Heat Pump System Motor

-- Steady & Reliable Manufacturer --

The Imperative: Delivering High-Reliability and Variable Speed Performance Across Both Heating and Cooling Modes

The Heat Pump System Motor refers to a specialized category of fan motors used in Air Source Heat Pumps (ASHP), which are characterized by their reversible refrigerant cycle (heating in winter, cooling in summer). These motors, primarily High-Efficiency BLDC/EC Inverter types, must meet two crucial, and often conflicting, demands: reliable operation in extreme cold (defrost mode) and optimized efficiency in high heat (cooling mode). We supply motor solutions for both the outdoor unit (axial fan for heat exchange) and the indoor unit (blower fan for air distribution), all engineered for peak performance in dual-cycle operation.

The outdoor motor is subject to the harshest conditions. Our designs feature superior IP ratings (IP55/IP66), specialized low-temperature lubricants, and the ability to run in reverse direction at low speed for efficient defrosting of the outdoor coil without excessive power consumption. The BLDC control is critical here, allowing precise speed control to manage the heat rejection/absorption process, which directly determines the unit's Coefficient of Performance (COP) in heating mode and SEER in cooling mode.

The indoor blower motor must be capable of smoothly delivering high-volume air for effective heating (which typically requires more CFM than cooling) while maintaining silent operation. Our indoor BLDC motors feature advanced FOC control, eliminating the acoustic defects of older AC motors and providing the precision necessary to deliver variable air volume requested by the heat pump's controller. This combined system efficiency is essential for modern, high-tier heat pump technology, which is the cornerstone of sustainable building design globally.

We ensure seamless integration between our outdoor and indoor motor control logic and the central heat pump controller. Our products are rigorously tested to withstand rapid thermal cycling and continuous high-load operation, a necessary feature due to the 24/7 nature of heating in colder climates. By incorporating our specialized Heat Pump System Motors, manufacturers guarantee the highest possible efficiency and year-round reliability for their advanced heat pump product lines.

Key Product Strengths:

  • Dual-Cycle Optimization: High efficiency maintained across both heating (high CFM) and cooling (low CFM) demands.
  • Low-Temperature Reliability: Utilizes specialized components and lubricants for guaranteed startup and performance in sub-zero conditions.
  • IP66 Outdoor Protection: Fully sealed and corrosion-resistant construction for all-weather durability, a necessity for the outdoor unit.
  • Defrost Capability: Outdoor axial motors are dynamically stable for smooth reverse-direction operation during the defrost cycle.
  • High COP/SEER Enabling: Variable speed control is crucial for maximizing the system's seasonal energy ratings.

For customized motor solutions that maximize the COP and efficiency of your air source heat pumps, please engage our heat pump application engineering team.

Key Technical Specifications

Parameter Details / Type
Motor Technology BLDC/EC (Inverter) for both Indoor and Outdoor
Outdoor IP Rating IP55 to IP66
Operational Feature Reverse Rotation (Outdoor Defrost)
Efficiency Focus COP (Heating) and SEER (Cooling) Maximization
Indoor Fan Type Cross-Flow or Centrifugal Blower
Outdoor Temp. Range −30∘C to 55∘C
Control Interface Digital/PWM Communication with Main Board

Core Competitive Advantages

  • Integrated Anti-Icing: Motor materials and coatings are selected to resist ice buildup and moisture ingress during defrost cycles.
  • High Energy Density: Compact motor size delivers high power output, allowing for smaller, lighter outdoor units.
  • Fast Thermal Response: Quick motor response to controller commands helps stabilize the refrigerant cycle rapidly during mode changes (e.g., cool to heat).
  • Voltage Fluctuation Tolerance: Robust power electronics handle the load variations inherent in variable-speed compressor systems.

Installation & Stability Guide

  • Typical Installation: Motors are positioned to move air across the heat exchanger coils. Critical Step: Ensure the outdoor motor wiring and controller are fully shielded and sealed against the ingress of water and ice during winter operation.
  • Scenario Optimization: Essential for minimizing auxiliary heat reliance in cold climates, maximizing the system's energy savings throughout the year.
  • Visual Demonstration: Schematic showing the two motors (indoor blower and outdoor axial) operating in tandem during the heating cycle.

Applications & Target Systems

About Us
Shengzhou Tianyi Electric Appliance Co., Ltd.
Shengzhou Tianyi Electric Appliance Co., Ltd. was established in 1993 and has been professionally engaged in researching, developing and selling household electrical motors for over 30 years. Tianyi Electric Appliance is China Heat Pump System Motor Manufacturers and Custom Heat Pump System Motor Factory .Our company offers services covering design and development to production and assembly. We provide professional solutions to customers's motor problems.
Our factory is located in Shengzhou city which is famous for the production base of motors with complete industrial chains. The city enjoys convenient transportation: east from Ningbo about 100 kilometers, west from YiWu about 60 kilometers, north from Hangzhou about 120 kilometers.
With about 200 staff now, more than 50 personnel are of intermediate titles in management and research and development. Owning fixed assets of RMB 100 million, the factory covers an area of 25,000 square meters, with a building area of 20,000 square meters. Besides, Shengzhou Yijin Trading Co., Ltd. and Shengzhou Dinghui Trading Co., LTD are the two subsidiary companies. At present, The main products of our company include household washing machine motors, household air-conditioner motors, range hood motors, fan motors ventilator motors, etc. The annual production capacity of the factory is more than 10 million motors, and we keep a good relationship with some famous enterprises such as ZhejiangXiabao, KoreaElectric Groupp, Artel Group, SUNG HWA TECH.Co., Ltd. Kumkanggreenfan Co., Ltd., etc.
Our company has passed the ISO9001 quality management system and obtained product certifications like CCC and CE.
Shengzhou Tianyi Motor will devote itself to Research Development, and innovation, and we will try our best to provide the best products and solutions for customers with the best service.
In 2023, 12 million household motors were produced, and the total number of washing machine motors was 8 million, range hood motors 1.5 million, fan motors 1 million, ventilator motors 1 million, and on and electric motaccessoriesory half a million.
Enterprise honor
In several years of research and development, we paid our sweat to a lot of honors, which also confirmed the efforts we made When look forward, New targets and new challenges are waiting for us, and we are fully prepared!
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