About the air-conditioning £'≈motor maintenance method
Date：May 17th,2023
Types of motor: air condit§φ♦✔ioner compressor, fan and other £↑§×devices are using motor drive, small hou♦♣ ≥sehold window air conditioner and sp÷↔×≤lit air conditioner use singl≥δ±±e-phase asynchronous motor, larger c'δ≤apacity cabinet air conditioner use three-p™>₩hase asynchronous motor, swing device and e₩>←lectronic expansion valve using more miniatu'÷§∞re synchronous motor or ste€pping motor drive. The motor used in the &¥≤₹air conditioner can be divided into air guide moλ₹tor, compressor motor and indoor / outdoor fan∞ motor.
1. Wind guide motor
Wind guide motor is also k∏₹nown as swing leaf motor, i∞ λt can swing back and forth to automaticall✔∑y export the cold air blown out by th×δe indoor fan, realizing large Angle " and multi-direction air supply. Wind g uide motor is divided into pulse step motor andπ★" synchronous motor.
Pulse stepping motor workinα♣g principle: pulse stepping mot§λor control system consists of stepping ₽↓€≤motor controller, stepping motor driver, step'σπping motor three parts, stepping motor co♣©'ntroller is the command ce $$$nter, it signal pulse to stepping motor driver σ, and stepping motor drive receδ ived signal pulse pulse into electric pu ≤lse, drive stepping motor rotationβΩ, controller each a signal pulse, stepping ≤₩♦motor rotate an Angle, its r←'§otation is a fixed Angle step by step. Th£♠φ÷e controller can control the ro£₽≤tation angle of the stepping motor byφ← controlling the number of pulses.×γ The rotation speed of the stepping motor is prec&≠isely controlled by controlling the pulse frequ☆✔♠πency.
Features of the pulse steppin®g motor: 1. The system control inertia is smal÷λl, high speed.
2. Accurate output pulse.
3. Strong real-time performance.
4. Good anti-electromagnetic chara♣✔∞cteristics, strong anti-interferenc'₩↑₽e ability.
(2) Working principle of synchronous wind×♠↕ guide motor: when the synchronou₽←s motor works, the three-phase wi≥nding of the stator enters into the thr∑✔₽¶ee relative current, and the excit♦↔ation winding of the rotor☆₹≈" flows into the DC current. A rotating magn≤ε×↑etic field is generated in the air ga≥©p in the stator three winding. A stationary magneαtic field with a constant ↔€polarity. If the pole loga€ ♥rithm of the rotor magnetic field is ₩↔equal to the pole logarithm of the stator &δ☆magnetic field, the rotor magnetic field✔≈← rotates with the stator rotating magn★etic field due to the magnetic ten$•©sion of the stator magnetic field, that is, the r↓αotor rotates with the speed and ₹✔βdirection equivalent to the rotating m"β"♣agnetic field, which is the basic working pr≤¥'↔inciple of the synchronous motor.
2. Compressor electric motor
Compressor motor must have high temper¶ ©€ature resistance, large start torque, can adapt t↔♣₽o the fluctuation of power supply vβγoltage, shock, vibration, refβ↓¥rigerant and oil erosion resistance. The cλ<♣ommonly used compressor motor has sinσ♥©gle-phase asynchronous motor and asy×™nchronous frequency conversion speed control moto¥r.
① Working principle of single-phase asynchro¶δεnous motor: the single-phase asynchronousγ>λ motor is a rotating motor pow♠÷ered by single-phase AC power supply, and its ₹ stator winding is single-phas£>↕ e. When the single phase alternating cu☆☆δrrent is connected, it will produce an a ✘αlternating pulsating magnetic field in&£₹ε the air gap of the fixed rotor, so theε∑ single phase asynchronous motor cann♦πγot start itself. In the AC mα₩otor, when the stator winding passes thr∑ ough the AC current, the armature magneti¶₩c motive potential is established, which hasε$₹ a great influence on the energy cδ'π&onversion and operation performance of the motor'←♠. Therefore, the single-phase AC winding ✔↕©≠flows into the single-phase AC to gen" erate the pulse magnetic electromotive potentγ♣ial, which can be decomposed int£β₹o two equal amplitude and oppos±₹₩ite speed, so as to establish the forward←≥♠ and reverse magnetic field s↕¶€um in the air gap. The two rotat ✘↔ing magnetic fields cut the roto∑δr conductor and are separa≤™tely in the rotor
1. Wind guide motor
Wind guide motor is also k∏₹nown as swing leaf motor, i∞ λt can swing back and forth to automaticall✔∑y export the cold air blown out by th×δe indoor fan, realizing large Angle " and multi-direction air supply. Wind g uide motor is divided into pulse step motor andπ★" synchronous motor.
