Patents by Inventor AUGUSTO J. PEREIRA ZIMMERMANN
AUGUSTO J. PEREIRA ZIMMERMANN 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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Patent number: 10422562Abstract: An apparatus includes a first compressor, a first load, a second compressor, a second load, and a heat exchanger. The first compressor compresses a first refrigerant. The first load uses the first refrigerant to remove heat from a space proximate the first load. The first load sends the first refrigerant to the first compressor. The second compressor compresses a second refrigerant. The second load uses the second refrigerant to remove heat from a space proximate the second load. The second load sends the second refrigerant to the second compressor. The heat exchanger receives the first refrigerant from the first compressor and receives the second refrigerant from the second compressor. The heat exchanger transfers heat from the first refrigerant to the second refrigerant. The heat exchanger discharges the first refrigerant to the first load and discharges the second refrigerant to the second compressor.Type: GrantFiled: February 14, 2017Date of Patent: September 24, 2019Assignee: Heatcraft Refrigeration Products LLCInventors: Augusto J. Pereira Zimmermann, Robert H. Austin, Jr.
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Patent number: 10352605Abstract: An apparatus includes a first compressor, a first load, a second compressor, a second load, a first heat exchanger, and a second heat exchanger. The first compressor compresses a first refrigerant. The first load uses the first refrigerant to remove heat from a space proximate the first load. The first load sends the first refrigerant to the first compressor. The second compressor compresses a second refrigerant. The second load uses the second refrigerant to remove heat from a space proximate the second load. The second load sends the second refrigerant to the second compressor. The first heat exchanger receives the first refrigerant from the first compressor. The first heat exchanger transfers heat from the first refrigerant to a fluid. The second heat exchanger receives the second refrigerant from the second compressor. The second heat exchanger transfers heat from the fluid to the second refrigerant.Type: GrantFiled: February 14, 2017Date of Patent: July 16, 2019Assignee: Heatcraft Refrigerator Products, LLCInventors: Augusto J. Pereira Zimmermann, Robert H. Austin, Jr.
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Patent number: 10295238Abstract: An apparatus includes a compressor, a load, a heat exchanger, and a heater. The compressor compresses a refrigerant. The load uses the refrigerant to remove heat from a space proximate the load. The load sends the refrigerant to the compressor. The heat exchanger receives the refrigerant from the compressor. The heat exchanger transfers heat from a fluid to the refrigerant. The heat exchanger discharges the refrigerant to the compressor. The heater adds heat to the fluid.Type: GrantFiled: February 14, 2017Date of Patent: May 21, 2019Assignee: Heatcraft Refrigeration Products LLCInventors: Augusto J. Pereira Zimmermann, Robert H. Austin, Jr.
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Publication number: 20180231289Abstract: An apparatus includes a first compressor, a first load, a second compressor, a second load, and a heat exchanger. The first compressor compresses a first refrigerant. The first load uses the first refrigerant to remove heat from a space proximate the first load. The first load sends the first refrigerant to the first compressor. The second compressor compresses a second refrigerant. The second load uses the second refrigerant to remove heat from a space proximate the second load. The second load sends the second refrigerant to the second compressor. The heat exchanger receives the first refrigerant from the first compressor and receives the second refrigerant from the second compressor. The heat exchanger transfers heat from the first refrigerant to the second refrigerant. The heat exchanger discharges the first refrigerant to the first load and discharges the second refrigerant to the second compressor.Type: ApplicationFiled: February 14, 2017Publication date: August 16, 2018Inventors: Augusto J. Pereira Zimmermann, Robert H. Austin, JR.
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Publication number: 20180231288Abstract: An apparatus includes a compressor, a load, a heat exchanger, and a heater. The compressor compresses a refrigerant. The load uses the refrigerant to remove heat from a space proximate the load. The load sends the refrigerant to the compressor. The heat exchanger receives the refrigerant from the compressor. The heat exchanger transfers heat from a fluid to the refrigerant. The heat exchanger discharges the refrigerant to the compressor. The heater adds heat to the fluid.Type: ApplicationFiled: February 14, 2017Publication date: August 16, 2018Inventors: Augusto J. Pereira Zimmermann, Robert H. Austin, JR.
