Patents by Inventor Joseph J. ROZSNAKI
Joseph J. ROZSNAKI 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).
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Publication number: 20230358456Abstract: A system includes: a refrigerant compressor including an electric motor; a single printed circuit board (PCB); a drive that is disposed on the single PCB and that includes switches that control the application of power from a battery to the electric motor; and one or more processors disposed on the single PCB, the one or more processors configured to: determine a speed command for the refrigerant compressor based on one or more operating parameters; and actuate the switches of the drive based on the speed command.Type: ApplicationFiled: May 5, 2022Publication date: November 9, 2023Applicant: Emerson Climate Technologies, Inc.Inventors: Joseph J. ROZSNAKI, Donald R. WIESMANN
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Patent number: 11660934Abstract: A control module for a refrigeration system includes a startup mode control module that receives an off time of a compressor and an ambient temperature, determines whether the off time and the ambient temperature indicate that the compressor is in a flooded condition, and selects, based on the determination, between a normal startup mode and a flooded startup mode. A compressor control module transitions from the flooded startup mode to the normal startup mode after a predetermined period associated with operating in the flooded startup mode and operates the compressor at a first speed in the normal startup mode and operates the compressor at a second speed less than the first speed in the flooded startup mode.Type: GrantFiled: June 22, 2021Date of Patent: May 30, 2023Assignee: Emerson Climate Technologies, Inc.Inventors: Shawn W. Vehr, Joseph J. Rozsnaki
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Publication number: 20210316596Abstract: A control module for a refrigeration system includes a startup mode control module that receives an off time of a compressor and an ambient temperature, determines whether the off time and the ambient temperature indicate that the compressor is in a flooded condition, and selects, based on the determination, between a normal startup mode and a flooded startup mode. A compressor control module transitions from the flooded startup mode to the normal startup mode after a predetermined period associated with operating in the flooded startup mode and operates the compressor at a first speed in the normal startup mode and operates the compressor at a second speed less than the first speed in the flooded startup mode.Type: ApplicationFiled: June 22, 2021Publication date: October 14, 2021Inventors: Shawn W. VEHR, Joseph J. ROZSNAKI
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Patent number: 11046152Abstract: A refrigeration system includes a startup mode control module that receives an off time of a compressor and an ambient temperature, determines whether the off time and the ambient temperature indicate that the compressor is in a flooded condition, and selects, based on the determination, between a normal startup mode and a flooded startup mode. A compressor control module operates the compressor in the normal startup mode in response to the startup mode control module selecting the normal startup mode, operates the compressor in the flooded startup mode in response to the startup mode control module selecting the flooded startup mode, and transitions from the flooded startup mode to the normal startup mode after a predetermined period associated with operating in the flooded startup mode.Type: GrantFiled: February 21, 2020Date of Patent: June 29, 2021Assignee: Emerson Climate Technologies, Inc.Inventors: Shawn W. Vehr, Joseph J. Rozsnaki
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Patent number: 11014427Abstract: A system may include a compressor, a first heat exchanger, a first working fluid flow path, and a second working fluid flow path. The first heat exchanger receives working fluid discharged from the compressor. The first working fluid flow path may receive working fluid from the first heat exchanger and may include a second heat exchanger and a first control valve that is movable between a first position allowing fluid flow through the second heat exchanger and a second position restricting fluid flow through the second heat exchanger. The second working fluid flow path may receive working fluid from the first heat exchanger and may include a third heat exchanger and a second control valve that is movable between a first position allowing fluid flow through the third heat exchanger and a second position restricting fluid flow through the third heat exchanger.Type: GrantFiled: September 12, 2019Date of Patent: May 25, 2021Assignee: Emerson Climate Technologies, Inc.Inventors: Shawn W. Vehr, Joseph J. Rozsnaki, Louis G. Siefker
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Patent number: 10828963Abstract: A system is provided that includes mode, shore power, engine, and battery modules. The mode module determines whether to operate in a shore power, engine, or battery mode based on parameters. The shore power module, while in the shore power mode, runs a compressor at a speed based on a temperature within a container of a vehicle and limits the speed to a first speed. A battery is charged based on utility power while in the shore power mode. The engine module, while in the engine mode, limits the compressor speed to a second speed. The battery, while in the engine mode, is charged based on power received from an alternator/generator. The battery module, while in the battery mode, limits the compressor speed to a third speed. While in the battery mode, the battery is not being charged based on power from a shore power source and the alternator/generator.Type: GrantFiled: June 28, 2017Date of Patent: November 10, 2020Assignee: Emerson Climate Technologies, Inc.Inventors: Shawn W. Vehr, Joseph J. Rozsnaki, Louis Siefker
