US3812904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for air conditioning a number of rooms having mutually different heat requirements, preferably rooms having a heat requirement varying with time
Abstract A system for air conditioning buildings in which the heat generated by the bulbs in lighting fixtures selectively is used to heat the room, or is carried away with the exhaust air. The system injects central air into the room adjacent the fittings, and exhaust air from the room is conducted away first through the outside window area and then through the lighting fixtures either in a path in direct contact with the bulbs or in a path bypassing direct contact with the bulbs. Dampers are provided to control the proportion of flow through the two paths in the fixtures and thereby to control the proportion of the heat generated by the bulbs which is used to heat the room on one hand and the portion which is discharged with the exhaust air on the other hand. The dampers are controlled in accordance with the demand for heat in the room and an auxiliary heater is provided for the injected air, for operation when the bulbs do not supply sufficient heat to maintain the desired temperature in the space.
Inventors
👤 F Westergren
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-28 14:07
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/044; F24F3/056
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
78 words
A system for air conditioning buildinGs having a plurality of rooms with heat-generating lighting fixtures therein including inlet means, means to condition and inject central air into each room, and means to exhaust air from the room including a passageway through the light fixture, a bypass passage around said light fixture, and means to adjust the heat imparted to said exhaust air by said fixture by regulating the portions of the exhaust air flowing through said two passages.
Claim 2
Independent Claim
78 words
A system for air conditioning buildinGs having a plurality of rooms with heat-generating lighting fixtures therein including inlet means, means to condition and inject central air into each room, and means to exhaust air from the room including a passageway through the light fixture, a bypass passage around said light fixture, and means to adjust the heat imparted to said exhaust air by said fixture by regulating the portions of the exhaust air flowing through said two passages.
Claim 3
Dependent Claim
64 words
A system according to claim 1 wherein said two passages comprise an air duct running inside of the light fixture and a bypass duct parallel to said air duct, said adjusting means comprising two dampers respectively positioned in said air duct and bypass duct and a common motor to adjust said dampers concurrently to regulate the proportion of exhaust air flowing through said ducts.
Claim 4
Dependent Claim
34 words
A system according to claim 1 wherein said rooms are provided with exhaust air windows having an exhaust air duct for two passages being commonly connected to said exhaust air duct of the window.
Claim 5
Dependent Claim
40 words
A system according to claim 3 wherein said room has two opposite sides confronting each other, said window being positioned in one of said sides and said air inlet for central air being positioned in the other of said sides.
Claim 6
Dependent Claim
41 words
A system according to claim 4 wherein said light fixture has a lens screen positioned in the ceiling of the room and said central air inlet means is positioned adjacent said screen to cause the air to flow across said screen.