Choose an air conditioner condenser tube with more than 2 rows. The heavier the air conditioner, the better (stacking material), and you need an air conditioner with electronic expansion valve .
electronic expansion valve performance: Bu Er Gong Machine ≈ Jigong＞ Sanhua＞ Dun'an (price reversed)
electronic expansion valve can use Sanhua.
four-way valve performance: 小平＞Sanhua＞Dunan (price reversed)
compressor performance: Japanese import＞Joint venture＞domestic
2. How to choose air conditioner match number ?
low frequency performance is good, such as Dajin , Toshiba , Fujitsu , and Midea brands of air conditioners can choose smaller houses with larger air conditioners, because they rarely shut down at low frequency and consume low power and have poor low frequency performance (except for the above brands) it is recommended to select the number of matches according to the table, because their small houses with large air conditioners will shut down, which will lead to increased humidity, increased noise and odor.
3. Introduction to air conditioner brand
Domestic:
Midea: Midea air conditioner In addition to the headquarters in Shunde, Guangdong, Midea air conditioner has a production and manufacturing base in Guangzhou, Wuhu , Wuhan, Handan , and Chongqing. The products are well-sold in more than 150 countries and regions around the world, and are exported first for 7 consecutive years. The two core components of Midea Air Conditioning use GMCC Meizhi compressor and Weiling Motor, both of which are the world's largest air conditioning compressor company and motor company under Midea Group . On July 14, 2020, the 21st China Patent Award results released by National Intellectual Property Office, Midea Air Conditioner's variable frequency air conditioning compressor technology won the "China Patent Gold Award". According to various masters, the performance of the compressor is stronger than that of Lingda, , Haili , and Ruizhi. Toshiba Kaili transferred frequency conversion technology to Midea. Midea has developed for many years on this basis. Since then, it has mastered the "core technology" of variable frequency conversion . The ECO mode only needs one kilowatt-hour of electricity per night.
Gree : Founded in 1991, Zhuhai Gree Electric Co., Ltd. is a professional air conditioning enterprise integrating R&D, production, sales and service. In 2012, the total operating income was 100.11 billion yuan, a year-on-year increase of 19.87%; the net profit was 7.38 billion yuan, a year-on-year increase of 40.92%, becoming a professional home appliance company with a capacity of 100 billion yuan. A series of "international leading" products independently developed ultra-low temperature digital multi-unit units, high-efficiency DC frequency conversion centrifugal chiller, multi-functional floor heating household central air conditioner, 1 Hz frequency conversion air conditioner, R290 environmentally friendly refrigerant air conditioner, ultra-efficient fixed-speed compressor, etc., have filled the industry gap. "Gree air conditioners, Gree made "Gree masters core technology" These advertising slogans are popular. In the past, Gree air conditioner has sufficient materials and good quality. It has a very good reputation among middle-aged and elderly people. However, in the era of frequency conversion, it was surpassed by Midea to become the second in the market. Its reduction of distribution and price reduction has also been criticized.
Haier : Haier Air Conditioning was founded in 1985. After 37 years of development, it has become a leader in China's air conditioning industry. In June 2013, the Global Home Appliance Market Survey and Research Index released by the World Influence Organization listed Haier Air Conditioner as the "World Famous Brand". Haier Air Conditioning has become the only air conditioning brand in China that has been recognized by the organization as a "world-famous brand product". Haier Group, affiliated to Haier Air Conditioner, is the world's first manufacturer of white appliances and the most valuable brand in China.
data comes from China Business Intelligence Network
You can see that Midea, Gree and Haier occupy most of the domestic market.
Foreign:
Panasonic : Panasonic Air Conditioning is an air conditioning brand affiliated to Panasonic Electrical Industry Co., Ltd., and its founder is Mr. Konosuke, a Matsushita Electrical Appliances Industry Co., Ltd., known as the "God of Business". Since its founding in 1957, Panasonic air conditioning has become an air conditioning brand with wide popularity and reputation in the world. Panasonic Air Conditioner has three major production bases around the world: Japan's Kusatsu Panasonic Air Conditioner Business Headquarters, Malaysia Panasonic Air Conditioner Co., Ltd. and Guangzhou Panasonic Air Conditioner Co., Ltd. .
