Title:
DRUM TYPE DRYING MACHINE
Document Type and Number:
Japanese Patent JP3264597
Kind Code:
B2
Abstract:
PURPOSE: To make it possible to de-energize a motor and heaters of a drum type drying machine by means of a door switch and to prolong the life of this door switch without allowing large current to the door switch.
CONSTITUTION: The door switch 42 turns on and the DC voltage of a DC power source section 50 is impressed on a driving circuit 61 when a door is closed. Inverters 63 to 65 apply gate signals to triacs 47 to 49 when a driving signal is outputted from a microcomputer 60 in this state. The triacs 47 to 49, then, turn on and the motor 34 for driving the drum and the fan of a blasting device and the PTC heaters 31, 32 are energized. The door switch 42 turns off and the impression of the DC voltage on the driving circuit 61 stops when the door is opened. The inverters 63 to 65, then, stop outputting the gate signals and, therefore, the triacs 47 to 49 turn off and the motor and the PTC heaters are de-energized.
Inventors:
Nobuichi Nishimura
Hiroshi Ikeda
Hiroshi Ikeda
Application Number:
JP3816395A
Publication Date:
March 11, 2002
Filing Date:
February 27, 1995
Export Citation:
Assignee:
Toshiba Corporation
Toshiba A.V.E. Co., Ltd.
Toshiba A.V.E. Co., Ltd.
International Classes:
D06F58/02; D06F58/10; D06F58/28; F26B3/00; F26B11/00; F26B11/04; F26B21/00; H01H13/18; (IPC1-7): D06F58/28; D06F58/02; H01H13/18
Domestic Patent References:
| JP6327898A | ||||
| JP49440B2 |
Other References:
【文献】特許2902906(JP,B2)
Attorney, Agent or Firm:
Tsuyoshi Sato