Multi-air conditioner
First Claim
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1. An air conditioner comprising:
- a plurality of indoor units; and
at least one outdoor unit,wherein the outdoor unit includes an outdoor heat exchanger for condensing a coolant, a compressor for compressing a coolant evaporated by an indoor heat exchanger, an outdoor fan, and a control box including a control unit for controlling operations of the compressor and the outdoor fan,wherein the control unit which has a first block comprising a compressor inverter for controlling a compressor motor, a second block comprising a plurality of fan motor inverters for driving a plurality of fan motors, a third block comprising a system controller for controlling the operation of the outdoor unit, a fourth block comprising a filter for removing noise from input three-phase power, and a fifth block to which the input three-phase power is applied, the first, second, third, fourth and fifth blocks being mounted on different substrates,wherein the control box is disposed between the compressor and the outdoor fan, and the control box has a step difference so that the fourth block of the control unit is disposed below other blocks of the control unit,wherein the first block further comprises a power factor compensation (PFC) circuit which compensates the power factor of the input three-phase power,wherein the system controller controls the compressor inverter, the fan motor inverters, and the PFC circuit,wherein the system controller controls a first and a second fan motors of the plurality of fan motors at the same time.
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Abstract
An air conditioner is provided. A control unit of an outdoor unit of the air conditioner is divided into a plurality of blocks according to a set of rules. Then, the blocks are mounted on different substrates. Therefore, it is possible to simplify wiring, facilitating the interconnection of the blocks and enable the control unit to be managed in units of the blocks. In addition, it is possible to improve user convenience.
10 Citations
16 Claims
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1. An air conditioner comprising:
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a plurality of indoor units; and at least one outdoor unit, wherein the outdoor unit includes an outdoor heat exchanger for condensing a coolant, a compressor for compressing a coolant evaporated by an indoor heat exchanger, an outdoor fan, and a control box including a control unit for controlling operations of the compressor and the outdoor fan, wherein the control unit which has a first block comprising a compressor inverter for controlling a compressor motor, a second block comprising a plurality of fan motor inverters for driving a plurality of fan motors, a third block comprising a system controller for controlling the operation of the outdoor unit, a fourth block comprising a filter for removing noise from input three-phase power, and a fifth block to which the input three-phase power is applied, the first, second, third, fourth and fifth blocks being mounted on different substrates, wherein the control box is disposed between the compressor and the outdoor fan, and the control box has a step difference so that the fourth block of the control unit is disposed below other blocks of the control unit, wherein the first block further comprises a power factor compensation (PFC) circuit which compensates the power factor of the input three-phase power, wherein the system controller controls the compressor inverter, the fan motor inverters, and the PFC circuit, wherein the system controller controls a first and a second fan motors of the plurality of fan motors at the same time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An air conditioner comprising:
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a plurality of indoor units; and at least one outdoor unit, wherein the outdoor unit includes an outdoor heat exchanger for condensing a coolant, a compressor for compressing a coolant evaporated by an indoor heat exchanger, an outdoor fan, and a control box including a control unit for controlling operations of the compressor and the outdoor fan, wherein the control unit which controls the operation of the outdoor unit and comprises a PFC circuit that converts AC power provided by a commercial AC power source into DC power, a compressor inverter that drives a compressor motor by converting the DC power into AC power, the PFC circuit and the compressor inverter both being mounted on a first substrate, a plurality of one fan motor inverter which drives at least one fan motor by converting the DC power into AC power, the fan motor inverter being mounted on a second substrate, a system controller which controls the operation of the outdoor unit, the system controller being mounted on a third substrate, and a filter which removes noise between the commercial AC power source and the PFC circuit, the filter being mounted on a fourth substrate, wherein the control box is disposed between the compressor and the outdoor fan, and the control box has a step difference so that the fourth block of the control unit is disposed below other blocks of the control unit wherein the system controller controls the compressor inverter, the fan motor inverters, and the PFC circuit, wherein the system controller controls a first and a second fan motors of the plurality of fan motors at the same time. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification