Patents by Inventor Uwe Förster

Uwe Förster 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: 20250102207
    Abstract: A collector, preferably for a refrigerant circuit for a motor vehicle, which has: a tube, at least one cap, and an axial direction is provided. The tube has at least one narrowing and the at least one cap has at least one bulge (B1, B2, B3, B4). The at least one bulge (B1, B2, B3, B4) and the at least one narrowing abut one another such that the at least one cap seals the tube in the axial direction. The at least one cap does not move in the axial direction. The tube has an inner surface. At least one sealing element is placed between the at least one cap and the inner surface. There is no need for a mechanical processing to obtain the fit between the at least one sealing element and the inner surface.
    Type: Application
    Filed: September 25, 2024
    Publication date: March 27, 2025
    Inventors: Sven-Fabian ZEH, Hicham ROUHANA, Uwe FÖRSTER, Wolfgang GEIGER
  • Publication number: 20250050705
    Abstract: A reservoir for separating gaseous and liquid portions of a refrigerant from one another and/or collecting and storing the refrigerant is provided, preferably for a motor vehicle, containing a cylinder and an intake tube, in which the cylinder has a lower cylinder cap, the intake tube is inside the cylinder, and refrigerant flows through the intake tube. The intake tube has a reversal region for the refrigerant at the bottom, wherein the reversal region and the lower cylinder cap form an integral part, or are connected to one another. The reversal region contains an oil hole. The assembly (100) has an inner heat exchanger and a reservoir.
    Type: Application
    Filed: August 7, 2024
    Publication date: February 13, 2025
    Inventors: Hicham ROUHANA, Martin SIEVERS, Uwe FÖRSTER, Kiran PAGARE, David MAYOR TONDA
  • Patent number: 12196506
    Abstract: A heat exchanger including a tube/rib block made up of tubes and ribs, the tubes forming fluid channels for conducting a first fluid, in particular a refrigerant, and the ribs arranged between the tubes forming a second fluid channel for conducting a second fluid, such as, in particular, air, which flows around the tubes, a collector being arranged at at least one end of the tube/rib block, which communicates with the fluid channels of the tubes, the at least one collector being provided with a plate-type design and including at least one base plate and a cover plate, which are stacked and soldered in a sealed manner, a spacer for spacing the base plate at a distance from the cover plate and for distributing the first fluid in the collector being provided.
    Type: Grant
    Filed: August 9, 2022
    Date of Patent: January 14, 2025
    Assignee: Mahle International GmbH
    Inventors: Benjamin Nothdurft, Uwe Foerster, Martin Sievers, Gottfried Duerr, Patrick Walz, Nikolaj Bittner
  • Patent number: 12157349
    Abstract: A heat exchanger for a refrigerant circuit of an air conditioning system, with a heat exchanger block with a first fluid channel for the flow of refrigerant and with a second fluid channel for the flow of a fluid. The first fluid channel and the second fluid channel are in thermal contact for the exchange of heat. The heat exchanger also includes a third fluid channel having a refrigerant inlet and a refrigerant outlet for the flow of the refrigerant. The first fluid channel is in direct thermal contact with the third fluid channel for the exchange of heat between the refrigerant in the first fluid channel and the refrigerant in the third fluid channel.
    Type: Grant
    Filed: February 23, 2021
    Date of Patent: December 3, 2024
    Assignee: Mahle International GmbH
    Inventors: Michael Walter, Uwe Foerster
  • Patent number: 12123658
    Abstract: A heat exchanger for the thermal coupling of two fluids may include an inflow pipe defining a pipe longitudinal centre axis. A fluid inlet may be arranged on the inflow pipe. A plurality of flat tubes leading into the inflow pipe may be arranged on the inflow pipe adjacent to the fluid inlet. The first fluid stream may be flowable along a first fluid path extending from the fluid inlet through the inflow pipe and the plurality of flat tubes. The flat tubes may extend through a second fluid path for a second fluid stream of fluid and may be flowed about by the second fluid stream during operation. The heat exchanger may further include passage screen aperture interacting with the heat exchanger fluid and through which the first fluid stream is flowable. The passage screen aperture may be fluidically connected in series with the flat tubes.
