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Paramétrages

Paramétrages

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1. WO2009069274 - ASPIRATEUR ÉLECTRIQUE

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

Claims
[1] An electric vacuum cleaner comprising:
a vacuum cleaner main body with a plurality of electric blowers housed therein; a common dust collecting chamber which is provided in the vacuum cleaner
main body and communicates with a suction side of each of the electric blowers; a controlling means capable of making the electric blowers independently drive; and
backflow preventing means which are provided in accordance with the electric
blowers and prevent air from flowing backward to the dust collecting chamber
side.
[2] An electric vacuum cleaner comprising:
a vacuum cleaner main body with a plurality of electric blowers housed therein; a common dust collecting chamber which is provided in the vacuum cleaner
main body and communicates with a suction side of each of the electric blowers; a controlling means capable of performing control for driving only any one of the plurality of electric blowers and stopping the other electric blowers, and control for driving all of the plurality of the electric blowers; and
backflow preventing means which are provided in accordance with the other
electric blowers and prevent air from flowing backward to the dust collecting
chamber side.
[3] The electric vacuum cleaner according to claim 1 or 2, wherein
the backflow preventing means is an opening-closing means for opening and
closing at least either the upstream side or downstream side of the corresponding electric blower.
[4] The electric vacuum cleaner according to claim 3, wherein
the opening-closing means is opened and closed by a pressure difference
between the upstream side and downstream side.
[5] The electric vacuum cleaner according to claim 4, wherein
the opening-closing means includes opening-closing valve bodies each of which has an upper end rotatably supported and rotates downward by its own weight by stopping of the electric blower and closes.
[6] An electric vacuum cleaner comprising:
a vacuum cleaner main body with a plurality of electric blowers housed therein; a common dust collecting chamber which is provided in the vacuum cleaner
main body and communicates with a suction side of each of the electric blowers; and
a controlling means capable of, when driving one of the plurality of electric blowers, driving the other electric blowers so that no air flows backward to the dust collecting chamber side.