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Publication number: 20180231290Abstract: An apparatus includes a first compressor, a first load, a second compressor, a second load, a first heat exchanger, and a second heat exchanger. The first compressor compresses a first refrigerant. The first load uses the first refrigerant to remove heat from a space proximate the first load. The first load sends the first refrigerant to the first compressor. The second compressor compresses a second refrigerant. The second load uses the second refrigerant to remove heat from a space proximate the second load. The second load sends the second refrigerant to the second compressor. The first heat exchanger receives the first refrigerant from the first compressor. The first heat exchanger transfers heat from the first refrigerant to a fluid. The second heat exchanger receives the second refrigerant from the second compressor. The second heat exchanger transfers heat from the fluid to the second refrigerant.Type: ApplicationFiled: February 14, 2017Publication date: August 16, 2018Inventors: Augusto J. Pereira Zimmermann, Robert H. Austin, JR.
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Patent number: 9982919Abstract: A system includes a flash tank, a load, a first compressor, a second compressor, and a liquid injection line. The flash tank stores a refrigerant. The load uses the refrigerant from the flash tank to remove heat from a space proximate the load. The first compressor compresses the refrigerant from the load. The second compressor compresses the refrigerant from the first compressor. The liquid injection line is coupled to the flash tank and to the second compressor and sends a liquid refrigerant from the flash tank to mix with the refrigerant from the first compressor before the refrigerant from the first compressor is received by the second compressor.Type: GrantFiled: January 19, 2016Date of Patent: May 29, 2018Assignee: Heatcraft Refrigeration Products LLCInventors: Masood Ali, Augusto J. Pereira Zimmermann
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Patent number: 9964348Abstract: A system includes a temperature sensor, a pressure sensor, and a controller. The temperature sensor measures a temperature of a refrigerant at a compressor. The compressor receives the refrigerant from a second compressor. The pressure sensor measures a pressure of the refrigerant at the compressor. The controller receives one or more of the measured temperature and the measured pressure and determines that one or more of the measured temperature and the measured pressure exceed a threshold. In response to that determination, the controller actuates a pulse valve coupled to a liquid injection line. The pulse valve controls the flow of a liquid refrigerant from a flash tank through the liquid injection line to mix with the refrigerant at the compressor.Type: GrantFiled: January 19, 2016Date of Patent: May 8, 2018Assignee: Heatcraft Refrigeration Products LLCInventors: Masood Ali, Augusto J. Pereira Zimmermann
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Patent number: 9964339Abstract: A system includes a flash tank, a load, a first compressor, a second compressor, a refrigerant routing line, and a flash gas bypass line. The flash tank stores a refrigerant. The load uses the refrigerant from the flash tank to remove heat from a space proximate the load. The first compressor compresses the refrigerant from the load. The refrigerant routing line routes the refrigerant from the first compressor to the flash tank below a liquid level line of the flash tank. The flash gas bypass line is coupled to the flash tank and sends the refrigerant as a flash gas from the flash tank to the second compressor. The second compressor compresses the refrigerant.Type: GrantFiled: January 19, 2016Date of Patent: May 8, 2018Assignee: Heatcraft Refrigeration Products LLCInventors: Masood Ali, Augusto J. Pereira Zimmermann
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Patent number: 9897363Abstract: The present application provides a carbon dioxide based refrigeration system. The carbon dioxide based refrigeration system may include a mid temperature cycle with a mid temperature ejector, a low temperature cycle with a low temperature ejector, and a gas cooler/condenser in communication with the mid temperature cycle and the low temperature cycle.Type: GrantFiled: November 17, 2014Date of Patent: February 20, 2018Assignee: Heatcraft Refrigeration Products LLCInventor: Augusto J. Pereira Zimmermann
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Patent number: 9869492Abstract: A system includes a high side heat exchanger, a modulating valve, a flash tank, and a refrigeration unit. The high side heat exchanger is configured to remove heat from refrigerant. The modulating valve is configured to control the flow of refrigerant from the high side heat exchanger to both a heat exchanger and a flash tank. The flash tank is configured to store refrigerant from the heat exchanger and from the high side heat exchanger. The refrigeration unit is configured to receive refrigerant from the flash tank.Type: GrantFiled: October 12, 2015Date of Patent: January 16, 2018Assignee: Heatcraft Refrigeration Products LLCInventor: Augusto J. Pereira Zimmermann
