System and method for controlling a variable geometry diffuser to minimize noise
July 25, 2010. 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 ReferencesRefrigerant compressor protecting device Control apparatus for centrifugal compressor Capacity control device for controlling a variable displacement compressor in an air conditioning system Apparatus for controlling automotive air conditioners Method and apparatus for regulating power consumption while controlling surge in a centrifugal compressor Calibrating apparatus and method for a movable diffuser wall in a centrifugal compressor Diffuser wall control Centrifugal compressor controller for minimizing power consumption while avoiding surge Compressor Air conditioner system for automobiles Patent #: 4864832 InventorsAssigneeApplicationNo. 557009 filed on 07/25/1990US Classes:62/228.5, By variable compressor output, e.g., unloading, staging, etc.62/201, By external cooled liquid or holdover415/17, Plural diverse condition responsive (e.g., temperature and pressure, speed and level, etc.)415/48, For adjustment of runner, shaft, vane or blade415/119, WITH SOUND OR VIBRATORY WAVE ABSORBING OR PREVENTING MEANS OR ARRANGEMENT415/150, Runner, shaft, or separate motor operated415/151Upstream of runnerExaminersPrimary: Look, Edward K.Assistant: Verdier, Christopher Attorney, Agent or FirmInternational ClassF25B 049/00AbstractA method of controlling a centrifugal compressor having a variable width diffuser section, the compressor being part of a chiller having a condenser and an evaporator, the method including the steps of defining the width of the diffuser which results in an optimum noise and performance level at given values of an operational parameter of the compressor, periodically sensing the operational parameter of the compressor, and periodically varying the diffuser width according to the sensed operational parameter to create a diffuser width that results in the optimum noise and performance levels at the sensed value of the operational parameter. The step of defining preferably defines the width based at least on the capacity at which the compressor is operating. The capacity is preferably determined by measuring the flow and temperature difference of the fluid passing through the evaporator. A control system for controlling the chiller system to minimize noise is also disclosed.Field of SearchMETHOD OF OPERATIONPlural diverse condition responsive (e.g., temperature and pressure, speed and level, etc.) Temperature or fluid force responsive member For adjustment of runner, shaft, vane or blade Fluid force responsive member controls working fluid Runner, shaft, or separate motor operated Upstream of runner INCLUDING CASING PART SELECTIVELY MOVABLE RELATIVE TO FIXED SUPPORT WITH SOUND OR VIBRATORY WAVE ABSORBING OR PREVENTING MEANS OR ARRANGEMENT Compressing, condensing and evaporating By external cooled liquid or holdover Compressor or its drive controlled By variable compressor output, e.g., unloading, staging, etc. | |
