Sanyo Electric Co., Ltd.

Hideya Tsuchida

Sadaki Kodera

Akihiro Morita

Toshiyuki Fujiyoshi

Eiji Mukumoto

Kouichi Nakai

Hirotaka Shikano

Kei Takai

Yuji Fujiwara

Yoshiaki Matsumoto

Makoto Iwatake

Shigeki Inui

Hideki Ochi

Hiromichi Matsuhashi

Chizuyo Matsumoto

Akihiro Fukumoto

Shozo Ushio

An electric vacuum cleaner () of the invention is adapted for wipe off cleaning using a sheet wound about a rotary brush () incorporated in a suction device (). In order to wind a sheet () around a periphery of the rotary brush (), a brush motor () rotates the rotary brush () in a predetermined direction at a predetermined rotational speed. At the same time, suction force of an electric blower fan () is set to the lowest level. This achieves the following advantage in a case where a wet sheet is used as the sheet (). During sheet winding, water and alcohol released from the wet sheet () can be prevented from being scattered on a surface () to be cleaned. Further, the released water and alcohol do not adversely affect the electric blower fan ().

Electric vacuum cleaner

An electric vacuum cleaner has a dust collecting section for removing dust and an electric air blower mounted in its main body and comprises a filter for removing dust from air sucked into the dust collecting section by driving the electric air blower, and a disposable filter can be arranged on the upstream side of the filter.

An electric fan comprises: a radial impeller for expelling the air trapped therein out of the impeller; a diffuser having a multiplicity of air passages separated by air guides, the air passages adapted to receive the air expelled from the impeller; a fan case for covering the impeller and the air guides; at least one throughhole which is formed in the fan case for each of the air passages; and a silencer equipped with a multiplicity of silencer cavities each having a predetermined volume and communicating with a corresponding one of the air passages, the silencer covering the fan case. The silencer is provided either on top of or beneath the fan case. Because the volumes of these silencer cavities may be chosen arbitrarily such that the silencer cavities may absorb noise caused by the interference between the impeller and the air passages, even audible noise may be suppressed sufficiently.

Electric fan

Growing community of inventors

Kakogawa, Japan

Hideya Tsuchida