Lingdian is fascinated by air-conditioning-the representative country of children's air-conditioning level in the world is Japan, and the representative product of Japanese air-conditioning, mitsubishi electric must be one of the best! Mr. Tong, the first generation compressor expert in New China and the chief engineer of mitsubishi electric (China) Company, said so! Maybe it's the threshold of price. In the memory of ordinary consumers, the popularity of air conditioners in mitsubishi electric is far less than that of domestic brands. However, mitsubishi electric, with a history of 60 years, refuses all temptations, but is immersed in the continuous progress of technology! Tong, the chief engineer of mitsubishi electric (China) Company, once worked in the earliest air-conditioning factory in China? Shanghai Air Conditioning Machinery Factory served as the deputy director, and then went to the General Machinery Research Institute to study some very useful air conditioners! Joined Shang Ling Refrigerator Factory, the predecessor of mitsubishi electric Cooperation, from 1992, and served as the chief engineer of mitsubishi electric from 1996! Graduated from Xi Jiaotong University, majoring in compressors for 40 years, and deputy director of refrigeration appliances Branch of National Household Appliance Standardization Technical Committee! It takes 24 months to develop a new air conditioner and 24 months to develop a new product. For many air-conditioning manufacturers, the time seems a bit long! But mitsubishi electric refused to shorten the time and arranged these 24 months to the brim! What is the process of designing new products in mitsubishi electric? Tong Sheng Xing, a 63-year-old chief engineer, said slowly: These 24 months are divided into two stages! The first stage is the first 12 months, mainly focusing on market research, product conception and planning! In this process, we should understand the requirements and feedback of market users on air conditioning, investigate the trends of countries around the world and so on! And all this, all abroad, by world-class air conditioning experts to participate in the investigation! Then, we must conceive new products! Energy consumption, noise and appearance design are the key design elements at this stage! In particular, the appearance design of air conditioners should not be considered as a rectangular shell, and the length and width should be patented. In terms of intellectual property protection, even minor changes should be considered! Mitsubishi electric's design department is in Yokohama, Japan, and all the designs in mitsubishi electric come from here! The second stage is the last 12 months! Most of the work at this stage has been taken back to China and completed! There are usually several versions of the design, and these renderings must be evaluated by four people first! They are consumers, manufacturers, technical designers and appearance designers! According to your opinions, a physical model of 1: 1 needs to be made after the appearance is partially modified! Then we will compare the figures of various details of the domestic simulation model with those stored in the Japanese computer, and then we will enter the mold opening stage! Mold opening is a complicated stage! Not only the manufacturing process of the mold is better, but also the reputation of the mold manufacturer is better. The mold cannot be sold to others! Mitsubishi electric took great pains to keep the mold secret! The process of mold opening will go through three stages, which will last for more than 6 weeks! The first stage is the first test of the model made according to the mold, and all the problems encountered should be answered one by one! The second stage is to solve all the problems in the first stage, then re-open the mold to make a prototype, then find the problems, and then modify the mold again! The third stage is the third test prototype! This trial, the change will not be too big! Then produce about 50 prototypes, and pass the national 3C certification and energy-saving certification! Production of 50 sets, because the national certification requirements are 50 sets to try! After passing the above certification, mitsubishi electric began to conduct internal full performance testing! From the production of process molds to the details of air conditioning equipment, it is the focus of testing! Such a test always takes a month or two to complete! After the test, slightly modify the mold according to the requirements of mass production process for mass production! Twenty-four months have passed in full swing! Mitsubishi electric follows not only the national standards, but also the standards of mitsubishi electric, which is far higher than the requirements of the national standards! It takes five to seven years to develop a technological achievement. Not long ago, mitsubishi electric introduced a new technical concept? Double-lever brake! Usually a person is always at a fixed temperature, and the skin surface will be numb! For example, when you suddenly walk into the air conditioner on a hot day, you feel comfortable for the first half hour, but you feel numb after half an hour. The feeling of heat still exists, but you are not sensitive to the feeling of cold. If you continue to cool down, you will feel cold! And the "parallel bars brake" is designed for this kind of problem! This kind of air conditioner, instead of lowering the temperature, raises the usual indoor temperature from 24 degrees to 26 degrees, and the temperature goes up, but in about 10 minutes, a cold wind blows in the air conditioner, keeping people's skin awake all the time, so that people won't feel hot! It can not only save energy by 20%, but also effectively prevent the air conditioner from cracking. Hey? What about leeches? Let the dew carve it? 1 degree will save electricity 10%! This technology, which looks very advanced today, is actually the scientific research achievement of Japanese research department, and it was studied as early as 5-7 years ago! Mitsubishi electric is relying on these advanced scientific research projects to keep its high-end first-class air conditioners forever! Mitsubishi has a world-class air conditioning laboratory and invested 8.5 million RMB to build a 6-sided sound absorption and noise measurement room, which is a unique product in China! The pressure test room under construction is the world's cutting-edge technology! Just like the shell of Buick, children tell us that the key to buying air conditioning function is energy saving, refrigeration capacity, air volume, wind speed, humidity, temperature, noise, comfort and service life. Now some air-conditioning products exaggerate the additional functions unilaterally and forget the requirements for the basic functions of air-conditioning! The key to ensure the quality and life of air conditioners must be technology and raw materials! For example, every air conditioner terminal has this device, and all 220V wires are concentrated here! Tong Lao said that the wiring board in mitsubishi electric won't be deformed if it burns red in the briquette furnace. The quality is absolutely first-class, but the price is three times more expensive than ordinary wiring boards! There are also copper pipes in the air conditioner, and the quality requirements are also very high! If the quality of the copper tube is not good, it is easy to burst and the air conditioner leaks, which is mostly caused by this reason! To solve this problem, mitsubishi electric has a whole machine pressure test! Originally, this test can only be tested in a general factory in mitsubishi electric. Recently, Shanghai has also introduced this set of equipment, so it is not necessary to send the prototype to Japan for testing every time! The so-called stress is the force that each copper tube can bear. Tong Lao once saw the stress test of new products in Japan! The new product is fixed on the instrument and the instrument is started. The amplitude reaches 12mm, and the stress value exceeds the standard by more than ten times! If you leave the factory like this, the copper tube will break in a few days, because the violent vibration will greatly affect the service life of the copper tube! So the technician added a black resistor to the copper tube to change the vibration frequency, that is, to change the natural frequency. In this way, the copper tube hardly vibrates, the noise is the smallest, the stress value is the smallest, and it is completely up to standard! The small black patches on the copper tubes in mitsubishi electric are used for shock absorption! I didn't expect mitsubishi electric's chassis shell to use the same steel plate as Buick! Tong Lao said that because heat dissipation and zinc layer are more important, and the surface is coated with a deep protective layer, it can be used for more than 10 years, reaching 24,000 hours of work!