Patents by Inventor Richard Allen MIU

Richard Allen MIU has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Liquid slugging detection and protection
    Patent number: 10627146
    Abstract: A system includes a sensor and a controller for a refrigeration or HVAC system having a compressor. The sensor senses a temperature of the compressor during operation of the compressor. The controller is configured to determine a rate of change of the temperature relative to time and to perform one or more procedures to protect the compressor based on the rate of change of the temperature. The one or more procedures to protect the compressor include shutting down the compressor, throttling a pressure regulator valve of an evaporator associated with the compressor, adjusting an expansion valve associated with the evaporator, reducing speed of the compressor, and partially or wholly unloading the compressor.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: April 21, 2020
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Frank S. Wallis, Randall Knick, Diane Belinda Patrizio, Richard Allen Miu
  • Compressor temperature control systems and methods
    Patent number: 10180138
    Abstract: A system for controlling capacity of a compressor comprises a minimum determination module (204) selectively increasing a minimum capacity of a compressor when a temperature of the compressor is greater than a first predetermined temperature; and a control module (104) increasing an actual capacity of the compressor in response to an increase in the minimum capacity. A method for controlling capacity of a compressor is also disclosed. The system and method modulate the capacity of the compressor according to the different temperatures.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: January 15, 2019
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Keith Michael Knippen, Guoping Wu, Richard Allen Miu, Michael J. Monnin
  • Liquid Slugging Detection And Protection
    Publication number: 20180106520
    Abstract: A system includes a sensor and a controller for a refrigeration or HVAC system having a compressor. The sensor senses a temperature of the compressor during operation of the compressor. The controller is configured to determine a rate of change of the temperature relative to time and to perform one or more procedures to protect the compressor based on the rate of change of the temperature. The one or more procedures to protect the compressor include shutting down the compressor, throttling a pressure regulator valve of an evaporator associated with the compressor, adjusting an expansion valve associated with the evaporator, reducing speed of the compressor, and partially or wholly unloading the compressor.
    Type: Application
    Filed: October 13, 2017
    Publication date: April 19, 2018
    Applicant: Emerson Climate Technologies, Inc.
    Inventors: Frank S. WALLIS, Randall KNICK, Diane Belinda PATRIZIO, Richard Allen MIU
  • COMPRESSOR TEMPERATURE CONTROL SYSTEMS AND METHODS
    Publication number: 20160298627
    Abstract: A system for controlling capacity of a compressor comprises a minimum determination module (204) selectively increasing a minimum capacity of a compressor when a temperature of the compressor is greater than a first predetermined temperature; and a control module (104) increasing an actual capacity of the compressor in response to an increase in the minimum capacity. A method for controlling capacity of a compressor is also disclosed. The system and method modulate the capacity of the compressor according to the different temperatures.
    Type: Application
    Filed: April 4, 2014
    Publication date: October 13, 2016
    Applicant: EMERSON CLIMATE TECHNOLOGIES, INC.
    Inventors: Keith Michael KNIPPEN, Guoping WU, Richard Allen MIU, Michael J. MONNIN