Title:
【発明の名称】空気清浄器システムの指示器装置及びその方法
Document Type and Number:
Japanese Patent JP2001518379
Kind Code:
A
Abstract:
A dust collector system includes a conduit defining an interior volume, having a first open end, and including an air vent. A pressure differential detector includes a first air flow tap, a second air flow tap, and a pressure differential indicator. The first air flow tap is connected to a dust filter unit dirty air plenum. The second air flow tap is connected to the sensor conduit internal volume at a portion above a location corresponding to a level of collected dust to be detected. The pressure differential detector indicates a presence of at least a selected pressure differential between the first and second air flow taps. When a level of dust in the dust collection container reaches a selected level, it will close the sensor conduit first end. When the sensor conduit first end is closed, a pressure within the sensor conduit internal volume will rise towards atmospheric as a result of the air flow through the air vent. When the pressure within the sensor conduit internal volume rises, the detector will detect a selected pressure differential between the first and second taps and will indicate the presence of the selected pressure differential with the indicator.
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Inventors:
Johnson, Stephen, A.
Application Number:
JP2000513661A
Publication Date:
October 16, 2001
Filing Date:
September 17, 1998
Export Citation:
Assignee:
Donaldson Company, Inc.
International Classes:
G01F23/14; B01D46/00; B01D46/42; B01D46/44; (IPC1-7): B01D46/42; G01F23/14
Attorney, Agent or Firm:
Yasunori Otsuka (2 outside)