Patents by Inventor Martin Hötzel

Martin Hötzel 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).

  • Publication number: 20230373272
    Abstract: A thermal system for conditioning the supply air for a passenger compartment and for cooling components of a drive train of a motor vehicle, in particular a thermal management system. The system has a refrigerant circuit with a compressor, a first refrigerant-to-air heat exchanger for transferring heat via ambient air, which is formed to be operable as a condenser/gas cooler and evaporator, a second refrigerant-to-air heat exchanger operated as a first evaporator with an upstream first flow control device as well as a heat exchanger operated as a second evaporator with an upstream second flow control device.
    Type: Application
    Filed: November 30, 2021
    Publication date: November 23, 2023
    Inventors: Martin Hötzel, Martin Möhlenkamp, Navid Durrani
  • Publication number: 20230339293
    Abstract: A system for air-conditioning the air in a passenger compartment and for heat transfer by way of components of a power train, in particular an electric powertrain of a motor vehicle. The system exhibits one coolant circuit with two refrigerant-coolant heat exchangers and one coolant-air heat exchanger for heat transfer to the ambient air, as well as one refrigerant circuit with one first refrigerant-air heat exchanger for heating the supply air for the passenger compartment, one second refrigerant-air heat exchanger for heat transfer by way of the ambient air, with one upstream first expansion element, one first flow path with one third refrigerant-air heat exchanger for conditioning the supply air for the passenger compartment, with one upstream second expansion element and one second flow path with one first refrigerant-coolant heat exchanger with one upstream third expansion element.
    Type: Application
    Filed: May 27, 2021
    Publication date: October 26, 2023
    Inventors: Navid Durrani, Martin Hötzel
  • Patent number: 11752833
    Abstract: A system for air-conditioning air of a passenger compartment and for heat transfer with drive components of a motor vehicle. The system has a refrigerant circuit and a coolant circuit. The refrigerant circuit is formed with a compressor, a first refrigerant-coolant heat exchanger operated as a condenser/gas cooler, a refrigerant-air heat exchanger operated as an evaporator for conditioning supply air of the passenger compartment with an upstream expansion element, and a second refrigerant-coolant heat exchanger operated as an evaporator for heat transfer between a coolant for tempering the drive components of the motor vehicle and the refrigerant with an upstream expansion element, and with a bypass flow path around the heat exchangers operated as the evaporators on the low-pressure side. In addition to the first refrigerant-coolant heat exchanger, the coolant circuit has a coolant-air heat exchanger operated as a thermal heat exchanger for heating supply air of the passenger compartment.
    Type: Grant
    Filed: March 16, 2021
    Date of Patent: September 12, 2023
    Assignee: HANON SYSTEMS
    Inventors: Navid Durrani, Martin Hötzel, Tobias Haas
  • Patent number: 11446978
    Abstract: An air conditioning and battery cooling assembly with an A/C coolant circuit and an E-drivetrain coolant circuit as well as a refrigerant circuit, wherein the A/C coolant circuit and the E-drivetrain coolant circuit are coupled together across a 4/2-way coolant valve in such a way that the A/C coolant circuit and the E-drivetrain coolant circuit can be operated separately or can receive a flow in serial manner.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: September 20, 2022
    Assignee: MAGNA STEYR FAHRZEUGTECHNIK AG & CO KG
    Inventors: Christoph Bara, Navid Durrani, Martin Hötzel, Tobias Haas, Matthias Höfler
  • Patent number: 11407275
    Abstract: Heat flow management device for motor vehicles has a refrigerant circulation, a power train coolant circulation and a heating line heat carrier circulation. The refrigerant circulation includes a compressor, an indirect condenser, an expansion element, an ambient heat exchanger, an evaporator and a chiller. The power train coolant circulation includes a coolant pump, the chiller, an electric motor heat exchanger and a power train coolant radiator, wherein the heating line heat carrier circulation comprises a coolant pump, the indirect condenser and a heating heat exchanger, wherein the refrigerant circulation and the power train coolant circulation are directly thermally coupled with one another across the chiller. Refrigerant circulation and heating line heat carrier circulation are directly thermally coupled with one another across the indirect condenser.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: August 9, 2022
    Assignee: Hanon Systems
    Inventors: Navid Durrani, Martin Hötzel, Tobias Haas
  • Patent number: 11214126