    Type: Grant
    Filed: October 18, 2022
    Date of Patent: October 22, 2024
    Assignee: Mahle International GmbH
    Inventors: Dennis Aul, Uwe Foerster, Martin Sievers, Dawid Trawinski
  • Publication number: 20240239156
    Abstract: The invention relates to a heat exchanger, preferably a condenser, in particular for a motor vehicle, exhibiting: height, width, length, and tubes through which a first medium flows. A second medium flows around the tubes. The heat exchanger contains at least three rows across its width of tubes along its length. Each of the tubes are combined in the at least three rows to form at least one flow path for the first medium. The first row has at least one flow path through which the first medium flows vertically. The first flow path preferably comprises at least one third of the length of the heat exchanger, such that the temperature profile of the heat exchanger is improved. This is obtained in that the occurrence of disparities in the temperature profile is significantly reduced or even prevented.
    Type: Application
    Filed: January 11, 2024
    Publication date: July 18, 2024
    Inventors: Uwe FÖRSTER, Martin SIEVERS, Nikolaj BITTNER
  • Publication number: 20240230236
    Abstract: A heat exchanger including a heat exchanger block having first fluid channels and second fluid channels, including a fluid collector, the first fluid channels having a first fluid channel section and a second fluid channel section. A first fluid inlet is provided, which is fluidically connected to the first fluid channel section of the first fluid channels. A first fluid outlet is fluidically connected to the first fluid channel section of the first fluid channels. A second fluid inlet is fluidically connected to the second fluid channel section of the first fluid channels. A second fluid outlet is fluidically connected to the second fluid channel section of the first fluid channels. The fluid collector has a third fluid inlet, a third fluid outlet, and a fourth fluid inlet, which is fluidically connected to the second fluid channels. A fourth fluid outlet is fluidically connected to the second fluid channels.
    Type: Application
    Filed: October 18, 2023
    Publication date: July 11, 2024
    Applicant: MAHLE International GmbH
    Inventors: Martin SIEVERS, Uwe Foerster, Hicham ROUHANA
  • Publication number: 20240157755
    Abstract: A heat exchanger having a first heat transfer area, a second heat transfer area, a fluid collector and a valve unit as a single unit. The first heat transfer area has a first fluid path and a second fluid path. The first fluid path is in thermal contact with the second fluid path. The second heat transfer path has a third fluid path and a fourth fluid path. The third fluid path is in thermal contact with the fourth fluid path. The fluid collector has a first fluid inlet and a first fluid outlet for inflow into the fluid collector for storage in the fluid collector and for outflow from the fluid collector. The valve unit controls the fluid flow through the first heat transfer area, the second heat transfer area and/or the fluid collector in at least one first operating state for air conditioning cycle operation and/or in at least one second operating state for heat pump circuit operation.
    Type: Application
    Filed: November 15, 2023
    Publication date: May 16, 2024
    Applicant: MAHLE International GmbH
    Inventors: Uwe FOERSTER, Hannes STADLER, Hrushikesh SWAMI
  • Publication number: 20240157754
    Abstract: A heat exchanger with a heat transfer area, with a fluid collector and with a valve unit. The heat transfer area has a first fluid path for a first fluid flow and a second fluid path for the second fluid to flow through. The first fluid path is in thermal contact with the second fluid path for heat transfer between the first fluid and the second fluid. The fluid collector has a first fluid inlet and a first fluid outlet for the inflow of the first fluid into the fluid collector for the storage of the first fluid in the fluid collector and for the outflow of the first fluid from the fluid collector. The valve unit is provided and designed to control the fluid flow through the heat transfer area and/or the fluid collector. The heat transfer area, the fluid collector and the valve unit are designed as a single unit.
    Type: Application
    Filed: November 15, 2023
    Publication date: May 16, 2024
    Applicant: MAHLE International GmbH
    Inventors: Hannes STADLER, Uwe FOERSTER
  • Publication number: 20240133633
    Abstract: A heat exchanger including a heat exchanger block having first fluid channels and second fluid channels, including a fluid collector, the first fluid channels having a first fluid channel section and a second fluid channel section. A first fluid inlet is provided, which is fluidically connected to the first fluid channel section of the first fluid channels. A first fluid outlet is fluidically connected to the first fluid channel section of the first fluid channels. A second fluid inlet is fluidically connected to the second fluid channel section of the first fluid channels. A second fluid outlet is fluidically connected to the second fluid channel section of the first fluid channels. The fluid collector has a third fluid inlet, a third fluid outlet, and a fourth fluid inlet, which is fluidically connected to the second fluid channels. A fourth fluid outlet is fluidically connected to the second fluid channels.