Panasonic air conditioner features: strong fast cooling, Nanoyi, Panasonic heat storage technology
strong fast cooling: the air outlet reaches 17℃ in one minute under cooling conditions, and the air outlet reaches 40℃ in 5 minutes under heating conditions
Nanoyi: This function can operate independently, the principle is the same as negative ion air purifier
Panasonic heat storage technology: black technology, collecting the compressor waste heat storage and external unit plus electric heating auxiliary device to ensure ultra-low temperature start and defrost will not stop. Panasonic once conducted an experiment in Northeast China in winter using Panasonic VE to set 27 degrees to successfully hatch chicks.
Dajin: Since its founding in 1924, Dajin Group has been growing and developing, becoming a multinational enterprise active in various fields such as air conditioning, refrigeration, fluorochemistry, electronics, and hydraulic machinery. Especially in air conditioning and refrigeration, there are as many as 5,000 types of products. It is a multinational enterprise integrating the research, development, production and sales of air conditioning, refrigerant and compressors in the world.
Dajin Featured Functions: Swing Compressor
Swing Compressor: Good low frequency performance and low noise
Mitsubishi Electric : Mitsubishi Electric Co., Ltd., referred to as Mitsubishi Electric. Founded on January 15, 1921, the business scope covers the heavy power system department, the industrial electromechanical department, the information and communication system department, the electronic equipment department, the home appliance department and other departments.
Mitsubishi Electric Automation (China) Co., Ltd. is a wholly-owned subsidiary of Mitsubishi Electric Co., Ltd. in China, and is included in its business in China. Mitsubishi Electric China is committed to creating more value for Chinese users. It not only provides advanced products and technologies, but also constantly innovates, quickly and accurately grasps market trends, and provides comprehensive solutions that meet customer needs. As a comprehensive supplier of electromechanical products, Mitsubishi Electric Automation covers industrial automation (FA) products and mechatronics (Mechatronics) products. FA products include programmable controller (PLCh), frequency converter (INV), human-machine interface (HMI), motion control and AC servo system (Motion Controller&Servo), motor (Motor) and reducer (Gear Motor), etc. Mechatronics products include CNC system (CNC), discharge processing machine (EDM), laser processing machine (LP), etc.
Mitsubishi Electric Features: Keel motor, Full-Domain Intelligent Eye
Keel motor: Make the air conditioner compressor more stable and has stronger performance, the cost is the increase in noise and poor low-frequency performance
Full-Domain Intelligent Eye: The infrared probe loaded on the air conditioner realizes intelligent partition air supply, which is more power-saving, the cost is the noise operation of the infrared motor, which is not suitable for bedroom loading
Hitahi :Hitahi, ranks among the top 500 in the world, ranks in the top 10 in the world, has strong scientific and technological strength in high-end industries such as mechanical manufacturing, integrated circuits, circuit electronics, nuclear energy, magnetic levitation trains, etc. For a long time, Hitachi air conditioning system has taken technological progress and technological leadership as its mission, and has been constantly innovating to meet the ever-changing changes in society.
Hitachi special features: scroll compressor , Hitachi unique defrost technology
scroll compressor: makes the compressor more reliable and has lower noise
Hitachi unique defrost technology: divide the refrigerant pipe into two during heating, and run the heating at the same time during normal heating. Defrost is one pipe that stops heating and stops heating and other pipes that are normal heating.
Fujitsu: Fujitsu air conditioners have entered the Chinese market very late, and most people have never heard of him. But in fact, Fujitsu air conditioners are the sixth largest air conditioner brand in Japan. Their products are synchronized with Japanese, European and American models, and they have not castrated against China.
Fujitsu special features: frequency conversion technology, banknote capability (cost-performance ratio)
frequency conversion technology: Fujitsu is Japan's largest semiconductor company. After cooperating with Toshiba, the frequency conversion technology developed is very strong. It is the first echelon of Japanese
banknote capability: Fujitsu air conditioners are extremely cost-effective and willing to pile up materials. If you don't know what to buy at the same price, it will be done. It may not be the highest, but there will definitely be no problems.