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Publication number: 20200189360Abstract: A refrigeration system includes a startup mode control module that receives an off time of a compressor and an ambient temperature, determines whether the off time and the ambient temperature indicate that the compressor is in a flooded condition, and selects, based on the determination, between a normal startup mode and a flooded startup mode. A compressor control module operates the compressor in the normal startup mode in response to the startup mode control module selecting the normal startup mode, operates the compressor in the flooded startup mode in response to the startup mode control module selecting the flooded startup mode, and transitions from the flooded startup mode to the normal startup mode after a predetermined period associated with operating in the flooded startup mode.Type: ApplicationFiled: February 21, 2020Publication date: June 18, 2020Inventors: Shawn W. Vehr, Joseph J. Rozsnaki
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Patent number: 10654341Abstract: A system including mode, engine, and battery modules, where the mode module determines whether to operate in an engine mode or a battery mode based on parameters. The engine module, while operating in the engine mode, runs a compressor at a first speed based on a temperature within a temperature controlled container of a vehicle and permits passage of refrigerant through eutectic plates independent of the temperature. A battery, while in the engine mode, is charged based on power received from an electrical source. The battery module, while operating in the battery mode and based on the temperature, runs the compressor at a second speed and prevents passage of the refrigerant through the eutectic plates. While in the battery mode, the battery is not being charged based on power from a shore power source and the electrical source from which power is received during the engine mode.Type: GrantFiled: May 23, 2019Date of Patent: May 19, 2020Assignee: Emerson Climate Technologies, Inc.Inventors: Shawn W. Vehr, Joseph J. Rozsnaki, Louis Siefker
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Publication number: 20200114733Abstract: A refrigeration system for a vehicle includes a compressor in fluid communication with a condenser and an evaporator. The compressor includes a variable speed motor and employs capacity modulation using refrigerant injection. The condenser and the evaporator include variable speed fans. The refrigeration system includes a battery to supply power to the refrigeration system. The battery is charged by one or more sources of power including the vehicle. The refrigeration system includes a control module configured to monitor one or more characteristics of the battery and to control one or more operating parameters of one or more of the compressor, the condenser, and the evaporator based on the one or more characteristics of the battery.Type: ApplicationFiled: December 10, 2019Publication date: April 16, 2020Applicant: Emerson Climate Technologies, Inc.Inventors: Shawn W. VEHR, Joseph J. ROZSNAKI, Joseph G. MARCINKIEWICZ
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Publication number: 20200001680Abstract: A system may include a compressor, a first heat exchanger, a first working fluid flow path, and a second working fluid flow path. The first heat exchanger receives working fluid discharged from the compressor. The first working fluid flow path may receive working fluid from the first heat exchanger and may include a second heat exchanger and a first control valve that is movable between a first position allowing fluid flow through the second heat exchanger and a second position restricting fluid flow through the second heat exchanger. The second working fluid flow path may receive working fluid from the first heat exchanger and may include a third heat exchanger and a second control valve that is movable between a first position allowing fluid flow through the third heat exchanger and a second position restricting fluid flow through the third heat exchanger.Type: ApplicationFiled: September 12, 2019Publication date: January 2, 2020Applicant: Emerson Climate Technologies, Inc.Inventors: Shawn W. VEHR, Joseph J. ROZSNAKI, Louis G. SIEFKER
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Publication number: 20190275866Abstract: A system including mode, engine, and battery modules, where the mode module determines whether to operate in an engine mode or a battery mode based on parameters. The engine module, while operating in the engine mode, runs a compressor at a first speed based on a temperature within a temperature controlled container of a vehicle and permits passage of refrigerant through eutectic plates independent of the temperature. A battery, while in the engine mode, is charged based on power received from an electrical source. The battery module, while operating in the battery mode and based on the temperature, runs the compressor at a second speed and prevents passage of the refrigerant through the eutectic plates. While in the battery mode, the battery is not being charged based on power from a shore power source and the electrical source from which power is received during the engine mode.Type: ApplicationFiled: May 23, 2019Publication date: September 12, 2019Inventors: Shawn W. VEHR, Joseph J. ROZSNAKI, Louis SIEFKER
