Patents by Inventor Jean-Luc Caillat

Jean-Luc Caillat 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).

  • Patent number: 7654098
    Abstract: A system includes a scroll compressor having a first scroll member interleaved with a second scroll member to define at least two moving fluid pockets that decrease in size as they move from a radially outer position to a radially inner position. A valve in fluid communication with the compression chamber is movable between an open state allowing fluid to the compression chamber and a closed state preventing fluid to the compression chamber. A controller continuously cycles the valve between the open state and the closed state at a rate that is faster than a thermal time constant of a load on the system.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: February 2, 2010
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Hung M Pham, Abtar Singh, Jean-Luc Caillat, Mark Bass
  • Patent number: 7419365
    Abstract: A compressor includes an orbiting member and a non-orbiting member mounted relative the orbiting member to define first and second chambers disposed between the orbiting and non-orbiting members. The non-orbiting member forms a seal to generally prevent fluid communication between the first and second chambers when in a first position and breaks the seal to allow fluid communication between the first and second chambers when in a second position. A structure supports the orbiting and non-orbiting members for relative orbital movement therebetween and a time pulsed actuation apparatus is coupled to the structure and configured to selectively break the seal.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: September 2, 2008
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Hung M Pham, Abtar Singh, Jean-Luc Caillat, Mark Bass
  • Patent number: 7389649
    Abstract: A control system for a cooling system includes a first sensor for sensing a property indicative of demand for cooling and a controller coupled to the sensor. The controller produces the variable duty cycle control signal in response to the property and causes the compressor and valve to vary a cooling capacity of the cooling system in response to the variable duty cycle control signal. The sensor may sense the pressure, temperature, or both. The valve may be a suction-side pressure regulator or a liquid-side expansion valve of the solenoid or stepper type.
    Type: Grant
    Filed: December 8, 2003
    Date of Patent: June 24, 2008
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Hung M Pham, Abtar Singh, Jean-Luc Caillat, Mark Bass
  • Publication number: 20080053136
    Abstract: A method includes operating a compressor of a heat pump system and is selectively providing vapor to a vapor injection port of the compressor via a vapor injection line and vapor injection valve. The method further includes determining a frost condition of a first and second heat exchanger of the heat pump system and closing a vapor injection valve to prevent fluid flow into the compressor at the vapor injection port. A direction of refrigerant flow is reversed to direct vaporized refrigerant to the one of said first and second heat exchangers experiencing the frost condition. The vapor injection valve is opened after a first predetermined time period following reversal of the refrigerant flow. The method further includes closing the vapor injection valve and reversing a direction of refrigerant flow within the heat pump system once the vapor injection valve is closed for a second predetermined time period.
    Type: Application
    Filed: October 31, 2007
    Publication date: March 6, 2008
    Applicant: Emerson Climate Technologies, Inc.
    Inventors: Hung Pham, Jean-Luc Caillat, Ronald Van Hoose
  • Publication number: 20080047283
    Abstract: A heat pump operable in a heating mode and in a cooling mode includes a first heat exchanger and a second heat exchanger. A compressor is in fluid communication with each of the first and second heat exchangers and includes a vapor injection port. A third heat exchanger is in fluid communication with each of the first and second heat exchangers and the compressor and includes a liquid side having an inlet and an outlet and a vapor side having an inlet and an outlet. A vapor injection line fluidly couples the vapor injection port and the outlet of the vapor side. An expansion device is in fluid communication with the inlet of the vapor side to control a volume of liquid entering the vapor side and to expand the liquid prior to entering the vapor side.
    Type: Application
    Filed: October 31, 2007
    Publication date: February 28, 2008
    Applicant: Emerson Climate Technologies, Inc.
    Inventors: Hung Pham, Jean-Luc Caillat, Ronald Van Hoose
  • Publication number: 20080047292
    Abstract: A method includes operating a compressor with a vapor injection system and selectively supplying vapor to the compressor during compressor operation through actuation of a first control valve. The method further includes closing the first control valve to prevent vapor from entering the compressor for a first predetermined time period leading up to stopping operation of the compressor and stopping the compressor with the first control valve in the closed position. The compressor is started with the first control valve in the closed position and the first control valve is maintained in the closed position for a second predetermined time period following starting of the compressor. The first control valve is opened to supply vapor to the compressor after the second predetermined time period.
    Type: Application
    Filed: October 31, 2007
    Publication date: February 28, 2008
    Applicant: Emerson Climate Technologies, Inc.
    Inventors: Hung Pham, Jean-Luc Caillat, Ronald Van Hoose
  • Publication number: 20080047284
    Abstract: A heat pump system of the type which re-circulates refrigerant through a fluid circuit between a first heat exchanger and a second heat exchanger includes a compressor coupled to the fluid circuit and a vapor injection system including a vessel fluidly coupled to the first and second heat exchangers and to a vapor injection port of the compressor. The vessel is operable as a receiver in a cooling mode of the heat pump system and is operable as a flash tank in a heating mode of the heat pump system.
