Proportional motor drive control
This patent describes an air conditioning system having an air distribution duct and a temperature controlled zone communicating with the duct. The improvement described here consists of: an air flow damper disposed within the duct; first electronic sensor means disposed within the duct for directly sensing the actual velocity of air flow within the system; second electronic sensor means disposed within the zone for directly sensing the actual temperature of air within the zone; and means responsive to the relative outputs of the first and second electronic sensor means for controlling the amount of opening of the damper within the duct for regulating the air flow velocity through the duct.
- Assignee:
- Hoffman Controls Corp., Dallas, TX
- Patent Number(s):
- US 4607789
- OSTI ID:
- 5286558
- Country of Publication:
- United States
- Language:
- English
Similar Records
Thermostat control system
Temperature control system
Related Subjects
320100* -- Energy Conservation
Consumption
& Utilization-- Buildings
AIR CONDITIONERS
AIR CONDITIONING
AIR FLOW
BUILDINGS
CONTROL
CONTROL EQUIPMENT
CONTROL SYSTEMS
DRAFT CONTROL SYSTEMS
DUCTS
ELECTRIC MOTORS
ELECTRONIC EQUIPMENT
EQUIPMENT
FLOW REGULATORS
FLOWMETERS
FLUID FLOW
GAS FLOW
MEASURING INSTRUMENTS
METERS
MOTORS
TEMPERATURE CONTROL