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Patent number: 10315495Abstract: A system including mode and battery modules. The mode module, based on parameters, determines whether to operate in a shore power, engine or battery mode. One or more batteries are charged based on received utility power while in the shore power mode. The batteries, while in the engine mode, are charged based on power received from a power source. The battery module, while operating in the battery mode, determines a speed based on a temperature within a temperature controlled container of a vehicle and a state of charge of the batteries. The compressor is run at the speed while in the battery mode. While in the battery mode, the batteries are not being charged based on power from a shore power source and the power source from which power is received during the engine mode.Type: GrantFiled: June 28, 2017Date of Patent: June 11, 2019Assignee: EMERSON CLIMATE TECHNOLOGIES, INC.Inventors: Shawn W. Vehr, Joseph J. Rozsnaki
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Patent number: 10300766Abstract: A system including mode, engine, and battery modules, where the mode module determines whether to operate in an engine mode or a battery mode based on parameters. The engine module, while operating in the engine mode, runs a compressor at a first speed based on a temperature within a temperature controlled container of a vehicle and permits passage of refrigerant through eutectic plates independent of the temperature. A battery, while in the engine mode, is charged based on power received from an electrical source. The battery module, while operating in the battery mode and based on the temperature, runs the compressor at a second speed and prevents passage of the refrigerant through the eutectic plates. While in the battery mode, the battery is not being charged based on power from a shore power source and the electrical source from which power is received during the engine mode.Type: GrantFiled: June 28, 2017Date of Patent: May 28, 2019Assignee: Emerson Climate Technologies, Inc.Inventors: Shawn W. Vehr, Joseph J. Rozsnaki, Louis Siefker
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Publication number: 20180001746Abstract: A system is provided that includes mode, engine, and battery modules. The mode module is configured to determine whether to operate in an engine mode or a battery mode based on parameters. The engine module, while operating in the engine mode, runs a compressor at a first speed based on a temperature within a temperature controlled container of a vehicle and permits passage of refrigerant through eutectic plates independent of the temperature. A battery, while in the engine mode, is charged based on power received from an electrical source. The battery module, while operating in the battery mode and based on the temperature, runs the compressor at a second speed and prevents passage of the refrigerant through the eutectic plates. While in the battery mode, the battery is not being charged based on power from a shore power source and the electrical source from which power is received during the engine mode.Type: ApplicationFiled: June 28, 2017Publication date: January 4, 2018Applicant: Emerson Climate Technologies, Inc.Inventors: Shawn W. VEHR, Joseph J. ROZSNAKI, Louis SIEFKER
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Publication number: 20180001745Abstract: A system is provided that includes mode, shore power, engine, and battery modules. The mode module determines whether to operate in a shore power, engine, or battery mode based on parameters. The shore power module, while in the shore power mode, runs a compressor at a speed based on a temperature within a container of a vehicle and limits the speed to a first speed. A battery is charged based on utility power while in the shore power mode. The engine module, while in the engine mode, limits the compressor speed to a second speed. The battery, while in the engine mode, is charged based on power received from an alternator/generator. The battery module, while in the battery mode, limits the compressor speed to a third speed. While in the battery mode, the battery is not being charged based on power from a shore power source and the alternator/generator.Type: ApplicationFiled: June 28, 2017Publication date: January 4, 2018Applicant: Emerson Climate Technologies, Inc.Inventors: Shawn W. VEHR, Joseph J. ROZSNAKI, Louis SIEFKER
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Publication number: 20180001739Abstract: A system is provided that includes mode and battery modules. The mode module, based on parameters, determines whether to operate in a shore power, engine or battery mode. One or more batteries are charged based on received utility power while in the shore power mode. The batteries, while in the engine mode, are charged based on power received from a power source. The battery module, while operating in the battery mode, determines a speed based on a temperature within a temperature controlled container of a vehicle and a state of charge of the batteries. The compressor is run at the speed while in the battery mode. While in the battery mode, the batteries are not being charged based on power from a shore power source and the power source from which power is received during the engine mode.Type: ApplicationFiled: June 28, 2017Publication date: January 4, 2018Applicant: Emerson Climate Technologies, Inc.Inventors: Shawn W. VEHR, Joseph J. ROZSNAKI