the drive circuit;
the HVAC microprocessor drives the permanent magnet synchronous motor via the first inverter unit;
the first rotor position detection unit is connected to the permanent magnet synchronous motor; and
the first rotor position detection unit is adapted to detect a rotor position signal of the permanent magnet synchronous motor, and to send the rotor position signal to the HVAC microprocessor.
1 Assignment
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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.
22 Citations
12 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, an internal sensor, an external sensor, a housing, an interface unit for motor control, a power supply part, and a signal processing circuit;
the interface unit for motor control comprising a first motor control assembly and a second motor control assembly;
the first motor control assembly comprising a first inverter unit and a first rotor position detection unit; and
the second motor control assembly comprising a relay and a drive circuit;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 internal sensor is disposed within the housing; the external sensor is disposed outside of the housing; each of the internal sensor and the external sensor sends a detected signal to the HVAC microprocessor via the signal processing circuit; one of the centrifugal blower motor, the compressor motor, and the axial fan motor is a permanent magnet synchronous motor, and each of the remaining two of the centrifugal blower motor, the compressor motor, and the axial fan motor is an AC motor;
wherein the permanent magnet synchronous motor does not comprise a motor controller;the HVAC system controller is spatially separated from the permanent magnet synchronous motor; the HVAC microprocessor controls the AC motor via the relay and the drive circuit; the HVAC microprocessor drives the permanent magnet synchronous motor via the first inverter unit; the first rotor position detection unit is connected to the permanent magnet synchronous motor; and the first rotor position detection unit is adapted to detect a rotor position signal of the permanent magnet synchronous motor, and to send the rotor position signal to the HVAC microprocessor. - View Dependent Claims (2, 3, 4, 9, 10)
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5. 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, an internal sensor, an external sensor, a housing, a first interface unit for motor control, a first power supply part, and a signal processing circuit;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;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 internal sensor is disposed within the housing; the external sensor is disposed outside of the housing; each of the internal sensor and the external 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; the first interface unit for motor control or the second interface unit for motor control comprises a first motor control assembly and a second motor control assembly;
the first motor control assembly comprises a first inverter unit and a first rotor position detection unit; and
the second motor control assembly comprises a relay and a drive circuit;one of the centrifugal blower motor, the compressor motor, and the axial fan motor is a permanent magnet synchronous motor, and each of the remaining two of the centrifugal blower motor, the compressor motor, and the axial fan motor is an AC motor;
wherein the permanent magnet synchronous motor does not comprise a motor controller;the first controller and the second controller are spatially separated from the permanent magnet synchronous motor; the first microprocessor or the second microprocessor controls the AC motor via the relay and the drive circuit; the first microprocessor or the second microprocessor drives the permanent magnet synchronous motor via the first inverter unit; the first rotor position detection unit is connected to the permanent magnet synchronous motor; and the first rotor position detection unit is adapted to detect a rotor position signal of the permanent magnet synchronous motor, and to send the rotor position signal to the first microprocessor or the second microprocessor. - View Dependent Claims (6, 7, 8, 11, 12)
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Specification