Heat exchange – With timer – programmer – time delay – or condition responsive... – Means to heat or cool for predetermined periods of time
Reexamination Certificate
2004-04-22
2008-08-12
Ciric, Ljiljana (Lil) V (Department: 3744)
Heat exchange
With timer, programmer, time delay, or condition responsive...
Means to heat or cool for predetermined periods of time
C454S238000, C454S239000
Reexamination Certificate
active
07409986
ABSTRACT:
A method for controlling flow rates of outdoor air supplied to a room and room air discharged to an outside of the room in ventilation. The method of the present invention includes the steps of supplying outdoor air drawn through an air supply duct to a room at a first flow rate, and discharging room air drawn through an air discharge duct to an outside of the room at a second flow rate higher than the first flow rate. The first and second flow rates vary with rotation speeds of fans respectively mounted on an air supply duct and an air discharge duct.
REFERENCES:
patent: 5538471 (1996-07-01), Guiles, Jr.
patent: 1317081 (2001-10-01), None
patent: 1 114 970 (2001-07-01), None
patent: 1 114 970 (2001-07-01), None
patent: 2003-0063844 (2003-07-01), None
Choi Ho Seon
Kim Jeong Yong
Kim Kyung Hwan
Lee Gi Seop
Yum Kwan Ho
Birch & Stewart Kolasch & Birch, LLP
Ciric Ljiljana (Lil) V
LG Electronics Inc.
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