Is the window cleaning robot really easy to use

　 　　　As the Spring Festival approaches, every household puts the cleaning of glass windows on the agenda. How to clean the glass in high-rise residential buildings? The reporter visited and found that in addition to manual window cleaning artifacts, electric window cleaning robots are increasingly favored by the public. Is the expensive window cleaning robot really easy to use? On November 30th, Nanjing Consumers Association released the evaluation and analysis report of window cleaning robot. The reporter learned at the scene that the performance of window cleaning robot is not directly proportional to the price.

　　Yangzi Evening News/Zi Niu News reporter Jiang Jingyi

　　The public reported that the window cleaning robot of more than 2,000 yuan could not wipe the dead corner.

　　"It took more than 2,000 yuan to buy a window cleaning robot to clean the window. It took no effort, but the cleaning effect was not as good as expected." Mr. Zhang, a citizen of jianye district, Nanjing, lives on the 21st floor. Because it is close to the road, the dust is heavy, and the glass window is very difficult to clean. "It is expensive and laborious to call for cleaning every week, and it is not clean by myself, so I bought the window cleaning robot from the Internet."

　　Pour clean water into the window cleaning robot, and then adsorb the window cleaning robot on the glass. Consumers can control it manually. The electric window cleaning robot is light and effortless, but the cleaning effect is not as good as expected. "Many dead corners can’t be wiped, and heavy stains can’t be wiped off." Mr. Zhang bought a circular window cleaning robot, and the four corners of the glass window are difficult to cover.

　　The reporter found on the Internet that compared with the manual window cleaning artifact of tens of yuan, the price of electric window cleaning robots is mostly 1,000-2,000 yuan, and there are also more than 3,000 yuan of window cleaning robots.

　　Comparative experiment: window cleaning robot is not as expensive as possible.

　　Is the window cleaning robot as expensive as possible? Nanjing Consumers Association has purchased 10 types of window cleaning robots from market stores (appliance stores) and mainstream e-commerce platforms (JD.COM, Suning.cn, Tmall). The unit price of samples ranges from 830 yuan to 3,280 yuan, involving 9 domestic and foreign brands in the mainstream market. The structural types include crawler-type square window cleaning machines and double-suction-cup rotary oval window cleaning machines.

　　The reporter noted that at present, there is no effective national mandatory or recommended standard for window cleaning robots in China, so this comparative test evaluation project refers to the relevant standards of similar products as much as possible.

　　"Experiments were mainly conducted from the aspects of cleanliness, noise, battery life and energy consumption. The results showed that the coverage of these 10 prototypes was good as a whole, reaching more than 95%, and the performance was not necessarily proportional to the price. In this test, the overall noise of the window cleaning robot is relatively large, with the lowest average reaching 58dB, and seven prototypes reaching more than 60 dB. More than 50dB will affect rest and sleep, so it is best to keep a certain distance between man and machine when using. " Yu Qi, a senior engineer of Nanjing Institute of Product Quality Supervision and Inspection and National Smart Grid Quality Inspection Center, showed a variety of window cleaning robots on the spot. The same glass, HOBOT-388 sample can be cleaned in 115 seconds, while BOBOT(WIN701) sample takes 348 seconds to clean.

　　In addition, all models have the functions of falling prevention, path planning, starting point memory and remote control. There are many functions supported by high prices, but relatively few functions supported by low-priced products, and some explicit functions cannot be realized.

　　Expert advice: dry wipe before wet wipe when using.

　　"When purchasing, consumers should first be clear about their own needs, such as the area of glass in their homes, whether they are equipped with security window, etc., and purchase them in a targeted manner." Cao Wei, Deputy Secretary-General of Nanjing Consumers Association, suggested that consumers should try the machine on the spot when purchasing offline, and check whether the noise range is within their acceptable range.

　　Although all models have anti-fall function, you should first fasten the safety rope when using it to prevent falling from high altitude. When using, try to wipe off the surface wind and sand first, then wet it, and spray cleaning liquid according to the requirements of the manual to prevent the window cleaning robot from slipping because the rag is too wet.

　　After use, consumers should clean the rag and crawler (if any) of the machine in time to prevent the dust accumulation from affecting the next cleaning effect. The battery of the window cleaning robot should be charged at regular intervals (4-6 months is recommended) to ensure the service life of the lithium battery.