Introducion

On October 27-29, the 22nd China Household Appliance Technology Conference with the theme of "AI, Green, Health, and New Materials" for household appliances hosted by the China Household Appliance Association was held in Ningbo, Zhejiang Province. The technical team of Highly Electric Appliances participated in the conference with four papers, and two achievements stood out from many papers participating in the evaluation, winning the "Excellent Paper Award" of the conference. During the conference, Mr. Zhou Yi, the chief technology officer of Highly Group, was invited to give a keynote speech at the technical exchange meeting of lubricating grease for household appliances.

01 Chief Technology Officer shares and discusses the challenges of compressor lubrication technology

Lubrication technology directly affects the energy efficiency and operational reliability of compressors. At the technical exchange meeting of lubricating grease for household appliances held at the same time of the conference, Zhou Yi, chief technology officer of Highly Group, shared a special report on "challenges and coping strategies of rotor compressor lubrication technology". He first summarized the core issues to be tackled in this field, including oil circulation rate control under high-speed operating conditions, reducing the amount of sealed oil, optimizing the oil seal effect of low-speed pump bodies, design optimization and material selection under high temperature, high speed and heavy load, cost control, etc; Then it introduced the practical exploration of Highly Electric in the direction of lubrication technology, and independently built a visual evaluation test platform for compressor lubrication. Through oil level mirror observation, real-time monitoring of dual point oil viscometer, high-speed camera recording and other means, it provided an intuitive evaluation means for lubrication problem research.

02 Two papers were awarded as excellent for their in-depth research on the core mechanism of compressors

The two award-winning achievements have both achieved mechanism breakthroughs with industry guidance value. Firstly, starting from practical engineering cases, this paper reveals the deep mechanism of the counterintuitive phenomenon of the exhaust temperature not rising but falling instead of "reversing" and dropping by 12 ℃ under the condition of compressor oil shortage. It breaks the traditional understanding of abnormal exhaust temperature in the industry and provides important engineering basis for the control of oil filling and refrigerant filling design of R290 and other combustible refrigerant systems. The paper was presented on-site at the conference's air conditioning session; Another achievement is based on the core business of rotary compressors. In response to the pain point of insufficient prediction accuracy of traditional pure mechanism models under wide operating conditions, innovative data-driven methods are integrated into mechanism modeling to construct a semi physical fusion prediction framework. This significantly improves the prediction accuracy and adaptability of exhaust temperature under variable operating conditions, providing theoretical support for intelligent control and reliability warning of compressors.

As a core component supplier in the field of rotary compressors, Highly Electric has long insisted on paying equal attention to product development and basic research, continuously increasing investment in mechanism research, and deepening industry university research cooperation. This time, four papers were selected into the conference proceedings, and two were awarded excellent papers, which is the authoritative recognition of Highly's R&D strength by the industry academia. In the future, the company will continue to deepen basic research and cutting-edge exploration, drive product upgrades with theoretical innovation, and inject lasting momentum into the green and high-quality development of the home appliance industry.