Sanyo Electric Co., Ltd.

Toshiyuki Fujiyoshi

Sadaki Kodera

Yoshihiro Mori

Toshinari Kobayashi

Takahiro Nishiyama

Kenji Aida

Koichi Nakai

Hideya Tsuchida

Kouichi Nakai

Makoto Iwatake

Kei Takai

Noriaki Kimura

Akihiko Zako

Shozo Ushio

Kazuo Saito

Keiichi Sato

Yoshihisa Ueno

Toshio Otani

Masaki Sasao

Toshihiro Suto

Hiromichi Matsuhashi

Takao Tarutani

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.

Electric vacuum cleaner

In an electric blower, exhaust air discharged radially from a centrifugal fan is redirected to a motor drive section by a diffuser and a fan cover. The air passes from a ventilation opening on a motor frame and through a bracket to cool the motor drive section. A portion of the air from the centrifugal fan is bled off through exhaust openings without passing over the motor, whereby this portion remains cooler and cleaner than the air that passes over the motor. Air flows up a wand and then passes over the motor to cool the motor. This air passes through filters before being discharged. The portion of air that is bled off passes along a parallel path in the wand to agitate dirt, and to maintain the wand relatively cool. In one embodiment, some of the bled-off portion is discharged directly without passing along the wand.

Electric blower and electric cleaning device using the same

A vacuum cleaner wherein a hose, a pipe and a suction nozzle, which are connected to a vacuum cleaner main body incorporating therein a motor fan, are formed with a suction air passage as well as an exhaust air passage for making air exhausted from the motor fan circumfluently flow. The pipe is composed of an inner cylindrical portion having a substantially circular section and forming the suction air passage, and an outer cylindrical portion a part of which is uniformly formed with the inner cylindrical portion and which covers the inner cylindrical portion to form the exhaust air passage. There can be achieved for a light-weighted and slim-sized arrangement of the pipe through which the suction air passage and the exhaust air passage extends without the fear of dust plugging, and a vacuum cleaner of exhaust circumfluently flowing type can be easily put into to practice.

Vacuum cleaner

A dust suction head for use in an electric vacuum cleaner, having an air suction port at the bottom of the head. The head has a brush chamber which accommodates therein a freely rotatable brush having blades that extend along the shaft of the rotational brush. The head additionally has an opening and an air passage connected with the opening for taking in and leading fresh air into the vacuum chamber of the cleaner through the brush chamber such that the fresh air passing through the brush chamber impinges on the blades to accelerate the rotational motion of the blades. Thus, the head can obtain a necessary amount of air to rotate the brush at all times, especially when it is brushing a carpet, and maintain its smooth motion on the floor while dusting it.

Dust suction head for electric vacuum cleaner

Growing community of inventors

Himeji, Japan

Toshiyuki Fujiyoshi