US Patent No. 9,243,586


Patent No. 9,243,586
Issue Date January 26, 2016 
Title Ventilation Outlet Structure Of Cogeneration System
Inventorship Akiko Ichikawa, Saitama (JP)
Atsumu Naoi, Saitama (JP)
Kotaro Sugi, Saitama (JP)
Assignee Honda Motor Co., Ltd., Tokyo (JP)

Claim of US Patent No. 9,243,586

1. A ventilation outlet of a generation unit case housing a cogeneration system having a generation unit including a generator
connectable to an AC power feed line between a commercial power network and an electrical load, and an internal combustion
engine adapted to drive the generator and connectable to a thermal load through a heat exchanger, the generation unit case
being adapted to be installed outdoors,
the ventilation outlet comprises:
a box-shaped member whose inside surfaces are attached with sound insulators and bored with an inlet hole at its upper portion,
in a gravitational direction when attached to the generation unit case, to be communicated with an inside of the generation
unit case and bored with an outlet hole at its lower portion in the gravitational direction that connects the inlet hole to
exterior through a passage formed among the sound insulators;

a flow guide plate installed near the outlet hole to guide rainwater entered from outside to flow upward; and
a shield installed at the passage to prevent the rainwater from flowing further upward,
wherein the shield comprises a sound insulating member placed so as to block any possible straight line connecting the inlet
hole with the outlet hole in a plan view of the box-shaped member.