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Patent number: 9726411Abstract: The present application provides a refrigeration system using a flow of a carbon dioxide refrigerant. The refrigeration system may include a flash tank, a number of temperature suction compressors for a temperature suction cycle, and a flash gas bypass system positioned between the flash tank and the cycle compressors. The flash gas bypass system may include one or more oversized flash gas compressors so as to alternate between the temperature suction cycle and a flash tank suction cycle.Type: GrantFiled: March 4, 2015Date of Patent: August 8, 2017Assignee: Heatcraft Refrigeration Products L.L.C.Inventor: Augusto J. Pereira Zimmermann
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Publication number: 20170205120Abstract: A system includes a flash tank, a load, a first compressor, a second compressor, a refrigerant routing line, and a flash gas bypass line. The flash tank stores a refrigerant. The load uses the refrigerant from the flash tank to remove heat from a space proximate the load. The first compressor compresses the refrigerant from the load. The refrigerant routing line routes the refrigerant from the first compressor to the flash tank below a liquid level line of the flash tank. The flash gas bypass line is coupled to the flash tank and sends the refrigerant as a flash gas from the flash tank to the second compressor. The second compressor compresses the refrigerant.Type: ApplicationFiled: January 19, 2016Publication date: July 20, 2017Inventors: Masood Ali, Augusto J. Pereira Zimmermann
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Publication number: 20170102169Abstract: A system includes a high side heat exchanger, a modulating valve, a flash tank, and a refrigeration unit. The high side heat exchanger is configured to remove heat from refrigerant. The modulating valve is configured to control the flow of refrigerant from the high side heat exchanger to both a heat exchanger and a flash tank. The flash tank is configured to store refrigerant from the heat exchanger and from the high side heat exchanger. The refrigeration unit is configured to receive refrigerant from the flash tank.Type: ApplicationFiled: October 12, 2015Publication date: April 13, 2017Inventor: Augusto J. Pereira Zimmermann
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Publication number: 20170074550Abstract: A system includes a flash tank, a load, a first compressor, a second compressor, and a liquid injection line. The flash tank stores a refrigerant. The load uses the refrigerant from the flash tank to remove heat from a space proximate the load. The first compressor compresses the refrigerant from the load. The second compressor compresses the refrigerant from the first compressor. The liquid injection line is coupled to the flash tank and to the second compressor and sends a liquid refrigerant from the flash tank to mix with the refrigerant from the first compressor before the refrigerant from the first compressor is received by the second compressor.Type: ApplicationFiled: January 19, 2016Publication date: March 16, 2017Inventors: Masood Ali, Augusto J. Pereira Zimmermann
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Publication number: 20170074567Abstract: A system includes a temperature sensor, a pressure sensor, and a controller. The temperature sensor measures a temperature of a refrigerant at a compressor. The compressor receives the refrigerant from a second compressor. The pressure sensor measures a pressure of the refrigerant at the compressor. The controller receives one or more of the measured temperature and the measured pressure and determines that one or more of the measured temperature and the measured pressure exceed a threshold. In response to that determination, the controller actuates a pulse valve coupled to a liquid injection line. The pulse valve controls the flow of a liquid refrigerant from a flash tank through the liquid injection line to mix with the refrigerant at the compressor.Type: ApplicationFiled: January 19, 2016Publication date: March 16, 2017Inventors: Masood Ali, Augusto J. Pereira Zìmmermann
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Publication number: 20160258662Abstract: The present application provides a refrigeration system using a flow of a carbon dioxide refrigerant. The refrigeration system may include a flash tank, a number of temperature suction compressors for a temperature suction cycle, and a flash gas bypass system positioned between the flash tank and the cycle compressors. The flash gas bypass system may include one or more oversized flash gas compressors so as to alternate between the temperature suction cycle and a flash tank suction cycle.Type: ApplicationFiled: March 4, 2015Publication date: September 8, 2016Inventor: Augusto J. Pereira Zimmermann
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Publication number: 20160231063Abstract: The present application provides a thermosyphon for use with a refrigeration system. The thermosyphon may include a primary flow inlet, an angled secondary flow inlet, and a mixed flow outlet. The angled secondary flow inlet may include an angle ?1 of about forty-five degrees or less with respect to the mixed flow outlet.Type: ApplicationFiled: January 27, 2016Publication date: August 11, 2016Inventors: Augusto J. Pereira Zimmermann, Dale N. Sizemore, Robert H. Austin, JR.
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Publication number: 20160138847Abstract: The present application provides a carbon dioxide based refrigeration system. The carbon dioxide based refrigeration system may include a mid temperature cycle with a mid temperature ejector, a low temperature cycle with a low temperature ejector, and a gas cooler/condenser in communication with the mid temperature cycle and the low temperature cycle.Type: ApplicationFiled: November 17, 2014Publication date: May 19, 2016Inventor: AUGUSTO J. PEREIRA ZIMMERMANN