Household appliances (HEA) mainly refer to various electrical and electronic appliances used in family and similar places.Also known as civil appliances and daily appliances.Household appliances make people liberate from the heavy, trivial, and time -consuming housework, creating a more comfortable and beautiful life and working environment for human beings.The necessities of life.
Household appliance classification introduction
The classification method of household appliances has not been unified in the world.However, it is commonly divided into 8 categories according to the functions and uses of products.
① Refrigeration appliances.Including household refrigerators, cold beverage machines, etc.
② Air conditioner.Including room air -conditioners, electric fans, air -changing fans, hot and cold air, air dehumidifier, cold fan, humidifier, etc.
③ Clean electrical appliances.Including washing machines, drying machines, electric iron, vacuum cleaners, floor waxing machines, sweeping robots, etc.
④ Kitchen appliances.Including electric stoves, microwave ovens, electromagnetic stoves, electric ovens, rice cookers, dishwashing machines, electric water heaters, food processing machines, etc.
⑤ Electric heaters.Including electric blankets, electric heating, water hot blankets, electric heating clothes, space heater.
⑥ Cosmetic health electrical appliances.Including electric shaver, hair dryer, hair, ultrasonic facial cleanser, electric massage device.
Sound electrical appliances.Including miniature projectors, televisions, radios, recorders, video recorders, cameras, combined audio, etc.
⑧ Other electrical appliances, such as fireworks alarm, electric bell, etc.
With the improvement of life, the water purifier has also become a member of the household appliances. More and more families use this new type of electrical product: as most of the worlds water body pollution is severe, it exacerbates contradictions in the shortage of water resources.EssenceTraditional tap water treatment methods can no longer guarantee providing excellent quality drinking water, and there are still secondary pollution problems in municipal water supply, such as high -rise water tank water supply, long tap water conveying pipelines, which will cause potential rust, sediment, sediment, sedimentAnd pollution such as microorganisms.Therefore, all kinds of water purifiers came into being.
Household appliances, referred to as home appliances, refers to the use of electrical energy to drive (or mechanized movements), which can help perform family miscellaneous services, such as cooking, food preservation or cleaning.In the environment of industry.Basically, household appliances are divided into large home appliances (white appliances, black appliances) and small appliances.
Household appliance appraisal method
Color TV
1. The chromaticity rotation is minimized, the brightness, the contrast, the image is clear and soft, and the layers are clear.
2. The color rotation is large, and the color confusion flow should not be occurred during the period from black and white to color images.
3. After mixing the most clear images, continue to rotate the frequency fine -tuning button. The image will become rough and distorted. Frequent the frequency of fine -tuning switch, the image should be immediately recovered clearly.
4. Observe whether the color is naturally coordinated.
5. In addition to environmental interference, wave -shaped, mesh patterns, and strips on the screen are abnormal phenomena.
6. The volume is appropriately increased, and the sound is pleasant.
7. Adjust the measurement, and the contrast of the new should have a significant effect.
8. Set up the pre -selected device in turn, and the picture only flashes slightly.
9. Turn off the power switch and leave the screen without light bands or light spots.
refrigerator
Look at the shape first, pay attention to the color of the shape, whether the paint film is peeled off and uneven.Connect the power supply and adjust the temperature, it should be adjusted to the second gear.Let the automatic controller stop, start multiple times, check whether the temperature control device is reliable and effective, and then check whether the operation of the compressor is normal and noise.Cream water can appear in the post -evaporator. In this way, check whether the evaporator is uniform on the four walls and whether the heat dissipation is the same. Finally, check whether the door is strict and flexible.
A good refrigerator, the power supply can be started to run, and the sound and vibration are small, which is almost not easy to detect.
The compressor is running, the refrigerator will tremble slightly and hear the noise, but the noise should not be higher than 45dB, that is, in a quiet environment, you can only hear the light buzz of the compressed machine.At the point, you should not hear the sound.Touch the box in your hand, you should not have obvious vibration.
Rice cooker
First put the inner pot (or the inner linery) into the shell, rotate several times left and right, check whether the inner pot and the heating plate at the bottom of the shell are involved, and the use efficiency of the consistency is high.After connecting the power, touch the shell with your fingers, and you should not feel numb (leakage).After pressing the cooking switch for five minutes, the temperature at the bottom of the inner pot is about 103 degrees. At this time, the thermostat contact should be automatically disconnected.
Refrigerator temperature controller
1. First, turn the temperature control switch to the "strong cold" file (must be five minutes). At this time, the compressor begins to work.
2. Wait for 5--7 minutes to spin the switch to the "weak and cold" file. The compressor should stop working. At the same time, the switch will have a "click" sound.
3. Wait for another five minutes to dial the switch to the original "strong cold" file. The compressor should work. At this time, it can be considered that the temperature controller is normal.
automatic washing machine
1. Clarify whether the controller of the washing machine program controller is a mechanical cam type or a computer.
2. Test machines, observe its entry, washing, drainage, and drying should be consistent with the time specified in the instructions.
3. When the pointer turns to the "dry" program, open the upper cover, and the drying tube should stop rotating in 10 seconds.
Electric fan
1. Style.
2. Look at the appearance: In addition to the beautiful and generous appearance, it depends on whether the paint and chrome plating are smooth, straight, without wrinkles, etc. The turning of the leaves should be smooth
3. Measurement: See if the opening key is sharp, test whether the head and the timer are spiritual, the control is accurate, the wind is different, the blades are stable, no sound, no leakage, and normal temperature.
Quartz electronic watch
After looking at the good appearance, pull out the table to the needle position. The second hand should stop the jump immediately. The needle tip is just facing the point scale. When the acupuncture point is dialed in the front and back direction, the second hand should stop.After pushing back the table for a second, the second hand should immediately return to the beating. When you leave, the second hand should be just a grid, and the second hand and the glass surface have no touch.

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