    Type: Application
    Filed: October 17, 2023
    Publication date: April 25, 2024
    Applicant: MAHLE International GmbH
    Inventors: Martin SIEVERS, Uwe Foerster, Hicham ROUHANA
  • Publication number: 20240035751
    Abstract: A heat exchanger that can be flowed through in the x-direction based on the heat exchanger, having at least one first row and a second row of flat tubes, which can be flowed through by a cooling fluid, having a in the z-direction upper collecting tank, and a lower collecting tank, wherein the flat tubes in each row in the y-direction based on the heat exchanger are divided into at least three flat tube groups wherein all flat tubes of a flat tube group are flowed through in the same direction, wherein a cooling fluid inlet of the heat exchanger is communicatingly connected to a first flat tube group of the first row arranged in the y-direction in a middle region. By way of this, a homogenous temperature distribution can be achieved.
    Type: Application
    Filed: July 25, 2023
    Publication date: February 1, 2024
    Inventors: Nikolaj BITTNER, Uwe FÖRSTER, Martin SIEVERS
  • Publication number: 20240001730
    Abstract: The invention relates to a heat exchanger (1), in particular for a motor vehicle. The heat exchanger (1) includes a plurality of tubular bodies (2) stacked onto one another along a stack direction (S), which in each case delimit a first fluid path (3a) for being flowed through by a refrigerant (K). The individual tubular bodies (2) are arranged along the stack direction (S) spaced apart from one another, so that between intermediate spaces (4) formed between the tubular bodies (2) that are adjacent in the stack direction (S), each form a second fluid path (3b) fluidically separated from the first fluid paths (3a) for being flowed through by air. The individual tubular bodies (2) extend transversely, preferentially perpendicularly to the stack direction (S) along a longitudinal direction (L).
    Type: Application
    Filed: June 28, 2023
    Publication date: January 4, 2024
    Inventors: Uwe FÖRSTER, Sascha UNGER, Gerrit WÖLK
  • Publication number: 20230322050
    Abstract: A heat exchanger of an electrically driven motor vehicle, which includes a tube/rib block having a multiplicity of tubes and having a multiplicity of ribs. The tubes being arranged essentially in parallel to each other and spaced a distance apart, and the ribs each being arranged between two adjacent tubes. The ribs touching the two adjacent tubes, at least one manifold being arranged on one of the sides of the tube/rib block for the purpose of supplying fluid to tubes of the tube/rib block and for removing fluid from tubes of the tube/rib block. A cover device is arranged downstream and/or upstream from the tube/rib block for controlling the air flow through the tube/rib block temporarily or in certain regions for the defined removal of water from the tube/rib block. A method for operating a heat exchanger is also provided.
    Type: Application
    Filed: March 22, 2023
    Publication date: October 12, 2023
    Applicant: MAHLE International GmbH
    Inventors: Martin SIEVERS, Uwe FOERSTER
  • Publication number: 20230280111
    Abstract: A collecting tank for a heat exchanger may include at least one manifold for receiving a plurality of heat exchanger tubes of the heat exchanger. The at least one manifold may have a hollow space through which a fluid is flowable. The at least one manifold may include a bottom and a plurality of tank receptacles for receiving the plurality of heat exchanger tubes. The plurality of tank receptacles may be disposed in the bottom spaced apart from one another in a longitudinal direction and may extend in a transverse direction, which extends transverse to the longitudinal direction. In a height direction extending transverse to the longitudinal direction and transverse to the transverse direction, directed away from the hollow space, the bottom may have at least one curvature directed to an outside.
