FIELD: personal use articles.
SUBSTANCE: electric vacuum cleaner is proposed, in which the inadmissable sparking is accurately detected in the electrical air intake unit to prevent occurrence of smoke or fire in the electric air intake unit. The electric vacuum cleaner 1 comprises a spark detector 31, which detects sparking caused by friction between the manifold 23 and a graphite brush 26 of the electric air intake unit 10, which creating a negative pressure provides the suction of dust into the chamber 7 for collecting dust; and the control unit 32 which regulates the electric air intake unit 10 on the basis of information about detection of sparking coming from the spark detector 31.
EFFECT: spark detector 31 calculates the difference between the previous and the most recent values of the sampled values, based on the difference it calculates the next value, and when the difference between the calculated value and the measured value exceeds a predetermined value, the control unit 32 stops the operation of electric air intake unit.
13 cl, 21 dwg
Title | Year | Author | Number |
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ELECTRIC VACUUM CLEANER | 2012 |
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ELECTRIC VACUUM CLEANER | 2008 |
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ELECTRIC VACUUM CLEANER | 2009 |
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REFRIGERATOR | 2009 |
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RU2409794C1 |
Authors
Dates
2013-10-10—Published
2009-12-28—Filed