    Abstract: An air-conditioning system of a motor vehicle having refrigerant circulation and coolant circulation. Refrigerant circulation comprises a compressor, a refrigerant-coolant heat exchanger operable as condenser/gas cooler for heat transfer between the refrigerant and the coolant, a first expansion element and a first refrigerant-air heat exchanger for conditioning the inflowing air for the passenger compartment. Coolant circulation is developed with a conveying device, a first coolant-air heat exchanger for heating the inflowing air for the passenger compartment, a second coolant-air heat exchanger and the refrigerant-coolant heat exchanger. Refrigerant circulation also includes a second refrigerant-air heat exchanger, operable exclusively as evaporator. Upstream of the second refrigerant-air heat exchanger in the direction of flow of the refrigerant, a second expansion element is disposed. The second expansion element and the second refrigerant-air heat exchanger are disposed within a first flow path.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: January 4, 2022
    Assignee: Hanon Systems
    Inventors: Martin Hötzel, Navid Durrani, Christoph Bara
  • Publication number: 20210291622
    Abstract: A system for air-conditioning air of a passenger compartment and for heat transfer with drive components of a motor vehicle. The system has a refrigerant circuit and a coolant circuit. The refrigerant circuit is formed with a compressor, a first refrigerant-coolant heat exchanger operated as a condenser/gas cooler, a refrigerant-air heat exchanger operated as an evaporator for conditioning supply air of the passenger compartment with an upstream expansion element, and a second refrigerant-coolant heat exchanger operated as an evaporator for heat transfer between a coolant for tempering the drive components of the motor vehicle and the refrigerant with an upstream expansion element, and with a bypass flow path around the heat exchangers operated as the evaporators on the low-pressure side. In addition to the first refrigerant-coolant heat exchanger, the coolant circuit has a coolant-air heat exchanger operated as a thermal heat exchanger for heating supply air of the passenger compartment.
    Type: Application
    Filed: March 16, 2021
    Publication date: September 23, 2021
    Inventors: Navid Durrani, Martin Hötzel, Tobias Haas
  • Patent number: 11104201
    Abstract: The invention relates to a multi-zone air conditioning system for vehicles (1) with several air conditioning zones (2), in particular for buses, characterized thereby that an air temperature control unit (3) is implemented to generate simultaneously warm air and cold air, wherein the cold air across a cold air duct (5) and the warm air across a warm air duct (6) extend separated from one another as a double conduit over the length of the vehicle (1) and that decentralized air mixing units (4) with at least one air outlet (20) are disposed along the double conduit and that the air outlets (20) are assigned to the air conditioning zones (2) of the vehicle (1).
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: August 31, 2021
    Assignee: HANON SYSTEMS
    Inventors: Martin Hötzel, Gerald Richter, Tobias Haas, Martin Schulze
  • Patent number: 10989451
    Abstract: A heat-exchanger including a device for separating oil from a coolant-oil mixture and cooling the oil and cooling and/or liquefying the coolant. The heat exchanger features a first area cooling and/or liquefying the coolant, and a second area cooling the oil. The heat exchanger further features at least two manifolds. The first area of the heat exchanger features flow channels guiding the coolant, and the second area of the heat exchanger features flow channels guiding the oil. The flow channels extend between the manifolds. Each of the flow channels has a respective outside flooded by a heat-absorbing fluid.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: April 27, 2021
    Assignee: HANON SYSTEMS
    Inventors: Navid Durrani, Toni Spies, Daniel Zens, Roberto Della Rovere, Herr René Junker, Christoph Bara, Martin Hötzel, Martina Paduch, Marc Graaf, Peter Heyl
  • Patent number: 10987997
    Abstract: A climate control system of a motor vehicle having a refrigeration circuit and a coolant circuit. The refrigeration circuit includes a compressor, a refrigerant-coolant heat exchanger operable as a condenser/gas cooler for heat exchange between the refrigerant and the coolant of the coolant circuit, and at least one first refrigerant-air heat exchanger for conditioning intake air for the passenger compartment having a first expansion element upstream in a flow direction of the refrigerant. The coolant circuit includes a conveyor device, a first coolant-air heat exchanger heating the intake air for the passenger compartment, and the refrigerant-coolant heat exchanger. A refrigerant-air heat exchanger for exchanging heat between the refrigerant and ambient air is provided. The refrigerant-air heat exchanger is arranged downstream of the first refrigerant-coolant heat exchanger in the flow direction of the refrigerant.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: April 27, 2021
    Assignee: HANON SYSTEMS
