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May. 30, 2025
On December 23, 2024, two technical achievements led by Guangdong Macro Gas Appliance Co., Ltd., "Research and Application of Key Technologies for Energy Saving and Comfort of Zero Cold Water Gas Water Heaters" and "Research and Application of Key Technologies for Ultra-low Voltage Full DC Gas Water Heaters", successfully passed the international leading technology appraisal.
The appraisal meeting was hosted by the China Light Industry Federation and participated by the appraisal committee composed of experts and scholars from the China Hardware Products Association, China Daily Hardware Technology Development Center, National Gas Appliance Product Quality Inspection and Testing Center (Foshan), Jianheng National Quality (Guangdong) Testing and Certification Center Co., Ltd., Zhejiang Fangyuan Testing Group Co., Ltd., Chongqing University, and Xi'an Jiaotong University. After project reports, watching technology application videos, expert questioning, expert reviews and other links, both achievements have reached the international leading level.
Zero cold water gas water heaters can preheat the water in the pipes in advance. When users turn on the hot water tap, hot water will flow out immediately, solving the problem of waiting for bathing with ordinary gas water heaters. With the popularity of zero cold water gas water heaters in recent years, user needs have gradually shifted from basic instant heating needs to more constant temperature, large water volume bathing, energy saving, and intelligent needs. At present, there are pain points such as insufficient preheating, excessive preheating, inconvenient operation, and energy waste in the use of zero cold water gas water heaters on the market. In response to these pain points, the "Research and Application of Key Technologies for Energy Saving and Comfort of Zero Cold Water Gas Water Heaters" project pioneered zero cold water preheating adaptive technology and proposed an intelligent model that can set a reasonable preheating time according to the user environment. It realizes the intelligent correction of preheating time when the external temperature changes, saves a single preheating gas, and reduces the preheating time. The multi-scenario constant water volume technology was invented to solve the problem of sudden drop in water volume when using water at multiple points at the same time during showering. The instantaneous coupling valve structure of the zero cold water system was invented, and the zero cold water was quickly upgraded and transformed, which greatly shortened the waiting time for hot water after preheating.
DC technology has outstanding performance in improving energy efficiency and reducing conversion losses, and plays an important role in achieving zero carbon emissions in buildings. At present, my country has successively developed high-efficiency household appliances such as DC air conditioners and refrigerators. The DCization of gas water heaters indicates the improvement of product energy efficiency and environmentally friendly development prospects, which will help promote homes and buildings towards a green and low-carbon future. The "Research and Application of Key Technologies for Ultra-Low Voltage Full DC for Gas Water Heaters" project pioneered the full-scenario safety technology for ultra-low voltage gas water heaters, innovatively adopted an integrated safety power supply design, and improved the electrical safety of gas water heaters. By applying the full DC high-efficiency direct drive technology for gas water heaters, optimizing the structure of servo devices, and coordinating current vector control, the product's electromagnetic radiation and signal interference are reduced. The bottom-level direct drive architecture design is adopted to reduce the water heater's electrical power consumption. The AI electric power intelligent distribution technology has been innovatively developed. Through DC flexible control, the thermal efficiency of the gas water heater at half load has been improved; through the intelligent power distribution mechanism, the wind pressure resistance and dynamic wind resistance and constant temperature capabilities have been improved, and the environmental adaptability of the product has been enhanced.
In the future, Macro will continue to adhere to the strategic axis of "leading in technology", be user-oriented, promote technological innovation and product upgrades, effectively solve the pain points of water heater use for consumers, and meet the high-quality requirements of every user for a more comfortable, more humane and more intelligent life.
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Contacts
About Macro: +86 0757 2281 3639
E-Mail: trade@macro-appliance.com
Add.: Shunyuan South Road #9, Wusha Community, Daliang Street, Foshan City, Guangdong Province, P.R.China
