Title:
DAMPER DEVICE
Document Type and Number:
Japanese Patent JP2023163972
Kind Code:
A
Abstract:
To provide a damper device which can shorten a time necessary for a transition of a damper to a closed state from an open state.SOLUTION: In a damper device of one aspect of the present disclosure, a bulkhead opening part is arranged obliquely with respect to a flow passage direction progressing toward a second opening part from a first opening part while having a first angle at an opening face of the bulkhead opening part. An arm part is connected to a turning shaft. A weight imparts a turning force generated by the gravity to the turning shaft via the arm part. The turning force generated by the gravity responds to a force for turning the turning shaft in a direction in which the damper is brought into a closed state. A lock mechanism is constituted so as to be settable to a turn limit state and a turn permission state. The turn limit state is adapted to a state that the arm is fixed in a position in which the damper is brought into an open state.SELECTED DRAWING: Figure 5
Inventors:
ISHIKAWA KENJI
NISHIMURA EIKICHI
NISHIMURA EIKICHI
Application Number:
JP2022075234A
Publication Date:
November 10, 2023
Filing Date:
April 28, 2022
Export Citation:
Assignee:
RYOSEI CO LTD
International Classes:
F24F13/14; F24F13/02
Attorney, Agent or Firm:
Nagoya International Patent Attorney Corporation