AIR CURTAIN

Japanese Patent JP3488126

B2

PROBLEM TO BE SOLVED: To increase wind velocity for allowing air current to arrive far way without reducing the amount of wind by providing two double suction port sirocco fans mounted to the single or double shaft of a motor coaxially in parallel for fixing to a body, and by providing a suction port in three directions other than an outlet in the body.
SOLUTION: Inside a body 4 with a three-direction suction port other than an outlet, a double suction port multiblade centrifugal blower 6 is provided at the double or single shaft of an electric motor 5. In each suction port, a filter or a grill is installed. When the double suction port type multiblade centrifugal blower 6 is rotated, suction air passes through the grill, enters an impeller 10 from the three-direction suction port of the blower 6 for boosting, passes through the inside of a spiral casing 11, and is discharged form a discharge port. At this time, even when an obstacle such as a wall exists near one suction port, the suction air is smoothly sucked from the other suction port. Also, by an air curtain, the amount of wind cannot be reduced even when the obstacle exists in the suction port, and also the velocity of blow-off wind is not reduced.

Kazuo Ogino
Kazuya Ohmori
Takuya Arai
Takaaki Nakasone
Toru Kai

JP8876099A

January 19, 2004

March 30, 1999

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Matsushita Ecosystems Co., Ltd.

F04D17/16; F04D25/02; F04D25/08; F04D25/16; F04D29/44; F04D29/46; F24F9/00; (IPC1-7): F24F9/00; F04D17/16; F04D25/02; F04D25/08; F04D25/16; F04D29/44; F04D29/46

JP599454A
JP9228997A
JP6313603A
JP10253121A
JP6307691A
JP1118194U
JP5317973U
JP5743400U

Fumio Iwahashi (2 others)

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