1500 experiments create a "clean" and "quiet" kitchen experience

In the 1980s, since the range hood entered China, its cumbersome figure and the noise of “嗡嗡” have left a deep impression. Although after more than 20 years of development, range hoods have entered thousands of households, from cumbersome to fashionable, concise, after several changes, the development of hoods has never jumped out of the "weird circle" with exposed oil nets and unsightly appearance. It was not until Haier's deep cavity variable frequency range hood appeared that it broke the industry's limitations. Its industry's first deep cavity frequency conversion design not only solves the problem of oily spillover and noise, but also creates a change from “exposed to concave” of the hood oil network.

User demand drives deep chamber design of range hood

Tracing back to the source, in the early days of reform and opening up in the south wind window, the range hood products flew into the homes of ordinary people like the spring after the rain. "The first generation of range hoods at that time was called a smoke exhauster. It was installed on the cabinet window and consisted of a triangular iron. The motor was turned with leaves and could function as a smoke exhauster, but the noise was very high." Industry insiders said that at 20 In the course of many years of development, although the hood has undergone three changes, from rough to delicate and simple, from bulky to fashionable and efficient, the problem of unsightly appearance and soot spillage caused by the exposure of the hood oil net has not been solved.

As early as 2009, a technological change in the hood has begun. “At that time, through online questionnaires and telephone interviews, I found that users especially wanted to change this situation.” Haier Kitchen Electric’s R&D staff told reporters that they found that most users prefer the sleek and simple fume when using the hood. A product that does not overflow or has low noise. How to break this limitation has become a difficult problem before them.

As the person in charge of the R&D team of the deep cavity variable frequency range hood at that time, the engineer Fu Gang told the reporter that the range hood has undergone three generations of technological changes, but the oil net has always been inverted cone. "This not only causes the oil net to be exposed, but also affects the appearance of the range hood. It is also easy to cause the smoke to overflow and the smoke effect is poor, and the oil net touched by the oil smoke is likely to cause a harsh whistle." Fu Gang said that considering the actual needs of users They boldly proposed an idea to design the inverted cone oil mesh into a deep cavity concave shape.

1500 experiments to achieve a comfortable kitchen experience

The reporter learned that after finalizing the idea, the development of deep-cavity range hoods became the primary task of their work. During the period, they repeatedly demonstrated according to the needs of user feedback, designed dozens of programs, and repeatedly modified and designed. Finally, in May 2010, the general structure of the deep cavity inverter range hood was completed. In June of the same year, more than 540 days and more than 1,500 experiments were started.

"Any product that wants to enter the hands of users must undergo repeated experiments again and again before leaving the factory." Engineer Fu Gang told reporters that they usually called this experiment "the devil experiment", and this demanding The requirement is not only responsible for the user, but also the embodiment of Haier's “zero defect” manufacturing system. "In the course of a year and a half, the oil was heated continuously, and then sprayed into the water to form a large amount of soot. Thus, three experiments per day, one and a half years is equivalent to more than 1,500 repeated experiments. It is used to test the effect of the range hood of the range hood.” Fu Gang told the reporter that after a lot of experiments, this deep cavity frequency conversion range hood not only solves the problem of the appearance of the oil net exposed, but also has a strong effect on the smoke. The problem of fumes spilling out.

In addition, the reporter also learned that the deep cavity frequency conversion range hood has a better solution in the mute effect. The deep cavity design and the industry's first frequency conversion technology make the lowest mute effect of the hood up to 22 decibels, which improves the user's comfort.

Yan Xuwei, dean of the China Household Electrical Appliances Research Institute, once said that in today's increasingly fierce market competition, home appliance companies must not only ensure product quality, but also enhance innovation and research and development capabilities. Haier kitchen appliances can continue to innovate, from discovering user needs to meeting user needs, and in the manufacture of “zero defect culture” system, always bring a better life experience to users and lead the industry to develop and innovate.