Title:
植物容器用送風ファン
Document Type and Number:
Japanese Patent JP4118468
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To change the inner environment of an approximately closed plant container into an environment similar to a natural environment, and to prevent the deterioration in the startability of a ventilation fan due to dew condensation. SOLUTION: This ventilation fan 10 comprises a driven fan 11 which is disposed in an approximately closed plant container 1 and has a driven side rotor 14 disposed in vicinity to the non-magnetic insulator portion of the plant container, an electric rotor 22 which is set on the non-magnetic insulator portion to face the driven side rotor from the outside of the plant container and has a driving side permanent magnet portion 23, an electric motor 19 for rotating the electric rotor 22, and dew condensation bridging prevention means 3L 32 and 33 for preventing the formation of bridges between the driven side rotor and the non-magnetic insulator portion due to dew condensation. The driven fan is rotated, while following the rotation of the electric rotor, when the driven side rotor receives the magnetic attraction force of the driving side permanent magnet portion and/or a force acting on an eddy current on the rotation of the electric rotor.
Inventors:
Yusuke Kondo
Koji Sawai
Koji Sawai
Application Number:
JP23113799A
Publication Date:
July 16, 2008
Filing Date:
August 18, 1999
Export Citation:
Assignee:
Sanmei Electric Co., Ltd.
International Classes:
A01G9/02; A01G9/24; A47G7/02
Domestic Patent References:
| JP2000350518A | ||||
| JP200149A | ||||
| JP60054623A | ||||
| JP7018532U | ||||
| JP11151041A | ||||
| JP4234920A | ||||
| JP11196675A |
Attorney, Agent or Firm:
Akio Iida