Electric vacuum cleaners have a history of 100 years and have become indispensable household equipment for many people, for obvious reasons. Current control motor operation. The motor is equipped with a fan, and the fan blades have a certain angle, just like the propeller of an airplane. When the fan blades rotate, they push air all the way to the exhaust port. When air particles are pushed forward, the particle density in front of the fan increases, and the air pressure correspondingly increases, while the particle density behind the fan decreases. The pressure drop generated behind the fan is similar to the pressure drop generated in the straw when you drink. The pressure behind the fan is lower than the pressure outside the vacuum cleaner, which is the ambient air pressure. This will generate suction inside the vacuum cleaner, which is a partial vacuum
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
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1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
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6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China