    Type: Application
    Filed: October 31, 2007
    Publication date: February 28, 2008
    Applicant: Emerson Climate Technologies, Inc.
    Inventors: Hung Pham, Jean-Luc Caillat, Ronald Van Hoose
  • Publication number: 20070251256
    Abstract: A flash tank for a heat pump operable in a heating mode and a cooling mode includes a shell having a middle portion disposed between a top portion and a bottom portion, with the top portion, bottom portion, and middle portion cooperating to define an inner volume of the shell. A first port is in fluid communication with the inner volume and functions as an inlet in the heating mode and as an outlet in the cooling mode. A second port is in fluid communication with the inner volume and functions as an inlet in the cooling mode and as an outlet in the heating mode. Flow control devices and check valves are fluidly coupled to control the tank as a flash tank in heating mode and as a receiver in cooling mode.
    Type: Application
    Filed: March 19, 2007
    Publication date: November 1, 2007
    Inventors: Hung Pham, Jean-Luc Caillat, Ronald Van Hoose
  • Publication number: 20070101740
    Abstract: A system and method includes a vapor-compression circuit having a working fluid flowing therethrough, a thermoelectric device positioned in a heat-transfer relation with the working fluid, and a power supply providing current to the thermoelectric device to generate a heat flow through the thermoelectric device.
    Type: Application
    Filed: January 30, 2006
    Publication date: May 10, 2007
    Inventors: Masao Akei, Kirill Ignatiev, Nagaraj Jayanth, Hung Pham, Jean-Luc Caillat
  • Publication number: 20070101737
    Abstract: A vapor-compression circuit may be used to meet the temperature/load demands for conditioning one or more spaces. Excess heat generated in the vapor-compression circuit may be utilized to generate an electric current that may power other components of the vapor-compression circuit. A thermoelectric device may be placed in heat-transferring contact with the excess heat and generate the electrical current. The electric current generated may be used to power another thermoelectric device to provide further cooling or heating of a fluid in heat-transferring relation therewith to supplement the vapor-compression circuit and the conditioning of the space.
    Type: Application
    Filed: November 9, 2005
    Publication date: May 10, 2007
    Inventors: Masao Akei, Kirill Ignatiev, Nagaraj Jayanth, Hung Pham, Jean-Luc Caillat
  • Publication number: 20070101738
    Abstract: A system and method includes a vapor compression circuit having a source of waste heat. A thermoelectric device is positioned in heat-transfer relation to the source of waste heat and generates an electric current that powers a load.
    Type: Application
    Filed: January 30, 2006
    Publication date: May 10, 2007
    Inventors: Masao Akei, Kirill Ignatiev, Nagaraj Jayanth, Hung Pham, Jean-Luc Caillat
  • Publication number: 20070101739
    Abstract: A system and method includes a thermoelectric device in heat-transfer relation with a working fluid flowing through a vapor compression circuit. Heat is transferred from the working fluid to a first fluid medium and then from the first fluid medium to a second fluid medium.
    Type: Application
    Filed: January 30, 2006
    Publication date: May 10, 2007
    Inventors: Masao Akei, Kirill Ignatiev, Nagaraj Jayanth, Hung Pham, Jean-Luc Caillat
  • Publication number: 20070022771
    Abstract: A system includes a scroll compressor having a first scroll member interleaved with a second scroll member to define at least two moving fluid pockets that decrease in size as they move from a radially outer position to a radially inner position. A valve in fluid communication with the compression chamber is movable between an open state allowing fluid to the compression chamber and a closed state preventing fluid to the compression chamber. A controller continuously cycles the valve between the open state and the closed state at a rate that is faster than a thermal time constant of a load on the system.
    Type: Application
    Filed: September 28, 2006
    Publication date: February 1, 2007
    Inventors: Hung Pham, Abtar Singh, Jean-Luc Caillat, Mark Bass
  • Publication number: 20060288715
    Abstract: A compressor includes an orbiting member and a non-orbiting member mounted relative the orbiting member to define first and second chambers disposed between the orbiting and non-orbiting members. The non-orbiting member forms a seal to generally prevent fluid communication between the first and second chambers when in a first position and breaks the seal to allow fluid communication between the first and second chambers when in a second position. A structure supports the orbiting and non-orbiting members for relative orbital movement therebetween and a time pulsed actuation apparatus is coupled to the structure and configured to selectively break the seal.