    Inventors: Martin Hötzel, Navid Durrani, Christoph Bara
  • Patent number: 10953727
    Abstract: An air conditioning system of a motor vehicle with a refrigeration circuit and with a coolant circuit. The refrigeration circuit includes a compressor, a refrigerant-coolant heat exchanger operable as a condenser/gas cooler for the heat exchange between the refrigerant and the coolant of the coolant circuit, a first expansion device, and a first refrigerant-air heat exchanger for conditioning the intake air for the passenger compartment. The coolant circuit includes a conveying device, a first coolant-air heat exchanger for heating the intake air for the passenger compartment and the refrigerant-coolant heat exchanger. The refrigeration circuit further includes a second refrigerant-air heat exchanger for conditioning the intake air for the passenger compartment with a second expansion device located upstream in flow direction of the refrigerant. The coolant circuit is formed with a second coolant-air heat exchanger for heating the intake air for the passenger compartment.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: March 23, 2021
    Assignee: HANON SYSTEMS
    Inventors: Martin Hötzel, Navid Durrani, Christoph Bara
  • Patent number: 10875385
    Abstract: A climate control system for conditioning air of a motor vehicle passenger compartment and a method for operating same includes a climate control unit with a housing with a first flow channel and a second flow channel for conducting air, a refrigerant circulation and first and second coolant circulation. Refrigerant circulation is implemented with refrigerant-air heat exchanger operable as evaporator independently of operating mode Refrigerant-air heat exchanger is disposed within housing of the climate control unit. First refrigerant-coolant heat exchanger operates as condenser/gas cooler independently of operating mode. Second refrigerant-coolant heat exchanger operates as evaporator independently of the operating mode are disposed outside of housing of climate control unit. First coolant circulation comprises second refrigerant-coolant heat exchanger and heat exchangers for conditioning components of power train and a battery heat exchanger.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: December 29, 2020
    Assignee: Hanon Systems
    Inventors: Navid Durrani, Martin Hötzel, Tobias Haas, Gerald Richter, Marc Graaf
  • Publication number: 20200247212
    Abstract: An air conditioning and battery cooling assembly with an A/C coolant circuit and an E-drivetrain coolant circuit as well as a refrigerant circuit, wherein the A/C coolant circuit and the E-drivetrain coolant circuit are coupled together across a 4/2-way coolant valve in such a way that the A/C coolant circuit and the E-drivetrain coolant circuit can be operated separately or can receive a flow in serial manner.
    Type: Application
    Filed: January 22, 2020
    Publication date: August 6, 2020
    Inventors: Christoph Bara, Navid Durrani, Martin Hötzel, Tobias Haas, Matthias Höfler
  • Publication number: 20200164720
    Abstract: A climate control system of a motor vehicle having a refrigeration circuit and a coolant circuit. The refrigeration circuit includes a compressor, a refrigerant-coolant heat exchanger operable as a condenser/gas cooler for heat exchange between the refrigerant and the coolant of the coolant circuit, and at least one first refrigerant-air heat exchanger for conditioning intake air for the passenger compartment having a first expansion element upstream in a flow direction of the refrigerant. The coolant circuit includes a conveyor device, a first coolant-air heat exchanger heating the intake air for the passenger compartment, and the refrigerant-coolant heat exchanger. A refrigerant-air heat exchanger for exchanging heat between the refrigerant and ambient air is provided. The refrigerant-air heat exchanger is arranged downstream of the first refrigerant-coolant heat exchanger in the flow direction of the refrigerant.
    Type: Application
    Filed: November 19, 2019
    Publication date: May 28, 2020
    Inventors: Martin Hötzel, Navid Durrani, Christoph Bara
  • Publication number: 20190366800
    Abstract: Heat flow management device for motor vehicles has a refrigerant circulation, a power train coolant circulation and a heating line heat carrier circulation. The refrigerant circulation includes a compressor, an indirect condenser, an expansion element, an ambient heat exchanger, an evaporator and a chiller. The power train coolant circulation includes a coolant pump, the chiller, an electric motor heat exchanger and a power train coolant radiator, wherein the heating line heat carrier circulation comprises a coolant pump, the indirect condenser and a heating heat exchanger, wherein the refrigerant circulation and the power train coolant circulation are directly thermally coupled with one another across the chiller. Refrigerant circulation and heating line heat carrier circulation are directly thermally coupled with one another across the indirect condenser.
