Highly durable, certified parts engineered for maximum heat-exchange efficiency and system protection in demanding urban and commercial cooling grids.
The cooling infrastructure of Greater London is undergoing a major paradigm shift. Driven by the UK's commitment to net-zero greenhouse gas emissions by 2050, commercial facilities, residential properties, and massive data storage centers in London are retrofitting older, inefficient cooling systems. At the center of this transition are AC refrigerator motors, shaded pole motors, and high-performance evaporative fan systems.
Shaded pole motors are the foundational workhorse for low-starting-torque applications like residential refrigerators, display cabinets, and ventilation units across London's commercial districts. These motors offer unmatched mechanical reliability, low manufacturing costs, and long service lives. However, meeting modern UK EcoDesign directives requires manufacturers to transition these components to higher electrical efficiencies. Today, our advanced micro-motor and filter drier configurations are optimized to align with UK F-Gas regulations, enabling systems using low-GWP (Global Warming Potential) refrigerants like R290 (propane) and R600a (isobutane) to operate safely and at peak thermodynamic efficiency.
Ningbo Taojun Refrigeration Equipment Co., Ltd. is located in Xiangshan, Ningbo. Founded in 1988, our predecessor was the Xiangshan Refrigeration Accessories Factory of Zhejiang University. This foundational relationship with one of China's top academic institutions has sustained our culture of rigorous scientific research and engineering excellence for over three decades.
Our primary catalog features filter driers, check valves, air conditioning valves, condensers, brass and copper accessories, air conditioning cable ties, and specialized micro-motors. In 2021, Taojun was recognized as a National High-Tech Enterprise. We have built strong partnerships with leading domestic and global home appliance brands, including Haier, Xinfei, Midea, Gree, Whirlpool, Electrolux, and Huarui.
Over 38 years of research-driven milestones defining our transition from a local workshop to an international HVAC partner.
Exploring the thermodynamics of shaded pole motors and the mechanical role of molecular sieve copper filter driers in low-temperature HVAC units.
The single-phase shaded pole motor is characterized by its simple construction, high reliability, and low electromagnetic interference. Standard units utilize a copper ring (the shading coil) around a portion of each stator pole. This creates a delayed magnetic phase difference, generating the starting torque required to drive evaporative fan blades.
Our motors feature high-purity silicon steel laminations and class-F insulated copper windings, allowing stable thermal operation under continuous load. In demanding urban markets like London, these motors run continuously in sub-zero displays, commercial salad counters, and under-counter bar refrigerators.
Modern refrigeration compressors are highly sensitive to moisture, acid, and solid particulate contamination. Moisture in the system can freeze inside the expansion valve capillary tubes, blocking the refrigerant flow. Additionally, moisture reacts with synthetic POE/PAG oils to form hydrochloric or hydrofluoric acids, which corrode motor windings and lead to system failures.
TAOJUN copper filter driers are manufactured using deoxidized high-phosphorus copper (C12200) pipes to ensure resistance to rust and high pressure. The internal core features a high-capacity 3A molecular sieve (water absorption capacity ≥20%) combined with an activated carbon layer to filter organic acids and fine particulate matter. The entire assembly is sealed using precise argon arc welding, ensuring leak-free performance.
High-end manufacturing infrastructure, CCD visual inspection, and automated assembly guarantee consistent OEM/ODM output.
Automated Production Workshop
Precision Assembly Line
R&D Testing Laboratory
How our high-durability motors and copper HVAC fittings meet the unique requirements of London's commercial and industrial sectors.
Commercial kitchens in Soho, Covent Garden, and Canary Wharf operate under high heat and tight space constraints. Condenser fan motors must run continuously to prevent compressor failure. Our single-phase shaded pole motors are designed to withstand greasy, high-humidity environments. Integrated copper filter driers protect the system from moisture and acid build-up during peak kitchen service.
Under the London Plan's energy goals, property developers are shifting to air-source heat pumps. High-quality insulated copper tubing and double copper filter driers are essential to prevent moisture contamination in heat pump refrigerant lines. These components ensure the system remains reliable through cold London winters.
Taojun Refrigeration maintains an active quality control system. Our facility is certified under GB/T19001-2016 / ISO9001:2015 (Registration No.: 41325Q00065R0S). This certification covers the design and production of filter driers, condensers, and access valves. It is verified by China's CNCA and Zhongci International.
For UK and EU partners, our products fully comply with RoHS (Restriction of Hazardous Substances) and REACH regulations. This compliance ensures that all materials, including copper pipes, filter desiccants, and motor windings, are safe and environmentally friendly.
ISO 9001 Certificate
Scope of Certification
Decades of technical design and research collaboration define our manufacturing capabilities.
35+ years of R&D expertise with Zhejiang University collaboration, advancing fluid dynamics and electromagnetic motor efficiency.
±0.02mm aluminum foil tolerance, high-purity C12200 copper piping, and advanced automated winding systems.
100% compliant with RoHS, REACH, and WEEE directives, utilizing recyclable protective packaging.
Explore our complete range of high-efficiency shaded pole motors, copper filter driers, and charging valves designed for commercial and industrial refrigeration systems.
Our technical development strategy aligns with global emission standards and transitions systems to climate-safe operations.
As the HVAC/R industry continues to evolve, the traditional shaded pole motor is sharing the market with Electronically Commutated (EC) motors. EC motors utilize permanent magnets and integrated microchips to control stator current, achieving efficiency rates of up to 70%. Taojun Refrigeration is expanding its manufacturing facilities to produce hybrid EC micro-motors, offering a cost-effective, drop-in replacement option for London HVAC distributors.
At the same time, the transition to A3 flammability-class refrigerants like R290 requires spark-free electrical components. Our R&D division is focused on designing sealed-stator micro-motors and robust pressure-relief valves. These components ensure safe operation, protecting commercial refrigeration systems in high-density urban environments.
Answers to common engineering and distribution questions for procurement managers in the UK and global markets.
From custom single-phase motors to high-purity copper filter driers, Taojun Refrigeration delivers certified performance, reliability, and precision manufacturing support to partners in London and worldwide.
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