    Type: Application
    Filed: August 31, 2006
    Publication date: December 28, 2006
    Inventors: Hung Pham, Abtar Singh, Jean-Luc Caillat, Mark Bass
  • Publication number: 20040123612
    Abstract: A control system for a cooling system includes a first sensor for sensing a property indicative of demand for cooling and a controller coupled to the sensor. The controller produces the variable duty cycle control signal in response to the property and causes the compressor and valve to vary a cooling capacity of the cooling system in response to the variable duty cycle control signal. The sensor may sense the pressure, temperature, or both. The valve may be a suction-side pressure regulator or a liquid-side expansion valve of the solenoid or stepper type.
    Type: Application
    Filed: December 8, 2003
    Publication date: July 1, 2004
    Inventors: Hung M. Pham, Abtar Singh, Jean-Luc Caillat, Mark Bass
  • Patent number: 6412293
    Abstract: An improved continuous capacity modulation system for scroll-type compressors is disclosed in which a valve body of a solenoid valve assembly is secured to the inner wall of the hermetic shell and the actuating coil is mounted on the outer surface thereof. The actuating coil includes a plunger/valve member which cooperates with passages provided in the valve body to selectively actuate the capacity modulation arrangement utilizing compressed fluid. The construction offers the advantage that all fluid pressure lines are located within the hermetic shell and thus protected from potential damage, the solenoid coil may be easily changed/replaced to accommodate different available operating voltages and/or malfunction thereof and the system can be easily tested prior to final welding of the outer shell. The actuating coil is controlled by Pulse Width Modulation to reduce the load demand of the compressor during times when load shedding is required.
    Type: Grant
    Filed: October 11, 2000
    Date of Patent: July 2, 2002
    Assignee: Copeland Corporation
    Inventors: Hung M. Pham, Jean-Luc Caillat
  • Publication number: 20010049942
    Abstract: A diagnostic system includes a controller adapted for coupling to a compressor or electronic stepper regulator valve. The controller produces a variable duty cycle control signal to adjust the capacity of the compressor or valve position of the electronic stepper regulator valve as a function of demand for cooling. The diagnostic system further includes a diagnostic module coupled to the controller for monitoring and comparing the duty cycle with at least one predetermined fault value indicative of a system fault condition and an alert module responsive to the diagnostic module for issuing an alert signal when the duty cycle bears a predetermined relationship to the fault value.
    Type: Application
    Filed: June 21, 2001
    Publication date: December 13, 2001
    Inventors: Hung M. Pham, Abtar Singh, Jean-Luc Caillat, Mark Bass
  • Patent number: RE40830
    Abstract: A pulsed modulated capacity modulation system for refrigeration, air conditioning or other types of compressors is disclosed in which suitable valving is provided which operates to cyclically block flow of suction gas to a compressor. A control system is provided which is adapted to control both the frequency of cycling as well as the relative duration of the on and off time periods of each cycle in accordance with sensed system operating conditions so as to maximize the efficiency of the system. Preferably the cycle time will be substantially less than the time constant of the load and will enable substantially continuously variable capacity modulation from substantially zero capacity to the full capacity of the compressor. Additional controls may be incorporated to modify one or more of the motor operating parameters to improve the efficiency of the motor during periods of reduced load.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: July 7, 2009
    Assignee: Emerson Climate Technologies, Inc.
    Inventor: Jean-Luc Caillat
  • Patent number: RE42006
    Abstract: A diagnostic system includes a controller adapted for coupling to a compressor or electronic stepper regulator valve. The controller produces a variable duty cycle control signal to adjust the capacity of the compressor or valve position of the electronic stepper regulator valve as a function of demand for cooling. The diagnostic system further includes a diagnostic module coupled to the controller for monitoring and comparing the duty cycle with at least one predetermined fault value indicative of a system fault condition and an alert module responsive to the diagnostic module for issuing an alert signal when the duty cycle bears a predetermined relationship to the fault value.
    Type: Grant
    Filed: January 16, 2004
    Date of Patent: December 28, 2010
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Hung M. Pham, Abtar Singh, Jean-Luc Caillat, Mark Bass
  • Patent number: RE44636
    Abstract: A pulsed modulated capacity modulation system for refrigeration, air conditioning or other types of compressors is disclosed in which suitable valving is provided which operates to cyclically block flow of suction gas to a compressor. A control system is provided which is adapted to control both the frequency of cycling as well as the relative duration of the on and off time periods of each cycle in accordance with sensed system operating conditions so as to maximize the efficiency of the system. Preferably the cycle time will be substantially less than the time constant of the load and will enable substantially continuously variable capacity modulation from substantially zero capacity to the full capacity of the compressor. Additional controls may be incorporated to modify one or more of the motor operating parameters to improve the efficiency of the motor during periods of reduced load.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: December 10, 2013
    Assignee: Emerson Climate Technologies, Inc.
    Inventor: Jean-Luc Caillat