Process and a device for regulating the flow rate of an air current
December 27, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMobile equipment air-conditioner Electronic control circuit for blowers in vehicles Environmental control for tractor cab Method and apparatus for controlling an electrically driven automotive air conditioner Airconditioning control system for an automotive vehicle System for conditioning air, method of operating such, and circuit Method and apparatus for controlling a blower motor in an air handling system Method for controlling a motor vehicle air conditioning system Automatic constant air flow rate pump unit for sampling air Mass flow rate control system and method InventorApplicationNo. 775000 filed on 12/27/1996US Classes:417/18, Single motor control element responsive to means sensing diverse conditions62/186, Air controller or director417/20, One condition is rate of flow to or from pump417/22, One condition is speed of pump417/43, Responsive to change in rate of pump fluid flow417/45, By changing electrical characteristic of motor or motor circuit454/75Having automatic control meansExaminersPrimary: Thorpe, Timothy S.Assistant: Thai, Tuan V. Attorney, Agent or FirmForeign Patent References
International ClassF04B 049/00Foreign Application Priority Data1993-04-23 FRAbstractThe invention is based on the premise that, for a given air blower, the current I consumed by the electric motor, the rotational speed N and the air flow rate Q are interconnected, regardless of the dynamic pressure, by a law Q=f(I, N) which can be experimentally determined on a ventilation bench. In order to perform any adjustment, I and N are measured, from which a calculator derives Q by means of the above-mentioned law. The comparison of the calculated value with the desired flow rate Qd provides an error signal which is applied to a control device which determines the supply voltage (U) of the motor of the blower. The invention is applicable to heating or air-conditioning installations for the passenger space of vehicles.Field of SearchSingle motor control element responsive to means sensing diverse conditionsOne condition is rate of flow to or from pump One condition is speed of pump In response to pump speed Responsive to change in electrical operating characteristic By changing electrical characteristic of motor or motor circuit PROCESSES Responsive to change in rate of pump fluid flow Air controller or director Having automatic control means Responsive to speed or rotation phase angle Responsive to an additional condition Frequency control | |