    Type: Application
    Filed: February 28, 2023
    Publication date: September 7, 2023
    Inventors: Gottfried Duerr, Uwe Foerster, Stephanie Hahnenkamm, Hagen Schirnig, Martin Sievers
  • Patent number: 11662160
    Abstract: A collector tube for a heat exchanger, which may have at least one flat tube, may include at least one recess, through which a separator may be inserted into the collector tube in an insertion position. The separator may have a separating wall comprising a separating wall thickness, wherein a clearance fit may be present between the separating wall and the recess in response to the insertion of the separator. The separating wall may provide at least one elevation to attain an increase of the separating wall thickness in a subarea of the separator. In the insertion position of the separator, the at least one elevation may be arranged in an area of the recess. In the insertion position, a press fit may be present between the at least one elevation and the recess.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: May 30, 2023
    Inventors: Axel Dolderer, Uwe Foerster, Martin Kaspar
  • Publication number: 20230124890
    Abstract: A heat exchanger for the thermal coupling of two fluids may include an inflow pipe defining a pipe longitudinal centre axis. A fluid inlet may be arranged on the inflow pipe. A plurality of flat tubes leading into the inflow pipe may be arranged on the inflow pipe adjacent to the fluid inlet. The first fluid stream may be flowable along a first fluid path extending from the fluid inlet through the inflow pipe and the plurality of flat tubes. The flat tubes may extend through a second fluid path for a second fluid stream of fluid and may be flowed about by the second fluid stream during operation. The heat exchanger may further include passage screen aperture interacting with the heat exchanger fluid and through which the first fluid stream is flowable. The passage screen aperture may be fluidically connected in series with the flat tubes.
    Type: Application
    Filed: October 18, 2022
    Publication date: April 20, 2023
    Inventors: Dennis Aul, Uwe Foerster, Martin Sievers, Dawid Trawinski
  • Publication number: 20230052183
    Abstract: A heat exchanger including a tube/rib block made up of tubes and ribs, the tubes forming fluid channels for conducting a first fluid, in particular a refrigerant, and the ribs arranged between the tubes forming a second fluid channel for conducting a second fluid, such as, in particular, air, which flows around the tubes, a collector being arranged at at least one end of the tube/rib block, which communicates with the fluid channels of the tubes, the at least one collector being provided with a plate-type design and including at least one base plate and a cover plate, which are stacked and soldered in a sealed manner, a spacer for spacing the base plate at a distance from the cover plate and for distributing the first fluid in the collector being provided.
    Type: Application
    Filed: August 9, 2022
    Publication date: February 16, 2023
    Applicant: MAHLE International GmbH
    Inventors: Benjamin NOTHDURFT, Uwe FOERSTER, Martin SIEVERS, Gottfried DUERR, Patrick WALZ, Nikolaj BITTNER
  • Publication number: 20220381523
    Abstract: A heat exchanger may include a collector and a connecting pipe. The collector may include at least one insertion opening. The connecting pipe may be inserted in the at least one insertion opening. The connecting pipe may include at least one bulge projecting radially to the outside. The at least one bulge may form a stop of the connecting pipe in an insertion direction in the at least one insertion opening. The at least one bulge may indicate a predefined angle-of-rotation position of the connecting pipe in the at least one insertion opening.
    Type: Application
    Filed: May 27, 2022
    Publication date: December 1, 2022
    Inventors: Gottfried Duerr, Uwe Foerster, Hagen Schirnig, Martin Sievers
  • Patent number: 11365937
    Abstract: A collector tube for a heat exchanger having at least one flat tube, may include a base and a cover arranged opposite the base. The base and the cover may define a longitudinal duct. The base may include at least one passage having an opening configured to accommodate the at least one flat tube of the heat exchanger. The opening may have at least one wide edge and at least one narrow edge. The longitudinal duct may have, in a cross section, a diameter that is smaller than the at least one wide edge of the opening. The at least one passage may include a collar extending away from the longitudinal duct.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: June 21, 2022
    Inventors: Uwe Foerster, Martin Kaspar, Hicham Rouhana, Markus Wawzyniak
  • Patent number: 11143464
    Abstract: A collector tube for a heat exchanger, which may have at least one flat tube, may include a base and a cover arranged opposite one another and embodying a longitudinal duct. The base may have at least one passage having an opening for accommodating the at least one flat tube of the heat exchanger. The at least one passage may have a collar, which may extend away from the longitudinal duct. The cover may have at least one notch, which may be located opposite the at least one passage and which may be embodied for accommodating a subarea of the at least one flat tube.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: October 12, 2021
    Inventors: Axel Dolderer, Uwe Foerster, Martin Kaspar