    Type: Application
    Filed: May 14, 2019
    Publication date: December 5, 2019
    Inventors: Navid Durrani, Martin Hötzel, Tobias Haas
  • Publication number: 20190263223
    Abstract: The invention relates to a climate control system (1) for conditioning the air of a motor vehicle passenger compartment. The climate control system (1), developed for operation in chiller mode, in heat pump mode as well as in reheat mode, comprises a climate control unit (2) with a housing (3) with a first flow channel (4) and a second flow channel (5) for conducting air, a refrigerant circulation (20) as well as a first coolant circulation (40) and a second coolant circulation (60).
    Type: Application
    Filed: February 13, 2019
    Publication date: August 29, 2019
    Inventors: Navid DURRANI, Martin HÖTZEL, Tobias HAAS, Gerald RICHTER, Marc GRAAF
  • Publication number: 20190160909
    Abstract: The invention relates to a multi-zone air conditioning system for vehicles (1) with several air conditioning zones (2), in particular for buses, characterized thereby that an air temperature control unit (3) is implemented to generate simultaneously warm air and cold air, wherein the cold air across a cold air duct (5) and the warm air across a warm air duct (6) extend separated from one another as a double conduit over the length of the vehicle (1) and that decentralized air mixing units (4) with at least one air outlet (20) are disposed along the double conduit and that the air outlets (20) are assigned to the air conditioning zones (2) of the vehicle (1).
    Type: Application
    Filed: November 6, 2018
    Publication date: May 30, 2019
    Inventors: Martin Hötzel, Gerald Richter, Tobias Haas, Martin Schulze
  • Publication number: 20190061471
    Abstract: An air conditioning system of a motor vehicle with a refrigeration circuit and with a coolant circuit. The refrigeration circuit includes a compressor, a refrigerant-coolant heat exchanger operable as a condenser/gas cooler for the heat exchange between the refrigerant and the coolant of the coolant circuit, a first expansion device, and a first refrigerant-air heat exchanger for conditioning the intake air for the passenger compartment. The coolant circuit includes a conveying device, a first coolant-air heat exchanger for heating the intake air for the passenger compartment and the refrigerant-coolant heat exchanger. The refrigeration circuit further includes a second refrigerant-air heat exchanger for conditioning the intake air for the passenger compartment with a second expansion device located upstream in flow direction of the refrigerant. The coolant circuit is formed with a second coolant-air heat exchanger for heating the intake air for the passenger compartment.
    Type: Application
    Filed: August 21, 2018
    Publication date: February 28, 2019
    Inventors: Martin Hötzel, Navid Durrani, Christoph Bara
  • Publication number: 20180319254
    Abstract: An air-conditioning system of a motor vehicle having refrigerant circulation and coolant circulation. Refrigerant circulation comprises a compressor, a refrigerant-coolant heat exchanger operable as condenser/gas cooler for heat transfer between the refrigerant and the coolant, a first expansion element and a first refrigerant-air heat exchanger for conditioning the inflowing air for the passenger compartment. Coolant circulation is developed with a conveying device, a first coolant-air heat exchanger for heating the inflowing air for the passenger compartment, a second coolant-air heat exchanger and the refrigerant-coolant heat exchanger. Refrigerant circulation also includes a second refrigerant-air heat exchanger, operable exclusively as evaporator. Upstream of the second refrigerant-air heat exchanger in the direction of flow of the refrigerant, a second expansion element is disposed. The second expansion element and the second refrigerant-air heat exchanger are disposed within a first flow path.
    Type: Application
    Filed: April 12, 2018
    Publication date: November 8, 2018
    Inventors: Martin Hötzel, Navid Durrani, Christoph Bara
  • Publication number: 20170167764
    Abstract: A device for separating oil from a coolant-oil mixture and cooling the oil and cooling and/or liquefying the coolant in a cooling circuit. The circuit features a compressor and a heat exchanger positioned downstream from the compressor in the direction of flow of the coolant and a device for separating the oil. The heat exchanger features a first area cooling and/or liquefying the coolant, and a second area as a heat exchanger cooling the oil, the second area is a heat exchanger cooling the oil as an integral part of the heat exchanger. The heat exchanger further features at least two manifolds. The first area of the heat exchanger features flow channels guiding the coolant, and the second area of the heat exchanger features flow channels guiding the oil. The flow channels extend between the manifolds. Each of the flow channels has a respective outside flooded by a heat-absorbing fluid.
    Type: Application
    Filed: December 12, 2016
    Publication date: June 15, 2017
    Inventors: Navid Durrani, Toni Spies, Daniel Zens, Roberto Della Rovere, Herr René Junker, Christoph Bara, Martin Hötzel, Martina Paduch, Marc Graaf, Peter Heyl