F - Mech Eng,Light,Heat,Weapons – 24 – F
Patent
F - Mech Eng,Light,Heat,Weapons
24
F
236/1, 98/45
F24F 13/10 (2006.01) F16K 24/04 (2006.01) F24F 7/00 (2006.01) F24F 11/053 (2006.01)
Patent
CA 1047825
CANADIAN PATENT APPLICATION OF OLOV RAGNAR LENNART ERIKSSON FOR APPARATUS FOR LIMITING THE OUTGOING AIR FLOW IN NATURAL VENTILA- TION SYSTEMS. Abstract of the Disclosure This invention relates to a natural ventilation system for buildings and comprises for use at an outlet portion of a venting duct a movable duct closing means and a temperature sensing means which is connected to operate said duct closing means and is mounted to be exposed to prevailing temperature and wind conditions in the atmosphere outside the venting duct as well as to at least a portion of the outgoing air flow in the venting duct to be actuated thereby and accordingly to operate the venting duct closing means, whereby the sensing means will operate so as to a) gradually close the venting duct closing means at increasing wind force, b) gradually open the venting duct closing means at decreasing wind force, c) gradually close the venting duct closing means at increasing flow of outgoing air and increasing outdoor temperature, and d) gradually open the venting duct closing means at increasing flow of outgoing air and increasing outdoor temperature.
253266
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