Patent
On-off thermostat based modulating air flow controller
TLDR
In this paper, a system for providing modulated air flow control in response to an on-off thermostat having an onoff heating system is presented. But the system is not suitable for the use of a self-returning, slow moving motor.Abstract:
A system for providing modulated air flow control in response to an on-off thermostat having an on-off thermostat, a self-returning, slow moving motor connected to the thermostat for moving in a first direction when the thermostat is on and moving in a second direction when the thermostat is off, a damper motor adapted to drive a damper, and a controller driven by the self-returning, slow moving motor and connected to the damper motor for modulating air flow in response to the on-off thermostat.read more
Citations
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Patent
Thermostat having modulated and non-modulated provisions
TL;DR: In this article, a thermostat providing modulated or analog control of valves or dampers of an air management system is presented. But the authors do not consider the control of a single cooling or heating stage, since one full stage that is either fully on or off may not be easy to manage for effective air management of a particular type of building or facility.
Patent
PDA configuration of thermostats
TL;DR: In this article, a personal digital assistant can remotely configure, commission, select, set or adjust the parameters and options of a control system, which may include, but not be limited to, temperatures, humidity, sensors, volume of air movement, fan or air mover behavior, the percentage of added fresh air, modulated and non-modulated control of valves and dampers, stages of cooling and heating at various zones, control of heat pumps, heaters and air conditioners, modes of occupied, unoccupied or standby of respective spaces in a building, for day
Patent
PDA diagnosis of thermostats
Paul C. Wacker,Richard A. Wruck +1 more
TL;DR: A system PDA-based on-line diagnostics for automatically discovering a thermostat configuration, turning off normal controller delays, temporary overriding sensor inputs and set points, and verifying proper output action including the monitoring the discharge air temperature for the resulting temperature behavior based on the equipment stages activated.
Patent
Controller system user interface
TL;DR: A thermostat system having dedicated informational regions in a display and associated buttons or softkeys for sequential operation may maximize utilization of a sectioned display and buttons for system navigation as discussed by the authors.
Patent
Transfer of controller customizations
TL;DR: In this article, personal digital assistants (PDA) can be used to set and adjust a control system such as a thermostat, controller or computer having numerous parameters and options that may be selected for desired operation of an air management system.
References
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Patent
Pneumatic temperature reset differential pressure controller
TL;DR: In this paper, a variable air flow velocity controller is proposed to provide auto-matic compensation for control offset produced by changes in the static air pressure in the duct, which includes a maximum lift cam and a movable spring fulcrum which are both mounted in a common cam housing.
Patent
Flow control apparatus
John C. Ovard,Joel I. Reisman +1 more
TL;DR: A flow control nozzle for directing a liquid through the floor of a liquid containing basin is described in this paper, which includes a substantially vertical tubular portion having a lower end adapted to extend through the ceiling of the basin, a chamber portion having an upper surface adapted to communicate with an upper end of the tubular part, the bottom surface having openings formed therethrough and being positioned a predetermined distance above the floor.
Patent
Fluid flow controller
TL;DR: In this article, a fluid flow controller is adapted for maintaining a variable value constant volume fluid flow through a conduit supplying fluid to a zone, where a spring-biased vane is disposed across the diameter of the conduit to provide a motion signal proportional to the average volume flow pressure across the width of the pipe.
Patent
Fluid flow regulating systems
TL;DR: In this paper, a velocity head force sensor that responds to the velocity head forces of an air stream delivered by the pumping device is detected and used to control the power delivered to the motor.
Patent
Thermostatic control for use in variable air distribution systems
TL;DR: In this article, a combination of a pneumatic actuator and a bellows-spring is used to determine the position and movement of a master lever in two opposite directions and this movement is utilized to activate a control for continuously switching the system between delivery of cold or hot air.