Range hood, as the most common household appliance in the kitchen, helps us to remove the fumes and keep the kitchen clean, but the cleaning of the hood is very troublesome. So, is there any way to easily wash off the oil on the surface of the hood? Look at today's national laboratory.
How to remove oil from the hood?
The hood of the house has been used for a long time, and it will be covered with a thick layer of oil. The oil is sticky and thick and difficult to wash. You can see that the hood of this household has two or three millimeters of black oil. Thick, I can't see the original appearance of the hood.
Reporter: How long did you use this hood?
Mr. Xu, the resident: It took about six or seven years.
Reporter: I think this is all black oil. Have you tried any way to wash it?
Mr. Xu: No, I don’t know how to wash it.
Reporter: Today we will wash you in several ways.
Reporter: In the end, how should these annoying oils be removed? We also took the experience with netizens. The first method provided by netizens is to wash with vinegar and detergent and then heated water. The second is to wash with baking soda or alkaline surface, and the third is to use the waste oil in the hood box to clean. The fourth is to use high pressure steam from a pressure cooker for cleaning. So which method would be better?
Reporter: Uncle, what do you think will be better?
Mr. Xu: I think it is alkaline.
First, the vinegar plus detergent method, first poured hot water in a watering can, then pour 30% vinegar and 5% detergent to shake; the second step, spray the prepared detergent on the hood The surface of the screen was fully reacted; after 3 minutes, the oily surface was scrubbed with a cleaning cotton. After wiping it for a while, the thick oil was finally wiped off a part of the original silver screen.
Second, in the alkaline surface cleaning method, the oily surface is first sprayed with warm water. Next, the alkaline surface powder is poured onto the cleaning cotton, and the oil is directly covered and wiped.
Soon, a very large piece of oil was wiped off by the reporter, and it felt very easy to wipe, and the area of ​​oil that was wiped off was larger than the first method.
The third method, the waste oil cleaning method, uses the waste oil in the oil hood of the hood. Doesn't this sticky waste oil make the hood more dirty? We use experiments to verify the true and false.
After cleaning the waste oil with a clean cotton jacket, the reporter wiped it off slightly on the oily surface, and wiped off a large amount of oil. The cleaning effect was almost the same as that with the alkaline surface.
The last method, the pressure cooker steam cleaning method. According to netizens, first install water in the pressure cooker, press the valve, and then boil the water on the pot. When the pressure of the pressure cooker reaches a certain level, unplug the valve and open the range hood. Netizens said that this method is to use high temperature and high pressure steam to soften the oil, and then easy to scrub. So, can the pressure cooker steam achieve the effect of cleaning oil?
Drop the chemical cleaning agent family method to remove oil and simple and effective
Vinegar plus detergent, alkaline surface, waste oil can clean the oil on the range hood to some extent, then, can the pressure cooker steam achieve the effect of cleaning the oil? Let's look at the experiment.
After the pressure cooker pressure valve is heated for 5 minutes, the water in the pot is opened and the pressure is gradually increasing. The experimenter opens the hood and opens the valve. After 10 minutes, the oil on the hood did not seem to drip. After 20 minutes, we tried to scrub the oil at the steam injection position with clean cotton... It was still very difficult to scrub. It seems that the pressure cooker steam does not dissolve the oil.
Professional cleaning personnel said that in fact, they usually use high-temperature and high-pressure principles to clean up the oil. It is true that with high-temperature steam cleaning machine, the oil quickly dissolves and can be wiped off with a single rub. Then, the same principle, why does the high pressure water vapor of the pressure cooker not effectively clean the oil?
Reporter: We are now putting our hands on the top of the pressure cooker steam. I feel that the steam temperature here is not high at all. You can see my hands can touch, but this is a very comfortable temperature.
Experiment here, we can draw conclusions. Vinegar plus detergent cleaning method, the effect is not satisfactory, and it is more time-consuming, it is necessary to use relatively large strength to wipe off the oil. Alkali surface clearing method, good effect, high efficiency, the disadvantage is that the alkaline surface is alkaline and easy to hurt the hand, so it is recommended to wear gloves or use a small alkaline soda powder. The waste oil cleaning method is also very effective, and the material is economical and practical, but the disadvantage is that it must be scrubbed again with detergent after cleaning the stubborn oil. The pressure cooker steam cleaning method is not very operative, and because it is far from the hood, the temperature and pressure are not enough, so it has no effect. Alkali cleaning method and waste oil cleaning method, win!
So why is the use of alkali and waste oil to effectively remove oil from the hood?
Shang Xiaoli, a chemistry teacher at Yucai Middle School, Xi'an: The waste oil can make the stubborn oil immersion wet, and dissolve it with the principle of similar compatibility. The solution of baking soda and soda ash is alkaline after hydrolysis, which can make the oil occur. The saponification reaction produces water-soluble glycerin and higher fatty acid salts.
Reporter: So after using them, the oil is very good. (Source: Western Network - Shaanxi News Network)
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