What does "frequency" in household appliances mean?
The technology of frequency conversion technology called frequency conversion technology and home appliances in 1970s AC control by changing the frequency of the AC current, household appliances gradually began to appear frequency, electromagnetic cooking device, inverter lighting apparatus, inverter air conditioner, microwave frequency, variable frequency refrigerator, IH (induction heating cooker), inverter washing machine etc.. In the latter half of 1990s, household appliances relied on frequency conversion technology, mainly aiming at high function and power saving. For example, with high speed, high output, good control performance, small light weight, large capacity, high comfort, long life, safe and reliable, mute, power saving and so on.
The new inverter refrigerator not only the reduction of power consumption, realize mute, and the use of high-speed operation can achieve substantial rapid freezing; in the washing machine, used frequency variable speed control, improve washing performance, washing machine popular in addition to saving energy and silent, still ensure soft clothing washing and other aspects of the introduction of control new content;
The air conditioner use frequency, enlarge the working range of the compressor, the compressor does not require intermittent running can be realized in cold and warm control, to reduce power consumption due to temperature changes, eliminate discomfort. In recent years, the new type of air conditioner has adopted brushless DC motor to realize variable frequency speed regulation, and its energy-saving effect is about 10% - 15% higher than that of AC asynchronous motor frequency conversion. In order to further improve the efficiency of the device,
The air conditioner in Japan is gradually changed from pure PWM control to PWM ten PAM mixed control mode. The speed is controlled by PWM, U / F to maintain; when the speed exceeds a certain value, the system will adjust the fixed at the maximum value near, by changing the DC chopper on duty LL, improve the inverter input DC voltage, so as to keep the inverter output voltage and speed is proportional to the area, said PAM area
Microwave frequency with high frequency power to the magnetron necessary boost drive, power supply structure, furnace space more spacious, new microwave oven can adjust power, and choose the best food according to different heating methods, shorten the time, reduce power consumption; lighting, fluorescent lamp with high frequency lighting, can improve the luminous efficiency, energy saving easy, no flicker, dimming, frequency adjustable ballast, compact and lightweight. Frequency conversion technology is bringing a new revolution to all kinds of home appliances, and will bring greater gospel to users. In the future, the frequency conversion technology will develop with the development of power electronic devices, new power conversion topology circuits, filtering and shielding technology. Home solar power generation systems will also add new energy to home appliances.
