Automatic damper control

Patent · Tue Jun 16 00:00:00 EDT 1981

OSTI ID:5759262

Perrelli, N J

An automatic damper control comprising: damper means for use in a flue or the like; diaphragm means adapted to expand and contract in response to pressure variations in the flue; and sensor means for sensing the pressure in the flue is disclosed. The sensor means is connected to the diaphragm means and comprises means for generating a plurality of beams of light. The sensor means further comprises collimating means adapted to collimate each of the beams of light onto a photoreceptor. The damper control also comprises blocking means for blocking at least one of the beams of light. The blocking means is operatively associated with the diaphragm means and is adapted to be displaced relative to the beams of light in response to movement by the diaphragm means. Drive means are additionally provided for moving the damper means in response to pressure variations in the flue.

• Assignee: IFI; EDB-82-040093
• Patent Number(s): US 4273526
• OSTI ID: 5759262
• Resource Relation: Patent File Date: Filed date 12 Jul 1979
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
DRAFT CONTROL SYSTEMS
DESIGN
AUTOMATION
BELLOWS
CHANNELING
COLLIMATORS
ENERGY CONSERVATION
FLUE GAS
LIGHT SOURCES
PHOTOTRANSISTORS
PRESSURE DEPENDENCE
CONTROL EQUIPMENT
EQUIPMENT
FLOW REGULATORS
GASEOUS WASTES
MECHANICAL STRUCTURES
RADIATION SOURCES
SEMICONDUCTOR DEVICES
TRANSISTORS
WASTES
320100* - Energy Conservation
Consumption
& Utilization- Buildings