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As modern households increasingly demand intelligent, energy-efficient, and space-saving appliances, washer-dryer combo machines have become one of the fastest-growing segments in the home appliance industry. Compared with traditional standalone washing machines, integrated washing and drying systems require more stable motor performance, higher reliability, lower vibration, and improved thermal endurance due to their longer operating cycles and more complex working environments.
The customer is a home appliance manufacturer focused on mid-to-high-end washer-dryer combo products for the European and Southeast Asian markets. Their new generation washing and drying system required a compact AC motor capable of supporting both washing agitation and high-speed drying functions while maintaining excellent thermal stability and energy efficiency.The customer’s original motor solution encountered several operational limitations during long-duration drying cycles, especially under high humidity and elevated internal temperatures. Excessive vibration and insufficient heat resistance also affected the overall reliability of the appliance.
Unlike traditional washing machines, washer-dryer combo systems generate significantly more internal heat during drying cycles. The motor needed to maintain stable operation under continuous elevated temperatures without winding degradation or thermal overload.
The internal chamber temperature during drying could exceed:
This placed higher demands on insulation materials and heat dissipation performance.
During washing cycles, the motor operates in a humid environment with frequent exposure to water vapor and condensation. Poor sealing performance could lead to:
The customer required enhanced moisture resistance and long-term operational stability.
Washer-dryer systems operate in residential environments where low noise is extremely important. During high-speed spin cycles, motor imbalance and vibration could significantly affect user experience.
The motor therefore required:
The integrated appliance structure provided limited installation space for the motor assembly. The customer required a compact motor design while still maintaining sufficient torque output for both washing and drying operations.
BG Motor optimized the stator winding structure and magnetic circuit design to improve torque stability across different operating speeds.
Key improvements included:
The optimized winding arrangement also helped reduce electromagnetic noise during operation.
To withstand continuous drying cycles, the motor incorporated:
High-temperature resistant insulation materials
Upgraded Class E insulation system
Optimized airflow channels
Improved heat dissipation structure
These enhancements significantly reduced internal temperature rise during long-duration operation.
The motor housing and winding system were optimized for humid environments commonly found in washer-dryer applications.
Protection improvements included:
Anti-moisture coating
Reinforced insulation treatment
Corrosion-resistant components
Sealed bearing protection
These features improved long-term operational reliability under high humidity conditions.
BG Motor implemented dynamic rotor balancing and precision bearing alignment technology to reduce vibration during high-speed spin cycles.
Additional improvements included:
Precision-balanced rotor assembly
Low-noise bearing system
Optimized shaft concentricity
Reduced electromagnetic resonance
The final motor solution achieved stable low-noise operation suitable for modern household appliance standards
After prototype validation and mass production testing, the customer achieved significant improvements in overall appliance performance.
Motor temperature rise during drying cycles was reduced by approximately 18%.
Noise levels during high-speed spin operation were significantly reduced.
Motor operational life exceeded the customer’s original target requirements.
Optimized electromagnetic efficiency reduced overall power consumption.
Failure rates during continuous operation testing were substantially reduced.
The customer successfully integrated the motor into their next-generation washer-dryer product line for export markets.
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