Pulse stepping motor workinα♣g principle: pulse stepping mot§λor control system consists of stepping ₽↓€≤motor controller, stepping motor driver, step'σπping motor three parts, stepping motor co♣©'ntroller is the command ce $$$nter, it signal pulse to stepping motor driver σ, and stepping motor drive receδ ived signal pulse pulse into electric pu ≤lse, drive stepping motor rotationβΩ, controller each a signal pulse, stepping ≤₩♦motor rotate an Angle, its r←'§otation is a fixed Angle step by step. Th£♠φ÷e controller can control the ro£₽≤tation angle of the stepping motor byφ← controlling the number of pulses.×γ The rotation speed of the stepping motor is prec&≠isely controlled by controlling the pulse frequ☆✔♠πency.
Features of the pulse steppin®g motor: 1. The system control inertia is smal÷λl, high speed.
2. Accurate output pulse.
3. Strong real-time performance.
4. Good anti-electromagnetic chara♣✔∞cteristics, strong anti-interferenc'₩↑₽e ability.
(2) Working principle of synchronous wind×♠↕ guide motor: when the synchronou₽←s motor works, the three-phase wi≥nding of the stator enters into the thr∑✔₽¶ee relative current, and the excit♦↔ation winding of the rotor☆₹≈" flows into the DC current. A rotating magn≤ε×↑etic field is generated in the air ga≥©p in the stator three winding. A stationary magneαtic field with a constant ↔€polarity. If the pole loga€ ♥rithm of the rotor magnetic field is ₩↔equal to the pole logarithm of the stator &δ☆magnetic field, the rotor magnetic field✔≈← rotates with the stator rotating magn★etic field due to the magnetic ten$•©sion of the stator magnetic field, that is, the r↓αotor rotates with the speed and ₹✔βdirection equivalent to the rotating m"β"♣agnetic field, which is the basic working pr≤¥'↔inciple of the synchronous motor.
2. Compressor electric motor
Compressor motor must have high temper¶ ©€ature resistance, large start torque, can adapt t↔♣₽o the fluctuation of power supply vβγoltage, shock, vibration, refβ↓¥rigerant and oil erosion resistance. The cλ<♣ommonly used compressor motor has sinσ♥©gle-phase asynchronous motor and asy×™nchronous frequency conversion speed control moto¥r.
① Working principle of single-phase asynchro¶δεnous motor: the single-phase asynchronousγ>λ motor is a rotating motor pow♠÷ered by single-phase AC power supply, and its ₹ stator winding is single-phas£>↕ e. When the single phase alternating cu☆☆δrrent is connected, it will produce an a ✘αlternating pulsating magnetic field in&£₹ε the air gap of the fixed rotor, so theε∑ single phase asynchronous motor cann♦πγot start itself. In the AC mα₩otor, when the stator winding passes thr∑ ough the AC current, the armature magneti¶₩c motive potential is established, which hasε$₹ a great influence on the energy cδ'π&onversion and operation performance of the motor'←♠. Therefore, the single-phase AC winding ✔↕©≠flows into the single-phase AC to gen" erate the pulse magnetic electromotive potentγ♣ial, which can be decomposed int£β₹o two equal amplitude and oppos±₹₩ite speed, so as to establish the forward←≥♠ and reverse magnetic field s↕¶€um in the air gap. The two rotat ✘↔ing magnetic fields cut the roto∑δr conductor and are separa≤™tely in the rotor